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_TROUBLE SHOOTING GUIDE BOOK __
5.4 Back Up
This function is used when backing up outdoor units or compressors.
■ Setting the function
Function
Back Up SE 4
■ Manual Back Up
This function allows the system to operate in case of inverter compressor failure by backing up com-
pressor manually.
Service can be asked by displaying error to the customer every 6 hours.
•
Option Setting
Option Detail of function
Unit Outdoor unit back up
Inv1 Inverter compressor No.1 back up
Inv2 Inverter compressor No.2 back up
•
Operation Method
1) Check which compressor is broken. (refer to "Trouble Shooting Guide")
2) Turn off the power.
3) Set the dip S/W of defective outdoor unit.
4) Turn on the power.
ex1) Inverter SLAVE1 compressor fail of Slave1 → option "Inv1" selection
* In 1comp model, setting the 'inv2' can not be used.
* If you make a backup of compressor in 1comp model, the outdoor unit is automatically backed up.
· Manual back up function mode is applied after push the main PCB reset button.
· You must set the function of the outdoor unit to be backed up.
· If you want to disable the backup, please set the 'off'.
· This function is a temporary. do not forget to turn this function off after replacing compressor. Long
term use of this function will lead to multiple compressor failures on the system.
LGE Internal
Use Only
■ Manual Back Up
This function is used when backing up outdoor units or compressors.
Back Up
Back Up
■ Setting the function
Function
Back Up SE 4
• Option Setting
• Manual back up function mode is applied after push the main PCB reset button.
• You must set the function of the outdoor unit to be backed up.
• If you want to disable the backup, please set the 'off'.
• This function is a temporary. do not forget to turn this function off after
replacing compressor. Long term use of this function will lead to multiple
compressor failures on the system.
This function allows the system to operate in case of inverter compressor failure by
backing up compressor manually.
Service can be asked by displaying error to the customer every 6 hours.
Option Detail of function
Unit Outdoor unit back up
Inv1 Inverter compressor No.1 back up
Inv2 Inverter compressor No.2 back up
• Operation Method
1) Check which compressor is broken. (refer to “Trouble Shooting Guide”)
2) Turn off the power.
3) Set the dip S/W of defective outdoor unit.
4) Turn on the power.
ex1) Inverter SLAVE1 compressor fail of Slave1 option “Inv1” selection
ex2)
Unit fail of Slave2 option “Unit”
selection
• This function is used with heat pump and heat recovery.
* In 1comp model, setting the 'inv2' can not be used.
* If you make a backup of compressor in 1comp model, the outdoor unit is automatically backed up.
ex2) Unit fail of Slave2 → option "Unit" selection
LGE Internal
Use Only
Back Up
■ Auto Back Up
This function allows the system to operate in case of inverter compressor failure by
backing up compressor automatically.
Service can be asked by displaying error to the customer every 6 hours.
ex) Slave1 unit Inverter compressor 1 start failure error No. 21 occur
• Request service immediately if error occurs.
• Auto back up is set up to 1 inverter compressor.
• If Inverter compressor auto back up starts, error displays for 10 min. every 6 hours.
• Error displays continuously at the corresponding ODU.
■ Auto Back Up
This function allows the system to operate in case of inverter compressor failure by backing up com-
pressor automatically.
Service can be asked by displaying error to the customer every 6 hours.
· Request service immediately if error occurs.
· Auto back up is set up to 1 inverter compressor.
· If Inverter compressor auto back up starts, error displays for 10 min. every 6 hours.
· Error displays continuously at the corresponding ODU.
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