REFRIGERATOR SERVICE MANUAL - Encompass · caution: please read the safety precautions of this...

CAUTION:PLEASE READ THE SAFETY PRECAUTIONS OF THIS MANUAL CAREFULLYBEFORE REPAIRING OR OPERATING THE REFRIGERATOR.

REFRIGERATORSERVICE MANUAL

MODEL:LTNS16121V /00

CONTENTS

SAFETY AND SERVICE PRECAUTIONS ........................

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Removing Refrigerator Door.............................................................................................................................................................................................................................................................................................................

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4. ADJUSTMENTS ...................................................................................................................................................................

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........................................................................................................................Actions for LED blinking and activation current ...........................................................................................................

.................................................................................................. 6.7 LED is blinking 7 times.................................................................................................................................................... 6.8 Check compressor and harness ..................................................................................................................................... 6.9 Another electric components .......................................................................................................................................... 6.10 Problem Diagnosis Chart .............................................................................................................................................. 6.11 Refrigeration Cycle .......................................................................................................................................................

7. COMPRESSOR ....................................................................................................................................................................

...........................................................................................

9. ERRORS ................................................................................................................................................................................

10. EXPLODED VIEW ..............................................................................................................................................................

...................................................................................................... .

1. SPECIFICATIONS

2. PARTS IDENTIFICATION

3. DISASSEMBLY 3.1 Removing the Freezer Door 3.2 3.3 Switch............. 3.4 Fan & Fan Motor .. 3.5 Refrigerator Lamp ... 3.6 Control Panel Disassembly . 3.7 PCB Disassembly .

5. CIRCUIT DIAGRAM

6.TROUBLESHOOTING 6.1 Compressor activation defect ......... 6.2 Compressor service manual . 6.3 Simple verification order .. 6.4 Actions for each number of LED blinking 6.5 ... 6.6 Activation current and LED blinking 6 times .................

8. DESCRIPTION AND FUNCTION OF ELECTRONIC CIRCUIT

3

5

6

77777888

9

11

121213131414151617181920

21

22

27

52

2

3

Extension tube(load)

Con.Hen.

Hansenmaleconnector

Welding point

Service Tube Extension

Breaking point

Pressure

Vacuum

pump

gauge

SAFETY AND SERVICE PRECAUTIONS

RefrigerationSystem

Cylinder of R-134a

Figure # 4

Figure # 1 Figure # 2

Figure # 3

SAFETY PRECAUTIONSPlease read before start your service refrigerator:

1. Disconnect your refrigerator before starting the service in order to prevent electric discharge2. Check visually there's not a gas leakage or short circuit in the refrigerator.3. In case of realize tests with the connected refrigerator, use rubber gloves to prevent any accident.4. If you use any appliance, verify voltage and capacity regularly.5. Don't touch metallic parts with humid hands, they could be adhered.6. Make sure there's no water drain to electric or metallic parts.7. When the freezer door is open and you're checking the low part, be careful when you lift your head, you could get hurt.8. Remove all the glasses, metal or other freely parts when you tilt the refrigerator.9. When servicing the evaporator, wear gloves to prevent injuries from the sharp evaporator fins.

SERVICE CAUTIONS

Refrigerant Charge to CompressorTest compressor operation before recharge the refrigerant, this is important in order to detect immediately failures and assure compressor motor reliability.

If the failure has been identified, clean possible R-134a remnants' in the system breaking the end of the compressor service tube in the thinnest part (as shown in Figure #1).

Change the filter and any other damaged part. Disjoint and pull away the rest of the service tube. Put a new tube extension in the Hansen male connector. Weld the new tube (See Figure #2).

It's necessary to realize the welding process with the opened valve to allow the freely output of gasses from oil.

Use a female connector to join the new tube extension and the Hansen connector with the vacuum pump (see Figure #3).

The vacuum process to the system starts as soon as the pump starts to work. The refrigerator system must be kept under vacuum until the low pressure meter indicate Absolute 0 or -1 atm, -760 mmhg (see Figure #3). In any case, the pump must not be working for more than 30 minutes.

In case of leakage and the vacuum couldn't be realized, it's necessary to apply a small amount of Freon to the system. If the vacuum isn't achieved (the lower pressure meter doesn't indicate Absolute 0 or -1 atm, -760 mmhg) turn on the refrigerator and try to localize the leakage with a leakage locator. If you identify a welding failure, open the valve to normalize the interior pressure with the same exterior pressure before welding. The molten solder could be suctioned or expelled and block the cycle tubes if the vacuum system isn’t stabilized.

As soon as the vacuum process is finished, charge the correct refrigerant R-134a gram amount in the system. Remember, each system use an exact R-134a amount with a tolerance of ±5 grams (see Figure #4).

4

Vacuum pump

Valve must be closedafter achieving a vacuum

Chargingthe cylinder

Refrigerator

System

RefrigerantLoading tube

Valve should be openwhen refilling the gas

Figure # 5

To know the refrigerant amount that contains and that it’s necessary to be charged to the system, review the graduated scale cylinder. For example, if we have 750 grams Freon in the cylinder and we must charge 165 grams to the system, this amount will be reached when the cylinder indicator shows 585 grams. Remember that the charge indicator shows a lower lever than real. Do this after select the scale that corresponds to gas pressure indicated in the pressure meter attached in the column upper part.

Before performing this operation, make sure that the valve attached between the vacuum pump and recharge cylinder is closed in order to keep the Freon to be charged into the system (see Figure #5).

To make R-134a flow to the system, open the valve whichis attached in the cylinder base and is connected to the filling tube. The Freon gas amount must not be completely charged in one session because it could block the compressor motor; therefore, charge 20~30 grams and immediately close the valve, the pressure increase and the compressor motor start the suction, this make pressure decrease, open the valve again and repeat the previous steps until rise the established amount of R-134a gas for the system. When the system is under operation, the suction pressure must stabilize between 0.30 and 0.6 atmosphere of pressure.

1. SPECIFICATIONS

8

MODEL

LTNS16121V

Platinum Silver 3

31 (W) x 29 (D) x 71 (H)

83 KG

15.7

R134a (133 gr)

Template (N)

115V/60Hz

Fan Cooling

MICOM Control

Heater Defrost

Cyclo Pentanane

BLDC Inverter

Fin Tube

Wire

Molecular Sieve XH-7

ID Ø0.67

4 Hours

7-40 Hours

Heater, Sheath

PCM (Normal)

PET

Curved Handle

LG

4 full

"Twist" type

Yes (LED)

2 Glass

Yes (1)

No

Yes

Yes (1)

No

No

2 full

No

Glass (1)

SPECIFICATIONS

GEN

ERA

L FE

ATU

RES

Color

Dimensions (in)

Net Weight

Capacity (cu ft)

Refrigerant

Climate Class

Rating

Cooling System

Temperature Control

Defrosting System

Insulation

Compressor

Evaporator

Condenser

Egg Tray

Hygiene Filter

Water Dispenser

Drier

Capillary Tube

First Defrost

Ciclo de Deshielo

Defrost Cycle

FREE

ZER Basket

Lamp

Shelf

FRID

GE

Case Material

Door material

Handle Type

Internal Graphics

Basket

Ice Tray

Lamp

Shelf

Vegetable Drawer

Meat Tray

Cover TV (Tray Vegetable)

NOTE: Your refrigerator could have some or all of the features and parts listed below. The location of someof the parts may not correspond with your model.

2. PARTS IDENTIFICATION

Freezer Shelf (Glass)

Moving Twist’n Serve (Ice Maker)

Internal Temperature Control (Refrigerator)

Refrigerator Lamp (LED)

Refrigerator Shelf (Glass)

Magic Crisper,Cover for vegetable drawer, it controls humidity

Vegetable Drawer,Keeps fruits and vegetables fresh

A

6

I

J

K

L

K

H

A

B

C

F

G

D

E

M

I

Leveling Screws

Freezer Big Basket

Temperature Control (Freezer)

Refrigerator Big Basket

Multi Flow Air Duct,Distributes air to all refrigerator compartments

Egg Tray

B

C

D

E

F

G

H

J

K

L

M

I

3. DISASSEMBLY3-1. DOOR

7

Freezer Door Remove the top-hinge cover by using a Phillips screwdriver. 1.

Remove the middle hinge bracket.2.

Counterclockwiseto remove

Remove the three bolts with either a 10 mm or 3/8 in. socket wrench, and lift off the top hinge. Set the parts aside.

2.

Top Hinge

Carefully lift up the freezer door from the middle hinge bracket. Place the door on a non-scratching surface.

3.

Hinge Pin

Middle Hinge Bracket

Carefully lift up the refrigerator door from the bottom hinge pin. Place it on a non-scratching surface.

3.

Bottom HingePin

3-2. DOOR HANDLERemove the top side of the handle by using a flathead screwdriver.Using a Phillips screwdriver, remove the screws that are attached to the door.Pull out the handle to remove.

1.

2.

3.

Loosen and remove the two bolts with the socket wrench.1.

Middle HingeBracket

Bolt

Refrigerator Door

NOTE: Place the top hinge cover on the cabinet and make sure do not damage the wires assembled to it.

Handle TopSide

8

3-3. DOOR MAGNETIC SWITCH

1 2

3-4. DOOR GASKETTo remove the door gasket, pull it out from any corner untildetaching it. Keep pulling it until remove it from all framedoor.

3-5. DOOR BINSThe door bins are removable for easy cleaning and adjustment.1. To remove the bin, simply lift the bin up and pull straight out.2. To replace the bin, slide it in above the desired support and push down until it snaps into place.

3-6. SHELFS

To remove the door switch, remove it with a screwdriveras shown in below figure.

1.

Disconnect the lead wire from the switch.2.

1. Lift the back of the shelf from below.2. Use enough force to lift the shelf and release it from the holders.3. Slide the shelf forward to remove it completely.

Shelf

1

Holder2

Shelf

3

1. Ice bin must be removed in order to remove ice tray2. Once ice bin is removed, pull out ice trays.3. Fill ice trays to the indicated level.

4. Icemaker can be moved from one side to the other to suit your individual storage needs.

1

2

Ice Bin

Ice Trays

3

3-7. ICEMAKER

P/No & MFG Image

3.8 COMPONENTS: MAIN PCB

EBR808608**

9

CON1: Power SourceCON2: AC loadCON5: F-Fan Motor DCCON6: DisplayCON8: Sensor, R-Door Switch, R-LED LampCON9: PCB Assembly Smart Buzzer (SDS)CON102: OLP InverterCON201: Compressor Terminals

CON1

CON201

CON8 CON9

CON5

CON6

CON2 CON102

P/No & MFG Image

3.8 COMPONENTS: LED LAMP (REFRIGERATOR AND FREEZER)

RefrigeratorLED LampEAV61472005

Smart Buzzer EBR64730409

10

PCB for SDS (System Diagnosis Intelligent)

3-11. PCB To replace the PCB, you must first remove the connectors that are connected, you should just press on the lock to remove. The case PCB that is holding PCB has a lock for secure it, for disassembly pull out the lock applying som force (as shown in the image above)while removing PCB. To assemble the new PCB, do the same inreverse (the cables can not possibly be assembled in an incorrectconnector).

11

5

3-9. FAN MOTOR AND FAN 1. Remove the shelves from freezer compartment.2. Loose the screw placed in fan grille (use a Phillips

screwdriver ).3. Hold the upper side of the shelf and pull it out carefully .4. Remove the plastic cover from the fan by pulling it put

carefully .5. Unplug the wires.6. Loose the two screws that hold the motor support and pull

it out in order to remove the fan and fan motor .7. Remove fan from motor support .

12

3

45

1 22

3 4

5

3-10. CONTROL PANEL DISSASSEMBLY1. Remove refrigerator shelves.2. Loose and remove the screw placed in the lower side of the

panel.3. Take the panel from the lower side and pull it out in order to

remove it from refrigerator.4. Press the connectors to release them.

1 2 3

3-12. PCB DISSASSEMBLY 1. Loose the screws from the cover.2. Remove the cover

1

2

12

3-12. PCB DISASSEMBLY3. Disconnect all the terminals.4. Remove the PCB by pressing the hooks placed on

lower side.5. Remove and replace the PCB (just if it’s necessary).

3 4

5

FREEZERCOVER DEFROST CONTROL

3-13. DEFROST CONTROL

1. Remove freezer cover, then take out the grill fan.2. Disconnect the wire that is connected to the defrost controlassembly and replace it (just if it’s necessary).

3-14. CYCLE SYSTEM

For access to cycle system, remove the screws attached to theback cover, then remove it.

For removing the Drip Tray1. Remove the screws attached to the tray.2. Remove the fan.3. Loose the guide fan.4. Remove the guide fan.

1 2

3 4

5. Remove the pipe drain.6. Remove the screws from the condenser bracket.7. Carefully pull out the condenser for removing it from the

support and lift it.8. Remove the drip tray to the left side in order to release

the locks placed on its bottom side.

5 6

7 8

The defrost control assembly consists of a sensor and a malleable fuse that opens with heat. The sensor function is to control the temperature and automatically finish the defrost, the transmitter is placed on one side of the metal part of the evaporator. The malleable fuse is a safety device for prevent-ing overheating of the melt strength when working. At a temperature of 77 ° C the fuse opens and the resistance stops emitting heat.

13

1 2

3 4

1

9. Disconnect the power source of the motor.10. Remove the motor from the tray using a screwdriver.11.Remove it carefully for avoid the pipes to colapse.12.Lift the condenser and place carefully the new tray.

NOTE: For assembly the new tray, follow follow in reverse the above steps.

For removing or replacing the motor1. Disconnect the power source.2. Remove the screw from the guide fan.3. Remove the guide fan (release the locks placed on its bottom

side).4. Remove the fan.

5. Quite los tornillos que sujetan al motor.6. Retire el motor y reemplacelo.

9 10

11 12

5 6

For removing or replacing the fan motor1. Disconnect the power source.2. Remove the screw from the guide fan.3. Remove the guide fan (release the locks placed on its bottom

side).4.Remove the fan.

1 2

3 4

NOTE: For assembly the motor, follow follow in reverse the above steps.

NOTE: For assembly the new tray, follow follow in reverse the above steps.

4. CIRCUIT DIAGRAM

14

5. TROUBLESHOOTING

5.1 COMPRESSOR ACTIVATION DEFECT

15

1

Indicator LED for errors ofInverter Compresspr

1. Open the cover of Main PCB.

2. Check the number of LED that are blinking (Refer to next chapter, Actions for each number of LED blinking).

3. Open the back cover.

4. Check temperature of discharge pipe and compressor.5. Check if fan freezer is working.6. Check the disconnection between OLP and compressor (U, V, W= Red, Blue & Yellow).

Check the performance after forcing it in TEST MODE in the PCB and readjust the power after checking the voltage in thecompressor side.

Location of Test Mode Buttonon main PCB

2

3

4

5

6

5.2 COMPRESSOR SERVICE MANUAL

5.3 SIMPLE VERIFICATION ORDER

1. Check LED Remove the PCB cover and check the number of blinks that are on the LED. Verify the actions for each number of LED blinking � Check when it is not RESET (before turning off the refrigerator). Write the service information according to the quantity of LED blinking. Write the service information and check again after power reset.

� Refer to the actions for each number of LED blinking.

Is LEDblinking?

Leakage

There’s no cold air

Check again

Reset

ResetLED blinks 1 time

Yes

No

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes Yes

Reset

Reset

LED blinks 7 times

LED is bliking6 times

ReplaceCompressor

Replacemain PCB

Checkagain

Heavy repair

Is compressorworking?

CheckCompressor(Check C)

IPM Output>

80V-20%

16

CheckCompressor(Check C)

Is compressorworking?

Leakage

Checkagain

Replacemain PCB

Replacemain PCB

LED blinks 1 time

LED blinks 7 times

LED is bliking6 times

Heavy repair

5.4 ACTIONS FOR EACH NUMBER OF LED BLINKING

LED 6 times repeated

Blink Blink Blink Blink Blink Blink Off Blink Blink Blink Blink Blink Blink Off

1


Blink Blink Blink Blink Blink Blink Blink Off Blink Blink Blink Blink Blink Blink Blink Off

2

LED 1 time repeated

Blink Off Blink Off Blink Off Blink Off Blink Off Blink Off Blink Off Blink Off Repeated

3

No. LED Operation Status Cause Service Tips

AD OffsetError

Circuitovercurrent

error

PCB Defect(IPM)

1. Check normal operationafter power reset.

2. If the same error occursagain, replace PCB.

Repeated

Repeated

5.5 ACTIONS FOR LED BLINKING AND ACTIVATION CURRENT

1. LED blinking 1 time (AD Offset Error)

Purpose: Detect motor voltage or current detection defect. Actions: Check CC326 voltage, if it’s out of the range 2.2~2.8V, PCB must be replaced.

Blink OFF Blink OFF

Checkprotection

logic

Replace PCB

Power reset

Is it out of specification?(2.2-2.8V)

LED blinks 1 timeAD Offset Error

Yes

No

17

4


Blink Off RepeatedBlink Blink Blink Blink Blink Blink Blink Blink OffBlink Blink Blink Blink Blink Blink Blink



3. If the same error occurstwice, replace compressor.





CommunicationError

Cause: PCB with short circuit, defect part detection.

Activation current and LED blinking 6 times (Activation Current) .2

Blink Blink Blink Blink Blink Blink OFF

CC326

18

6 times blinking (activation current) may occur in a temporal disconnection situation like when refrigerator is turn on/off for 3minutes.

1. If it’s blinking 6 times but there’s no a significant difference between the temperature inside the refrigerator and the settemperature, there’s no problem in PCB, Compressor or refrigeration cycle2. If it’s blinking 6 times and problem such as no cooling occurs, it means cycle leakage or cycle clogged (moisture, trash).

Cause: Cycle leakage or clogging, excessive increase in compressor temperature, compressor piston is locked, PCB IPM,device is burned due to condenser fan defect.Cause: Over-current protection.Action: Check PCB output, verify compressor operation, leakage inspection and check cycle clogging (for re-vaccum, 30minutes in additional vaccum).

Checkprotection

logic.

Check current or LED that is blinking 6 times (current trip)

Intermittentoperation of compressor

Check PCB output

Checkcompressor

defect

Replacecompressor

Check inspection procedure again

Did current trip occur?

PowerReset

Replace PCB

Check harness PU.V.W.

Modify harness P

Yes

Yes

Yes

Yes

No

No

NoNo

Check PCB output

3. LED is blinking 7 times (IPM Fail)

U

Ground

19

Cause: IPM with short circuit, defect (burned or damaged).Purpose: Protection of the over-current caused by IPM with short circuit or defect.Actions: Visual verification of burned IPM when the compressor is not operation. Check if there’s a short circuit in U, V, o W.Replace PCB.

U part among 3 compressor phases connectors (CN201)Ground

Replace PCB

Check protection

logic

Check IPM Fault orLED blinking 7

times(IPM Fault)

Compressor is not activated

Powerreset

Check again inspection procedure

Visualverification of

IPM burnCheck Point A shortcircuit IPM output

>80V-20%

Yes

YesNo

No

5.6 CHECK COMPRESSOR AND HARNESS

Freezing capacity is poor

20

5.7 ANOTHER ELECTRIC COMPONENTS

U W

VMultiTester

U W

V

Compressor Terminal

Motor resistance

7.96 +/- 0.8

Compressor

BMA069LAMV

� Measure the resistance of compressor connector (Power & Common).� Verify isolation resistance: Measure the resistance between the COMP power connector and the ground connection.

Resistance values can vary some according to the environment temperature and the operation conditions.

Note: Check resistance by disconnecting PCB connector

Poor contacting.

In short circcuit

Fan motor is notworking

Check that current is flowing in door switch.

Check that current is flowing in the fan motor.

Coil is making short circuit

Replace eachcomponent

Check the current flow in the next components:��

Check the current flow in the next components:��

Big amount of ice is placed in the evaporator



5.7 ANOTHER ELECTRIC COMPONENTS

21

Short

Poor and/or opencontact

Increase voltage Low voltage


Cause

Coil is shorted

Damaged contact

Short

Compressor coil

Low capacity

a. Starting components Short circuit or open.

Freezing capacity is poor

Check initial voltage

Check OLP capacity

Items already describedare OK?

Check if current is flowingto other components

Check OLP capacity

Check current flowingin fan motor

Fan motor is not working

Heavy frost build upon Evaporator


Replacecompressor



Compressor isnot working

Check if the power flowsto the next components:

Poor contact or shorted.

Coil is shorted.

Poor contact or shorted.

Compressor is notworking efficiently

Check if current is flowingto compressor coils.

Compressor coil

Short circuit parts

Check that current flowsin the next component:- Def control assy

Check that current flowsin the next components:- L-Cord- Heater Plate


Freezing capacity is not posible

5.8 PROBLEM DIAGNOSIS CHART

22

Repair the cycle

The cycle is not

Check therefrigeration system

Check if humidity is

compartment

Not defrosting

Replace the components

of the defrosting circuit

PROBLEM

Freezing is not possible

CHECK POINTS SOLUTION

¿Is the power cord unplugged from the outlet?Check if the power switch is set to OFF.Check if switch fuse has short circuit.Measure the voltage of power outlet.

There are abnormalnoises.

Freezing is poor (notenough).

Freezing is notefficient.

Food in refrigeratorcompartment is freezing.

Humidity or ice areinside refrigeratorcompartment.

Humidity is formedin cabinet (refrigerator

Door closing is noteasy.

Ice and food have anunpleasant odor.

For other possible problems, make reference to the next points in order to solve problems:

Check if the refrigerator is placed so close to the wall.

Check if the refrigerator is placed so close to the stove,gas oven and sunlight.

¿Is the ambient temperature high or the door is closed?

Check if hot foods have been recently stored.

¿Was the door continuously open or was not properlyclosed?

Plug to the outlet.Set power switch in ON position.Replace with a normal fuse.If the voltage is low, report this condition with your

Leave a clearance of 10 cm between refrigerator and

Place your refrigerator away from heat sources.

Decrease temperature in the room.

Storage the food when is already cold.

Do not open the door so often and close it firmly.

Ambient temperature is too low (10° C)..

¿Is there food placed in the cooling air outlet?

Check if the temperature control is set in 3.

¿Is liquid food storage?Hot food was placed inside the refrigerator.The door was continuously opened or it’s not properly

If the humidity and the ambient temperature are high.

There’s a gap between the door gasket and the cabinet.

¿Is the unit placed over a firm and even surface?¿Is there any unnecessary object placed in the back sideof the refrigerator?Check if the drip tray is not firmly fixed.Check if the compressor cover is properly is in itscorrect position.

Check if the door gasket is clean.¿Is the appliance placed on proper floor conditions?¿Is there a big amount of food inside the refrigerator?

Check if the inside of the unit is dirty.Foods with a strong odor were not properly wrapped.It smells like plastic.

For a cooler freezer you must set the temperature ina position between 2-3 and set the refrigerator controlin position 7.

Place the food in the high-temperature section(front part).Set the control in 2.

Seal the food with vinyl wrap.Store food when is already cold.Do not open the door so often and close it firmly.

Wipe moisture with a dry cloth. It will disappearin low temperature and humidity.

Repair the gap by changing the door gasket.

Adjust the leveling screws and place it in a firm place.Remove the objects.

Fix the tray in its original position.Place the cover in its original position.

Clean door gasket.Place over firm door and adjust the leveling screws.Check that the food is not blocking the doors.

Clean the inside of the unit.Wrap all the foods with a strong odor.New products usually smell like plastic, but thiscondition disappears 2 weeks later.

electrical company.

walls.

closed

exterior).

working

formed in freezer

5.8.1 TEMPERATURE SETTINGS CHART

The next table explains to you the recommended temperature adjust in relation with food amount:

23

Food Amount erutarepmeT rezeerF* erutarepmeT rotaregirfeR

When a large amount of food is stored you need to adjust the controls in the coldest temperature (for refrigerator) and normal temperature for freezer compartment.

To reach a colder temperature verify that the lastLED is turned on.

Adjust the control in position number 3.

When you store a regular amount of food, both controls must be adjusted in middle position.

To adjust in a medium temperature you must verifythat third LED is on.


For a refrigerator with a low amount of food, it’s necessary adjust the controls in the less cold positions.

For a less cold temperaturlight is on.

e verify that only the �st


* Refrigerator control may vary according to y��

)

2

2

2

)

)

PI ZZA!

LEC

LEC

SODA

SODA

SODA

Jug

Helado Helado

YogurthYogurth

Mantequilla

CARNE CONGELADACARNE CONGELADACARNE CONGELADA

P I ZZA!

LEC

SODA

SODA

Jug

Helado

Yogurth

Mantequilla

CARNE CONGELADACARNE CONGELADA

LEC

SODA

Helado

Yogurth

Mantequilla

CARNE CONGELADA

5.9 REFRIGERATION CYCLE

Troubleshooting Chart

Leakage Detection Observe the discharging point of the refrigerant in the compressor and evaporator.

Compressor starts working?

Yes

Check electricalconnections

No

Check status for

PTC & OLP

Se forma escarcha en evaporador

Se forma escarcha en evaporador

Escarcha en todo el evaporador

Clogged bymoisture

Hacer barrido a tuberías para limpiar el sistema


No se forma escarcha o solo en la entrada del evaporador Existen fugas

de aceite

SiGas leakage Detect leakage

and repair it

No

Breakeservice tube

Observar cantidad de refrigerante expulsado

Cantidad normalCompressor

with failures

Removecompressor

Hacer barrido a tuberías para limpiar y/o remover residuos de humedad del sistema

Cambiar Drier

Hacer barrido a tuberías para limpiar y/o remover residuos de humedad del sistema

Cambiar Drier

Install compressor(new or repaired)

Hacer vacío al sistema y cargar refrigerante


Nada o poca cantidad

IF the problempersists

Start


Cambiar Drier

Start




Cambiar Drier



24

PARTIALCLOG

COMPLETECLOG

CLOGGED BYMOISTURE

NO

CAUSE

PARTIALLEAKAGE

STATE OF THE UNIT

COMPRESSORTEMPERATURE

STATE OF THE EVAPORATOR

REMARKS

COMPLETELEAKAGE

Cooling operationstops running periodically.

There’s no compression work.

A few amount of refrigerant has beendischarged.Normal cooling is possible when a regular amount of refrigerant has beencharged.

Normal discharge of refrigerant.

Normal discharging of the refrigerant.

The capillary pipe is faulty.

No discharging refrigerant

COMPRESSION

The pressure of the high pressure section of the compressor is low.

There’s no pressure in the highpressure section of the compressor.

LEA

KA

GE

SC

LOG

GE

D B

YD

US

TD

EFE

CTIV

EC

OM

PR

ES

SIO

N

Freezer compartment and refrigerator

don’t cool normally.

Low flowing sound of refrigerant is heard and frost forms in inlet

only.

A little higher thanambient temperature.

Freezer compartment and refrigerator never

cool normally.

You cannot hear the sound of the refrigerant flow and the frost

is not formed.

Equal to ambient temperature.

Freezer compartment and refrigerator do not

cool enough.

You can hear the sound of the refrigerant flow and the frost is

only formed in the inlet.





Lower thanambient temperature.

You can hear the sound of the refrigerant flow and the frost is

not formed.


is melting.

Low flowing sound of refrigerant is heard and frost forms in inlet

only.


is not formed.

Freezer and Refrigeratorare not cooling

Freezer and Refrigeratornever get cold.

Normal cooling is possible when a regular amount of refrigerant has beencharged.

Cooling operation restarts whenheating the inlet of the capillary pipe.

COMPRESSION

Start

Start

Start

Detect leakageand repair it

Gas leakage

Soldadura de Plata (Composición Química) Ag (Plata): 30%, Cu (Cobre): 27%, Zn (Zinc): 23%, Cd (Cadmio): 20%Temperatura de soldadura: 710 ~ 840 °C

CBCuP2 Soldadura de Cobre (Composición Química)Cu (Cobre): Alrededor de 93%, P (Fosforo): 6.8~7.5%Resto: un 0.2%Temperatura de soldadura: 735 ~ 840 °C

ComposiciónBorax (Borato de Sodio): 30%Borax (Borato de Sodio): 35%Fluoruro de Kalium: 35%Agua: 4%

PreparationMix all the ingredients

Ensamblar el secador (drier) inmediatamente después de su desempaque.Mantener el secador (drier) desempacado a una temperatura de 80 ~ 100 °C.

Realizar el vacío en el sistema hasta que el valor sea menor a 0.05 torr.

La presión del aire seco deberá estar entre 12~16 kg/cm².La temperatura deberá estar entre 20 ~ -70 °C.

Check leakages using water and soup.Replace cople (in case of leakage).

Place all copper connecting pipes in a clean box and close it well to prevent dust and moisture from entering.

5.10 CONTROL GENERAL DEL CICLO DE REFRIGERACION

ObservacionesContenidos y EspecificacionesTemas.oN

2 Flux

3 Drier assembly

4 Vacío

5 Aire seco y gasde Nitrógeno

6 Niple y Cople cople.

7 Pipes

1 Welding rod

26

Se recomienda H34 conteniendo un 34% Ag en el centro de servicio.

Preparar solo la cantidad diaria.Life time: 1 day.Cerrar la cubierta del contenedor para evitar que la suciedad se mezcle con el flux.Store inside a stainless steel container.

Utilizar un medidor de vacío sin fallas.Llevar acabo la operación de vacío apropiado hay que checar fugas en la linea de ciclo y en la conexión del adapta-dor.Si no alcanza un grado de vacío apropiado, hay que checar fugas en la línea de ciclo y en la conexión del adapta-dor.

Keep the drier in a dry place, keep it awayfrom humid places.

U W

Terminal Compresor

Multitester

B OLP

C

6. COMPRESSOR6.1 How to find out Inverter BLDC Compressor defectIf Inverter BLDC Compressor defect occurs, you can check in the following order.

Standard for judging normality�� o!�� $��<�@��[\]^_!`�� shows the value of the level in the following figure, you can say that it is normal.

Standard for defining compressor defect Disassembly compressor PTC cover and verify that is correctly �� <�� !`��{��

the figure, if it’s correctly connected you must check directly the compressor resistance for doing so you have to disconnect �� |�}� {�� V`��, V��!�� ’��$�� ^��[��!`� ��}��}��$��[�P. During compressor defects diagnosis, through resistance measu�� `��}� {�� `�V`��

�[\]^_��<�� A) show the resistance value according compressor specification then the compressor motor is correct.��|� �� [�P� ��<�� @!�� , if it’�� [�P resistance between its

terminals. If the resistance value is 5 or lower, it’s normal condition. In case that the value is higher̀ � ��[�P is damaged and as consequence there’s no voltage supply from PCB and compressor will not work; it’��$��[�P and check again the correct performance. If there’�� [�P resistance values issues, it could be compressor defect, check the compressor resistance.

If there’s no problem with compressor resistance value, it could be Main PCB defect, you must check Main PCB defects section.

Caution_� Turn off the refrigerator and make sure is unplugged, if you are going to perform some measures wait few minutes after the device was unplugged.]�� `�� be a wrong diagnosis due to the resistance may vary according to the ambient temperature or operation conditions.

VCON 201A

Multitester

U W

VMultitester

Motor Resistance

��^��

Compressor

@��^��

A difference of some can occur in the resistance value due to ambient temperature and operation conditions.

]�

TempLow / Middle Middle / HighControl Low Middle High

TEMP(ºC)

COMPARTMENT REFRIGERATOR

: ON :OFF

7-1. FUNCTION

27

1. When the appliance is connected, the temperature is set in the middle setting. Every time the button is pressed the displaychanges as follows: “R2”

2. When there’s a power interruption, the temperature will be set in the last selected temperature.

R0 R1 R2 R3 R4

7. DESCRIPTION AND FUNCTION OF ELECTRONIC CIRCUIT

7-1-1 TEMPERATURE CONTROL FUNCTIONING

SOUND

Closed Open

1 minute 30s 30s 30s

3 times 3 times 3 times 3 times

Freezer and refrigeratordoors are open

Less than 1 minute

OpenClosed Closed

Door alarm LEDTurn on Turn off

28

7-1-2 CONTROL OF FREEZER COMPARTMENT FAN1.- When the freezer or refrigerator doors are open, the fan motor will be on for 60 seconds.

7-1-3 OPEN DOOR ALARM1. If the door is left open for more than 1 minute, the alarm will sound 3 times in thirty seconds intervals.2. This function makes sound the alarm every time that one door is left open for more than 1 minute. 3. The sound of the alarm will stop when the door is closed.

7-1-4 “DING” SOUND

7-1-5 DEFROST

1. When a button is pressed on the display, a “ding” sound will be heard.

1. For the initial turn on, only for unique time, the defrost begins when the compressor reaches 4 hours of being turned on.

2.The defrost begins when the accumulated turned on time of the compressor is between 7 and 50 hours. This time isdetermined by the frequence and duration of the refrigerator doors opening.

3. The defrost stops when the sensor temperature reaches 13°C or more. If the sensor does not reach that temperature in aperiod of 2 hours, the defrost mode will not work properly.

4. The defrost process does not work if the sensor is damaged (if the wires are cut or short circuit).

0.5 secondsConect Compressoris working

OperationConditions

OperationSequence

Whe

n th

e re

frig

erat

or is

turn

on 0.5 seconds Freezer

fan is on

0.5 minutesAll loadsare off

Compressoris on

0.5 seconds Freezer fanis on

If the temperature of thedefrosting sensor is 45 °C or above (for theinitial use after the purchase or grounding).

If the temperature of the defrosting sensor is below 45 °C (after a power failure or SVC).

When is returned fromTEST MODE.

29

7-1-6 OPERATION SEQUENCE FOR ELECTRIC COMPONENTSThe electric components operation such as compressor, defrost resistance and fans is sequently started in order to avoid noisesand damages in the parts, this can result when several components are running at the same time or after a test has finished.

5s0.5sTurn onrefrigerator

Defrost heater is on

5.5sCompensationresistance is on

Compressorand Freezerfan are on

4min

0.5sDefrost heater is off

Compensationresistance is off

: ON :OFF

No ErrorError shown on display

Cause R0 R1 R2 R3 R4 Compressor / Fan Defrost Heater

1.

2.

3.

4.

15 min ON/15 min OFF

No defrosting

Operation Status with error

Al presionar botón de ajuste porun segundo.

30

7-1-7 ERRORS DIAGNOSIS MODE

1. The error diagnosis function allows to the technician or service center see if a failure is affecting product performance duringits normal operation.

2. The refrigerator has a failure when the button is and the LED on does not change position.3. When the problem has been solved and the refrigerator is working again, the error will disappear.4. The error code is shown in temperature indicator (LED where the refrigerator temperature is adjusted).

Failure on refrigeratorsensor (placed insiderefrigerator control box)

Failure on defrostsensor.

Short circuit, non continuouswires of refrigerator sensor.

Failure on ambienttemperature sensor.

Failure on defrostoperation.

Short circuit, non continuouswires of defrost sensor.

Short circuit, non continuouswires of temperature ambientsensor.

- M-Fuse open- Defrost heater is open or broken- Heating relay is broken- Blocked drain

5.

6.

Failure on Fan Motorat Freezercompartment

Failure on Fan Motorat mechanic room.

If there is no motor signal (motor could be locked)

If there is no motor signal (motor could be locked)

7-1-8 TEST MODE

.

31

The test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of anerror.The test button is on the main PCB of the refrigerator (Test S/W).The Test Mode will be finished in 5 minutes in Test Mode 1 and it will last 2 hours in Test Mode 2 or until the defrost sensor reaches a temperature of 13°C (55.4 °F) or more, after this the original conditions are set again.While the Test Mode is in process, the tone of the button for temperature adjustments won’t be able.After you leave Test Mode, make sure of unplugged the refrigerator.In case of an error, such as sensor failure, and if it’s detected during the Test Mode, the error code will be display in the LEDerror indicator.While an error is detected, the Test Mode will not be activated until the error disappears from display.Test Mode for LED: When the temperature button is pressed for more than 1 second, each LED on display will be on simultaneously. When you stop pressing the button, the Test Mode will be off.

MODE

RESET

TEST MODE 1

ACTION1. Continuous operation of compressor.2. Continuous operation of freezer fan.3. Defrost heater is OFF.4. All LEDs on display are ON.

1. Compressor is OFF.2. Freezer fan is OFF.3. Defrost heater is ON.4. LED #1, #3 & #5 are ON.

Reset to the original conditions.

Press Test Mode button.

Press once more the Test ModeButton while you are in Test Mode 1.

Press once more the Test ModeButton while you are in Test Mode 2.

CONTENT REMARKS

Reset if the defrost sensortemperature is 13 °C ormore.

The compressor will startworking after 7 minutes.

<LED status for Test Mode 1> <LED status for Test Mode 2>

: ON :OFF

TEST MODE 2

TEST MODEBUTTON

7-2 RESISTENCE, VOLTAGE & SPECIFIC TEMPERATURE FOR SENSORS

°C °F-26.0 -14.8 104.60 4.00-24.0 -11.2 94.30 3.92

-22.0 -7.6 85.14 3.83

-20.0 -4.0 76.96 3.73-18.0 -0.4 69.66 3.64

-16.0 3.2 63.13 3.54

-14.0 6.8 57.29 3.44

-12.0 10.4 52.05 3.33-10.0 14.0 47.34 3.22

-8.0 17.6 43.12 3.12

-6.0 21.2 39.31 3.01-4.0 24.8 35.88 2.89

-2.0 28.4 32.79 2.78

0.0 32.0 30.00 2.672.0 35.6 27.47 2.56

4.0 39.2 25.19 2.46

6.0 42.8 23.12 2.35

8.0 46.4 21.24 2.2410.0 50.0 19.53 2.14

12.0 53.6 17.98 2.04

14.0 57.2 16.57 1.9416.0 60.8 15.28 1.85

18.0 64.4 14.10 1.75

20.0 68.0 13.03 1.6722.0 71.6 12.05 1.58

24.0 75.2 11.16 1.50

26.0 78.8 10.34 1.42

28.0 82.4 9.59 1.3430.0 86.0 8.90 1.27

32.0 89.6 8.26 1.20

34.0 93.2 7.68 1.1436.0 96.8 7.15 1.08

Voltage (V)*Resistence (k )Temperature

REMARKS:1. The sensor resistance has a variation of + 5%2. Sensor resistance measurement must be done after 3 minutes since the sensor has been exposed to that temperature,

this is necessary for getting a reliable value.3. For checking voltage, make sure of connection for PCB connector.

Sensors “R” y “D”

32

°C °F-26.0 -14.8 104.60 4.56-24.0 -11.2 94.30 4.52

-22.0 -7.6 85.14 4.47

-20.0 -4.0 76.96 4.43-18.0 -0.4 69.66 4.37

-16.0 3.2 63.13 4.32

-14.0 6.8 57.29 4.26

-12.0 10.4 52.05 4.19-10.0 14.0 47.34 4.13

-8.0 17.6 43.12 4.06

-6.0 21.2 39.31 3.99-4.0 24.8 35.88 3.91

-2.0 28.4 32.79 3.83

0.0 32.0 30.00 3.752.0 35.6 27.47 3.67

4.0 39.2 25.19 3.58

6.0 42.8 23.12 3.49

8.0 46.4 21.24 3.4010.0 50.0 19.53 3.31

12.0 53.6 17.98 3.21

14.0 57.2 16.57 3.1216.0 60.8 15.28 3.02

18.0 64.4 14.10 2.93

20.0 68.0 13.03 2.8322.0 71.6 12.05 2.73

24.0 75.2 11.16 2.64

26.0 78.8 10.34 2.54

28.0 82.4 9.59 2.4530.0 86.0 8.90 2.35

32.0 89.6 8.26 2.26

34.0 93.2 7.68 2.1736.0 96.8 7.15 2.08

TemperatureResistence (k ) Voltage (V)*

7-2 RESISTENCE, VOLTAGE & SPECIFIC TEMPERATURE FOR SENSORS

Sensors “RT” (Ambien Temperature)

33

REMARKS:1. The sensor resistance has a variation of + 5%2. Sensor resistance measurement must be done after 3 minutes since the sensor has been exposed to that temperature,

this is necessary for getting a reliable value.3. For checking voltage, make sure of connection for PCB connector.

7-3 RESISTANCE (HEATERS) VALUES CHART

Defrost resistance value.

“DEF

Diagram

Capacity Voltage Resistance Value�16 cu ft

�

34

Capacity Voltage Resistance Value16 cu ft

Isolation resistance value.Defrost resistance

Isolation resistance

Capacity Voltage Resistance Value16 cu ft �

Check resistance between blue and brown connectors for CON2.

Defrost resistance values.Check resistance between red connectors.

Defrostresistance

IsolationResistance

DefrostResistance

Relay

7-4 HOW TO REMOVE TERMINAL POSITION ASSURANCE (TPA)

REMARK: After finishing with the measures, TPA must be assembled.

<DC TPA>

Lift up T.P.A.Press right hook. Press left hook.

35

1 2 3

7-5 COMPONENTS LOCALIZATION ON PCB

P/N EBR808608

8. TROUBLESHOOTING FOR PCB8-1. CONTENTS

- Refrigerator Sensor Error- Defrost Sensor Error- Ambient Temperature Sensor Error- Defrost Operation Failure- Freezer Fan Error.- Condenser Fan Error- LED is not working (Multiduct)- Poor cooling on refrigerator compartment- Excesive cooling on refrigerator section

Troubleshooting

36

- Refrigerator Sensor Error

1

No Checking Result and SVC countermeasure

Result SVC Support

Connected Go to step 2.

Loose

2

0 Short Go to step 3.

OFF Open

Other Normal

3

Check if there’s a connector loose on CON8.

0 Short

OFF Open

Otro Valor Normal

37

Connect firmly and check again. Is there a problem?Yes: Go to step 2.No: Explain to customer.

Unplugged the refrigerator and all the PCBconnectors, check the resistance betweenwhite wires for CON8.

Check temperature and resistance(see chart of section 7-2).Go to step 4.

Change harness from multi duct,if it’s necessary.

Result SVC Support

Result SVC Support

1. Check temperature and resistance(see chart of section 7-2).2. Place multi duct in its original position.3. Go to step 4.

Remove multi duct and check the resistancebetween white wires of connector.

Image represents erroron display

- Refrigerator Sensor Error

4


5

Check the voltage between white wires (theseare connected to PCB) for CON8.

0 Short

OFF Open

Other value Normal

Check the voltage between white wires(sensor wires) for CON8.

0V Out ofControl Replace (PCB)

5V

Other valuebetween0V & 5V

Normal

38

1. Check temperature and resistance(see chart of section 7-2).2. Go to step 5.

Result SVC Support

Result SVC Support

Replace the product.

1. Check temperature and resistance(see chart of section 7-2).2. Explain to customer about looseand dirty connectors.

- Defrost Sensor Error

1

2

3


39

In the freezer compartment remove the ventilator and check the resistance points(orange wires).


Result SVC Support


LooseConnect firmly and check again. Is there a problem?Yes: Go to step 2.No: Explain to customer.

0 Short Go to step 3.

OFF Open

Other Normal 1. Check temperature and resistance

(see chart of section 7-2).2. Go to step 4.

Result SVC Support

0 Short

OFF Open

Other Normal

Change sensor harness.

Result SVC Support

1. Check temperature and resistance(see chart of section 7-2).2. Place multi duct in its original position.3. Go to step 4.

Unplugged the refrigerator and all the PCBconnectors, check the resistance betweenorange wires for CON8.


- Defrost Sensor Error

4

5

40

Check the voltage between orange wires (these are connected to PCB) for CON8.


0 Short

OFF Open

Other value Normal 1. Check temperature and resistance


Result SVC Support

Replace the product.

Check the voltage between orange wires(sensor wires) for CON8.


5V


Normal

Result SVC Support


- Ambient Temperature Sensor Error

1

2

3

0 Short Replace the product

OFF Open Change sensor

41

1. Remove the cover from the upper hinge.2. Cut the sensor and check the resistance

value of the cabinet side.


Check if there’s a connector loose on CON8.Result SVC Support


LooseConnect firmly and check again. Is there a problem?Yes: Go to step 2.No: Explain to customer.

Unplugged the refrigerator and all the PCBconnectors, check the resistance betweengray wires for CON8. 0 Short Go to step 3.

OFF Open

Other Normal 1. Check temperature and resistance


Result SVC Support

Go to step 4.

Result SVC Support

Image represents erroron display (when you press the button for 1 second)

- Ambient Temperature Sensor Error

4

5

6

Error Different Proceed according to the errorshown on display

YesNormalSame

Explain to customer.Got to step 6.

42

1. Remove the sensor cover.2. Cut the sensor and peel off the terminals.3. Make short circuit in the terminals from

the cabinet side.4. Measure the resistance for CON8.

1. Reconnect CON8.2. Reset power in the refrigerator.3. Check that there’s no error on display.

Check the voltage between gray wires(sensor wires) for CON8.


0 Short Change sensor

OFF Open Replace the product

Result SVC Support

Result SVC Support


5V


Normal

Result SVC Support


- Defrost Operation Failure

1

2

3

Part Result SVC Support

DefrostResistance

See resistancechart in

section 7-2

DefrostSensor

0Ω

OFF

Otro

DefrostController

0Ω Go to step 3.

OFF

Result SVC Support

115 V Go to step 5

0 V Replace PCB

4 Check the voltage between brown and bluewires for CON2 (PIN3 & PIN9).

43

Neutral F-DEF HTR

For any anormality, check the sealing door.

Unplug the product, remove the fan coverand check the resistance in the defrost control part.

Connect the refrigerator, remove the PCB cover and start Test Mode 2 (press twice thebutton on PCB).

Resistance is the same asthe value from the chart?

Yes: Keep checking the defrost sensor.

No: Change the defrost resistance.

1. Refer to Defrost Sensorprocedure.

2. Keep checking the fuse.

Change defrost controller.

NOTE: Defrost sensor must be cold for start this mode (less than 13 °C).

The next sequence confirms that you started Test Mode 2:

Test Mode 2

)


DefrostSensor

DefrostController

DefrostResistance


- Defrost Operation Failure

4

Result SVC Support

0 V Explain to customer

115 V Replace PCB

5 Check the voltage between brown and bluewires for CON2 (PIN3 & PIN9).

44

Neutral F-DEF HTR

Finish Test Mode 2 (press once more thebutton on PCB).


- Freezer Fan Error

45

Symptom Check Point

1. Freezer Fan Error 1. Check the air flow2. Check the fan motor3. Check the PCB Fan motor voltage

TEST MODE 1 Voltage [V]

CON54th pin ~ 5th pin

CON102 CON2

CON CON8

CON201

CON1

8V~13V

CON55th pin ~ 6th pin

Not 0V, 5V

Fan Motor

CON5

CON6

CON5


- Freezer Fan Error

1

46

Reset the unit and start Test Mode 1 (press once the button on PCB).

Check the Fan motor voltage. Is fan motor voltage 8V~13V?

TEST MODE 1 Voltage [V]CON54th pin ~ 5th pin 8V~13V

TEST MODE 1 Voltage [V]CON55th pin ~ 6th pin

Not 0V, 5V

CON5

Open the freezer door and check the air flow. Does it feelwindy?

Result SVC Support

Yes Go to step 3

No Go to step 2

Check the fan motor. Rotate fan using hand. Does it feel sticky?

Result SVC Support

Yes Change the motor

2

No Go to step 3

3

Result SVC Support

Yes Go to step 4

No Replace PCB

Check the Fan motor voltage. Is fan feedbackvoltage 0V, 5V?

4

Result SVC Support


No Explain to customer


CON5

- Condenser Fan Error

47

Symptom Check Point

1. Condenser Fan Error 1. Check the air flow2. Check the fan motor and connector3. Check the PCB Fan motor voltage

TEST MODE 1 Voltage [V]

CON51st pin ~ 2nd pin

8V~13V

CON52nd pin ~ 3th pin

Not 0V, 5V

Fan Motor

CON5


CON102 CON2

CON CON8

CON201

CON1

CON6

CON5

- Condenser Fan Error

1

48

Reset the unit and start Test Mode 1 (press once the button on PCB).

Check the Fan motor voltage. Is fan motor voltage 8V~13V?

TEST MODE 1 Voltage [V]CON51th pin ~ 2nd pin 8V~13V

TEST MODE 1 Voltage [V]CON52ndpin ~ 3th pin

Not 0V, 5V

CON5

Check the fanrotating. Does it fanrotate?

Result SVC Support

Yes Go to step 3

No Go to step 2

Check the Fan motor. Rotate fan using hand.Does it feel sticky?

Result SVC Support


2

No Go to step 3

3

Result SVC Support

Yes Go to step 4

No Replace PCB

Check the Fan motor voltage. Is fan feedbackvoltage 0V, 5V?

4

Result SVC Support


No Explain to customer


Fan Motor

Fan Motor

CON5

- LED is not working (Multiduct)

1

2

3

Damaged wires, dust,dirt, lack of T.P.A.

Normal appearance andcorrect connection Go to step 2

Forced movement Normal Change door switch

Free movement No normal Go to step 3

Result SVC Support

Firmly connected Go to step 4

Loose

49

* Yes: Replace the door magnetic switch.

Disassembly multi duct and check that allthe wires are firmly connected to LED, the terminals must be secured with a T.P.A. and the LED wire must be free of any damage.

Open the refrigerator door. Check visually the door magnetic switch. Are the magneticswitch wires loose?

Disconnect the magnetic switch and confirmwhether there is continuity between theterminals. Is there continuity?

DoorSwitch

Resistance [

Doormagnetic

switch

Normal

0

InfinitePlace the

magnet closeto magnetic

switch

* Yes: Replace the door magnetic switch.

Replace LED lamp. Is therea problem?Yes: Go to step 2.No: Explain to customer.

Connect firmly, then check again (connectand disconnect. Is there a problem?Yes: Go to step 4.No: Explain to customer.

Result SVC Support


Result SVC Support


4

5

6

11~12 VDC Normal Go to step 5

0 V Replace PCB

50

CON8 Voltage [ V ]

Refrigerator door switch7th~8th Open 5V

NOTE: For detect continuity, the magnet and switch must be aligned.

*No: Replace the door magnetic switch.

CON8

CON8

Go to step 6 V5

No 5V Replace PCB

CON8 Voltage [ V ]

Closed 5V

Resultado Respuesta de SVC

Go to step 7V0

No 0V Replace PCB


Result SVC Support

No normal

Disconnect the magnetic switch and confirmwhether there is continuity between theterminals. When you close magnet to themagnetic switch, is there continuity?

Result SVC SupportConect the magnetic switch and check on the PCB, el voltage for CON8 (pin 7th~8th). While the door is open, is the voltage valueof 5V?

Check the voltage of CON8 (7th~8th). While the door is closed, is the voltagevalue of 0V?

Refrigerator door switch7th~8th


7

51

8

9

10

Check the R-LED when the door is open. Is the R-LED turn on?

CON101

Yes Explain to customer

No Go to step 8

CON101 Voltage [ V ]

1er ~ 3ro

1er ~ 3ro

Door

OpenClosed

12V0V

Yes Change LED from refrigerator

No Go to step 9

CON8

Go to step 10Yes

No Replace PCB

CON8 Voltage [ V ]

Refrigerador LED lamp(11th~12th)

Closed 0V

CON8 Voltage [ V ]

Closed 12V

Yes Explain to customer. Product is normal

No Replace PCB

CON8


Result SVC Support

Result SVC Support

Result SVC Support

Result SVC Support

Check the R-LED. When the door is open, the voltage value for R-LED is 12 V?

Check the voltage of door switch PCB. Whilethe door is closed, is the voltage value of 0Vfor CON8 (11th~12th)?

Check the voltage of door switch PCB. While the door is open, is the voltage value between 10 & 12V for CON8 (11th~12th)?

Refrigerador LED lamp(11th~12th)

- Poor cooling on refrigerator compartment

1

2


Loose

0 Short Refer to “Refrigerator Sensor Error”sectionOFF Open

OtherValue

Normal


Air Flow Normal Go to step 5

No air flow No normal Go to step 6

3

4

52



1. Check temperature and resistance (seechart of section 7-2).

2. Check the box corresponding to thetemperature of the resistance by the value (see “R” in the sensor graphic).

3. Check if the equivalent temperaturematches with the real temperature ofthe compartment.

Go to step 3.

1. Connect the refrigerator. 2. Remove the PCB cover and start Test

Mode 1 (press once the button on PCB).

1. Open the freezer door.2. Press manually the door switch.3. Check the air flow.


Result SVC Support

Result SVC Support

Result SVC Support

- Poor cooling on refrigerator compartment

5

6

Freezer Fan

1 2

3 4

Forced Movement

Free Movement

53

1. Open refrigerator door.2. Press manually the door switch, wait for

10 seconds.3. Check the air flow.

1. Turn off the refrigerator.2. Remove grill fan and check manually the

freezer fan motor movement, feel the rotation condition, then proceed. 1. Replace freezer fan motor.

1. Check compressor performance (refer to Troubleshooting section).


Result SVC Support

Result SVC Support

Normal Go to step 7Air Flow

No Normal Go to step 6No Air Flow

- Excesive cooling on refrigerator section

1

2

3

4

0

OFF


54


Result SVC Support

Result SVC Support


Loose


Result SVC Support


1. Connect the refrigerator. 2. Remove the PCB cover and start Test

Mode 1 (press once the button on PCB).

1. Open the freezer door.2. Press manually the door switch.3. Check the air flow.

Air Flow Normal Go to step 5

No air flow No normal Replace PCB

Refer to “Refrigerator Sensor Error”section.

Short

Open

OtherValue

Normal

1. Check temperature and resistance (seechart of section 7-2).

2. Check the box corresponding to thetemperature of the resistance by the value (see “R” in the sensor graphic).

3. Check if the equivalent temperaturematches with the real temperature ofthe compartment.

Go to step 3.

- Excesive cooling on refrigerator section

5

55

Reset power in the refrigerator.Remove the PCB cover and start TestMode 2 (press twice the button on PCB).

1. Open the refrigerator door.2. Press manually the door switch.3. Check the air flow.

Replace PCB.

Check compressorperformance (refer to Troubleshooting section).


Result SVC Support

Air Flow No normal

No Air Flow Normal

304A

411A

406B

315A

282B

281B

B01

323B

329A

420A

319A315B

315B

315C

318A

314A307A

312A

317A

310A

281A

319C

309A

103A

105A

407A

301A

418A

103A

B01

501A

S38

501F

106B

104C

901A

401A

303B

303BS02

106B

283B

B03

CASE PARTSCAUTION: Use the part number to order part, not the position number.

9. EXPLODED VIEW#EV#

412D

120A

120D

120B

120C

409A

158A

501G

154B

149A

149C

149C

151A

330B

405C

404A

405A

900D

329C

S10

REFRIGER ATOR AND FREEZER PARTSCAUTION: Use the part number to order part, not the position number.

#EV#

332A

203A201A

200A

212G

233A231A

230A

210B

210A

212C

212A

244C

243A

243B

244A

241B

235A

DOOR PARTSCAUTION: Use the part number to order part, not the position number.

#EV#

205B

205A

205B

241A

241C

MFL49380062 December, 2015

REFRIGERATOR SERVICE MANUAL - Encompass · caution: please read the safety precautions of this...

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Transcript of REFRIGERATOR SERVICE MANUAL - Encompass · caution: please read the safety precautions of this...