LG MULTI V IV ARNU12GTU 2 Series User Manual

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Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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4.2 Emergency operation
- If a compressor is out of order, the system can be run except the defective compressor by backup function.
n Automatic emergency operation(automatic back up function)
If outdoor unit detect comp defect during operation,, automatic back up mode is set.
1) Inverter 1 compressor automatic emergency operation.
2) Inverter 2 compressor automatic emergency operation.
n Manual emergency operation(Manual back up function)
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.
SLAVE1
Inverter
compressor
fail of Slave1
INV1 INV2 INV1
INV2
INV1 INV2
Unit fail of
Slave2
INV1 INV2 INV1 INV2 INV1 INV2
Backup mode cancellation method
Select the Action using ‘ ’, ‘ ’ Button : : “off”
Push the ‘
’ button
SLAVE1 unit PCB DIP switch on : No.5
Select the mode using ‘ ’, ‘ ’ Button : “SVC”
Push the ‘
’ button
Select the Function using ‘ ’, ‘ ’ Button : : “Se4”
Push the ‘
’ button
Select the Option using ‘ ’, ‘ ’ Button : : “inv1”
Push the ‘
’ button
Select the Action using ‘ ’, ‘ ’ Button : : “on”
Push the ‘
’ button
SLAVE2 unit PCB DIP switch on : No.5
Select the mode using ‘ ’, ‘ ’ Button : “SVC”
Push the ‘
’ button
Select the Function using ‘ ’, ‘ ’ Button : : “Se4”
Push the ‘
’ button
Select the Option using ‘ ’, ‘ ’ Button : : “unit”
Push the ‘
’ button
Select the Action using ‘ ’, ‘ ’ Button : : “on”
Push the ‘
’ button
MASTER SLAVE1 SLAVE2
MASTER SLAVE2
CAUTION
Emergency operation with inverter compressor failure should not last 48 hours. ‘ It causes other
compressor failure.
During the emergency operation, cooling/heating capacity may be lower.
Function

LG MULTI V IV ARNU12GTU 2 Series Specifications

General

Brand	LG
Model	MULTI V IV ARNU12GTU 2 Series
Category	Air Conditioner
Language	English