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5995477345 October 2006

DishwasherService Manual

Fully Integrated Direct FeedModel Dishwashers

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ATTENTION!!!This service manual is intended for use by persons having electrical and mechnicaltraining and a level of knowledge of these subjects generally considered acceptable in theappliance repair trade. Electrolux Home Products, Inc. cannot be responsible, nor assumeany liability, for injury or damage of any kind arising from the use of this manual.

SAFE SERVICING PRACTICES - ALL APPLIANCES

To avoid personal injury and/or property damage, it is important that SafeServicing Practices be observed. The following are some limited examples ofsafe practices:

1. DO NOT attempt a product repair if you have any doubts as to your ability tocomplete it in a safe and satisfactory manner.

2. Before servicing or moving an appliance:

• Remove the power cord from the electrical outlet, trip the circuit breaker tothe OFF position, or remove the fuse.

• Turn off the gas supply.• Turn off the water supply.

3. Never interfere with the proper operation of any safety device.

4. USE ONLY REPLACEMENT PARTS CATALOGED FOR THIS APPLIANCE.SUBSTITUTIONS MAY DEFEAT COMPLIANCE WITH SAFETYSTANDARDS SET FOR HOME APPLIANCES.

5. GROUNDING: The standard color coding for safety ground wires is GREEN,or GREEN with YELLOW STRIPES. Ground leads are not to be used as currentcarrying conductors. It is EXTREMELY important that the service technicianreestablish all safety grounds prior to completion of service. Failure to do sowill create a hazard.

6. Prior to returning the product to service, ensure that:

• All electrical connections are correct and secure• All electrical leads are properly dressed and secured away from sharp

edges, high-temperature components, and moving parts• All non-insulated electrical terminals, connectors, heaters, etc. are

adequately spaced away from all metal parts and panels• All safety grounds (both internal and external) are correctly and securely

connected• All panels are properly and securely reassembled

© 2006 Electrolux Home Products, Inc.

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TABLE OF CONTENTSSafe Servicing Practices ------------------------------------------------------------------------------------------- 2The Design and Operation of the Fully Integrated Dishwasher --------------------------------------- 5

PLD4555RFC ----------------------------------------------------------------------------------------------------- 5PLD4375RFC ----------------------------------------------------------------------------------------------------- 5LEDB500FEE ----------------------------------------------------------------------------------------------------- 5

Cycle Selections ------------------------------------------------------------------------------------------------------ 6Ulimate Scrub---------------------------------------------------------------------------------------------------- 6Maxx Clean ------------------------------------------------------------------------------------------------------- 6Speed Clean ------------------------------------------------------------------------------------------------------ 6Normal Wash ----------------------------------------------------------------------------------------------------- 6China/Crystal ---------------------------------------------------------------------------------------------------- 6Eco Wash --------------------------------------------------------------------------------------------------------- 6Top Rack, Glasses and Party Glasses ------------------------------------------------------------------- 6Rinse Only -------------------------------------------------------------------------------------------------------- 6Favorite Cycle --------------------------------------------------------------------------------------------------- 6

Option Selections ---------------------------------------------------------------------------------------------------- 7Wash Pressure -------------------------------------------------------------------------------------------------- 7Wash Temperature --------------------------------------------------------------------------------------------- 7Sanitize Rinse --------------------------------------------------------------------------------------------------- 7Dry ------------------------------------------------------------------------------------------------------------------- 7Delay Start -------------------------------------------------------------------------------------------------------- 7Control Lock ----------------------------------------------------------------------------------------------------- 8Digital Display --------------------------------------------------------------------------------------------------- 8

Status Indicators ----------------------------------------------------------------------------------------------------- 8WASHING --------------------------------------------------------------------------------------------------------- 8DRYING ------------------------------------------------------------------------------------------------------------ 8CLEAN ------------------------------------------------------------------------------------------------------------- 8SANITIZE ---------------------------------------------------------------------------------------------------------- 8Rinse Agent LOW----------------------------------------------------------------------------------------------- 8

Wash System ----------------------------------------------------------------------------------------------------------- 8The Alternating Wash System -------------------------------------------------------------------------------------- 9Part in the Wash System--------------------------------------------------------------------------------------------- 10

Wash Pump ------------------------------------------------------------------------------------------------------- 10Stainless Steel Filter --------------------------------------------------------------------------------------------- 10Lower Spray Arm ------------------------------------------------------------------------------------------------- 11Center Spray Arm ------------------------------------------------------------------------------------------------ 11Upper Spray Arm ------------------------------------------------------------------------------------------------- 11Drain Pump -------------------------------------------------------------------------------------------------------- 11

Drying System ---------------------------------------------------------------------------------------------------------- 12Fan/Vent Assembly ---------------------------------------------------------------------------------------------- 12Heater --------------------------------------------------------------------------------------------------------------- 13Door Baffles ------------------------------------------------------------------------------------------------------- 13

Dispensing System ---------------------------------------------------------------------------------------------------- 13Dispenser Operation -------------------------------------------------------------------------------------------- 13

Door Latch Assembly ------------------------------------------------------------------------------------------------- 14Fill System --------------------------------------------------------------------------------------------------------------- 14Door Hinge and Spring ----------------------------------------------------------------------------------------------- 14

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The Control System --------------------------------------------------------------------------------------------------- 15Soil Sensing ------------------------------------------------------------------------------------------------------- 15Temperature Controls ------------------------------------------------------------------------------------------- 15Service Tests ------------------------------------------------------------------------------------------------------ 16

Water Temperature Test ----------------------------------------------------------------------------------- 16To Activate the Water Temperature Test --------------------------------------------------------- 16

Water/Service Test------------------------------------------------------------------------------------------ 16To Start the Test ---------------------------------------------------------------------------------------- 16To Exit the Water/Service Test --------------------------------------------------------------------- 16Chart for the Water/Service Test ------------------------------------------------------------------- 17

Relay/Triac and Sensor Test ----------------------------------------------------------------------------- 17-18Control Codes----------------------------------------------------------------------------------------------------- 19

Disassembly and Service -------------------------------------------------------------------------------------------- 20Safety Precautions ----------------------------------------------------------------------------------------------- 20Control Panel ------------------------------------------------------------------------------------------------------ 20

Electronic Control ------------------------------------------------------------------------------------------- 20Display --------------------------------------------------------------------------------------------------------- 20

Door Latch --------------------------------------------------------------------------------------------------------- 21Door Strike --------------------------------------------------------------------------------------------------------- 21Detergent/Rinse Aid Dispenser ------------------------------------------------------------------------------- 21Door Hinge--------------------------------------------------------------------------------------------------------- 21Door Seal ---------------------------------------------------------------------------------------------------------- 22

Bottom Door Seal ------------------------------------------------------------------------------------------- 22Upper Rack -------------------------------------------------------------------------------------------------------- 22Tub Roller Assembly -------------------------------------------------------------------------------------------- 22Center Spray Arm ------------------------------------------------------------------------------------------------ 22Upper Spray Arm ------------------------------------------------------------------------------------------------- 22Lower Spray Arm, Spray Arm Support and Filter --------------------------------------------------------- 23Heating Element -------------------------------------------------------------------------------------------------- 23Float Switch and Mount Bracket ------------------------------------------------------------------------------ 23Water Valve-------------------------------------------------------------------------------------------------------- 23Drain Pump -------------------------------------------------------------------------------------------------------- 24

Replacing the Drain Pump -------------------------------------------------------------------------------- 24Pump and Motor Assembly ------------------------------------------------------------------------------------ 24

Remove motor from sump -------------------------------------------------------------------------------- 24Delivery Tube ----------------------------------------------------------------------------------------------------- 25Vent and Fan Assembly ---------------------------------------------------------------------------------------- 25

Exploded Views -------------------------------------------------------------------------------------------------------- 26-34Control Panel ------------------------------------------------------------------------------------------------------ 26Door - model LEDB500FEE0 --------------------------------------------------------------------------------- 27Door - models PLD4375RFC0 & PLD4555RFC0 -------------------------------------------------------- 28Tub ------------------------------------------------------------------------------------------------------------- 29Motor & Pump ---------------------------------------------------------------------------------------------------- 30Frame ------------------------------------------------------------------------------------------------------------- 31Racks - model LEDB500FEE0-------------------------------------------------------------------------------- 32Racks - model PLD4375RFC0 ------------------------------------------------------------------------------- 33Racks - model PLD4555RFC0 ------------------------------------------------------------------------------- 34

Service Data Sheet ---------------------------------------------------------------------------------------------------- 35-36

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Fully Integraded Direct Feed Model Dishwashers

PLD4555RFC

Added to the fully integrated control, the new designoffers, a new control console which is decreased inheight. The vent and door latch release handle thathad added to the height have been redesigned. Thetowel bar handle once decoration now becomes thedoor opening handle.

PLD4555RFC This is a 5 speed Professionalmodel with 6 wash cycles and a Rinse only cycle.This model has preprogrammed wash pressure,water temperatures, and dry options for each of the 6different wash cycles. The user has the option tochange these setting to accommodate their desires.See Figure 1

PLD4375RFC This is a 3 speed Professionalmodel with 6 wash cycles and a Rinse only cycle.This model has preprogrammed wash pressure,water temperatures, and dry options for each of the6 different wash cycles.

LEDB500FEE This is a 5 speed Elements modelwith 5 wash cycles, a Favorite cycle, and a Rinseonly cycle. This model has preprogrammed settingsfor motor speed , water temperature and dry for eachof the wash cycles with the option to change these ifthe user wishes. The Favorite Cycle selection allowsthe user to program a wash cycle with any options totheir liking, then hold this cycle in memory by press-ing one pad the designed cycle is repeated.

The fully integrated control places all cycle selectionand options on top of the console out of sight withthe door closed. With the controls under the countertop while in operation, the cycle selection needs tobe accomplished with the door opened. First selecta wash cycle and any options, then press the Start/Cancel pad or a Delayed Start pad and close thedoor the cycle begins. A display mounted in the frontof the console shows the time remaining of the delayor the time remaining in the cycle. While in operation,the dishwasher control monitors the progress of thecycle to determined if changes need to be made toimprove the cycle performance. Changes to thecycle can start as early as the first fill, if food soils inthe water deems it necessary. If the user wishes tomake a change to the cycle, it needs to be donebefore the completion of the first fill. After that timeany changes to a wash cycle will require a Cancel/Drain before a new wash cycle can be selected.While in operation, the control monitors all aspects ofthe cycle with the use of sensors mounted in thesump. These sensors enable the control to adjustthe length of the cycle based on soil level and watertemperature and are made as needed.

The Design and Operation of theFully Intergraded Dishwasher.

As stated earlier, a wash cycle can not be changedafter the first fill without a Cancel/Drain, options tothe wash cycle can be changed at any time up tothe point they are to be applied. If at any time afterthe cycle has been started, the door is opened theunit will stop, by closing the door the operations willresume without pressing the Start/Cancel pad. If acycle needs to be terminated after the first fill hasstarted touching the Start/Cancel pad once sendsthe unit into a Cancel/Drain for 90 seconds, thisterminates this selection. If while in a Cancel/Drainthe Start/Cancel pad is pressed a second time thedrain action stops immediately. At the completion ofa wash cycle the control lights the Clean indicator;this indicator remains on until the door is opened.After the wash cycle is completed and the dooropened when the Start/Cancel pad is pressed for anew load the control will repeat the previous runcycle, including all of the previously selectedoptions.

Figure 1

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PLD4555RFC

PLD4375RFC

LEDB500FEE

Cycle Selections

To better understand these different wash cycles thefollowing are each cycle, the settings and whatoptions are available.

Ultimate Scrub

This cycle is used for heavily soiled dishes. Thecontrol automatically selects the High speed for thewash motor, an assured water temperature of 140°inthe main wash and 155° in the final rinse, and dry isa default to Sahara. All of the options are availableand soil sensing will be used.

Maxx Clean

This cycle is used for heavily soiled dishes. Thecontrol automatically selects the Maxx wash speedfor the wash motor, an assured water temperature of140°in the main wash, 155° in the final rinse, and dryis default to Maxx. All of the options are availableand soil sensing will be used.

Speed Clean

This cycle is used for a small dish load or lightlysoiled. The control automatically selects a High /Maxx wash speed on the wash motor, an assuredwater temperature of 125° in the main wash and128° in the finial rinse. Only the Dry Option andDelay Start options are available. Soil sensing isused.

Normal WashThis cycle is for normally soiled dishes. The controlautomatically selects the Normal speed for the washmotor, an assured water temperature of 135°in themain wash and 140° in the final rinse. All of theoptions are available and soil sensing will be used.

China/Crystal

This cycle is for delicate crystal or china. The controlautomatically selects the Delicate speed for the washmotor, an assured water temperature of 130°in boththe main wash and the final rinse. Only the Air Dryand the Delay Start options are available. Soilsensing will not be used.

Eco Wash

This cycle is for lightly soiled dishes The controlautomatically selects the Normal speed for the washmotor, an assured water temperature of 135°in themain wash and 140° in the final rinse. All WashPressures, Dry Options, and Delay Start options areavailable. The Wash Temperature option is notavailable and soil sensing will not be used.

Top Rack, Glasses, or Party Glasses

This cycle is used for small loads of glassware orcups. The control automatically selects the Normalspeed for the wash motor only an assured watertemperature of 135° is set for the final rinse. Thewater temperature options, dry options, and DelayStart are available. Soil sensing will not be used.

Rinse Only

This cycle is intended to rinse dishes that will bewashed at a later time. There are no optionsavailably with the exception of a Delay Start.

Favorite Cycle

This is a cycle programmed by the user and givesthem a short cut to a cycle they use frequently. Toprogram the Favorite Cycle make the selection of awash cycle and all of the desired options, press andhold the Favorite Cycle pad for three seconds.Once the Favorite Cycle has been set the followingindicators will flash Time remaining, Favorite Cycle,the user’s selected cycle and all options selected.These lights will flash for 2 seconds. The Favoritecycle can now be set as a wash cycle with the Start/Cancel pad.

Figure 2

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Option Selections

PLD4555RFC

PLD4375RFC

LEDB500FEE

Option selections allow the user flexibility to alter awash cycle to their desires. These options are thespeed of the wash motor this will increase waterpressure sprayed on the load, the temperature ofwater in both the main wash and finial rinse seg-ment of a cycle, the dry can be a no heat dry or onsome models the heated dry can actually beextended for a longer time. This section coverthese and a delay start option.

Wash Pressure

Depending on model, the option could read either“High” or “Maxx” speed. This selection willsubstitute the speed of the motor to 3400 rpm whenspraying from the lower spray arm and 3200 rpmfrom the upper and center arms. This overrides thevariable speed function of the selected cycle.

Delicate Pressure limits all wash and rinse speedsto 2800 rpm only for the selected cycle.

Wash Temperature

This option allows for the selection of a high tem-perature wash in select cycles. The high tempera-ture wash occurs at the end of the main washsegment of the cycle.

Sanitize Rinse

The Sanitize rinse increases the finial rinse segmentto a temperature of 155° on select wash cycles. Onmodels PLD4555RFC and LRDB500FEE when thesanitize rinse option is selected this selects the HighTemp wash as well, for that reason, both the Sanitizeand Hi temp wash indicators will light. On othermodels, this is a separate option. There can be up to30 minutes delay for the Sanitize rinse when se-lected. On models with a display, an HO will flashduring this delay period. Once the wash cycle iscompleted, the Sanitize light and the Clean light arelight and remain on until the door is opened. If the155° was not reached in the allotted time, theSanitize light will not come on informing the user thecriteria for this setting was not met.

This option allows the user to raise or lower thespeed of the wash motor which increases or de-creases the pressure of the water used to clean thedishes. The control will not allow this change in allcycles because of the intent of the cycle. Thischange in water pressure will effect all of the washesand rinses in this selected cycle.

DryThis option, on all models, can disable the heatingelement which gives only an air dry. There is anactive vent and fan assembly located in the top rightback corner of the tub that will be activated at theend of all wash cycles. On select models, the Dryoption also offers a Max or a Sahara dry, this settinglengths the dry cycle by 20 minutes to insure a dryload. If when the dishwasher is in the dry cycle thedoor is opened and stays open for more then oneminute the remainder of the dry cycle will cancel out.

Delay Start

This option allows for a wash cycle to be pro-grammed into the control and the start delayed for aset number of hours. A cycle can be delayed from 1to 24 hours in 1 hour increments. To set a DelayStart a wash cycle with options is selected followedby pressing the Delay Start pad. Each time the DelayStart pad is pressed in 3 second intervals the numberof hours to delay will increase by one hour up to 24hours. Once the delay begins, time is decreased inone hour segments until one hour remains, then thecount down changes to minutes. After the countdown starts pressing the Start/Cancel pad will haveno effect on the delay start, if the Start/Cancel pad isa second time in succession this will cancel the delayand start the selected cycle.

The display will flash an HO on models so equipped.This option will increase the water temperature to140°. There is a time override for this option of notmore then 10 minute.

Figure 3

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Digital DisplayThe digital display is to indicate the current status ofthe cycle. The display is a two digit display so timewill read from 1 to 99 minutes. If a cycle length isover 99 minutes, the display will have a plus sign (+)to the right of the numbers. This plus sign (+) willstay light until the cycle time drops below 99 min-utes. The display may also have codes appear toindicate the status of the cycle or the condition of thedishwasher. The most common of these codes is anHO code which may appear and flash in the display,this indicates that the control has delayed the cycleto increase the water temperature. Another of thesecodes is a flashing CL indicates of an open door.This code can appear if the control is programmedand the Start/Cancel pad is pressed before the dooris closed. Close the door and the cycle will start.The last of the common codes is a PF code. Thiswill flash in the display on initial power up of thedishwasher or any time power to the dishwasher hasbeen interrupted. There are fault codes that canappear in the display as well; these will be listed asfailure codes in the control test section of thismanual.

Status Indicators

The WASHING indicator is energized at the begin-ning of any wash cycle and will remain on as long asthe vent actuator is not energized.

The DRYING indicator is energized when the ventactuator is energized and remains on until the end ofthe cycle regardless of which drying option is se-lected.

The CLEAN indicator is energized at the end of allwash cycles with the exception of a Rinse and holdcycle. The clean indicator will remain on until thedoor is opened. After the door is open, ALL indicatorswill be extinguished with the exception of the “Rinseaid low” if applicable.

The SANITIZE indicator is shown in the front displayas an “S” and will be energized at the end of anycycle that the Santi option has been selected. Thesanitize criteria must be completed correctly for thisindicator to come on. This indicator will be extin-guished when the door is opened.

The Rinse Agent LOW indicator on the keypad willbe on any time the rinse aid level in the dispenser islow. This light will stay on until the dispenser is filled.The indicator can also be extinguished after 5successive cycles have been run with out filling thedispenser. On select models an Lo will appear in thefront display to indicate the rinse aid dispenser is lowon agent.

Wash SystemThe wash system consists of wash pump and motorassembly to provide water under pressure for thethree spray arms used to clean the dishes. Thesethree spray arms will alternate operation starting withthe lower spray arm. After a predetermined time thespray will change to the center and upper spray armssimultaneously.

Control LockThe control lock disables the keypad so that thesettings entered into the control can not be changed.To activate the control lock press and hold the DelayStart pad for 3 seconds with the dishwasher doorclosed. The Control Lock indicator will illuminatewhen the lock is set. To remove the control lockpress and hold the Delay Start pad for 3 secondsuntil the light goes out. If the control lock is used, itshould be turned off after the cycle is completed andbefore the door is opened.

If the control lock was used and not turned off beforethe dishwasher door is opened the light will go outwith the control still locked, resulting in a non func-tioning dishwasher. This can be corrected byremoving power from the unit this will reset thecontrol.

Below the lower spray arm is the filter and soildirector this covers the complete sump. The filter isintended to block loosened food particles fromentering the wash sump area as they fall to thebottom from the spray action. See Figure 4

Figure 4

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This wash system is designed to spray from only onearm or one set of arms at a time. The advantage ofthis is that it reduces the amount of water needed inthe tub. The way this system operates is explainedas follows.

The check ball rests at the end of a ramp moldedinto the sump partially blocking the rear hole. Aswater under pressure enters the volute cover, thecheck ball is held tightly into the rear hole restrictingwater flow from this opening. Water can only leavethe remaining hole from the top of the volute coverinto the lower spray arm. See Figure 7

Alternating the spray is achieved with a check ballmoving between two holes in the sump. One hole islocated in the rear of the sump used to supply waterto the upper two spray arms; the second is locatedout the top of the volute cover onto which is mountedthe lower spray arm.

On the underside of the filter is a soil director whichdirects the loosened food particles to the lower leftside of the sump to a stainless steel food maceratorused to pulverize the soil so it can pass through thedrain hose. See Figure 5

The remaining parts in the wash system are thesump assembly that acts as a reservoir for cleanwater being supplied to the wash pump and thedelivery tube to supply water to the upper two sprayarms.

The Alternating Wash System

The force of the water entering and leaving the armcauses it to turn by the positioning of the hole in thespray arm. The rear hole which is molded in thesump has a small section removed above where thecheck ball sets, this section allows a small amount ofwater to by-pass the check ball and enter the deliverytube mounted up the out side rear of the tub. Waterby-passing the check ball will fill the delivery tube at arate of approximately four inches a second. Thiswater will be used to change the spray from bottomto the upper two spray arms. All wash and rinsecycles will start by spraying from the lower wash arm.Changing spray from bottom to upper spray arms isaccomplished with the control stopping the washpump for not more then .6 of a second. This pauseremoves water pressure from the rear of the checkball, water that had accumulated in the delivery tubenow reenter the sump, which moves the check ballaway from the hole and up the ramp.

Figure 5

Figure 6

Figure 7

Figure 8

Ball covering back hole

Bypass opening

Volute coverOpening tolower sprayarm

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The pump restarts thewater pressure in backof the ball forces thecheck ball up into the tophole in the volute coverblocking water tothelower spray arm. Waterexits the rear hole intothe delivery tube supply-ing water to the upperspray arms.Water in the delivery tube is divided with 80% goingto the center spray arm and 20% to the upper arm.Water spray will continue from the upper spray arms,after a predetermined time the control will againpause the pump this time the pause will be for 3seconds. This longer time allows for the deliverytube to completely drain then the check ball returnsto the bottom of the ramp. The pump restarts withspray from the lower spray arm completing a sprayarm change cycle.

Wash Pump

The speed of the motor is determined by the elec-tronic control based on the cycle selected. Thecontrol continually monitors motor speed with inputfrom a Hall Effect sensor mounted to the rear of thewash motor. Input voltage for operating the motorwill be 120VAC with the motor changing this to VDCwith a built-in rectifier.

Parts in the wash System

These model dishwashers use a variable speed DCmotor. The variable speed motor is used to im-prove cleaning by varying the water pressuredepending on the cycle selected. An UltimateScrub and Maxx cycle intended for heavily soileddishes will have a high pressure speed to betterremove baked on food where a China/Crystal cycle,for very delicate items will have a very low waterpressure setting. The user has an option to changethe motor speed on some models. There is anadded advantage of quieter operation when thelower speed is used. The motor and wash pumpare supplied as a one piece assembly.

Stainless Steel Filter

The stainless steel filter covers the entire sump area.The filter is intended to remove all food particles fromthe water so only clean water reenters the sump.There is a fine mesh polyester screen housing in thecenter of the stainless steel filter to house a lift outbasket to catch larger items, this basket can beremoved for cleaning. On the bottom of the innerscreen housing there is a soil director used to directfood soil removed from the dishes to the left side ofthe sump to be removed first when the water isdrained from the tub. The lower spray arm supportis also used as a lock for the filter to insure it is downtight to the sump. See figure 11

Ball at the top of rampopening hole to center arm

Figure 9

Figure 10

Figure 11

11

With the drain pump mounted in this location it isaccessible by removing both the outer door and thetoe kick panels. The drain pump connector hosefrom the pump to the sump are supplied as anassembly. See Figure 15

This arm is located in the top of the tub and turns ina counter clockwise direction, and sprays simulta-neously with the center spray arm. The mount forthe upper spray arm serves as the lock nut for thedelivery tube and is only available as an assembly.The spray arm will turn at approximately 40 rpm.See Figure 14

Lower Spray Arm

This spray arm is designed using three spray arms tospray water up into the lower rack. There are alsoon the underside of this spray arms 4 legs used forcleaning the soil from the stainless steel filter. Threeof the legs have spray openings pointed toward thecenter these will spray water across the top of thefilter forcing the loosen soil to the center. The forthleg is mounted closer to the center of the spray arm,with a spray opening pointed straight down forcesfood collected in the center basket down into the soildirector for removal in the drain segment of the washcycles. Turning of the arm is accomplished by waterunder pressured sprayed from holes molded on topof the arm these force the arm to turn in a clockwisedirection. The lower spray arm turns periodically inall cycles, this to keep the filter clean, and reducechances of redeposit. See Figure 12

This spray arm is mounted on a short delivery tubeto the under side of the upper rack. This arm rotatesclockwise at approximately 20 rpm. The centerspray arm and delivery tube will move in and out withthe upper rack. There is a bellows mounted to theback end of this short delivery tube which forms aseal against the back wall of the tub when the sprayarm is in operation. This delivery tube is also de-signed for the adjustable upper rack. See Figure 13

Center Spray arm

Drain Pump

The only function of the drain pump is to removewater from the dishwasher. The drain pump ismounted directly to the front of the sump. Themotor for this pump is rated a 1/25th hp drive motor.The drain pump only comes as an assembly. Thefront cover of the pump can be removed for cleaningif needed.

Upper Spray arm

Figure 12

Figure 13

Figure14

Figure15

12

Air Flow

Dry (exhaust fan on)

Drying System

The Drying system consists of a Fan/Vent assembly,Heater, and Air Baffles. The way the systems per-forms is; as the dry portion of a wash cycle isreached the control activates the heater, if selected,and opens the vent door, located in the top right rearof tub, this allows the vent fan to draw in outside airresulting in hot air being forced out the bottom of theouter door panel. See Figure 16

Fan/Vent assembly

Fan/Vent assembly located top right rear of tub. Thevent door, normally closed, is opened by a 12 VDCsolenoid also mounted in the assembly. There is anoptical sensor to indicate to the dishwasher controlthat the vent door is properly closed until it is to beopened. See Figure 17 & 20

If for any reason this door is not closed, the control willattempt to close the door 5 times if it continues to fail afailure code will appear in the display. The dishwasherwill not operate until this condition is corrected.

The vent fan starts as soon as the vent door isopened and turns at 3500rpm. The motor is pow-ered by 12 VDC with a frequency generator toindicate to the control fan speed. If for any reasonthe Fan/Vent assembly would get disconnected, afailure code will appear in the display on the front ofthe door and the dishwasher will completely shutdown. The dishwasher will not function without thisassembly.

Vent Doorin theopenpossition

Figure 16

Figure 17

Figure 19

Figure 20

optical sensor

12 VDC solenoid

vent fan vent door

Figure 18

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The detergent and rinse aid dispenser consists oftwo dispensers combined in one housing and arecontrolled with one wax motor actuator. The firsttime the control energizes the actuator the coverover the detergent side of the dispenser opensdispensing detergent for the main wash cycle. Thesecond time the actuator is energized rinse aid isreleased for the final rinse cycle. The detergent sideof the dispenser consists of two cups: the smallercup is for detergent used in the pre-wash cycle, thesecond larger cup is for the main wash section of thecycle. The rinse aid section contains a reservoir thatwill hold enough rinse aid for many applications. Seefigure 24 This reservoir has an indicator that will beclean if rinse aid needs to be added. A reed switchhas been added to the rinse aid dispenser thatinforms the control when the rinse agent is low thecontrol then displays and LO in the display to informconsumer of this condition. There is also an adjust-able hub inside the dispenser, seen by removing thecap, to control the amount of agent dispensed. Thisdetergent and rinse aid dispenser is replaced as acomplete assembly. The cap for the rinse aid dis-penser is the only part available for this dispenser.

The dispenser has two detergent cups both coveredby the same cover. In the bottom center of thespring loaded cover is a thumb release. By pushingup on this release, the cover will open. The larger ofthe two cups, under the cover, is used for the mainwash cycle the smaller for the pre-wash. With thedetergent added the cover is closed. The cover isslotted so the detergent from the smaller pre-washcup can be washed out without the cover opening.

Dispensing System

Dispenser Operation

HeaterThe heater mounted in the bottom of the tub in-creases water temperature, then in the dry cycleassist in drying the dishes. See Figure 21 Theamperage draw of the heater can vary depending onthe job it is to perform. When heating water, theamperage draw can be 900 watts. This amperagewill drop to approximately 700 watts in the dry cycle.The design of the heater is to be more energyefficient. Mounted next to the heater on the underside of the tub is a safety thermostat. This thermo-stat will open if the temperature in the tub raises over200°F. See Figure 22

Baffles have been installed into the bottom of theinner door panel to direct hot air out of the dish-washer. Foam baffle is mounted to the outsidebottom of the inner door panel to keep steam and airfrom rising into the door. This foam baffle most notbe removed. See Figure 23

Door baffles

Door baffle

Do Not Remove

Figure 21

Figure 22

Figure 23

Figure 24

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After the fill in the main wash, the control appliespower to the wax motor actuator. The plunger of thewax motor extends pressing down on a pivot armattached to the latch for the cover, this releases thecover to dispense the detergent. On the oppositeend of this pivot arm is a pin that rides up in theactuating arm for the rinse aid dispenser. Oncepower has been removed from the wax motor, theplunger retracts the pin riding in the rinse aid actuatorfollows a track down the back side of the actuator.The dispenser is now ready to dispense the rinseaid. The control again applies power to the waxmotor the pivot arm raises the rinse aid actuator torelease rinse aid into the dishwasher. When poweris removed from the wax motor the pivot arm fallsand a leaf spring mounted to the side on the dis-penser forces the actuator arm to the startingposition for the next cycle.

Door latch assemblyThe door latch assembly performs two functions: firstto close and latch the door to the tub, second is toactuate both of the door safety switches to insure thedoor is closed before the dishwasher can be oper-ated. The latch mechanism is mounted to the insidedoor panel with a lock tab at the bottom of the latchbody and two location pins on the back then securedwith two screws. As the door is closed the strikemounted to the top of the tub presses in on thelocking cam and rotates it forward this raises a lockinto the center opening of the strike. As the cam inthe latch is pressed forward it releases the doorswitch actuator closing both switches. See Figure 25The handle mounted to the outer door panel is usedto open and close the door

Fill systemThe fill system of this dishwasher consists of thewater fill valve and a float safety switch. Power fromthe control is applied to the water fill valve throughthe float safety. The water valve is an electricallyoperated shut off valve with a flow washer thatregulates the amount of water based on the waterpressure applied to the valve inlet. Water pressureneeds to be between 20 and 120 psi for the dish-washer to have the proper amount of water foroperation. See Figure 26

The float safety switch will shut off power to the valveif the tub over fills with water. Water enters the tubthrough an air gap mounted to the left side of the tub.See Figure 27

Door Hinge and SpringThe inner door panel is attached to the tub frame byhinges. On the face of both hinges there are fiberpads that act as breaks to hold the door at any angle,these pads do not interfere with the smooth up anddown movement of the door. There are door springsand cables on both hinges to assist in opening andclosing the door. The door spring, which is attachedto the rear frame, has a cable that passes around afriction bearing before attaching to the door hinge.This spring and cable assembly provides a quieter,smoother, operating door. See Figure 28

Figure 25

Figure 26

Figure 27

Figure 28

Locking Cam

Bearing

Spring

Cable

15

The Control SystemThe electronic control, with input from varioussensors, has total operation of the dishwasher oncea wash cycle has been started. The electroniccontrol is mounted inside the console with its powercoming directly from the power junction box. Powerto operate the control can not be interrupted byopening or closing the door. However, the controldoes know when the door is opened. The blackpower lead from the door switch is attached to thecontrol this line operates all of the components in thedishwasher. Input to the control comes from thefollowing: the keypad is a membrane switch thatallows the user to select a specific wash cycle andany available option for the dishwasher to perform, asoil sensor that determines the concentration of soilin the water, a thermistor to measure the tempera-ture of the water, a Hall sensor to track the speed ofthe motor, an optical sensor reports the position ofthe vent door, finally a reed switch in the rinse aiddispenser to report the pressents of rinse aid in thedispenser. This section will describe the sensorshow they operate followed by tests that can beperformed to test the control system and all of thecomponents in the dishwasher.

Soil Sensing

A soil sensor is used by the control to make adjust-ments to length of wash cycles based on the soillevel found in the water. This sensor is located in thebase of the sump directly in front of the wash motorintake. The soil sensor receives a voltage signal fromthe control which it converts into a small beam oflight; the transmitter then directs this light beam to areceiver through water that has been used to pre-wash the load in the unit. As the light passes throughthe water the density of the water can reduce thestrength of the light beam reaching the receiver. Thereceiver turns the light back to a voltage this is thenreturned to the control, which interprets this readingand adjusts the cycle length accordingly. See Figure29

The number of times the control checks the soil levelvaries with cycle but in cycles it is used the pre-washwater will always be checked. The control canincrease a cycle length or decrease as needed butnever longer then the longest cycle or shorter thenthe shortest cycle available.

The control pauses the wash motor for 30 secondsto allow time for the water to settle before checkingthen the water is drained and any adjusts to the cycleare made.

Temperature controls

The control is programmed with preset wash andrinse temperatures for each cycle. The use of athermistor in the sump provides water temperatureinformation to the control to maintain these tempera-tures. The control provides options for the user toselect a higher temperature wash as well as asanitize rinse.

The thermistor is located in the same housing as theSoil Sensor. The post on the Soil Sensor that is talleris the location of the Thermistor. With the sensor inthe water of the sump it gets a more accurate readingof water temperature. See Figure 29

.

To insure the pre-programmed water temperature forthe wash cycle is reached the control can pause themain wash cycle up to 10 minutes in a Temp assurecycle. This Temp assure cycle is automatic and notselected as an option. If the Hi-temp wash option isselected, the control will delay the main wash sectiononce again for up to10 minutes to increase the watertemperature to a higher degree. Whether or not thewater temperature is reached in this10 minutes delay,the cycle will continue without indication that itreached or did not reach this temperature.

When the Sanitize option is chosen, the NationalSanitation Foundation requires in the final rinse cyclethat 155°F be reached and maintained for a certainamount of time. During the final rinse, the controlpauses the time remaining for up to 30 minutes toreach this 155°F temperature before proceeding tothe end of the cycle. Should the cycle meet therequirements defined for the sanitize option, theSanitize light will come on and stay on until the dooris opened. If the requirements are not met thesanitize light will not come on at the end of the cycle.

Figure 29

Soil sensorThermistor

16

Service Tests

The control has a number of tests that have beenprogrammed into its memory most of these are formanufacturing purposes and are not useful for fieldservice. At times, if certain pad combinations arepressed, different codes may appear in the displaythat are unknown or not listed, what needs to bedone is disconnect power to the unit then reconnect.You can then continue with servicing the dishwasher.

The control has service tests programmed into it thatcan be of assistance to the service technician indiagnosing control and component problems with thisunit. These tests are; The Water /Service Test,Water Temperature Test Mode, and The Relay/Triacand Sensor Test.

Water/Service Test

In the Water/Service Test, the control will stepthrough each function of the product and operateeach component before ending and illuminating theCLEAN and SANITIZE LED’s. Along with checkingthe operating components the control will check all ofthe input sensors as the test progresses, if at anytime a failure in one of these sensors is detected, thetest will stop and a failure code will be displayed.

To Start the Test

From an idle condition, this is with no programsentered into the control, press pad # 10 and theSTART/CANCEL simultaneously for three seconds.You will know that the test has started by the watervalve being activated and the Washing and SensingLED lighting. The test will automatically advancethrough the complete test unless the control detectsa failure in one of the sensors. The test may bemanually advanced by pressing the START/CANCELpad. Each time the pad is pressed the cycle isadvanced one segment.

To Exit the Water serviceTest

At the end of the test the control lights the CLEANand SANITIZE LED’s. With these indicators light,opening then closing the door will give a PF code inthe display, the START/CANCEL pad can now bepressed to clear the test and restart the dishwasher.

To insure the correct pad is pressed to enter and usethese tests the pad locations will be numbered 1through 11 with pad # 1 being the pad furthest to theleft an pad # 11 the furthest to the right. In all casesthe pad to the right will always be the Start/Cancelpad.

Water Temperature Test

This test will allow the service technician to check thetemperature of the water in the sump of the dish-washer while at idle or while it is in operation. Thetemperature of the water will show in the displayusing the last two numbers in the degrees. Ontemperature over two numbers the display will readthe last two numbers in the temperature and a plus(+) sign, an example of this is the water in the sumpis 120° will read 20+ in the display.

To active the Water temperature test

With the dishwasher in idle press and hold theNormal wash and the Start/Cancel pads simulta-neously for 3 seconds the temperature will be shownin the display. To terminate this test press and holdthe Normal wash and the Start/Cancel pads again for3 seconds.

With the dishwasher in operation, press the cycleselection pad of the cycle that is in operation andhold in for 3 seconds the temperature will be dis-played. The temperature will stay in the display andupdate every 3 seconds. To terminate this test pressand hold the same cycle selection pad used to startthe test.

17

Chart For the Water Service Test

Relay/ Triac and Sensor Test

This test allows the servicer to troubleshoot thedishwasher by energizing the different devices of thedishwasher independently from one another. Thebest way to understand the value of this test for fieldservice technicians is the example of testing theheater for operation. Enter the test followed bypressing pad number 10 on the keypad (see table)this will apply power to the heater. The heater will bepowered until the same pad is pressed a secondtime.

To access this test the unit must be placed in PFcondition. While in PF press and hold Pad # 1 andPad # 7 at which time an “rt” will appear in thedisplay. You can now follow the chart below as tohow to select the component to operate. While in thistest if you wish to test more then one component youmust always repress the previously selected pad toleave one component before moving on two the next.When the tests are completed you must again PressPad # 1 and the Pad # 7 this will return you to PFmode.

This test can only be entered from a PF (PowerFailure) condition. This can be accomplished in twoways. First is to have the power removed from thedishwasher then turned back on this will show a PFin the display and the test can be entered.

The second method to enter this test is to programthe control into a Water/Test, at the completion ofthis test then open the door the control goes into aPF condition now program the Relay/Triac test. Bygoing through the water test you do not have todisconnect power to the unit and the test can beentered rather quickly.

DESCRIPTION Tota

l tim

e, (s

ec)

Wat

er v

alve

Circ

ulat

ion

mot

orD

rain

Mot

orH

eate

rD

ispe

nsor

Fan

unit

Was

hing

LE

DR

insi

ng L

EDD

ryin

g LE

DSa

nitiz

e LE

DSe

ning

LED

Cle

an L

ED

Device being monitored D

ispl

ay F

lash

es w

hen

dete

ctio

n of

failu

re

FILL/DISPENSER 60 1 0 0 0 1 0 1 0 0 0 1 0 fan damper uoFILL 27 1 0 0 0 0 0 1 0 0 0 1 0 turbidity tuWASH/HEAT (3450rpm) 45 0 1 0 1 0 0 1 0 0 0 1 0 hall sensor hsPAUSE 0.4 0 0 0 1 0 0 1 0 0 0 1 0WASH/HEAT (2800rpm) 75 0 1 0 1 0 0 0 1 0 0 0 0WASH/HEAT/DISP (3450rpm) 60 0 1 0 1 1 0 0 1 0 0 0 0 thermistor thDRAIN 90 0 0 1 0 0 1 0 1 0 0 0 0 fan speed uFDRY 90 0 0 1 X 0 1 0 0 1 0 0 0 rinse aid rATOTAL 447 0 0 0 1 0 1

X- denotes a selectable optionSANITIZE and CLEAN LED stay on until door is opened or cycle started. If the rinse agent is low in the dispenser LO will be displayed in the front display.

18

Relay/Triac and Sensor Test

FUNCTIONPAD TO BE PRESSED

FUCTION PERFORMED

LED ILLUMINATED IN DISPLAY

Start Test

Ultimate Scrub or Maxx Clean & Rinse Only "rt"

Active water valve Pad # 1 watervalve on/offUltimate Scrub or Maxx Clean

valve on =FL Valve off = rt

Test Variable Speed motor Function #1 Pad # 2 (1 Time)

wash motor @ 2800 rpms

Speed Wash pad

First two digits of motor speed

Test Variable Speed motor Function #2 Pad # 2 (2 Times)


Speed Wash pad




Speed Wash pad



wash motor @3450 rpms

Speed Wash pad


Stop Variable Speed Test Pad # 2 (5 Times) Wash motor off None "rt" Heater on/off Pad # 10 Heater on/off No Heat Dry on = HO off = "rt"

Detergent Dispenser Pad # 3dispenser powered Normal Wash on = Sd off = "rt"

Rinse aid level Pad # 7 none Rinse onlylow = RE full = RF off = "rt"

Drain pump Pad # 4drain pump on/off

China Crystal or Party glasses on = dP off = "rt"

Vent/ Fan dry Pad # 5Active vent on /off

Top Rack, Eco Wash Glasses

on = Fan speed off = "rt"

Soil Sensor Pad # 8 none

Wash Silencer or Wash pressure

on = senser voltage reading off = "rt"

Thermistor {Pad # 9 noneWash Temperature

on = Temperature in °F off = "rt"

To access this test the unit must be placed in PF condition. While in PF press and hold Pad # 1 and Pad # 7at which time an “rt” will appear in the display. You can now follow the chart below as to how to select thecomponent to operate. When the test is complete you must again Press Pad # 1 and the Pad # 7 this willreturn you to PF mode.

Pad PadPad PadPadPadPad Pad Pad Pad Pad1 2 3 4 5 6 7 8 9 10 11

19

At time codes may appear in the display below are a list of codes. Not all codes are failure or error codes sobe sure to read what the code means.

Control Codes

Display Reason for CodeWhen is a wash cycle the control does not receive the proper indication that the vent is closed. The control will try to reseat the vent if after 5 attempts the vent does not close the failure will appear. The cycle will not start.

When in the dry mode, the control does not receive the proper feedback from the vent that the fan is running at the proper speed. The failure will appear and the control shuts down

When the control verifies that any of the pads on the membrane switch has been closed for one minute the failure will appear in the display

On power up the control verifies a problem with the options the failure will appear.

The control is not receiving power from the door switch

This will be seen in the r/t test if pad # 4 has been pressed

This will be seen in the r/t test if pad # 1 has been pressed

HO Heat delay The control has extend the length of a cycle to allow for in increase in water temperature

The control has sensed a problem with the Hall style sensor in the wash motor.

LO Low rinse aid The control has received a signal form the rinse aid dispenser that the rinse agent level is low.

The control has experienced drop in power to the processor

The control has sensed a problem with the reed switch in the Rinse aid dispenser

RE Rinse aid The reed switch in the rinse aid dispenser is closed. This can be seen in the r/t test if pad # 7 has been pressed

RF Rinse aid The reed switch in the rinse aid dispenser is open. This can be seen in the r/t test if pad # 7 has been pressed

The control has entered the r/t test program

The detergent dispenser has been activated

tu Tubidity sensor The control has sensed a failure in the turbidity sensor while in the Water Service test.

The control has been programmed for a UL test mode.UL UL test mode

rt Relay/triac test

Sd Detergent disp.

rA Rinse aid

PF Power failure

FL Water valve is on

hs Hall Sensor

CL Door switch open

dP Drain pump operations

"Er" Membrane Switch failure

"CE" Configuration error

What it indicates

"uo" Vent open

"uF" Fan is not running

20

DISASSEMBLY AND SERVICE

SAFETY PRECAUTIONS

Always turn off electrical power supply beforeservicing any electrical component, making ohmme-ter checks, or making a part replacement. Refer tosafe service procedures at the front of this servicemanual before servicing the dishwasher.

All voltage checks should be made with a voltmeterhaving a full scale of 130volts or higher.

After service is completed, be sure all safety ground-ing circuits are complete, all electrical connectionsare secure, and all access panels are in place.

CONTROL PANEL

1. Disconnect the dishwasher from electrical supply.2. Remove the outer door panel;

a. The outer door panel is held to the inner door panel by two screws and four locking tabs, two on each side of the door panel.

b. Remove the lower two screws, one on each side that secures the outer door to the inner panel.

c. Close the door and slide the door panel down and outward to remove.6. Remove the six remaining screws mounting the

control panel to the inner door.

Note: Console will come as console assembly consistingof the following; console, keypad (installed), andfoam blocks around ribbon.

Electronic Control

1. Disconnect the dishwasher from electrical supply.2. Remove outer door panel3. Remove console from top of inner door panel4. Remove control cover (3) mounting screws.5. Remove wires and plugs connectors See Figure 306. Raise ribbon lock and remove ribbon from control

See Figure 307. Remove control

8. On installation make sure all wires are connected in proper location and tight to terminal.

Display

1. Disconnect the dishwasher from electrical supply.2. Remove outer door panel3. Remove console from top of inner door panel4. Remove control cover (3) mounting screws5. Disconnect plug from control to display6. Press in on plastic retainer holding display in to

console, push display out from rear. See Figure 317. Reassemble in reverse order.

Ribbon from Display

Ribbon for keypad

P2 connector

P3 connector

Black wire from door latch

Red wire to heater

Figure 30

Figure 31

plastic retainers

21

Door Latch

1. Disconnect the dishwasher from electrical supply2. Remove outer door panel3. Remove console4. Remove wires from both door switches5. Remove two Torx screw holding latch See Figure 336. Pull latch out at the top from inner door panel and up

to clear location tab on rear of latch. See Figure 327. On installing wires on door switches make sure both

white wires are on one switch and both black wiresare on the opposite switch.

8. Install latch in reverse order.

Door Strike

The door strike mounts to the top frame of tub with two 5/16 bolts the strike is not adjustable. The strike is thepart the door latch attaches to when closed. To replacethe tub will have to be pulled forward to access the twomounting bolts. See Figure 34

Detergent/ Rinse aid Dispenser

1. Disconnect the dishwasher from electricalsupply

2. Remove outer door panel3. Disconnect wiring from dispenser4. Remove six Phillips screws and carefully

push dispenser into the tub

To diagnose operation of the dispenser use theWater Service TestSee the section on testing the control system.

Door hinge


2. Remove outer door panel3. Dishwasher needs to be pulled forward to

replace door hinge4. Check water line and drain hose before

removing counter top screws and pullforward.

5. Remove cable and spring from hinge.6. Remove bolts mounting hinge to inner door

panel. Take care not to damage foam baffleat bottom of inner door panel.

7. Remove hinge pin hold hinge support withpliers while removing pin.

8. Install hinge make sure the shoulder onhinge pin is properly in hole in hinge beforetighten pin.

9. Complete repair in reverse order.

Wax motor

Reed switch connections

Linkage to rinse aid dispenser

Pivot for detergent door latch

Figure 32

Figure 33

Figure 34

Figure 35

Location pins

Lock tabMounting Screws

22

Door Seal

1. Door seal just pulls out of channel around tub.2. To replace find center of gasket make sure back

goes into channel first. Back is marked with acolor stripe.

4. Go to bottom on either side find block moldedinto bottom of tub fill block with gasket.

5. Form gasket into an“L” press gasket upchannel in severalspots. See Figures37&38

6. Repeat steps 4 and 5 for opposite side7. Close door to seat seal.

Bottom Door Seal

1. Remove lower rack from tub2. Open door completely down door seal can be

pulled out from the right side. See Figure 39 &40

3. Pull straight into tub.4. When installing new seal place seal in channel

just enough to hold in place5. Close door for tub to push seal in place.

3. Starting at centertop press gasketinto channel just tohold in place SeeFigure 36

Upper Rack

There are two tub roller assembly, front and rear, on both sides of the tub. Each assembly has a top and a bottom rollers installed on a mounting plate with molded in axles, these assemblies are screwed into the tub using two screws. See Figure41.

1. To remove rack, unsnap and remove retainers atend of metal track. Once retainers are removed,pull rack straight out.

Tub Roller Assembly

Front AssemblyRear Assembly

CENTER SPRAY ARM

1. Pull upper rack forward to gain access to sprayarm.

2. Center spray arm and delivery tube are anassembly, push this assembly to the rear toloosen and remove from rack. See Figure 42

Retaining clip

Push

Upper Spray Arm

To remove the upper spray arm turn the mountingnut counter clockwise to unscrew from delivery tube.If mounting nut is too tight place the handle end ofpliers into the notches and turn to remove.

Figure 36

Figure 37

Figure 38

Figure 39

Figure 40

Figure 41

Figure 42

Bottom

Center cut out

23

Lower Spray Arm, Spray Arm Support& Filter See Figure 43

1. Remove lower rack2. Lower spray arm clips onto the lower spray arm

support lift spray arm off support

Spray arm support & Filter

1. Turn support clockwise 90° lift support fromsump.

2. Filter is now free to lift out

Spray arm support

Lift out basket

Filter

HEATING ELEMENT

1. Disconnect the dishwasher from electrical supply2. To remove element disconnect wiring and

remove two element mounting nuts. See Figure45

3. Lift terminal ends from tub.4. Raise locking hook on mounting brackets to slide

element from brackets. See Figure 44

Heater

FLOAT SWITCH AND MOUNT BRACKET

1. Disconnect the dishwasher from electrical supply2. For ease of service, remove outer door panel

and the kick plate, remover wires to float switch.3. Unscrew Phillips screw holding assembly to tub,

there is a hole provided in the actuator lever toaccess screw. Screw will remain in assemblyonce removed.

4. When installing Switch and bracket onto tubmake sure mount stays tight to tub. See Figure46

Remove float by lifting up out of tube molded inbottom of tub.

WATER VALVE


2. Turn water off to dishwasher before replac-ing valve

3. Gain access to valve remove wiring, waterline, and fitting from valve.

4. Water valve is secured with two screws. SeeFigure 47

Testing water valve and float switch is bestpreformed by using the Water Service Test seesection on testing the control system to start thistest.

Mountingscrews

Figure 43

Figure 44Figure 45

Figure 46

Figure 47

24

DRAIN PUMPTesting the drain pump can be done by using theWater Service Test following the test the drain pumpwill be activated when the number 7 appears on thedisplay then check for power the drain pump. Tostart the Water Service Test see the Section onchecking the Control System.

Replacing the Drain Pump1. Disconnect the dishwasher from electrical supply2. Gain access to drain pump remove wiring and

drain hose from pump. Slide clamp on sumpend of the hose between pump and sump to thecenter of hose

3. Insert small screwdriver into top hole of pumpmount on front of sump, push down on screw-driver to release top mounting hook pull top ofpump back and hold. To help hold this out usesomething small as a wedge between the pumpmount and the sump this will keep this out whileyou move to the bottom lock. See Figure 48

Slide this clamp toward the drain pump

4. Insert screwdriver this time in lower hole of thepump mount, push down and pull back on pumpwill release pump from sump. See Figure 49

5. Pump can now be removed.

PUMP AND MOTOR ASSEMBLY1. Disconnect the dishwasher from electrical supply2. Remove spray arm, spray arm support, and

filters from inside of tub3. Remove outer door panel and kick plate to gain

access to the under side of the dishwasher.4. Disconnect wires from both wash motor and

drain pump, then loosen the clamp on thedelivery tube, the clamp can be reached on theright side, between the sump and the side frameof the unit. The delivery tube clamp has a 5/16inch head. Carefully push delivery tube awayfrom the rear port of the sump. See Figure 50

5. Pump and motor assembly is secured in placeusing four retainers that will turn into sump torelease from tub. Push sump into tub, then byrotating to the right will aid in clearing washpump and drain pump as sump is lifted out.

Remove motor from sump.1. Remove sump from tub2. Remove volute cover and check ball3. Turn sump over and remove motor mounting

bracket (2 screws)4. Lift bracket from sump.5. Return sump to up right position.6. Place end of a flat blade screwdriver in front of

wash impeller and force motor out rear of sump.SeeFigure 51

Sump retainers

Soil Sensor

Wash motorWash motor mounting bracket

Sump retainersclamp on the delivery tubeFigure 48

Figure 49

Figure 50

Figure 51

25

The following repairs will require removing thedishwasher from under the counter. Before startingthe repair, disconnect the power to the product, alsomake sure others are aware that you have turnedthis off for your safety. Turn off the water supply tothe dishwasher and mark the valve as being turnedoff this is again for safety. After the utilities havebeen turned off, lower the dishwasher as much aspossible to prevent damage to the counter. Alwaysuse floor protection as the unit is pulled forward. Vent and fan assembly mounting nut.

DELIVERY TUBE1. With dishwasher removed from under counter

top unscrew and remove the upper spray arm.This unscrews counter clockwise.

2. Remove mounting screw in back of tub. SeeFigure 52

3. Remove clamp from sump end of tub andremove tube.

4. Check hole in back of tub forgrommet to be sure it issmooth and no extra plasticaround opening

5. Install gourmet from insidetub, outside flange must beflat on back of tub. SeeFigure 53

6. To install tube start by placing tube in top of tuband installing upper spray arm loosely.

7. Place center opening of delivery tub into the tub.Be sure to hold grommet in place while pressingtube into opening.

1. With the dishwasher removed from under thecounter either remove the upper rack or just pullforward to access the vent assembly

Vent and Fan Assembly

2. The locking collar holding the assembly in placeturns off to the left (counterclockwise). SeeFigure 54

3. Installing new assembly be sure gasket is inplace and collar locks on completely to preventleaks. See Figure 56

mounting screw

tube

outside flange

8. Reinstall tube on to sump then install centerscrew.

9. Tighten both upper spray arm mounting nut andclamp on sump.

This is a very tightfit pressing downon the outside ofthe assembly canhelp in removingpart See Figure55

Figure 52

Figure 53

Figure 54

Figure 55

Figure 56

26

Control Panel

P30C0157

OverlayControl Board

Control CoverCover Gasket

DisplayBoard

SwitchTail

OuterConsole

LH Console

Foam Insulation

RH Console

ModelsLEDB500FEE0PLD4375RFC0PLD4555RFC0

CONTROL PANEL

27

HandleMountingBacker

Door

Door HingeSupport

Door WiperGasket

P30B0042

DoorAssemblyLiner

Latch Assembly

Clamp

Door Handle

LH ArmAssembly

Spring

FrictionPulleyCable

FrictionPulley

RH ArmAssembly

Detergent/Rinse AidDispenser

DOOR

Model LEDB500FEE0

28

HandleMountingBacker

Door

Door HingeSupport

Door WiperGasket

DoorAssemblyLiner

Latch Assembly

Clamp

Door Handle

LH ArmAssembly

Spring

FrictionPulleyCable

FrictionPulley

RH ArmAssembly

Detergent/Rinse AidDispenser

DOOR

ModelsPLD4375RFC0PLD4555RFC0

P30B0044

29

DONO

TREM

OVE

COVER

NOSERVICEABLE

PARTSINSIDE

DrainHose

TubAssembly

Tub Gasket

WaterInlet

Tubing

Clamps

Float

Clamp

Roller Assembly

Door Strike

P30U0023

FloatSwitch

Assembly

Thermostat

Blower Vent Assembly

VentBezel

Retainer

Roller Assembly


TUB

30

3rd LevelSpray Arm

TUB

TUB

LowerSpray Arm

DeliveryTube Gasket

SoilDirectorBase

Volute Cover

CheckBall

GlassTrap

Spray ArmSupport

Filter

P30M0036

FilterAssembly

SumpHousing

SumpGasket

HeaterBracket

Heater

TurbiditySensor

Pump & MotorAssembly

Bracket

O-Ring

Hose

Hose Clamp

Drain Pump

SumpRetainers

Grommet

CenterSpray Arm

MOTOR & PUMP


31

P30F0022

WaterValve

FrontFrameBrace

JunctionBox Cover

AdjustableToeplate

KickplateAssembly

FRAME


32

SilverwareBaskets

P30R0105

FenceBracket

4 Wire Fence

3 WireFence Slide Rack

Cap

RackAssembly

KnifeHolderBasket Assembly

Snap InHolder

Cup Shelf

Roller

AdjustmentBracket

SlideCap

RackSlide

BracketCup Shelf Fence

Cup Shelf Fence

FoldDownFence

Rack AssemblyRear RollerAssembly

Lower

Upper

Front RollerAssembly

Handle AssemblyRACKS

ModelLEDB500FEE0

33

Front

Rear

Silverware Baskets

P30R0106

Bracket 4 Wire Fence

3 WireFence

RackSlide

Cap

Rack Assembly

Cup Shelf

Roller

AdjustmentBracket

UtilityBasket

Cap

Rack Slide

Bracket

Fold Down Fence

Rack Assembly

Wheel & BracketAssembly

Upper Rack HandleRACKS

ModelPLD4375RFC0

34

SilverwareBaskets

P30R0076

Bracket 4 Wire Fence

Rack Slide

Cap

Rack Assembly

KnifeHolderBasket Assembly

Snap-InHolder

CupShelf

Roller

AdjustmentBracket

CapRack Slide

Bracket

Cup Shelf Fence

Fold Down Fence

Rack AssemblyRollerAssembly

Front

Rear

Upper Rack HandleRACKS

ModelPLD4555RFC0

35

Hall sensor

GLASSES

CHINA/CRYSTAL

ECO WASH

CYC

LES

NORMAL WASH

CLEAN

WASH 18 MIN.

TIMEIN

MINUTES

RINSE 111 MIN.

RINSE 211 MIN.

RINSE 311 MIN.

RINSE 411 MIN.

RINSE 511 MIN.

RINSE 615.5 MIN.

DRY *(HOT OR COOL)22 MIN.

WASH 232 MIN.

DRYING

SANITIZED

WASHING

SENSING

LED

BK.......................... BlackBU............................BluePK............................PinkR...............................RedR-BK...............Red/BlackW............................White

Wiring Diagram

Display Codes (LED)To start

To delay start

Close and latch door. Press START/CANCEL pad.

Close and latch door. Press DELAY START pad toselect desired delay time.

To select a newcycle or option Press desired cycle and/or option pad. The indicator

lights will change. Press START/CANCEL within 15seconds to begin cycle.

To cancel cycle Press START/CANCEL. Dishwasher will drain for90 seconds, then shut off.

For controlslock . . . . . . . . . . . Press and hold the RINSE ONLY or AIR DRY

pad for 3 seconds. To unlock, press and hold theRINSE ONLY or AIR DRY pad for 3 seconds.

SENSING

WASHINGSANITIZEDDRYINGCLEANOPTION LED's Flashing

STATUS LED's Flashing

---------------------- Turbidity sensor is checking the condition of the wash/rinse water.No sensing for LIGHT WASH (UPPER RACK), LIGHT WASH (LOWER RACK) and CHINA/CRYSTAL.

---------------------- Wash portion of cycle.-------------------- The SANITIZED criteria has been met. Indicator light will switch off when door is opened.

------------------------ Drying portion of cycle.------------------------ Shows completion of cycle. Indicator light will switch off when door is opened.

-- HI-TEMP WASH and NO HEAT DRY/POWER DRY OFF LED's flashing indicates power failure hasoccurred. Press START/CANCEL pad and reselect desired options and cycle.

-- The STATUS LED's that are lit when the door is opened will flash. Close door.RINSE AGENT LOW ------- The liquid rinse agent is low. Light will switch off after 5 complete wash cycles or dispenser is filled.

ER/CE....Configuration ErrorER/uo.....Vent will not closeER/uF.....Fan not running

PUM

PM

OTO

R

DR

AIN

MO

TOR

VIO

120V

AC60

HZ

USE

R IN

TER

F AC

E SW

ITC

H

ELEC

TRO

NIC

CO

NTR

OL

BOAR

D

P3-2

P6

BU

DIS

PEN

SER

R-Y

WP3

- 3

WW

HEA

TER

W

HI-L

IMIT

THER

MO

STAT

TURBIDITY SENSOR/THERMISTOR

RP1

WAT

ER V

ALVE

FLO

ATSW

ITC

HPK

P3- 1

W

Y

P3-7

P3-8

RIN

SEAI

DLE

VEL

SEN

SE

BK BKP2

- 8

P2- 7

P3-4

P-5

P3-6

DO

OR

SWIT

CH

WN

EUT

W

L1

BK

BK BK

P3-5 P1

BK

P2-1

W

P2-2

R

P2-3

W

OU

TPU

TS

TURBIDITY SENSE

DISPENSERS

HEATER

DRAIN MOTOR

FAN/DAMPER

PUMP MOTOR

WATER VALVE

WATER HEAT DELAYWATER HEAT DELAY

27450.4

75

60

9090447

60 110

00

00

0

001

11

00

0

000

00

11

0

001

11

0X

1

100

01

00

0

1

1

111

00

000

1

0 000

00

001

0

00

00

010

0

0111

00

000

1

1234

FILL/DISPENSER

STEP

TOTA

LTIM

E (S

EC)

WAT

ER V

ALVE

CIRC

ULAT

ION

MOT

OR

DRAI

N M

OTOR

HEAT

ERDI

SPEN

SER

FAN

UNI

T

SENS

ING

LED

WAS

HING

LED

SANI

TIZE

D LE

D

DRYI

NG L

ED

CLEA

N LE

D

FILLWASH/HEATPAUSEWASH/HEATWASH/HEAT/DISP.DRAINDRYTOTAL

CLEAN LED stays on until door is opened or cycle is started.

X - denotes selectable option

5678

00

00

001

0

(Some models)

00000

0

ULTIMATE/MAXX

P2- 4

P2- 5

P2- 6

BKWR

HAL

LSE

NSO

R

DIS

PLAY

Y/BL

P2-1

3P2

-12

BK-W

P2-1

1

RP3

2-6

BKP3

2-9

FAN

DRY

UN

ITR

-W

RINS

E LE

D

SENS

ING

LED

000

11

000

1

RINS

E LE

D

Devic

e be

ing m

onito

red

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

Fan damper

Disp

lay fla

shes

whe

nDe

tecti

on o

f failu

re

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

000

11

000

1

Turbidity

Fan speedFan speedRinse aid

Thermistor

Uo

TuHS

UF

HS

Th

RA

Display Codes (Readout)

Y-BK.............Yellow/BlackR-W..................Red/White

R-Y..................Red/YellowVIO..........................Violet

BK-W............. Black/White

SPEED WASH

RINSE ONLY

*Note: The Sahara/Maxx Dry will extend drying time by approximately 20 min.

36

Trouble Shooting TipsExploded View of Wash System

Tub and Door Seal

The door seal is pressed into the tub channel for

an interference fit. To install the seal, locate the

center mark on the seal back and press into

Product Specifications

Electrical

Rating ...................................120 Volts, 60Hz

Separate Circuit..15 amp min.- 20 amp max.Motor (Amps) ........................................... 1.8Heater Wattage ....................................... 900Total Amps (load rated) ......................... 10.0TempAssure .............................. 140°F ±5°F

(60°C±3°C) [with outer door in place]TempBoost ............. 145°F ±5°F (63°C ±3°C)

Heated Wash/Heated RinseSanitize .................. 150°F ±5°F (66°C ±3°C)

Hi-Limit Thermostat ................ 200°F (93°C)

Water Supply

Suggested minimum incoming water

temperature ............................. 120°F (49°C)

Pressure (PSI) min./max. ................... 20/120

Connection (NPT) ..................................... 3/8"

Consumption (Normal Cycle) .......................

............. 4.9 - 9.7 U.S. gal., 18.5 - 36.7 liters

Water valve flow rate (U.S. GPM) ........... .83

Water recirculation rate (U.S. GPM) ..............

.................................................... approx. 12

Water fill time ..................................... 87 sec.

To replace dispenser:

• shut off electricity to dishwasher,

• remove outer door panel assembly,

• disconnect wiring to the actuator,

• remove the six screws,

• remove the dispenser,

• replace and reinstall screws,

• rewire actuator.

Check the Following

1. Fuse (blown or tripped).2. 120 VAC supply wiring connection

faulty.3. Electronic control board defective.4. No 12 VAC power to control.5. Motor (inoperative).6. Door switch (open contacts).7. Door latch not making contact with

door switch.8. Touch pad circuit defective.9. No indicator lamps illuminate when

START or OPTIONS are pressed.

1. Motor (bad bearings).2. Motor stuck due to prolonged

non-use.

1. Improper voltage.2. Motor windings shorted.3. Glass or foreign items in pump.

1. Heater element (open).2. Electronic control board defective.3. Wiring or terminal defective.4. Hi-Limit thermostat defective.

1. Latch mechanism defective.2. Electronic control board defective.3. Wiring or terminal defective.4. Broken spring(s).5. Defective actuator.

1. Drain restricted.2. Electronic control board defective.3. Defective drain pump.4. Blocked impeller.5. Open windings.6. Wiring or terminal defective.

1. Water supply turned off.2. Defective water inlet fill valve.3. Check fill valve screen for

obstructions.4. Defective float switch.5. Electronic control board defective.6. Wiring or terminal defective.7. Float stuck in “UP” position.

1. Drain hose (high) loop too low.

2. Drain line connected to a floor drainnot vented.

1. Detergent allowed to stand too long indispenser.

2. Dispenser wet when detergent wasadded.

3. Detergent cover held closed or blockedby large dishes.

4. Improper incoming watertemperature to properly dissolvedetergent.

5. See "Detergent cover will not open."

Always disconnect the dishwasher from the electrical power source before adjusting orreplacing components.

Personal Injury Hazard

is attached by a worm gear clamp to the discharge

end of the drain pump.

The drain hose must have a loop at a minimumheight of 32 inches in order to insure proper

drainage.

The main pump can easily be removed by

disconnecting the upper spray arm supply tube

hose, the drain pump connector hose, the wiring

harness connections made at the circulation

motor, the water heat thermistor located on the

bottom of the pump and rotating the four sump

retainers toward the middle of the sump.

Pump Assembly

The pump assembly is driven by a synchronous

motor. Rotation is in the counterclockwise

direction at 3600 RPM. The motor drives a pump

which supplies 100 percent filtered water at a

rate of approximately 12 GPM to one spray arm

at a time. The spray arm’s operation is alternated

by small “pauses” of the motor during the wash

cycle.

Draining is accomplished by using a small

separate synchronous drain pump mounted to

the side of the sump. The drain pump is

connected to the main pump by a small rubber

hose. The drain check valve is located at thedischarge end of the drain pump. The drain hose

Short Turn

Gasket Cross Section

Detergent and Rinse Aid Dispenser

The detergent and rinse aid dispenser is a one

piece component consisting of a molded

detergent cup and a built-in rinse aid dispenser.

The detergent cup has a spring loaded cover

and the rinse aid dispenser has a removable

cover.

Liquid rinse aid is added to the dispenser up to

the fill line indicator. The amount of rinse aid

released can be adjusted by turning the arrow

indicator from one, being the least amount, to

four, being the greatest amount.

MountingRib

TubInterior

Remedy

1. Replace fuse or reset breaker.2. Repair or replace wire fasteners at

dishwasher junction box.3. Replace control board.4. Replace control board.5. Replace motor/impeller assembly.6. Replace latch assembly.7. Replace latch assembly.

8. Replace console assembly.9. Replace console assembly.

1. Replace motor assembly.2. Rotate motor impeller.

1. Check voltage.2. Replace motor/impeller assembly.3. Clean and clear blockage.

1. Replace heater element.2. Replace control board.3. Repair or replace.4. Replace thermostat.

1. Replace dispenser.2. Replace control board.3. Repair or replace.4. Replace dispenser.5. Replace dispenser.

1. Clear restrictions.2. Replace control board.3. Replace pump.4. Check for blockage, clear.5. Replace pump assembly.6. Repair or replace.

1. Turn water supply on.2. Replace water inlet fill valve.3. Disassemble and clean screen.

4. Repair or replace.5. Replace control board.6. Repair or replace.7. Clean float.

1. Repair to proper 32-inch minimumheight.

2. Install air gap at counter top.

1. Instruct customer/user.

2. Instruct customer/user.

3. Instruct customer/user on properloading of dishes.

4. Incoming water temperature of120°F is required to properlydissolve dishwashing detergents.

Symptom

Dishwasher will not operate whenturned on.

Motor hums but will not start or run.

Motor trips out on internal thermaloverload protector.

Dishwasher runs but will not heat.

Detergent cover will not latch oropen.

Dishwasher will not pump out.

Dishwasher will not fill with water.

Dishwasher water siphons out.

Detergent left in dispenser.

Standard Dry Air Flow

When the control advances to the “dry” portion of

the cycle, a vent actuation solenoid is closed.

This opens the vent valve and starts the vent fan

both located in the top right rear corner of the tub.

The fan draws in the air from outside the tub,

forcing the hot, humid air down and out the

020905

bottom of the outer door panel. This outside,

cooler, dryer air helps to speed evaporation of

water from the hot dishes. At the same time the

heating element is continually cycled on and off.

On some models the dry portion of the cycle can

be extended to improve drying performance.

place. Next, install the bottom of the seal by

creating a short turn at the bottom of the tub

channel and ensuring the seal extends to the

locator ridge at the bottom of the tub. Then align

and gently press the seal into the channel in only

a few spots. Next, close and latch the door to

allow the gasket to seat properly into the channel.

463_9

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Transcript of 463_9