LG Multi V PRHR033 Installation Manual page 53

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,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.(* = 1: Master, 2: Slave 1, 3: Slave 2)
Ex)
Repeat
Error No. of Unit
Error No. of Compressor
Error No.
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Display
0 1 - Air temperature sensor of indoor unit
0 2 - Inlet pipe temperature sensor of indoor unit
Communication error : wired remote controller ÷
0 3 -
indoor unit
0 4 - Drain pump
Communication error : outdoor unit ÷ indoor unit
0 5 -
0 6 - Outlet pipe temperature sensor of indoor unit
Hydro Kit Hot water storage tank Temperature
0 8 -
sensor
0 9 - Indoor EEPROM Error
1 0 - Poor fan motor operation
Communication error : Hydro Kit Indoor unit ÷
1 1 -
Inv.PCB
1 2 - Hydro Kit Inv.PCB error
1 3 - Hydro Kit Solar heat piping temperature sensor error
1 4 - Hydro Kit Indoor unit Flow switch error
1 5 - Hydro Kit Liquid pipe Strange overheat Error
Hydro Kit Indoor unit Inlet and Outlet pipe
1 6 -
Temperature sensor Error
Hydro Kit Indoor unit Inlet pipe Temperature sensor
Error
1 7 -
Outside air Introduction duct Inlet pipe Temperature
sensor Error
Hydro Kit Indoor unit Outlet pipe Temperature
1 8 -
sensor Error
2 3 0 - Error in refrigerant leakage detection
Poor communication between the outdoor unit and
2 3 7 -
the indoor unit
Poor communication between the controlling part of
2 3 8 -
the outdoor unit and the indoor unit.
2 1 * Master Outdoor Unit Inverter Compressor IPM Fault
Inverter PCB Input Over Current(RMS) of Master
2 2 *
Outdoor Unit
Master Outdoor Unit Inverter Compressor DC Link
2 3 *
Low or High Voltage
2 4 * Master Outdoor Unit High Pressure Switch
Master Outdoor Unit Input Voltage High/ Low
2 5 *
Voltage
Title Cause of Error
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
Pipe temperature sensor 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
Failing to receive Inv. PCB signal in indoor unit
Hydro Kit Inv.PCB error
Pipe temperature sensor is open or short
Flow switch flow detection error
Temperature sensor defective or hot water inflow
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Occurs when a refrigerant leakage sensor is detecting refrigerant
leakage
The indoor unit could not receive the communication signal
from the outdoor unit for at least 3 consecutive minutes
The controlling part of the outdoor unit could not receive the signal
for controlling the indoor unit
Master Outdoor Unit Inverter Compressor Drive IPM Fault
Master Outdoor Unit Inverter PCB Input Current excess (RMS)
System is turned off by Master Outdoor Unit DC Link Low/High
Voltage.
System is turned off by Master Outdoor Unit high pressure switch.
Master Outdoor Unit input voltage is over 537 V or below 247 V
(ARWM***LAS5)
Master Outdoor Unit input voltage is over 310 V or below 143 V
(ARWM***BAS5)
Master Outdoor Unit input voltage is over 598 V or below 320 V
(ARWM***DAS5)
Master Outdoor Unit input voltage is over 776 V or below 373 V
(ARWM***CAS5)
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