Pump Out - LG MULTI V IV ARNU07GTU 2 Series Service Manual

Function

4.11 Pump Out

This function gathers the refrigerant to other ODU and IDU.
Use this function in case of compressor failure, ODU parts defect, leakage.
Close liquid SVC V/V of each unit.
Open gas SVC V/V of each unit.
Power reset after Dip switch setting of ODU
Refer to Dip switch setting page
(General case, Inv. Comp failure case)
Press the red button (SW01C)
All IDU heating operation
Satisfy low pressure target?
Note 2)
Low pressure > 229kpa
Power reset after Dip switch off
[Note]
If low pressure become under 307kPa (blink), close the gas SVC V/V of all ODU immediately.
If low pressure descends below 229 kPa, the system turns off automatically. Close gas SVC V/V immediately.
This function is operating only Heat Pump model.
Caution
1.Use pump out function within guaranteed temperature range
IDU : 10~30°C
ODU : 5~40°C
2. Make certain that IDU doesn't run with thermo off mode during operation
3. Pump out function takes 2~5 min. after compressor start.
Make certain that IDU doesn't run with thermo off mode during operation
(in case low pressure doesn't go down)
Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Yes
*Current low
Pump out completed
pressure
Press the red button
(SW01C)
IDU, ODU OFF
*Current low
pressure
No
Note 1)
*Current low pressure
under 307kPa (blink)
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ODU SVC V/V Setting
Close
Liquid Pipe Gas Pipe
ODU SVC V/V Setting
Close Close
Liquid Pipe Gas Pipe
LGE Internal Use Only
Open