LG MULTI V WATER IV ARWV100DAL4 Installation Manual page 51

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
0 1 - Air temperature sensor of indoor unit
0 2 - Inlet pipe temperature sensor of indoor unit
- Communication error : wired remote controller ÷ indoor unit Failing to receive wired remote controller signal in indoor unit PCB
0 3
0 4 - Drain pump
- Communication error : outdoor unit ÷ indoor unit Failing to receive outdoor unit signal in indoor unit PCB
0 5
0 6 - Outlet pipe temperature sensor of indoor unit
0 9 - Indoor EEPROM Error
1 0 - Poor fan motor operation
1 7 - Inlet Air temperature sensor of FAU
Master outside unit inverter compressor IPM
2 1 *
Fault
Inverter Board Input Over Current(RMS) of
2 2 *
Master outside Unit
Master outside unit inverter compressor DC link
2 3 *
under-voltage
2 4 * Master outside unit high pressure switch
Master outside unit input voltage over-
2 5 *
voltage/under-voltage
Master outside unit inverter compressor operation
2 6 *
failure error
Master outside unit inverter DC link over-voltage
2 8 *
error
2 9 * Master outside unit inverter compressor overcurrent
* Master outside unit inverter compressor
3 2
discharge temperature over-rise
3 4 * Master outside unit high pressure over-rise
3 5 * Master outside unit low pressure over-drop.
3 6 * Master Outside Unit Low Compression Ratio Limited Master Outside Unit stayed under low Compression limit for 3 minutes
* Master Outside unit Communication error between
3 9
Master outside unit PFC and inverter board
Title
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor unit is open or short
Malfunction of drain pump
Outlet pipe temperature sensor of indoor unit is open or short
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
Air temperature sensor of indoor unit is open or short
Master outside unit inverter compressor drive IPM error
Master Outside Unit Inverter Board Input Current excess (RMS)
DC voltage is not charged after master outside unit operating relay is
turned on
Compressor maintenance by master outside unit high pressure switch
Flow rate insufficiency or flow switch trouble of master outside unit
Master outside unit input voltage over-voltage or under-voltage
Initial operation failure due to master outside unit inverter compressor error
Compressor turned Off due to master outside unit inverter DC voltage
over-charge
Master outside unit inverter compressor error or operating component
(IPM) error operation
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
Compressor turned off due to master outside unit high pressure over-rise
Flow rate insufficiency or flow switch trouble of master outside unit
Compressor turned off due to master outside unit low pressure overdrop.
Master Outside unit inverter compressor current detection (CT) sen-
sor disconnection or short circuit
Test Run
Cause of Error
Installation Manual 51