Error Code Display - LG MULTI V 5 Manual Book

1. Error Code Display

48
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, 4: Slave 3)
Ex) 1051 : Error occurrence with error number 105 at No. 1 outdoor unit (=Master unit)
In case of indoor unit error occurrence, the error number is only shown at remote controller
without 7 segment LED of outdoor unit.
Ex) CH → 01 : Error occurrence with error number 01 (at remote controller)
In case of compressor error occurrence, 7 segment LED of outdoor unit control board
will display its error number alternately with compressor number.
Ex) 213 → C23 : It means that compressor error occurred with Error No. 21 at No. 3 Outdoor unit (=Slave2)
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Display Title
Display Title
0 1 - Air temperature sensor of indoor unit
0 2 - Inlet pipe temperature sensor of indoor unit
0 1 - Air temperature sensor of indoor unit
Communication error : wired remote controller ↔
0 3 -
indoor unit
0 4 - Drain pump
0 2 - Inlet pipe temperature sensor of indoor unit
0 5 - Communication error : outdoor unit ↔ indoor unit
0 6 - Outlet pipe temperature sensor of indoor unit
Communication error : wired remote controller
0 3 -
↔ indoor unit
Hydro Kit Hot water storage tank Temperature
0 8 -
sensor
0 4 - Drain pump
0 9 - Indoor EEPROM Error
Communication error :
0 5 - (Gen2) IDU ↔ ODU
1 0 - Poor fan motor operation
(Gen4) IDU main ↔ IDU local modem
Communication error : Hydro Kit Indoor unit ↔
1 0 1 6 - - Outlet pipe temperature sensor of indoor unit
Inv.PCB
1 2 - Hydro Kit Inv.PCB error
Hydro Kit Hot water storage tank
0 8 -
Temperature sensor
Hydro Kit Solar heat piping temperature sensor
1 3 -
error
0 9 - Indoor EEPROM Error
1 4 - Hydro Kit Indoor unit Flow switch error
1 5 - Hydro Kit Liquid pipe Strange overheat Error
1 0 - Poor fan motor operation
Hydro KitIndoor unit Inlet and Outlet pipe Temper-
1 6 -
ature sensor Error
Communication error : Hydro Kit Indoor unit ↔
Hydro Kit Indoor unit Inlet pipe Temperature sen-
1 1 -
Inv.PCB
sor Error
1 7 -
Outside air Introduction duct Inlet pipe Tempera-
ture sensor Error
1 2 - Hydro Kit Inv.PCB error
Hydro Kit Indoor unit Outlet pipe Temperature sen-
1 8 -
sor Error
- Hydro Kit Solar heat piping temperature
1 3
2 1 * Outdoor Unit Inverter Compressor IPM Fault
sensor error
Inverter PCB Input Over Current(RMS) of Master
2 2 *
Outdoor Unit
1 4 - Hydro Kit Indoor unit Flow switch error
Outdoor Unit Inverter Compressor DC Link Low or
2 3 *
High Voltage
- Hydro Kit Liquid pipe Strange overheat
2 4 * Outdoor Unit High Pressure Switch
1 5
Error
2 5 * Outdoor Unit Input Voltage High/ Low Voltage
• 1 : Master outdoor unit error, 2 : salve 1 outdoor unit error
076
_TROUBLE SHOOTING GUIDE BOOK
• 3 : slave2 outdoor unit error, 4 : slave3 outdoor unit error
Repeat
Error No. of Unit
Error No. of Compressor
Error No.
Cause of Error
Cause of Error
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor unit is open or short
Air temperature sensor of indoor unit is open or
short
Failing to receive wired remote controller signal in indoor unit PCB
Malfunction of drain pump Inlet pipe temperature sensor of indoor unit is open
or short
Failing to receive outdoor unit signal in indoor unit PCB
Outlet pipe temperature sensor of indoor unit is open or short
Failing to receive wired remote controller signal in
indoor unit PCB
Pipe temperature sensor is open or short
Malfunction of drain pump
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
Failing to receive the signal :
(Gen2) from ODU
Disconnecting the fan motor connector / Failure of indoor
fan motor lock (Gen4) from IDU local modem
Outlet pipe temperature sensor of indoor unit is
Failing to receive Inv. PCB signal in indoor unit
open or short
Hydro Kit Inv.PCB error
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
In case when the serial number marked on EEPROM
Flow switch flow detection error
of Indoor unit is 0 or FFFFFF
Temperature sensor defective or hot water inflow
Disconnecting the fan motor connector / Failure of
indoor fan motor lock
Pipe temperature sensor is open or short
Failing to receive Inv. PCB signal in indoor unit
Pipe temperature sensor is open or short
Hydro Kit Inv.PCB error
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Master Outdoor Unit Inverter Compressor Drive IPM Fault
Master Outdoor Unit Inverter PCB Input Current excess (RMS)
Flow switch flow detection error
System is turned off by Master Outdoor Unit DC Link Low/High
Voltage.
System is turned off by Master Outdoor Unit high pressure switch.
Temperature sensor defective or hot water inflow
Over 537V or below 247V (ARUM***LTE5)
Over 310V or below 143V (ARUM***BTE5)
Over 598V or below 320V (ARUM***DTE5)
Display Title
Hydro KitIndoor 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 Tempera-
1 8 -
ture sensor Error
2 3 0 - Refrigerant leakage sensing error
Communication error between IDU and ODU
2 3 7 -
local modem
Communication error between ODU modem
2 3 8 -
and ODU PCB
2 1 * Outdoor Unit Inverter Compressor IPM Fault
Inverter PCB Input Over Current(RMS) of
2 2 *
Master Outdoor Unit
Outdoor Unit Inverter Compressor DC Link
2 3 *
Low or High Voltage
2 4 * Outdoor Unit High Pressure Switch
Outdoor Unit Input Voltage High/ Low
2 5 *
Voltage
Outdoor Unit Inverter Compressor Start
2 6 *
Failure
Outdoor Unit Inverter Compressor Over
2 9 *
Current
Outdoor Unit Inverter Compressor1 High
3 2 *
Discharge Temperature
Outdoor Unit Inverter Compressor2 High Dis-
3 3 *
charge Temperature
3 4 * High Pressure of Outdoor Unit
3 5 * Low Pressure of Outdoor Unit
Outdoor Unit Inverter Compressor CT Sen-
4 0 *
sor Fault
Outdoor Unit Inverter Compressor1 Discharge
4 1 *
Temperature Sensor Fault
4 2 * Outdoor Unit Low Pressure Sensor Fault
4 3 * Outdoor Unit High Pressure Sensor Fault
4 4 * Outdoor Unit Air Temperature Sensor Fault
Outdoor Unit Heat Exchanger Temperature
4 5 *
Sensor(Front side) Fault
4 6 *
Outdoor Unit Suction Temperature Sensor Fault
Cause of Error
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Malfunction of Refrigerant Sensor
Failing to receive the signal from ODU local modem
Failing to receive receive the signal from outdoor
unit packet
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.
Over 537V or below 247V (ARUM***LTE5)
Over 310V or below 143V (ARUM***BTE5)
Over 598V or below 320V (ARUM***DTE5)
The first start failure by Outdoor Unit Inverter Com-
pressor abnormality or Compressor locked
Outdoor Unit Inverter Compressor Fault OR Drive
Fault
Outdoor Unit Inverter Compressor1 High Discharge
Temperature
Outdoor Unit Inverter Compressor2 High Discharge
Temperature
High Pressure of Outdoor Unit
Low Pressure of Outdoor Unit
Outdoor Unit Inverter Compressor CT Sensor open
or short
Outdoor Unit Inverter Compressor Discharge Tem-
perature Sensor open or short
Outdoor Unit Low Pressure Sensor open or short
Outdoor Unit High Pressure Sensor open or short
Outdoor Unit Air Temperature Sensor open or short
Outdoor Unit Heat Exchanger Temperature
Sensor(Front side) open or short
Outdoor Unit Suction Temperature Sensor open or
short
077
_