LG Multi V 5 - Page 121

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_TROUBLE SHOOTING GUIDE BOOK __
■ Detailed information
• This function is used with heat pump and heat recovery.
*Note : In systems with short piping systems, the amount of refrigerant that can be pumped from
the outdoor unit may be limited and additional refrigerant storage containers may need to be
used.
· Use pump out function within guaranteed temperature range.
- IDU : 10~32℃ [50~89.6℉] / ODU : 5~40℃ [41~104℉]
· Make certain that IDU doesn't run with thermo off mode during operation.
· 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)
1. Close liquid pipe and low pressure gas pipe of the unit for pump out operation.
2. Operate pump out.
3. Close high pressure gas pipe of unit after completion.
4. End pump out.
5. After replacing the compressor, eliminate remaining refrigerant of corresponding
ODU and perform vacuum work. (with vacuum mode)
6. Add the refrigerant with auto charging function.
LGE Internal
Use Only
■ Example (Slave2 ODU inverter compressor failure)
• For Heat Recovery System
1. Close liquid pipe and low pressure gas pipe of the unit for pump out operation.
2. Operate pump out.
3. Close high pressure gas pipe of unit after completion.
4. End pump out.
5. After replacing the compressor, eliminate remaining refrigerant of corresponding
ODU and perform vacuum work. (with vacuum mode)
6. Add the refrigerant with auto charging function.
Pump Out
■ Example (Slave2 ODU inverter compressor failure)
• For Heat Recovery System
Basic Part
Multi V 5
Intorduction
Trouble Shooting
Function Control
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