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70 Outside Unit
Test Run
Display
Error item Root cause of error
number
Slave1 outside unit Variable speed compressor current detection (CT)
sensor disconnection or short circuit
Slave2 outside unit Variable speed compressor current detection (CT)
sensor disconnection or short circuit
Master outside unit Variable speed compressor discharge temperature
sensor disconnection or short circuit
Slave1 outside unit Variable speed compressor discharge temperature
sensor disconnection or short circuit
Slave2 outside unit Variable speed compressor discharge temperature
sensor disconnection or short circuit
Master outside unit under-voltage sensor disconnection or short circuit
Slave1 outside unit under-voltage sensor disconnection or short circuit
Slave2 outside unit under-voltage sensor disconnection or short circuit
Master outside unit over-voltage sensor disconnection or short circuit
Slave1 outside unit over-voltage sensor disconnection or short circuit
Slave2 outside unit over-voltage sensor disconnection or short circuit
Master outside unit air temperature sensor disconnection or short cir-
cuit
Slave1 outside unit air temperature sensor disconnection or short cir-
cuit
Slave2 outside unit air temperature sensor disconnection or short cir-
cuit
Master outside unit heat exchange temperature sensor (A) disconnec-
tion or short circuit
Slave1 outside unit heat exchange temperature sensor (A) disconnec-
tion or short circuit
Slave2 outside unit heat exchange temperature sensor (A) disconnec-
tion or short circuit
Master outside unit suction temperature sensor disconnection or short
circuit
Slave1 outside unit suction temperature sensor disconnection or short
circuit
Slave2 outside unit suction temperature sensor disconnection or short
circuit
Master outside unit Fixed speed compressor discharge temperature
sensor disconnection or short circuit
Slave1 outside unit Fixed speed compressor discharge temperature
sensor disconnection or short circuit
Slave2 outside unit Fixed speed compressor discharge temperature
sensor disconnection or short circuit
Master outside unit Plate type heat exchanger temperature sensor dis-
connection or short circuit
Slave1 outside unit Plate type heat exchanger temperature sensor dis-
connection or short circuit
Slave2 outside unit Plate type heat exchanger temperature sensor dis-
connection or short circuit
Master outside unit Plate type heat exchanger temperature sensor dis-
connection or short circuit
Slave1 outside unit Plate type heat exchanger temperature sensor dis-
connection or short circuit
Slave2 outside unit Plate type heat exchanger temperature sensor dis-
connection or short circuit
Master outside unit power line phase missing
Slave1 outside unit power line phase missing
Slave2 outside unit power line phase missing
4 0 2
Slave1 outside unit Variable speed compressor
CT sensor error
4 0 3
Slave2 outside unit Variable speed compressor
CT sensor error
4 1 1
Master outside unit Variable speed compressor
discharge temperature sensor error
4
1 2
Slave1 outside unit Variable speed compressor
discharge temperature sensor error
4
1 3
Slave2 outside unit Variable speed compressor
discharge temperature sensor error
4 2 1 Master outside unit under-voltage sensor error
4 2 2 Slave1 outside unit under-voltage sensor error
4 2 3 Slave2 outside unit under-voltage sensor error
4 3 1 Master outside unit over-voltage sensor error
4 3 2 Slave1 outside unit over-voltage sensor error
4 3 3 Slave2 outside unit over-voltage sensor error
4 4 1
Master outside unit air temperature sensor
error
4 4 2
Slave1 outside unit air temperature sensor
error
4 4 3
Slave2 outside unit air temperature sensor
error
4 5 1
Master outside unit heat exchange temperature
sensor (A) error
4 5 2
Slave1 outside unit heat exchange temperature
sensor (A) error
4 5 3
Slave2 outside unit heat exchange temperature
sensor (A) error
4 6 1
Master outside unit suction temperature sensor
error
4 6 2
Slave1 outside unit suction temperature sensor
error
4 6 3
Slave2 outside unit suction temperature sensor
error
4 7 1
Master outside unit Fixed speed compressor
discharge temperature sensor error
4 7 2
Slave1 outside unit Fixed speed compressor
discharge temperature sensor error
4 7 3
Slave2 outside unit Fixed speed compressor
discharge temperature sensor error
4 8 1
Master outside unit Plate type heat exchanger
temperature sensor error
4 8 2
Slave1 outside unit Plate type heat exchanger
temperature sensor error
4 8 3
Slave2 outside unit Plate type heat exchanger
temperature sensor error
4 9 1
Master outside unit IGBT temperature sensor
error
4 9 2
Slave1 outside unit IGBT temperature sensor
error
4 9 3
Slave2 outside unit IGBT temperature sensor
error
5 0 1 Master outside unit 3 phase power missing
5 0 2 Slave1 outside unit 3 phase power missing
5 0 3 Slave2 outside unit 3 phase power missing
Outside unit
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