LG Multi V Water IV ARNU07GTU 2 Series Service Manual page 57

Display
Master outside unit inverter compressor DC
1
link under-voltage
Slave1 outside unit inverter compressor DC
2
link under-voltage
2 3
Slave2 outside unit inverter compressor DC
3
link under-voltage
Slave3 outside unit inverter compressor DC
4
link under-voltage
1
Master outside unit high pressure switch
2 Slave1 outside unit high pressure switch
2 4
3
Slave2 outside unit high pressure switch
4 Slave3 outside unit high pressure switch
Master outside unit input voltage over-volt-
1
age/under-voltage
Slave1 outside unit input voltage over-volt-
2
age/under-voltage
2 5
Slave2 outside unit input voltage over-volt-
3
age/under-voltage
Slave3 outside unit input voltage over-volt-
4
age/under-voltage
Master outside unit inverter compressor
1
operation failure error
Slave1 outside unit inverter compressor
2
operation failure error
2 6
Slave2 outside unit inverter compressor
3
operation failure error
Slave3 outside unit inverter compressor
4
operation failure error
Master outside unit inverter DC link over-
1
voltage error
Slave1 outside unit inverter DC link over-
2
voltage error
2 8
Slave2 outside unit inverter DC link over-
3
voltage error
Slave3 outside unit inverter DC link over-
4
voltage error
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Title
DC voltage is not charged after master outside unit operating
relay is turned on
DC voltage is not charged after Slave1 outside unit operating
relay is turned on
DC voltage is not charged after Slave2 outside unit operating
relay is turned on
DC voltage is not charged after Slave3 outside unit operating
relay is turned on
Compressor maintenance by master outside unit high pressure
switch Flow rate insufficiency or flow switch trouble of master
outside unit
Compressor maintenance by Slave1 outside unit high pressure
switch Flow rate insufficiency or flow switch trouble of master
outside unit
Compressor maintenance by Slave2 outside unit high pressure
switch Flow rate insufficiency or flow switch trouble of master
outside unit
Compressor maintenance by Slave3 outside unit high pressure
switch Flow rate insufficiency or flow switch trouble of master
outside unit
Master outside unit input voltage over-voltage or under-voltage
Slave1 outside unit input voltage over-voltage or under-voltage
Slave2 outside unit input voltage over-voltage or under-voltage
Slave3 outside unit input voltage over-voltage or under-voltage
Initial operation failure due to master outside unit inverter com-
pressor error
Initial operation failure due to Slave1 outside unit inverter com-
pressor error
Initial operation failure due to Slave2 outside unit inverter com-
pressor error
Initial operation failure due to Slave3 outside unit inverter com-
pressor error
Compressor turned Off due to master outside unit inverter DC
voltage over-charge
Compressor turned Off due to Slave1 outside unit inverter DC
voltage over-charge
Compressor turned Off due to Slave2 outside unit inverter DC
voltage over-charge
Compressor turned Off due to Slave3 outside unit inverter DC
voltage over-charge
- 57 -
Self-diagnosis function
Cause of Error
LGE Internal Use Only