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Master outdoor unit Main Board Main-
1
Sub Micom communication error
Slave1 outdoor unit Main Board Main-
2
Sub Micom communication error
1 8 2
Slave2 outdoor unit Main Board Main-
3
Sub Micom communication error
Slave3 outdoor unit Main Board Main-
4
Sub Micom communication error
Master Inv. oil equalizing pipe Tempera-
1
ture Sensor error
Slave1 Inv. oil equalizing pipe Tempera-
2
ture Sensor error
1 8 4
Slave2 Inv. oil equalizing pipe Tempera-
3
ture Sensor error
Slave3 Inv. oil equalizing pipe Tempera-
4
ture Sensor error
Master const.1 oil equalizing pipe Tem-
1
perature Sensor error
Slave1 const.1 oil equalizing pipe Tem-
2
perature Sensor error
1 8 5
Slave2 const.1 oil equalizing pipe Tem-
3
perature Sensor error
Slave3 const.1 oil equalizing pipe Tem-
4
perature Sensor error
Master const.2 oil equalizing pipe Tem-
1
perature Sensor error
Slave1 const.2 oil equalizing pipe Tem-
2
perature Sensor error
1 8 6
Slave2 const.2 oil equalizing pipe Tem-
3
perature Sensor error
Slave3 const.2 oil equalizing pipe Tem-
4
perature Sensor error
Excessive increase of Master Outdoor
1
Unit Fan PCB Heat Sink Temperature
Excessive increase of Slave1 Outdoor
2
Unit Fan PCB Heat Sink Temperature
1 9 3
Excessive increase of Slave2 Outdoor
3
Unit Fan PCB Heat Sink Temperature
Excessive increase of Slave3 Outdoor
4
Unit Fan PCB Heat Sink Temperature
Master Outdoor Unit Fan PCB Heat Sink
1
Temperature Sensor Error
Slave1 Outdoor Unit Fan PCB Heat Sink
2
Temperature Sensor Error
1 9 4
Slave2 Outdoor Unit Fan PCB Heat Sink
3
Temperature Sensor Error
Slave3 Outdoor Unit Fan PCB Heat Sink
4
Temperature Sensor Error
2 0 0
1
Searching pipe Error
2 0 1 C + #HR HR unit1 Liqiud sensor error
2 0 2 C + #HR HR unit1 Sub Cooling Pipe sensor error
2 0 3 C + #HR HR unit1 Sub Cooling Pipe Out sensor
error
2 0 4 C + #HR Communication error
C: HR unit
#: HR unit Number
Title
Master Outdoor Unit Main Board Main-Sub Micom com-
munication failed
Slave1 Outdoor Unit Main Board Main-Sub Micom com-
munication failed
Slave2 Outdoor Unit Main Board Main-Sub Micom com-
munication failed
Slave3 Outdoor Unit Main Board Main-Sub Micom com-
munication failed
Master Outdoor Unit oil equalizing temperature Sensor
open or short
Slave1 Outdoor Unit oil equalizing temperature Sensor
open or short
Slave2 Outdoor Unit oil equalizing temperature Sensor
open or short
Slave3 Outdoor Unit oil equalizing temperature Sensor
open or short
Master Outdoor Unit oil equalizing temperature Sensor
open or short
Slave1 Outdoor Unit oil equalizing temperature Sensor
open or short
Slave2 Outdoor Unit oil equalizing temperature Sensor
open or short
Slave3 Outdoor Unit oil equalizing temperature Sensor
open or short
Master Outdoor Unit oil equalizing temperature Sensor
open or short
Slave1 Outdoor Unit oil equalizing temperature Sensor
open or short
Slave2 Outdoor Unit oil equalizing temperature Sensor
open or short
Slave3 Outdoor Unit oil equalizing temperature Sensor
open or short
Master Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
Slave1 Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
Slave2 Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
Slave3 Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
Master Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
Slave1 Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
Slave2 Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
Slave3 Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
Failure of automatic addressing of valves
Liquid pipe sensor of HR unit open or short
Sub Cooling Pipe In sensor of HR unit open or short
Sub Cooling Pipe Out sensor of HR unit. open or short
Failing to receive HR unit signal at outdoor unit
Test Run
Cause of Error
Installation Manual 119
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