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82 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 slave
011 ’ 051 : No.105 error of master unit
Display Title Cause of Error
01-
02-
03-
04-
05-
06-
07-
09-
10-
11-
1
Master Outdoor Unit Inverter Compressor Drive IPM Fault
212
Slave1 Outdoor Unit Inverter Compressor Drive IPM Fault
3
Slave2 Outdoor Unit Inverter Compressor Drive IPM Fault
1
Master Outdoor Unit Inverter Board Input Current excess (RMS)
222
Slave1 Outdoor Unit Inverter Board Input Current excess (RMS)
3
Slave2 Outdoor Unit Inverter Board Input Current excess (RMS)
1
DC charging is not performed at Master Outdoor Unit after starting
relay turn on.
232
DC charging is not performed at Slave1 Outdoor Unit after starting
relay turn on.
3
DC charging is not performed at Slave2 Outdoor Unit after starting
relay turn on.
Air temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit
Communication error : wired
remote controller ÷ indoor unit
Drain pump
Communication error : outdoor
unit ÷ indoor unit
Outlet pipe temperature sensor of
indoor unit
Different operation mode
Serial No.
Poor fan motor operation
Communication error: indoor unit
’ main PCB of outdoor.
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor unit is open or short
Failing to receive wired remote controller signal in
indoor unit PCB
Malfunction of drain pump
Failing to receive outdoor unit signal in indoor unit PCB
Outlet pipe temperature sensor of indoor unit is
open or short
Operation mode between indoor unit and outdoor unit
is different
In case when the serial number marked on
EEPROM of Indoor unit is 0 or FFFFFF
Disconnecting the fan motor connector/Failure of indoor fan
motor lock
When the addressing signal doesn't respond for 3mins. suddenly,
while the indoor unit gets the calling signal from the outdoor unit,
Master Outdoor Unit Inverter Compressor
IPM Fault
Slave1 Outdoor Unit Inverter Compressor
IPM Fault
Slave2 Outdoor Unit Inverter Compressor
IPM Fault
Inverter Board Input Over Current(RMS) of
Master Outdoor Unit
Inverter Board Input Over Current(RMS) of
Slave1 Outdoor Unit
Inverter Board Input Over Current(RMS) of
Slave2 Outdoor Unit
Master Outdoor Unit Inverter Compressor
DC link Low Voltage
Slave1 Outdoor Unit Inverter Compressor
DC link Low Voltage
Slave2 Outdoor Unit Inverter Compressor
DC link Low Voltage
Indoor unit related error
Outdoor unit related error
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