Error Code

Abnormal point and detection method

Case

Judgment and action

 

Remote controller transmission

 

1 Set a remote controller to main, and the

 

error(E3)/signal receiving error(E5)

1 2 remote controller are set as

other to sub.

 

1 Abnormal if remote controller could not

“main.”

 

 

find blank of transmission path for 6 sec-

(In case of 2 remote con-

 

 

onds and could not transmit.

trollers)

 

 

(Error code: E3)

 

 

2 Remote controller is connected

2 Remote controller is connected with only one

 

2 Remote controller receives transmitted

 

data at the same time, compares the

with 2 indoor units or more.

indoor unit.

 

data, and when detecting it, judges

3 Repetition of refrigerant

3 The address changes to a separate setting.

E3

different data to be abnormal 30

address

 

or

continuous times. (Error code: E3)

4 Defective transmitting receiving

4~6 Diagnose remote controller.

E5

1 Abnormal if indoor controller board could

circuit of remote controller

a) When “RC OK”is displayed, remote con-

 

5 Defective transmitting receiving

trollers have no problem.

 

not find blank of transmission path.

circuit of indoor controller

Turn the power off, and on again to check.

 

(Error code: E5)

 

When becoming abnormal again, replace

 

2 Indoor controller board receives trans-

board

 

indoor controller board.

 

mitted data at the same time, compares

6 Noise has entered into trans-

 

b)When “RC NG”is displayed, replace

 

the data,and when detecting it, judges

mission wire of remote con-

 

remote controller.

 

different data to be abnormal 30

troller.

 

c)When “RC E3”or “ERC 00-66”is displayed,

 

continuous times. (Error code: E5)

 

 

noise may be causing abnormality.

 

 

 

 

 

 

 

 

Indoor/outdoor unit communication

1 Contact failure of indoor/out-

1 Check disconnection or looseness of indoor/

 

error (Signal receiving error)

door unit connecting wire

outdoor unit connecting wire of indoor or out-

 

(Outdoor unit)

2 Defective communication circuit

door units.

E8

(1) Abnormal if outdoor controller circuit

of outdoor controller circuit board

2~4 Turn the power off, and on again to

(6840)

board could not receive anything

3 Defective communication cir-

check. Replace indoor controller board or

 

normally for 3 minutes.

cuit of indoor controller board

outdoor controller circuit board if abnormal-

 

 

4 Noise has entered into indoor/

ity is displayed again.

 

 

outdoor unit connecting wire.

 

 

 

 

 

 

Indoor/outdoor unit communication

1 Indoor/ outdoor unit connecting

1 Check disconnection or looseness of

 

error (Transmitting error) (Outdoor unit)

wire has contact failure.

indoor/outdoor unit connecting wire.

 

(1) Abnormal if “0” receiving is detected 30

2 Defective communication circuit

2~4 Turn the power off, and on again to

E9

times continuously though outdoor con-

of outdoor controller circuit board

check. Replace outdoor controller circuit

(6841)

troller circuit board has transmitted “1”.

3 Noise has entered power supply.

board if abnormality is displayed again.

 

(2) Abnormal if outdoor controller circuit

4 Noise has entered indoor/ out-

 

 

board could not find blank of transmission

door unit connecting wire.

 

 

 

 

 

path for 3 minutes.

 

 

 

 

 

 

 

Non defined error code

1 Noise has entered transmission

12 Turn the power off, and on again to check.

 

This code is displayed when non defined

wire of remote controller.

Replace indoor controller board or outdoor

EF

error code is received.

2 Noise has entered indoor/ out-

controller circuit board if abnormality is

(6607

 

door unit connecting wire.

displayed again.

or

 

3 Outdoor unit is not a power-

3 Replace outdoor unit with power-inverter type

6608)

 

inverter models.

outdoor unit.

 

 

4 Model name of remote con-

4 Replace remote controller with MA remote

 

 

troller is PAR-S25A.

controller.

 

 

 

 

 

Serial communication error

1 Breaking of wire or contact

12 Check connection of each connector CN2

 

1.Abnormal if serial communication

failure of connector CN2

and CN4 between the outdoor controller

 

between outdoor controller circuit

between the outdoor controller

circuit board and the outdoor power circuit

 

board and outdoor power circuit board

circuit board and the outdoor

board.

 

is defective.

power circuit board

 

 

 

2 Breaking of wire or contact

 

 

 

failure of connector CN4

 

 

 

between the outdoor controller

 

 

 

circuit board and the outdoor

 

 

 

power circuit board

 

 

 

3 Defective communication circuit

3 Replace outdoor power circuit board.

 

 

of outdoor power circuit board

 

Ed

 

4 Defective communication circuit

4 Replace outdoor controller circuit board.

(0403)

 

of outdoor controller circuit board

 

 

 

for outdoor power circuit board

 

 

2. Abnormal if communication between

1 Breaking of wire or contact

1 Check disconnection, looseness, or breaking of

 

outdoor controller circuit board and

failure of connector between

connection wire between outdoor controller cir-

 

M-NET board is not available.

outdoor controller circuit board

cuit board (CNMNT) and M-NET board (CN5).

 

 

and M-NET board

 

 

 

2 Contact failure of M-NET board

2 Check disconnection, looseness, or breaking of

 

 

power supply line

connection wire between outdoor controller cir-

 

 

 

cuit board(CNMNT) and M-NET board (CND).

 

 

3 Noise has entered into M-NET

3 Check M-NET transmission wiring method.

 

 

transmission wire.

 

 

 

 

 

41

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Mitsubishi Electronics PUZ-A24NHA2-BS, PUZ-A30NHA2 Case Judgment and action Remote controller transmission, Outdoor unit

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