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