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Test Run
Display
number
Slave2 outside unit inverter compressor CT
4 0 3
sensor error
Master outside unit inverter compressor dis-
4 1 1
charge temperature sensor error
Slave1 outside unit inverter compressor dis-
4 1 2
charge temperature sensor error
Slave2 outside unit inverter compressor dis-
4 1 3
charge 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
Master outside unit air temperature sensor
4 4 1
error
Slave1 outside unit air temperature sensor
4 4 2
error
Slave2 outside unit air temperature sensor
4 4 3
error
Master outside unit heat exchange temperature
4 5 1
sensor (A) error
Slave1 outside unit heat exchange temperature
4 5 2
sensor (A) error
Slave2 outside unit heat exchange temperature
4 5 3
sensor (A) error
Master outside unit suction temperature sensor
4 6 1
error
Slave1 outside unit suction temperature sensor
4 6 2
error
Slave2 outside unit suction temperature sensor
4 6 3
error
Master outside unit static speed compressor
4 7 1
discharge temperature sensor error
Slave1 outside unit static speed compressor
4 7 2
discharge temperature sensor error
Slave2 outside unit static speed compressor
4 7 3
discharge temperature sensor error
Master outside unit static speed compressor
4 8 1
discharge temperature sensor error
Slave1 outside unit static speed compressor
4 8 2
discharge temperature sensor error
Slave2 outside unit static speed compressor
4 8 3
discharge 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
Over-capacity (Indoor unit capacity sum is
5 1
-
excessive) connection
Communication error with master outside unit
5 2 1
inverter controller
Communication error with slave1 outside unit
5 2 2
inverter controller
68
Outside Unit
Error item
Root cause of error
Slave2 outside unit inverter compressor current detection (CT) sensor
disconnection or short circuit
Master outside unit inverter compressor discharge temperature sensor
disconnection or short circuit
Slave1 outside unit inverter compressor discharge temperature sensor
disconnection or short circuit
Slave2 outside unit inverter 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 static speed compressor discharge temperature
sensor disconnection or short circuit
Slave1 outside unit static speed compressor discharge temperature
sensor disconnection or short circuit
Slave2 outside unit static speed compressor discharge temperature
sensor disconnection or short circuit
Master outside unit static speed compressor discharge temperature
sensor disconnection or short circuit
Slave1 outside unit static speed compressor discharge temperature
sensor disconnection or short circuit
Slave2 outside unit static speed compressor discharge temperature
sensor disconnection or short circuit
Master outside unit power line phase missing
Slave1 outside unit power line phase missing
Slave2 outside unit power line phase missing
Excessive connection of indoor unit connection display value (Different
from outside unit)
When the inverter controller signal is not received from the master out-
side unit inverter controller
When the inverter controller signal is not received from the slave1 out-
side unit inverter controller
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