LG PAHCMS000 Service Manual page 17

[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
1 0 4 1
1 0 5 1
1 0 6 1
1 0 7 1
1 1 3 1
1 1 5 1
1 5 1 1
1 7 3 1
1 7 4 1
1 9 0 1
1 9 1 1
1 9 3 1
1 9 4 1
Title
Communication Error Between
Outdoor unit and Other Outdoor Unit
Outdoor unit Fan PCB
Communication Error
Outdoor unit FAN IPM Fault Error
Outdoor unit Fan DC Link Low
Voltage Error
Outdoor unit Liquid pipe Temperature
Sensor Error
Outdoor unit Subcooling Outlet
Temperature Sensor Error
Failure of operation mode conversion
at Outdoor Unit
Outdoor unit Constant Speed
Compressor Fault
Outdoor unit rated speed 2
condenser over-current
Excessive increase of outdoor unit
Inverter PCB Heat sink Temperature
Outdoor unit Inverter PCB Heat sink
Temperature sensor error
Excessive increase of Outdoor unit Fan
PCB Heat Sink Temperature
Outdoor unit Fan PCB Heat Sink
Temperature Sensor Error
Failing to receive Slave Unit signal at main PCB
of Outdoor unit
Failing to receive fan signal at main PCB of
master unit.
Instant Over Current at Outdoor unit Fan IPM
Outdoor unit Fan DC Link Input Voltage is under
380V
Liquid pipe temperature sensor of Outdoor unit is
open or short
Outdoor unit Subcooling Outlet Temperature
Sensor open or short
Pressure unbalance between Outdoor Units
Comp locking, Check Valve leakage, comp
dielectric break down at Outdoor Unit
Outdoor unit rated speed 2 condenser burned /
locked or fault by over-current
Outdoor unit Inverter PCB Heat sink temperature
is over 95℃
Outdoor unit Inverter PCB Heat sink temperature
sensor open or short
Outdoor unit Fan Inverter PCB Temperature is Over
95°C
Outdoor unit Fan PCB Heat Sink Temperature Sensor
open or short
- 17 -
Troubleshooting
Cause of Error