LG PAHCMS000 Service Manual page 16
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Also See for PAHCMS000:
- Installation manual (60 pages) ,
- Installation manual (47 pages) ,
- Owners & installation manual (7 pages)
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Troubleshooting
[Error Code (Outdoor Unit)]
• This page is about outdoor error code. It can vary depending on outdoor unit. For more information, please
refer to the outdoor unit manual.
Display
Outdoor unit Constant Speed Compressor1 Discharge
4
7
1
Temperature Sensor Fault
Outdoor unit Constant Speed Compressor2 Discharge
4
8
1
Temperature Sensor Fault
Outdoor unit Faulty IPM Temperature
4
9
1
Sensor
Omitting connection of R, S, T power of
5
0
1
Outdoor unit
Excessive capacity of indoor units
5
1
1
Transmission error : inverter PCB ' Main
5
2
1
PCB
Transmission error : indoor unit ' main
5
3
1
PCB of Outdoor Unit
Reverse connection of R, S, T power of
5
4
1
Outdoor unit
Outdoor unit Communication Error with
5
7
1
Inverter Controller
Inverter PCB EEPROM Error of Outdoor
6
0
1
Unit
6
7
1
Outdoor unit Fan Lock
6
9
1
Constant1 CT Sensor Error of Outdoor Unit
7
0
1
Constant2 CT Sensor Error of Outdoor Unit
Instant Over Current(Peak) of Outdoor unit
7
3
1
PFC
7
5
1
Outdoor unit Fan CT Sensor Error
Outdoor unit Fan DC Link High Voltage
7
6
1
Error
7
7
1
Outdoor unit Fan Over Current Error
7
9
1
Outdoor unit Fan Start Failure Error
8
6
1
Outdoor unit Main PCB EEPROM Error
8
7
1
Outdoor unit Fan PCB EEPROM Error
Title
- 16 -
Cause of Error
Outdoor unit Constant Speed Compressor1 Discharge
Temperature Sensor open or short
Outdoor unit Constant Speed Compressor 2 Discharge
Temperature Sensor open or short
Outdoor unit IPM Temperature Sensor short/open
Omitting connection of outdoor unit
Excessive connection of indoor units compared to capacity
of Outdoor Unit
Failing to receive inverter signal at main PCB of Outdoor
unit
Failing to receive indoor unit signal at main PCB of
Outdoor Unit .
Reverse connection or omitting connection of R, S, T power
of Outdoor unit
Outdoor unit Controller part cannot receive inverter control
signals (usually happens after on-boarding)
Access Error of Inverter PCB of Outdoor unit
Restriction of Outdoor unit
Constant1 CT Sensor open or short of Outdoor unit
Constant2 CT Sensor open or short of Outdoor unit
Instant Over Current(Peak) of Outdoor unit PFC
Outdoor unit Fan CT Sensor open or short
Outdoor unit Fan DC Link High Voltage Error
Outdoor unit Fan Current is over 5A
Outdoor unit Fan First Position Sensing Failure
Communication Fail Between Outdoor unit Main MICOM
and EEPROM or omitting EEPROM
Communication Fail Between Outdoor unit Fan MICOM and
EEPROM or omitting EEPROM
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