LG MULTI V IV ARNU07GTU 2 Series Service Manual page 79

Display
Master Outdoor Unit Subcooling Inlet
1
Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Inlet
2
Temperature Sensor Error
1 1 4
Slave2 Outdoor Unit Subcooling Inlet
3
Temperature Sensor Error
Slave3 Outdoor Unit Subcooling Inlet
4
Temperature Sensor Error
Master Outdoor Unit Subcooling Outlet
1
Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Outlet
2
Temperature Sensor Error
1 1 5
Slave2 Outdoor Unit Subcooling Outlet
3
Temperature Sensor Error
Slave3 Outdoor Unit Subcooling Outlet
4
Temperature Sensor Error
Master Outdoor Unit Oil level Sensor
1
Error
Slave 1 Outdoor Unit Oil level Sensor
2
Error
1 1 6
Slave 2 Outdoor Unit Oil levelSensor
3
Error
Slave 3 Outdoor Unit Oil level Sensor
4
Error
Master outdoor unit Main Board -
1
External Board communication error
Slave1 outdoor unit Main Board -
2
External Board communication error
1 4 5
Slave2 outdoor unit Main Board -
3
External Board communication error
Slave3 outdoor unit Main Board -
4
External Board communication error
Failure of operation mode conversion at
1
Master Outdoor Unit
Failure of operation mode conversion at
2
Slave1 Outdoor Unit
1 5 1
Failure of operation mode conversion at
3
Slave2 Outdoor Unit
Failure of operation mode conversion at
4
Slave3 Outdoor Unit
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Only for training and service purposes
Title
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
Slave3 Outdoor Unit Subcooling Outlet 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
Slave3 Outdoor Unit Subcooling Outlet Temperature Sensor
open or short
Master Outdoor Unit Oil level Sensor Error is open or short
Slave 1 Outdoor Unit Oil level Sensor Error is open or short
Slave 2 Outdoor Unit Oil level Sensor Error is open or short
Slave 3 Outdoor Unit Oil level Sensor Error is open or short
Master Outdoor Unit Main Board Main-Sub Micom communi-
cation failed
Slave1 Outdoor Unit Main Board Main-Sub Micom communi-
cation failed
Slave2 Outdoor Unit Main Board Main-Sub Micom communi-
cation failed
Slave3 Outdoor Unit Main Board Main-Sub Micom communi-
cation failed
Pressure unbalance between Outdoor Units
Pressure unbalance between Outdoor Units
Pressure unbalance between Outdoor Units
Pressure unbalance between Outdoor Units
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Self-diagnosis function
Cause of Error
LGE Internal Use Only