Mitsumi electronic PKA-A12HA4 Operation Mode display, Display, ON/OFF button, Mode Select button

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●IR wireless remote controller (Option)

CHECK TESTRUN display

OPERATION MODE display

OPERATION MODE display

Indicates which operation mode is in effect.

display

The vertical direction of airflow is indicated.

display

Displays selected fan speed.

ON/OFF button

The unit is turned ON and OFF alternately

each time the button is pressed.

FAN SPEED SELECT button

Changes the fan speed.

MODE SELECT button

Switches the operation mode between COOLING/DRY/FAN/HEATING and AUTO mode.

In case the outdoor unit is cooling only type, the heating and auto mode are not available.

CHECK-TEST RUN button

Performs an inspection check or test operation. Do not use it for normal operation.

VANE CONTROL button

Changes the air flow direction.

Indicate that the unit is being checked or test-run.

MODEL SELECT display

Blinks when model is selected.

COOL

CHECK

TEST

°F

 

MODEL

RUN

DRY

°C

SELECT

 

STOP AMPM

AUTO

FAN

SWING

 

FAN

 

START AMPM

 

 

HEAT

NOT AVAILABLE

 

ON/OFF

 

TEMP

 

FAN

AUTO STOP

MODE

VANE

AUTO START

CHECK

LOUVER

h

TEST RUN

 

min

SET

RESET CLOCK

display

Lights up while the signal is transmitted to the indoor unit when the button is pressed.

Temperature setting display

Indicates the desired temperature setting which is set.

CLOCK display

Displays the current time.

TIMER display

Displays when in timer operation or when setting timer.

“ ” “ ” display

Displays the order of timer operation.

“ ” “” display

Displays whether timer is on or off.

button

Sets any desired room temperature.

TIMER CONTROL buttons

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time.

AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

"h" and "min" buttons

Buttons used to set the “hour and minute” of the current time and timer settings.

LOUVER button

Changes left / right airflow direction.

(Not available for this model.)

CLOCK button

RESET button

SET button

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Contents Contents Parts Catalog OCB483Reference Manual Service Ref PUZ-A18/24/36NHA4Remote controller Optional parts PUZ-A18/24/36NHA4-BS PUY-A12/18/24/36NHA4Safety Precaution Always Observe for SafetyRefrigerant recovery equipment Part Names and FunctionsDisplay Section Operation SectionTemperature setting display Operation Mode displayMode Select button Timer displaySpecifications Service RefNoise Criterion Curves PKA-A12HA4 PKA-A18HA4Outlines and Dimensions Unit inch mmWiring Diagram TB5Refrigerant System Diagram Heat exchangerTroubleshooting TroubleshootingMALFUNCTION-DIAGNOSIS Method by Remote Controller Wired remote controllerCase of trouble during operation U9,UH Appear even when operation Wired remote controller LED 1, 2 PCB in outdoor unitUnit’s power terminal block L1, L2, GR Remote controller wire shortSELF-DIAGNOSIS Action Table Pipe temperature OperatingErrorE0/signal receiving errorE4 Cause Countermeasure Pipe temperature thermistorRemote controller transmission Condenser-Evaporator TH5Remote controller control board Error Signal receiving errorError Transmitting error Indoor/outdoor unit communicationPerformance failure Troubleshooting by Inferior PhenomenaPhenomena Cause Countermeasure 1Upward/downward vane ControllerHeat pump type When the remote controller cannot be usedEmergency Operation Cooling Only typeCondenser/evaporator temperature HOW to Check the Parts PKA-A12HA4 PKA-A18HA4Lower temperature ThermistorSensor signal check Test Point Diagram Functions of DIP Switch and Jumper Wire Rotation function and Back-up function Outline of functions Special FunctionOperation System constraint2nd stage cut-in setting Request Code ListRotation setting 2nd unit Cut-outBACK-UP Heating Function CN152 How to connectSetting method of each function by wired remote controller Outline of functionsPhoto Disassembly ProcedureOperation Procedure Photos & Illustrations Forward to remove the front panel. See PhotoOperation Procedure Photos Operation Procedure Removing the Nozzle Assembly with Vane PhotoVane Motor and Drain Hose Remove the electrical box cover Remove the room temperature thermistorDisconnect the connector CN20 on the indoor controller BoardPage Page Page New publication, effective Nov

PKA-A18HA4, PKA-A12HA4 specifications

Mitsumi Electric Company is known for its innovations in the electronic components sector, and among its noteworthy products are the PKA-A18HA4 and PKA-A12HA4 components. Both models represent advancements in their respective categories, characterized by reliability, high performance, and cutting-edge technology.

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