Mitsubishi Electronics PEAD-A36AA 사용자 설명서

21

1 Check the power supply voltage.

2 Check the indoor/outdoor connecting wire for mis-wiring.

1 Before servicing the air conditioner, be sure to turn off the remote controller first to stop the main unit, and then turn 

off the breaker.

2 When removing the indoor controller board, hold the edge of the board with care NOT to apply stress on the 

components.

3 When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK

DAY

MONITOR/SET

CLOCK

ON/OFF

B

C

A

E D F

ERROR CODE

(1) Turn on the power.
(2) Press the [CHECK] button twice.
(3) Set refrigerant address with [TEMP] button 

if system control is used.

(4) Press the [ON/OFF] button to stop the 

self-check.
A

A CHECK button

B

B Indoor Unit’

s

Refrigerant address

C

C TEMP button

D

D IC : Indoor unit

OC : Outdoor unit

E

E Check code

F

F Indoor Unit No.

1 

Check code

Symptom

Remark

P1

Intake sensor error

P2

Pipe (TH2) sensor error

P9

Pipe (TH5) sensor error

E6,E7

Indoor/outdoor unit communication error

P4

Drain sensor error

P5

Drain pump error

P6

Freezing/Overheating protection operation

EE

Communication error between indoor and outdoor units

P8

Pipe temperature error

E0, E3~E5

Remote controller transmission error

E1, E2

Remote controller control board error

Fb

Indoor unit control system error (memory error, etc.)

E9

Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)

UP

Compressor overcurrent interruption

U3,U4

Open/short of outdoor unit thermistors

UF

Compressor overcurrent interruption (When compressor locked)

U2

Abnormal high discharging temperature/49C worked/insufficient refrigerant

U1,Ud

Abnormal high pressure (63H worked)/Overheating protection operation

U5

Abnormal temperature of heat sink

U8

Outdoor unit fan safeguard stop

U6

Compressor overcurrent interruption/Abnormal of power module

U7

Abnormality of super heat due to low discharge temperature

U9,UH

Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit
/Current sensor error

Others

Other errors (Refer to the technical manual for the outdoor unit.)

For details, check the LED display
of the outdoor controller board.
As for outdoor unit, refer to
service manual OCH458.

• On wired remote controller.
1 Check code displayed in the LCD. 

• For description of each check code, refer to the following table.