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ELECTRICAL WIRING
88
Display
Master Outdoor Unit Heat Exchanger
1
Temperature Sensor (upper part) Fault
Slave1 Outdoor Unit Heat Exchanger
2
Temperature Sensor (upper part) Fault
1 5 3
Slave2 Outdoor Unit Heat Exchanger
3
Temperature Sensor (upper part) Fault
Slave3 Outdoor Unit Heat Exchanger
4
Temperature Sensor (upper part) Fault
Master Outdoor Unit Heat Exchanger
1
Temperature Sensor (lower part) Fault
Slave1 Outdoor Unit Heat Exchanger
2
Temperature Sensor (lower part) Fault
1 5 4
Slave2 Outdoor Unit Heat Exchanger
3
Temperature Sensor (lower part) Fault
Slave3 Outdoor Unit Heat Exchanger
4
Temperature Sensor (lower part) Fault
Master outdoor unit External Board
1
Main-Sub Micom communication Error
Slave1 outdoor unit External Board
2
Main-Sub Micom communication Error
1 8 2
Slave2 outdoor unit External Board
3
Main-Sub Micom communication Error
Slave3 outdoor unit External Board
4
Main-Sub Micom communication Error
Master Outdoor Unit Fan Heatsink High
1
Temperature
Slave1 Outdoor Unit Fan Heatsink High
2
Temperature
1 9 3
Slave2 Outdoor Unit Fan Heatsink High
3
Temperature
Slave3 Outdoor Unit Fan Heatsink High
4
Temperature
Master Outdoor Unit Fan Heatsink
1
Temperature Sensor Fault
Slave1 Outdoor Unit Fan Heatsink Tem-
2
perature Sensor Fault
1 9 4
Slave2 Outdoor Unit Fan Heatsink Tem-
3
perature Sensor Fault
Slave3 Outdoor Unit Fan Heatsink Tem-
4
perature Sensor Fault
Title
Master Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Slave1 Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Slave2 Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Slave3 Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Master Outdoor Unit Heat Exchanger Temperature
Sensor(lower part) open or short
Slave1 Outdoor Unit Heat Exchanger Temperature
Sensor (lower part) open or short
Slave2 Outdoor Unit Heat Exchanger Temperature
Sensor(lower part) open or short
Slave3 Outdoor Unit Heat Exchanger Temperature
Sensor(lower part) open or short
Master Outdoor Unit Main Board Main-Sub Micom
communication failed
Slave1 Outdoor Unit Main Board Main-Sub Micom
communication failed
Slave2 Outdoor Unit Main Board Main-Sub Micom
communication failed
Slave3 Outdoor Unit Main Board Main-Sub Micom
communication failed
System is turned off by Master Outdoor Unit Fan
Heatsink High Temperature
System is turned off by Slave1 Outdoor Unit Fan
Heatsink High Temperature
System is turned off by Slave2 Outdoor Unit Fan
Heatsink High Temperature
System is turned off by Slave3 Outdoor Unit Fan
Heatsink High Temperature
Master Outdoor Unit Fan Heatsink Temperature Sen-
sor open or short
Slave1 Outdoor Unit Fan Heatsink Temperature Sen-
sor open or short
Slave2 Outdoor Unit Fan Heatsink Temperature Sen-
sor open or short
Slave3 Outdoor Unit Fan Heatsink Temperature Sen-
sor open or short
Cause of Error
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