Installation, Start-Up and Service Instructions · 2020. 3. 17. · 4 f l k e d view side view om...

1

CONTENTS Page

51302618912-C 0706Cooling ModelBNC009BNC012BNC018

Heat PumpBNQ009BNQ012BNQ018

SAFETY CONSIDERATIONS ................................ 1GENERAL...........................................................1-5INSTALLATION ................................................6-17Indoor Unit Installation ........................................ 6Outdoor Unit Installation ..................................... 8Power Supply ....................................................... 9Leak Test ............................................................... 9Wiring Diagrams............................................ 11-16START-UP ........................................................... 17System Checks................................................... 17CARE AND MAINTENANCE ............................... 17Outdoor Units ..................................................... 17Indoor Units ........................................................ 17To Clean the Indoor Unit Front Panel ............... 17To Clean Indoor Coil .......................................... 17Air Filters for Indoor Units ................................ 17SERVICE ............................................................. 17TROUBLESHOOTING....................................18-21

SAFETY CONSIDERATIONSInstalling, starting up, and servicing air-conditioning equip-

ment can be hazardous due to system pressures, electrical compo-nents, and equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics shouldinstall, start-up, and service this equipment.

Untrained personnel can perform basic maintenance func-tions such as cleaning coils. All other operations should be per-formed by trained service personnel.

When working on the equipment, observe precautions in theliterature and on tags, stickers, and labels attached to the equip-ment.

Follow all safety codes. Wear safety glasses and work gloves.Keep quenching cloth and fire extinguisher nearby when brazing.Use care in handling, rigging, and setting bulky equipment.

Before installing or servicing system, always turn off main powerto system and install lockout tag on disconnect. There may bemore than one disconnect switch. Electrical shock can causepersonal injury.

GENERALThese instructions cover the installation, start-up and servic-

ing of 38BNC/BNQ outdoor and 40BNC/BNQ indoor units cool-ing only and heat pump duct free systems. See Table 1 for partsincluded. See Tables 2 and 3 for Physical Data.

System RequirementsIMPORTANT: The Indoor unit & the inter units cablevoltage is 30 VDC.

IMPORTANT: Each refrigerant line must be insulatedSeparately. See line sizing requirements in tabel 2.

• Consult local building codes and National Electrical Code(NEC, U.S.A.) for special installation requirements.

Max. cable length. Total voltage drop should not exceed 1V.Therefore max. length:

For #18 AWG 24.3 Feet (7.4 m)

For #16 AWG 37.7 Feet (11.5 m)

For #14 AWG 50.0 Feet (18 m)

• Use only type "G" or "C" fuses. Use single length powercable without extension. Allow sufficient space for airflowclearance on condens-ing units for wiring, refrigerant piping,and servicing unit. See Fig. 1 and 2 for minimum requireddistances between unit and walls or ceilings.

• Indoor and outdoor units should be installed at aMinimum length of 10 ft. apart.Maximum line length of 50 ft. andvertical separation of 30 ft.

• Do not install indoor units near a direct source of heat such asdirect sunlight, steam or flame.

Do not bury more than 36 in. of refrigerant pipe in the ground. Ifany section of pipe is buried, there must be a 6 in. vertical rise tothe valve connections on the outdoor units. If more than the rec-ommended length is buried, refrigerant may migrate to the coolerburied section during extended periods of system shutdown. Thiscauses refriger-ant slugging and could possibly damage the com-pressor at start-up.

WARNING

Pg 1

CAUTION

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without inc. Printed in Israel

Fig. 1B —38BNC/BNQ 012, 018 Outdoor Unit Clearances

Fig. 1A — 38BNC/BNQ 009 Outdoor Unit Clearances

LEFT (min.)6" (0.15m)

REAR (min.)6" (0.15m)

RIGHT (min.)2" (0.6m)FRONT (min.)2" (0.6m)

TOP (min.)2" (0.6m)

LEFT (min.)6" (0.15m)

TOP (min.)2" (0.6m)

REAR (min.)6" (0.15m)

RIGHT (min.)2" (0.6m)

FRONT (min.)2" (0.6m)

Installation, Start-Up and Service Instructions

BNC/BNQ 009,012,018Duct Free Systems

R-22

2

START

STOP

1 2 3 SLEEP

DAILY

MODE FAN SWEEP

WIRELESS DIGITWIRELESS DIGITAL REMOTE CONTROLLER REMOTE CONTROLLER

WIRELESS DIGITAL REMOTE CONTROLLER REMOTE CONTROLLER

Table 1 — Parts List — High Wall Units

ITEM QTY DIAGRAM

Mounting Bracket 1

40BNC/BNQ 009, 012 or 40BNC/BNQ 018

Long Screws 8

Outdoor Sensor

Connecting Cable 1

(Available for HEAT PUMP ONLY)

Absorption Cushions 4

Electric Terminals 8

Remote Controller 1 Mounting Bracket

Mounting Bracket with 2 screws

Remote Controller 1

and Batteries

Insulation for indoor Fittings 1

Owner's Manual 1

1

Wall mounted Receiver RTX (OPTIONAL)

(Not included)

3

Table 2 - Physical Data - Cooling Only

LEGEND

SEER — Seasonal Energy Efficiency Ratio

*Units are shipped with a factory charge based on 25 ft of refrigerant lines.

Table 3 - Physical Data - Heat Pump

LEGEND

HSPF - Heating Seasonal Performance FactorSEER - Seasonal Energy Efficiency Ratio*Units are shipped with a factory charge based on 25 ft of refrigerant lines.NOTE: Standard Ambient Operating Limitations - 55 °F to 125 °F (12.7 °C to 51.6 °C).

Indoor Unit 40BNC009 40BNC012 40BNC018

Cooling Capacity Btu/h 9,000 11,600 19,000

Efficiency Cooling SEER SEER 13 13 13

System Chargh Lb. 2.7 3.1 4.1

MOISTURE REMOVAL pt/hr 2.6 4.5 5.3

Air Flow (Turbo/High/Low) cfm 350 / 280 / 220 370 / 280 / 220 670 / 570 / 460

Dimensions (LxHxD) in 32.08 x 10.23 x 7.28 32.08 x 10.23 x 7.28 42.12 x 11.41 x 7.48

REFRIGERANT TYPE TYPE

Net Weight Lb. 19 19 27.5

Outdoor Unit 38BNC009 38BNC012 38BNC018

TUBE CONNECTIONSVertical lift/Vertical Drop/Max. Length

Feet

NOMINAL LINE SIZINGMixed Phase….Suction

in 1/4"-1/2" 1/4"-1/2" 3/8" - 5/8"

COMPRESSOR TYPE Panasonic-2R13S126A6F Panasonic-2P17SR126B1A Panasonic-2K25S236AHA


Net Weight Lb. 73 114 136

METERING TYPEPiston (Accurator)

Accurator is non-serviceable

30 / 30 / 50

R-22

Indoor Unit 40BNQ009 40BNQ012 40BNQ018

Cooling Capacity Btu/h 9,000 11,600 19,000

Efficiency Cooling SEER SEER 13 13 13

Heating Capacity Btu/h 8,600 11,800 18,300

HSPFHeating Seasonal Performance Factor

HSPF 7.7 7.7 7.7

System Chargh Lb. 2.7 3.1 4.1

MOISTURE REMOVAL pt/hr 2.6 4.5 5.3

cfm 350 / 280 / 220 370 / 280 / 220 670 / 570 / 460

m3/h 594 / 475 / 373 628 / 475 / 373 1138 / 968 / 781

in 32.08 x 10.23 x 7.28 32.08 x 10.23 x 7.28 42.12 x 11.41 x 7.48

mm 815 x 260 x 185 815 x 260 x 185 1,070 x 290 x 190

REFRIGERANT TYPE

Net Weight Lb. 19 19 27.5

Outdoor Unit 38BNQ009 38BNQ012 38BNQ018

TUBE CONNECTIONSVertical lift/Vertical Drop/Max. Length

Feet

NOMINAL LINE SIZINGMixed Phase….Suction

in 1/4"-1/2" 1/4"-1/2" 3/8" - 5/8"

COMPRESSOR TYPE Panasonic-2R13S126A6F Panasonic-2P17SR126B1A Panasonic-2K25S236AHA


Net Weight Lb. 73 114 136

METERING TYPEPiston (Accurator)

Accurator is non-serviceable

Dimensions (LxHxD)

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2.8

Fig. 2 — Indoor Unit Clearances

INSTALLATIONPlan the installation carefully to avoid component failures

and make installation easier.

Indoor Unit InstallationREFRIGERANT LINE ROUTING — The refrigerant lines maybe routed in any of the four directions shown in Fig. 3.

INSTALL THE MOUNTING BRACKET1. Carefully remove the mounting bracket, which is

connected to the back of the indoor unit's base with screws.

2. Position the mounting bracket on the wall and level itusing a spirit level (see Fig. 2 for minimum requiredclearance distances).

3. Mark the four drilling holes on the wall, as they appear inFig. 4.

4. Drill the holes, insert the wall plugs and use four longscrews to attach the mounting bracket to the wall.

5. Check that the bracket is leveled and securely fastened tothe wall.

DRILL A HOLE IN THE WALL FOR DRAINAGEAND INTER-UNIT CONNECTIONS-To make the connections between the indoor and outdoor units,drill a (09, 12) 2.5-in, (18) 3-in. hole through the wall for therefrigerant lines, drainage hose and control cable passage asshown in Fig. 5.1. Mark the center of the hole to be drilled according to the

refrigerant line routing used and dimensions shown in Fig.4.

2. Make sure to drill outwards and downwards, so that theopening in the outside wall is at least 1/2-in. lower than theopening on the inside.

3. Make sure the drainage hose is at the bottom side of thehole.

4 . If refrigerant line route no. 1,2 or 4 are used, use a smallsaw blade to carefully remove the corresponding plasticcovering on the side panel.

5. Run the outdoor sensor cable, electrical cable, refrigerantlines, and drainage tube through the hole.

6. Fill the remaining wall hole gap with an appropriatesealant material.

Fig. 3 — Refrigerant Lines

Fig. 4 — Mounting Bracket 38BNC/BNQ 009, 012

Fig. 4 — Mounting Bracket 38BNC/BNQ 018

Fig. 5 — Drill Holes

7

CAUTION

REASSEMBLE1. Connect the display connector to the display panel printed

circuit board.2. Put the control box cover and grille frame back on using the

appropriate screws (Steps 3 and 4 of Wire the Indoor Unitsection). Put the grille insert back on.

MAKE DRAINAGE CONNECTIONS1. Connect the unattached end of the drainage tube to the

drainage hose outlet.

2. Seal the drainage connection to prevent leakage.

3. Make sure there are no kinks, "U" bends or flattened sectionsin the tube.

4. Check that the drainage functions properly. Fill the pan belowthe unit's coil with water and observe that it freely drains out.

5. Make sure the drainage hose is at the bottom side of the wallthrough-hole (see Fig. 5).

FILTER

IRRECEIVER

POWER/AIRCOND TIMER

FUSEAUTO/OFFFILTER RESET

SERVICE LED

POWER/AIRCOND TIMER

FUSEAUTO/OFFFILTER RESET

SERVICE LED

AUTO/OFFFILTER RESET

SERVICE LED

1

2

HEAT PUMPModel-012 DIP Switches location

(on the Control Box side)

HEAT PUMPModels-009,018 DIP Switches location


COOLING ONLYModel-012 DIP Switches location


COOLING ONLYModels-009,018 DIP Switches location


Standard Dip Switchesstatus from the factory

Inter unitterminal block

30VDC

DisplayConnection

TH1

TH2TH3

(Heat Pump Only)

Inter unit cable clamp

WIRE THE INDOOR UNIT1. Strip the cables back 1/4 inch.2. Remove the unit's front panel by lifting the lower part and

pulling it gently outward and upward. See Fig. 6.3. Remove the two screws from the control box cover and take

off the cover. See Fig. 7. Save the screws to reassemble.

NOTE: In general wiring the indoor unit does not require theremoval of the grille frame but in case of need do as follow:4. Remove the two screws from the air discharge opening.

Save the screws to reassemble. See Fig. 7A.• Pull downwards and outwardston the bottom of the grille

and gently raise the frame of the top of the unit.• Once all covers are off, mount the unit onto the wall

mounting bracket. See Fig. 8 .

NOTE: Leave covers off until after the Making Drainage Con-nections section.• Route the interconnecting unit's electric cable and the

outdoor sensor cable towards the lower right hand corner ofthe indoor unit.

• Make sure that the wires are connected in accordance withthe wiring diagram on the inside of the unit front cover orwithin this instruction manual.

• Secure the control cables to the strain relief.• For heat pump systems only, connect the outdoor sensor

TH3 to its mating black terminal. See Fig. 9.

Make sure that all wires and screws are firmly fastened. Loosewires or connections can cause damage and present a firehazard.

Fig. 6 — Remove Grille Insert

Fig. 7 — Remove Control Cover

Fig. 8 — Indoor Unit Mounting

Mount the indoor unit on the mounting bracket

Gently push with the arrow direction

Fig. 7A - Remove the screws from the airdischarge opening.

Fig. 9 — Outdoor Sensor Connection

8

ATTACH THE REMOTE CONTROLLERMOUNTING BRACKET1. Use the two screws supplied with the controller to attach the

Mounting Bracket to the wall in the location selected by thecustomer (see Fig. 10 ).

2. Install batteries in the remote control.

3. Place remote control into remote control Mounting Bracket.

4. For remote control operation, refer to the unit Owner'sManual.

Outdoor Unit InstallationNOTE: The outdoor unit must be installed on a solid surface(mounting base).1. Place the rubber absorption cushions (supplied with the

outdoor unit) under the unit's feets to prevent vibrations.

2. Fasten the outdoor unit legs to the mounting base, as shownin Fig. 12. The cushion goes between the legs and themounting base.

3. Be sure that the unit is leveled.

MAKE REFRIGERANT PIPING CONNECTIONS (OUTDOORUNIT) — To connect the refrigerant lines:

Use only "L" type sealed, dehydrated copper refrigerant tub-ing. No other type of tubing may be used. Use of other types oftubing will void the manufacturer's warranty.

Do not open service valves or remove protective caps fromtubing ends until all the connections are made.

Bend tubing with special bending tools to avoid the forma-tion of sharp bends. Take care to avoid kinks or flattening of thetubing.

Keep the tubing free of dirt, sand, moisture, and other con-taminants to avoid damaging the refrigerant system.

Avoid sags in the suction line to prevent the formation of oiltraps.

Insulate each tube with 3/8-in. walled thermal pipe insu-lation. Inserting the tubing into the insulation before makingthe connections will save time and improve installation The suc-tion and mixed-phase lines should never come in direct contact.

START

STOP

1 2 3 SLEEP

DAILY

MODE FAN SWEEP



REMOTE CONTROL

REMOTE CONTROLMOUNTING BRACKET

Fig. 10 — Attach Mounting Bracket to the Wall

Fig. 11 —Wall Mounted Unit - RTX

(OPTIONAL)

Fig. 12 — Legs Mounting Base and WiringOutdoor Units Models: 38BNC/BNQ 012, 018

9

FLARING AND CONNECTING REFRIGERANT LINES

1. Remove the protective cap from the flare fitting.

2. Remove the protective cap from the tubing and cut to therequired length. Be sure that the cut is perpendicular andclean, without burrs.

3. Slip the flare nut on the tubing and flare the tube end usingstandard flaring tools.

4. Tighten the nut until resistance is met. Mark the nut and thefitting. Using a suitable wrench tighten an additional 1/4turn. Use the following specified torque, according toconnection size:

Mixed-Phase line: Suction line:

1/4 in.-(12.3 ft-lb.) 1/2 in.-(36 ft-lb.)

3/8 in.-(29 ft-lb.) 5/8 in.-(47 ft-lb.)

NOTE: The service valves on the outdoor unit must remain closeduntil all 4 connections have been made.

EVACUATE TUBING AND CHARGE THE SYSTEM — Whenall the fittings are connected, air must be expelled, then refriger-ant charge must be checked and adjusted. Follow the steps below.1. Open the service port cap on the suction line valve (large

valve).

2. Connect the vacuum pump to the service port via the pressuregage and evacuate to 500 microns to eliminate contaminationand moisture.

3. Disconnect the vacuum pump. Unit should maintain 500microns for 5 minutes.

4. Remove the service port caps from the mixed-phase valveand suction line valve

5. Open the mixed-phase valve (small valve) with an Allenwrench.

6. Open the suction line valve (large valve) with an Allenwrench.

7. The outdoor unit is supplied with sufficient R-22 refriger-ant for up to 25 ft. lineset length. Add 0.9 oz. of refriger-ant for each additional 3 ft. of tubing length.

8. Make sure that the valves are properly opened. Be careful notto open them more than required as this may damage thethread.

9. Replace the service port cap. Using refrigerant oil, lubricatethe cap beam and hand tighten until resistance is met. Use asuitable wrench to tighten the cap by an additional 1/2 turn.

Power Supply — See Tables 4 and 5 for electrical data and Fig.13-18 for system wiring diagrams.

Leak Test — Leak test all fittings with appropriate test equip-ment.

OFF ON TIMER

IR RECEIVER FILTER

PLASTIC CONTROLCOVER

SERVICE LED

Operation push button forautomatic operation (23°C/73°F),turning the a/c OFF, cancelingthe malfunction indication,and resetting the filter LED.

Fig. 12A — Legs Mounting Base and WiringOutdoor Units

Model 38BNC/BNQ009

Fig. 12B — Indoor unit LED’s and Wiring

INDOOR UNIT 009, 012 ,018

Both refrigerant linesneed to be insulated separatly

10

Table 4 — Electrical Data, Indoor Units — 30VDC

UNIT VOLTAGE MCA* MOCP* FULL LOAD FAN MOTOR COMPRESSOR COMPRESSOR LOCKEDAMPS AMPS AMPS ROTOR AMPS

40BNC

40BNQ

LEGENDMCA — Minimum Circuit AmpsMOCP — Maximum Overcurrent Protection*If indoor unit is powered from outdoor terminal block, the MOCP forthe outdoor unit is for both sectionsNOTE: Specifications and performance data are subject to change without notice.

Table 5 — Electrical Data, Outdoor Units — 115, 208/230-1-60

UNIT VOLTAGE MCA* MOCP* FULL LOAD FAN MOTOR COMPRESSOR COMPRESSOR LOCKEDAMPS AMPS AMPS ROTOR AMPS

38BNC

38BNQ

LEGENDMCA — Minimum Circuit AmpsMOCP — Maximum Overcurrent Protection*If indoor unit is powered from outdoor terminal block, the MOCPfor the outdoor unit is for both sectionsNOTE: Specifications and performance data are subject to change without notice.

009 115VAC 9.0 15 9.7 0.90 6.1 42

012 115VAC 11.6 20 13.7 1.00 7.6 58

018 208-230VAC 10.7 20 10.0 0.88 6.5 42

009 30VDC N/A N/A 1.8 1.1 N/A N/A

012 30VDC N/A N/A 1.8 1.5 N/A N/A

018 30VDC N/A N/A 2.4 0.84 N/A N/A

3095897

3095897

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START-UPSystem Checks1. Conceal the tubing where possible.

2. Make sure that the drainage tube slopes downward along itsentire length.

3. Ensure all tubing and connections are properly insulated.

4. Fasten tubes to the outside wall.

5. Seal the hole through which the cables and tubing pass.

6. Connect the air conditioner to the power source and turn iton.

7. Check all air conditioner operating modes. Refer to Owner'sManual for operating details.

INDOOR UNIT1. Do all the remote controller buttons function properly?

2. Do the display panel lights work properly?

3. Does the air deflection louver function properly?

4. Does the drainage work?

OUTDOOR UNIT1. Are there unusual noises or vibrations during operation?

2. Is noise, drain water or airflow from the unit likely to disturbthe neighbors?

3. Are there any gas leaks?

EXPLAIN THE FOLLOWING ITEMS TO THE CUSTOMER,WITH THE AID OF THE OWNER'S MANUAL:1. How to turn the air conditioner on and off; selecting cooling,

heating and other operating modes; setting a desired tempera-ture; setting the timer to automatically start and stop airconditioner operation; and the other features of the remotecontroller and display panel.

2. How to remove and clean the air filter.

3. How to set the air deflection louver.

4. Explain care and maintenance.

5. Present the Owner's Manual and installation instructions tothe customer.

CARE AND MAINTENANCEThe following may be performed by the equipment owner.

Outdoor Units

Before performing recommended maintenance, be sure unit mainpower switch is turned off. Failure to do so may result in electricshock or injury from rotating fan blade.

CLEANING COILS — Coil should be washed out with wa-ter or blown out with compressed air. Clean coil annually or asrequired by location and outdoor air conditions. Inspect coil monthlyand clean as required. Fins are not continuous through coil sec-tions. Dirt and debris may pass through first section, become trappedbetween the row of fins and restrict outdoor unit airflow. Use aflashlight to determine if dirt or debris has collected between coilsections. Clean coil as follows:

1. Turn off unit power and install lockout tag.2. Using a garden hose or other suitable equipment, flush coil

from the outside to remove dirt. Be sure to flush all dirt anddebris from drain holes in base of unit. Fan motors arewaterproof.

WARNING

Indoor Units

To avoid the possibility of electric shock, before performing anycleaning and maintenance operations, always turn off power tothe system by pressing the ON/OFF button on the remote con-trol and turn off the separate disconnect switch located near theunit.If the indoor unit is on a separate switch, be sure to turn thisdisconnect off as well.

Do not wash filter in water over 120°F (to avoid shrinkage). Donot expose filter to fire (to avoid fire damage). Do not exposefilter to direct sunlight. Clean filter more frequently when air isextremely dirty.

Do not attempt to clean or service components in controlbox.

To Clean the Indoor Unit Front Panel — if the front panel of theunit becomes dirty or smudged, wipe the out-side of the panel witha soft dry cloth. Use a mild liquid deter-gent and wipe off carefullywith a dry cloth.

To Clean Indoor Coil — To clean the coil, remove indoor unitfront panel and vacuum the coil fins, using care not to bend or dam-age fins.

LUBRICATION — The indoor-fan, automatic air sweep, and theoutdoor-fan motors are factory lubricated and require no oiling.

Air Filters for Indoor Units

Operating your system with dirty air filters may damage the in-door unit and, in addition, can cause reduced perfor-mance, in-termittent system operation, frost build up on the indoor coil,and blown fuses. Inspect and clean or replace the air filtersmonthly.

TO REMOVE AIR FILTERS — Open the unit's front panel bylifting the lower part and pulling it gently outward and upward.

Pull out the filters.

TO CLEAN OR REPLACE FILTERS — Filters can be vac-uumedor washed in warm water. Shake filter to remove any excess water,and replace it back. If the filter has begun to break down or is torn,replace it. Replacement filters are available through a local dealer.

SERVICEThe following should be performed by a qualified service techni-cian.

Clean Condensate Drains — Clean all drains and drain pans atthe start of each cooling season. Check the flow by pouring waterinto the drain.

Clean or Replace Drain Pan — The drain pan should only becleaned or replaced by a qualified service technician.1. Place a plastic sheet on the floor to catch any water that may

spill from the drain pan.

2. Remove the intake grille and distribution assembly.

3. Remove the condensate water in the drain pan by lettingwater drain into a 3-gallon bucket.

CAUTION

CAUTION

CAUTION

CAUTION

18

TROUBLESHOOTING (Tables 6-8, and Fig. 19)

Table 6 — Service Indicators

LAMP STATUS INDICATION CORRECTION ACTION

Check the TH1 thermistor for correct resistance.

1 Flash Faulty TH1 Sensor Check for proper connection.

Replace thermistor if necessary.

Check the TH2 thermistor for correct resistance.

2 Flashes Faulty TH2 Sensor Check for proper connection.

Replace thermistor if necessary.

Check system pressures.

3 Flashes Low Pressure Check refrigerant charge.

Check thermistors (TH1 and TH2) for correct resistance.

Check system pressures.

4 Flashes High Pressure Check refrigerant charge.

Check thermistors (TH1 and TH2) for correct resistance.

Check operating voltage.

Check electrical connections.

Check operating voltage.

Check electrical connections.

WARNINGBe sure to check for broken wires or loose cable lugsbefore troubleshooting system.

OPERATION LED.INDICATES ERROR

CLEAN FILTER INDICATORFLASHED AFTER 250 HOURSOF OPERATION

POWER LED.OFF WHEN SYSTEM ISOPERATING AND FLASHESWHEN SYSTEM IS IN ERROR.(DOES NOT INDICATE ERROR CODE)

Fig. 19— Indicator Lights

5 Flashes Low Voltage

6 Flashes High Voltage

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Ω Ω Ω

Table 7 -BNC/BNQ Thermistor TH-1, TH-2, and TH-3 Temperature to Resistance Conversion (Cont.)

21

Copyright 2006 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at anytime, specifications or designs without notice and without incurring obligations.

Printed in Israel

Table 8 — General System Troubleshooting GuideSYMPTOM PROBABLE CAUSE CORRECTIVE ACTION

Power supply from outdoor unit to indoor Check for proper connection of power at disconnect.

unit is not connected.

Power supply to unit not connected

Unit Fails to Start. (POWER LED Off).

Fuse blown (POWER LED Off). Reset circuit breaker or replace line fuse.

ON/SEND button has not been pressed. Press ON/SEND button on remote control.

Indoor unit does not receive transmitted commands. Make sure that nothing is blocking the remote control transmission to the unit.

Only Indoor Fan The selected mode is Fan Only, or Cool when Check if the remote control is in the desired mode. If not, select the

Works when Cooling heating is desired. correct mode (refer to User manual). Also note that every 15 minutes

or Heating is Desired. (maximum) the compressor will be switched minimally on for 3 minutes.

NOTE: Indoor fan runs

continuously in Temperature is set to a value which is Observe the temperature setting on the remote control. Also note that

cooling mode. too high (in Cool mode). each 15 minutes (maximum), the compressor will be switched on

minimally for 3 minutes.

Only Indoor Fan Motor Overload safety device on compressor is cut out Switch off power and try again after one hour.

and Outdoor Fan Motor due to high temperature.

are Working. No Cooling Compressor run capacitor is burnt. Replace compressor run capacitor.

and/or Heating Takes Compressor winding shorted. Replace compressor.

Place.

No Air Supply at Indoor fan motor is blocked or turns slowly. 1. Check voltage. Repair wiring if necessary.

Indoor Unit 2. Check indoor fan wheel if tight on motor shaft. Tighten if necessary.

(Compressor Operates). Indoor fan motor capacitor is burnt. Replace indoor fan motor capacitor.

Indoor fan motor winding is burnt. Replace indoor fan motor.

In Heat mode: Delayed start for indoor fan motor. Normal software delay (maximum of 20 sec).

Clogged air filters. Clean filters.

Lack of refrigerant. Ice formation on the evaporator coil. Unit must be charged (according to the nameplate) after localizing the

Low Capacity. gas leak.

Clogged air filters. Clean filters.

In Heat Mode, Only A/C operating in defrost cycle. Wait 10 minutes (maximum) until the unit resumes normal operation.

Compressor Runs.

Outdoor and Indoor

Fan Motors are Stopped.

Water Accumulates and Drain pan pipe or hose is clogged or the spout of drain Disassemble plastic drain pipe from spout of evaporator drain pan.

Overflows from pan is clogged. Flush with clean water.

Evaporator Drain Pan.

The unit is in the Auto, (emergency) mode. Push button once to cancel Auto, (emergency) mode.

Faulty remote control settings. 1. If remote control symbols respond to the commands correctly, check

the unit ID Code (Standard or Alternative). Refer to “Changing Unit

Unit Does Not Operate in ID Code" in the Owner’s Manual.

Desired Mode. 2. If Cool commands are OK, but Heat symbol is skipped on LCD, refer

to setting the remote to cooling or heat pump on the Owner’s Manual.

3. Replace remote control.

Remote control low battery. Replace remote control batteries.

The Unit Receives Common Infrared Code. Modify the Remote Control IR transmission code.

Interference from Refer to “Changing Unit ID Code" in the Owner’s Manual.

Other Remote Control

or the Remote Control

Interferes with Other

Instruments.

IMPORTANT:The units are designed to work in heat mode only down to -10°C (14°F) outdoorambient temperature.If at starting time outdoor temperature is equal or lower than -10°C (14°F) the unitwill not start and the filter led will flash five (5) times to indicate that low temperatureprotection is activated.

Installation, Start-Up and Service Instructions · 2020. 3. 17. · 4 f l k e d view side view om...

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