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92 Outdoor Unit
Test Run
Self-Diagnosis Function
Error Indicator
• This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of
outdoor unit control board as shown in the table.
•  If more than two troubles occur simultaneously, lower number of error code is first displayed.
After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd LED of 7-segment indicates error number, 3rd LED indicates unit number.
Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2
011 051 : No.105 error of master unit
Display Title Cause of Error
Indoor unit related error
0 1 - Air temperature sensor of indoor unit Air temperature sensor of indoor unit is open or short
0 2 - Inlet pipe temperature sensor of indoor unit Inlet pipe temperature sensor of indoor unit is open or short
0 3 -
Communication error : wired remote con-
troller ÷ indoor unit
Failing to receive wired remote controller signal in indoor
unit PCB
0 4 - Drain pump Malfunction of drain pump
0 5 -
Communication error : outdoor unit ÷ in-
door unit
Failing to receive outdoor unit signal in indoor unit PCB
0 6 -
Outlet pipe temperature sensor of indoor
unit
Outlet pipe temperature sensor of indoor unit is open or
short
0 9 - Indoor EEPROM Error
In case when the serial number marked on EEPROM of In-
door unit is 0 or FFFFFF
1 0 - Poor fan motor operation
Disconnecting the fan motor connector/Failure of indoor
fan motor lock
1 7 - Inlet Air temperature sensor of FAU Air temperature sensor of indoor unit is open or short
Outdoor unit related error
2 1
1
Master Outdoor Unit Inverter Compressor
IPM Fault
Master Outdoor Unit Inverter Compressor Drive IPM Fault
2
Slave1 Outdoor Unit Inverter Compressor
IPM Fault
Slave1 Outdoor Unit Inverter Compressor Drive IPM Fault
3
Slave2 Outdoor Unit Inverter Compressor
IPM Fault
Slave2 Outdoor Unit Inverter Compressor Drive IPM Fault
2 2
1
Inverter Board Input Over Current(RMS) of
Master Outdoor Unit
Master Outdoor Unit Inverter Board Input Current excess
(RMS)
2
Inverter Board Input Over Current(RMS) of
Slave1 Outdoor Unit
Slave1 Outdoor Unit Inverter Board Input Current excess
(RMS)
3
Inverter Board Input Over Current(RMS) of
Slave2 Outdoor Unit
Slave2 Outdoor Unit Inverter Board Input Current excess
(RMS)
h Refer to the DX-Venitilation manual for DX-Venitilation error code
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