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SETTING & TEST
46
Display
Outdoor Unit Main PCB EEPROM
8
6
1
Error
Outdoor Unit Fan PCB EEPROM
8
7
1
Error
Outdoor Unit Fan PCB
1
0
5
1
Communication Error
1
0
6
1 Outdoor Unit FAN IPM Fault Error
Outdoor Unit Fan DC Link Low
1
0
7
1
Voltage Error
Outdoor Unit Liquid pipe
1
1
3
1
Temperature Sensor Error
Outdoor Unit Subcooling Outlet
1
1
5
1
Temperature Sensor Error
Failure of operation mode conver-
1
5
1
1
sion at Outdoor Unit
outdoor unit Main Board Main-
1
8
2
1
Sub Micom communication error
Excessive increase of Outdoor
1
9
3
1
Unit Fan PCB Heat Sink
Temperature
Outdoor Unit Fan PCB Heat Sink
1
9
4
1
Temperature Sensor Error
Title
Communication Fail Between Outdoor Unit
Main MICOM and EEPROM or omitting EEP-
ROM
Communication Fail Between Outdoor Unit Fan
MICOM and EEPROM or omitting EEPROM
Failing to receive fan signal at main PCB of 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
Outdoor Unit Main Board Main-Sub Micom
communication failed
Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
Cause of Error
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