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INSTALLATION OF UNIT
38
Display
Communication Error between Master
and Slave (For 20/23/25RT Only)
1 0 4 2
1 Master Fan PCB Communication Error
1 0 5
Slave Fan PCB Communication
2
Error (For 20/23/25RT Only)
1 Master FAN IPM Fault Error
1 0 6
Slave FAN IPM Fault Error (For
2
20/23/25RT Only)
1 Master Fan DC Link Low Voltage Error
1 0 7
Slave Fan DC Link Low Voltage
2
Error (For 20/23/25RT Only)
1 Eva inlet pipe Temperature Sensor Error
1 1 3
Eva inlet pipe Temperature Sensor Error
2
(For 20/23/25RT Only)
Eva outlet pipe Temperature Sensor
1
Error
1 1 5
Eva outlet pipe Temperature Sensor
2
Error (For 20/23/25RT Only)
Failure of operation mode conversion at
1
Master
1 5 1
Failure of operation mode conversion at
2
Slave (For 20/23/25RT Only)
Master Constant Speed Compressor
1
Fault
1 7 3
Slave Constant Speed Compressor Fault
2
(For 20/23/25RT Only)
Master Main PCB Main-Sub Micom
1
communication error
1 8 2
Slave Main PCB Main-Sub Micom
2
communication error (For
20/23/25RT Only)
Excessive increase of Master Fan PCB
1
Heat Sink Temperature
1 9 3
Excessive increase of Slave Fan
2
PCB Heat Sink Temperature (For
20/23/25RT Only)
Master Fan PCB Heat Sink Temperature
1
Sensor Error
1 9 4
Slave Fan PCB Heat Sink
2
Temperature Sensor Error (For
20/23/25RT Only)
Title
Failing to receive Slave signal at main PCB of
Master
Failing to receive fan signal at main PCB of unit.
Failing to receive fan signal at main PCB of unit.
Instant Over Current at Master Fan IPM
Instant Over Current at Slave Fan IPM
Master Fan DC Link Input Voltage is abnormal
Slave Fan DC Link Input Voltage is abnormal
Eva inlet pipe temperature sensor of Master is open or
short
Eva inlet pipe temperature sensor of Master is open or
short
Eva outlet pipe Temperature Sensor open or short
Eva outlet pipe Temperature Sensor open or short
Pressure unbalance between Masters
Pressure unbalance between Slaves
Comp locking, Check Valve leakage, comp dielectric
break down at Master
Comp locking, Check Valve leakage, comp dielectric
break down at Slave
Master Main PCB Main-Sub Micom communication
failed
Slave Main PCB Main-Sub Micom communication
failed
Master Fan Inverter PCB Temperature is Over 95°C
Slave Fan Inverter PCB Temperature is Over 95°C
Master Fan PCB Heat Sink Temperature Sensor open or
short
Slave Fan PCB Heat Sink Temperature Sensor
open or short
Cause of Error
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