LG Multi V Water IV ARNU07GTU 2 Series Service Manual page 59

Display
Master Outside unit Communication error
1 between Master outside unit PFC and
inverter board
Slave1 Outside unit Communication error
2
between Slave1 outside unit PFC and
inverter board
3 9
Slave2 Outside unit Communication error
3
between Slave2 outside unit PFC and
inverter board
Slave3 Outside unit Communication error
4
between Slave3 outside unit PFC and
inverter board
Master outside unit inverter compressor CT
1
sensor error
Slave1 outside unit inverter compressor CT
2
sensor error
4 0
Slave2 outside unit inverter compressor CT
3
sensor error
Slave3 outside unit inverter compressor CT
4
sensor error
Master outside unit inverter compressor dis-
1
charge temperature sensor error
Slave1 outside unit inverter compressor dis-
2
charge temperature sensor error
4 1
Slave2 outside unit inverter compressor dis-
3
charge temperature sensor error
Slave3 outside unit inverter compressor dis-
4
charge temperature sensor error
Master Outdoor Unit Low Pressure Sensor
1
Fault
Slave1 Outdoor Unit Low Pressure Sensor
2
Fault
4 2
Slave2 Outdoor Unit Low Pressure Sensor
3
Fault
Slave3 Outdoor Unit Low Pressure Sensor
4
Fault
Master Outdoor Unit High Pressure Sensor
1
Fault
Slave1 Outdoor Unit High Pressure Sensor
2
Fault
4 3
Slave2 Outdoor Unit High Pressure Sensor
3
Fault
Slave3 Outdoor Unit High Pressure Sensor
4
Fault
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Title
Master Outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Slave1 Outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Slave2 Outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Slave3 Outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Master outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Slave1 outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Slave2 outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
Slave3 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
Slave3 outside unit inverter compressor discharge temperature
sensor disconnection or short circuit
Master Outdoor Unit Low Pressure Sensor open or short
Slave1 Outdoor Unit Low Pressure Sensor open or short
Slave2 Outdoor Unit Low Pressure Sensor open or short
Slave3 Outdoor Unit Low Pressure Sensor open or short
Master Outside Unit High Pressure Sensor open or short
Slave1 Outside Unit High Pressure Sensor open or short
Slave2 Outside Unit High Pressure Sensor open or short
Slave3 Outside Unit High Pressure Sensor open or short
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Self-diagnosis function
Cause of Error
LGE Internal Use Only