LG Multi V 5 - Page 122

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_TROUBLE SHOOTING GUIDE BOOK __
1. Close liquid pipe of the unit for pump out operation.
2. Operate pump out.
3. Close 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 Pump System
1. Close liquid pipe of the unit for pump out operation.
2. Operate pump out.
3. Close 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 Pump System
5.3 Vacuum
This function is used for creating vacuum in the system after compressor replacement, ODU parts replace-
ment or IDU addition/replacement.
■ Setting the function
Function Option
Vacuum SE 3 Vacc, oFF
■ Detailed Information
• This function is used with heat pump and heat recovery.
• If the vacuum mode start, ODU valve / ODU & IDU EEV open with "Vacc" display.
• Vacuum mode cancellation method
: Push the reset button on master unit PCB after setting all dip s/w oFF.
* Note : Isolation valves, manual shutoff valves, or 3rd party electronically operated valves, and non -
operating or malfunctioning electronic valves must be opened manually prior to initiating service
setting SE3.
· ODU operation stops during vacuum mode. compressor can't operate.
Basic Part
Multi V 5
Intorduction
Trouble Shooting
Function Control
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