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Outdoor Unit Faulty IPM
4
9
1
Temperature Sensor
Omitting connection of R, S, T
5
0
1
power of Outdoor Unit
Transmission error : inverter PCB '
5
2
1
Main PCB
Transmission error : indoor unit '
5
3
1
main PCB of Outdoor Unit
Reverse connection of R, S, T
5
4
1
power of Outdoor Unit
Outdoor Unit Communication Error
5
7
1
with Inverter Controller
Inverter PCB EEPROM Error of
6
0
1
Outdoor Unit
6
7
1
Outdoor Unit Fan Lock
Instant Over Current(Peak) of
7
3
1
Outdoor Unit PFC
7
5
1
Outdoor Unit Fan CT Sensor Error
Outdoor Unit Fan DC Link High
7
6
1
Voltage Error
Outdoor Unit Fan Over Current
7
7
1
Error
7
9
1
Outdoor Unit Fan Start Failure Error
Title
Outdoor Unit IPM Temperature Sensor
short/open
Omitting connection 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 invert-
er control signals (usually happens after on-board-
ing)
Access Error of Inverter PCB of Outdoor Unit
Restriction 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
SETTING & TEST
Cause of Error
45
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