Installation Manual 71
ENGLISH
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
outside 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 controller 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 indoor 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 7 - Different operation mode Operation mode between indoor unit and outdoor unit is different
0 9 - Indoor EEPROM Error
In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF
0 10 - Poor fan motor operation
Disconnecting the fan motor connector/Failure of indoor fan motor
lock
0 11 -
Communication error: indoor unit main PCB
of outdoor.
PCB Damage
Outside Unit related Error
2 1 *
Master outside unit inverter compressor IPM
Fault
Master outside unit inverter compressor drive IPM error
2 2 *
Inverter Board Input Over Current(RMS) of
Master outside Unit
Master Outside Unit Inverter Board Input Current excess (RMS)
2 3 *
Master outside unit inverter compressor DC link
under-voltage
DC voltage is not charged after master outside unit operating relay is
turned on
2 4 * Master outside unit high pressure switch
Compressor maintenance by master outside unit high pressure switch
Flow rate insufficiency or flow switch trouble of master outside unit
2 5 *
Master outside unit input voltage over-
voltage/under-voltage
Master outside unit input voltage over-voltage or under-voltage
2 6 *
Master outside unit inverter compressor operation
failure error
Initial operation failure due to master outside unit inverter compressor error
2 8 *
Master outside unit inverter DC link over-voltage
error
Compressor turned Off due to master outside unit inverter DC voltage
over-charge
2 9 *
Master outside unit inverter compressor overcurrent
Master outside unit inverter compressor error or operating component
(IPM) error operation
3 2 *
Master outside unit inverter compressor
discharge temperature over-rise
Compressor turned off due to master outside unit inverter compressor
discharge temperature over-rise Flow rate insufficiency or flow switch
trouble of master outside unit
3 4 * Master outside unit high pressure over-rise
Compressor turned off due to master outside unit high pressure over-rise
Flow rate insufficiency or flow switch trouble of master outside unit
3 5 * Master outside unit low pressure over-drop.
Compressor turned off due to master outside unit low pressure overdrop.
3 6 *
Master Outside Unit Low Compression Ratio Limited Master Outside Unit stayed under low Compression limit for 3 minutes
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