Mitsumi electronic PKA-A18HA4, PKA-A12HA4 MALFUNCTION-DIAGNOSIS Method by Remote Controller

Page 13

9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER

<In case of trouble during operation>

When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.

<Malfunction-diagnosis method at maintenance service>

■IR wireless remote controller

[Procedure]

 

 

1. Press the CHECK button twice.

• "CHECK" lights, and refrigerant

CHECK

CHECK display

Refrigerant address display

2. Press the temperature

address "00" blinks.

• Check that the remote controller's

display has stopped before continuing.

• Select the refrigerant address of the

ON/OFF TEMP

ON/OFF button

Temperature buttons. button

indoor unit for the self-diagnosis.

Note: Set refrigerant address using the outdoor unit’s DIP switch (SW1). (For more information, see the outdoor unit installation manual.)

CHECK button

 

FAN

AUTO STOP

MODE

VANE

AUTO START

CHECK

LOUVER

h

TEST RUN

 

min

SET

RESET CLOCK

3. Point the remote controller at the

HOURsensor on the indoor unit and button

press the HOUR button.

• If an air conditioner error occurs, the

indoor unit's sensor emits an intermit-

tent buzzer sound, the operation lamp

blinks, and the error code is

output.

(It takes 3 seconds at most for error

code to appear.)

4.Point the remote controller at the sensor on the indoor unit and press the ON/OFF button.

• The check mode is cancelled.

■Wired remote controller

 

ERROR CODE

 

TEMP.

 

 

ON/OFF



 

 

 

 

 

MENU

ON/OFF

 

FILTER

BACK

MONITOR/SET

DAY

 

CHECK TEST

PAR-21MAA

CLOCK

OPERATION

CLEAR

 

ERROR CODE

 

ERROR CODE



Turn on the power.

Press the [CHECK] button twice.

Set address with [TEMP] button if system control is used. Press the [ON/OFF] button to stop the self-check.

CHECK button

 Address

 TEMP. button  IC : Indoor unit

OC: Outdoor unit

 Check code – – – – : No trouble generated in the past. F F F F : No corresponding unit.

Unit No.

Timer ON/OFF button

<To delete check code>

Display the error code on the self-check result display screen. The address for self-check will blink when the  ON/OFF

button is pressed twice within 3 seconds.

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Contents Parts Catalog OCB483 ContentsRemote controller Optional parts Service Ref PUZ-A18/24/36NHA4Reference Manual PUZ-A18/24/36NHA4-BS PUY-A12/18/24/36NHA4Always Observe for Safety Safety PrecautionPart Names and Functions Refrigerant recovery equipmentOperation Section Display SectionMode Select button Operation Mode displayTemperature setting display Timer displayService Ref SpecificationsPKA-A12HA4 PKA-A18HA4 Noise Criterion CurvesUnit inch mm Outlines and DimensionsTB5 Wiring DiagramHeat exchanger Refrigerant System DiagramTroubleshooting TroubleshootingWired remote controller MALFUNCTION-DIAGNOSIS Method by Remote ControllerCase of trouble during operation U9,UH Unit’s power terminal block L1, L2, GR Wired remote controller LED 1, 2 PCB in outdoor unitAppear even when operation Remote controller wire shortSELF-DIAGNOSIS Action Table Operating Pipe temperatureRemote controller transmission Cause Countermeasure Pipe temperature thermistorErrorE0/signal receiving errorE4 Condenser-Evaporator TH5Error Transmitting error Error Signal receiving errorRemote controller control board Indoor/outdoor unit communicationPhenomena Cause Countermeasure 1Upward/downward vane Troubleshooting by Inferior PhenomenaPerformance failure ControllerEmergency Operation When the remote controller cannot be usedHeat pump type Cooling Only typeLower temperature HOW to Check the Parts PKA-A12HA4 PKA-A18HA4Condenser/evaporator temperature ThermistorSensor signal check Test Point Diagram Functions of DIP Switch and Jumper Wire Operation Special FunctionRotation function and Back-up function Outline of functions System constraintRotation setting Request Code List2nd stage cut-in setting 2nd unit Cut-outSetting method of each function by wired remote controller How to connectBACK-UP Heating Function CN152 Outline of functionsOperation Procedure Photos & Illustrations Disassembly ProcedurePhoto Forward to remove the front panel. See PhotoOperation Procedure Photos Removing the Nozzle Assembly with Vane Photo Operation ProcedureVane Motor and Drain Hose Disconnect the connector CN20 on the indoor controller Remove the room temperature thermistorRemove the electrical box cover BoardPage Page Page New publication, effective Nov

PKA-A18HA4, PKA-A12HA4 specifications

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