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Communication Error Between Master
1
Outdoor Unit and Other Outdoor Unit
Communication Error Between Slave1
1
0
4
2
Outdoor Unit and Other Outdoor Unit
Communication Error Between Slave2
3
Outdoor Unit and Other Outdoor Unit
Master Outdoor Unit Fan PCB
1
Communication Error
Slave1 Outdoor Unit Fan PCB
1
0
5
2
Communication Error
Slave2 Outdoor Unit Fan PCB
3
Communication Error
1
Master Outdoor Unit FAN IPM Fault Error
Slave1 Outdoor Unit FAN IPM Fault Error
1
0
6
2
3
Slave2 Outdoor Unit FAN IPM Fault Error
Master Outdoor Unit Fan DC Link Low
1
Voltage Error
Slave1 Outdoor Unit Fan DC Link Low
1
0
7
2
Voltage Error
Slave2 Outdoor Unit Fan DC Link Low
3
Voltage Error
Master Outdoor Unit Liquid pipe
1
Temperature Sensor Error
Slave1 Outdoor Unit Liquid pipe
1
1
3
2
Temperature Sensor Error
Slave2 Outdoor Unit Liquid pipe
3
Temperature Sensor Error
Master Outdoor Unit Subcooling Inlet
1
Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Inlet
1
1
4
2
Temperature Sensor Error
Slave2 Outdoor Unit Subcooling Inlet
3
Temperature Sensor Error
Master Outdoor Unit Subcooling Outlet
1
Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Outlet
1
1
5
2
Temperature Sensor Error
Slave2 Outdoor Unit Subcooling Outlet
3
Temperature Sensor Error
Failure of operation mode conversion at
1
Master Outdoor Unit
Failure of operation mode conversion at
1
5
1
2
Slave1 Outdoor Unit
Failure of operation mode conversion at
3
Slave2 Outdoor Unit
Master Outdoor Unit Constant Speed
1
Compressor Fault
Slave1 Outdoor Unit Constant Speed
1
7
3
2
Compressor Fault
Slave2 Outdoor Unit Constant Speed
3
Compressor Fault
Title
Failing to receive Slave Unit signal at main PCB of Master Outdoor
Unit
Failing to receive master and other Slave Unit signal at main PCB of
Slave1 Outdoor Unit
Failing to receive master and other Slave Unit signal at main PCB of
Slave2 Outdoor Unit
Failing to receive fan signal at main PCB of master unit.
Failing to receive fan signal at main PCB of Slave1 unit.
Failing to receive fan signal at main PCB of Slave2 unit.
Instant Over Current at Master Outdoor Unit Fan IPM
Instant Over Current at Slave1 Outdoor Unit Fan IPM
Instant Over Current at Slave2 Outdoor Unit Fan IPM
Master Outdoor Unit Fan DC Link Input Voltage is under 380V
Slave1 Outdoor Unit Fan DC Link Input Voltage is under 380V
Slave2 Outdoor Unit Fan DC Link Input Voltage is under 380V
Liquid pipe temperature sensor of Master Outdoor Unit is open or
short
Liquid pipe temperature sensor of slave1 Outdoor Unit is open or
short
Liquid pipe temperature sensor of slave2 Outdoor Unit is open or
short
Master Outdoor Unit Subcooling Inlet Temperature Sensor open or
short
Slave1 Outdoor Unit Subcooling Inlet Temperature Sensor open or
short
Slave2 Outdoor Unit Subcooling Inlet Temperature Sensor open or
short
Master Outdoor Unit Subcooling Outlet Temperature Sensor open or
short
Slave1 Outdoor Unit Subcooling Outlet Temperature Sensor open or
short
Slave2 Outdoor Unit Subcooling Outlet Temperature Sensor open or
short
Pressure unbalance between Outdoor Units
Pressure unbalance between Outdoor Units
Pressure unbalance between Outdoor Units
Comp locking, Check Valve leakage, comp dielectric break down at
Master Outdoor Unit
Comp locking, Check Valve leakage, comp dielectric at Slave1
Outdoor Unit
Comp locking, Check Valve leakage, comp dielectric at Slave2
Outdoor Unit
Cause of Error
Installation Manual 87
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