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Refrigerant Recovery in Outdoor Unit
This outdoor unit has check valve and PMV (Pulse Motor Valve)at back and forth of heat exchanger.
So, in some case, heat exchanger will become blockage situation.
In case of changing compressor or cycle parts, refrigerant recovery works are difficult without fully opening of PMV.
After fully opening PMV as following process, recover refrigerant by using recovery device.
[REFERENCE : Outdoor unit refrigerant cycle]
[Work Process ]
This function is provided to fully open the PMV used in the outdoor unit for 2 minutes.
1) Short-circuit CN30 on the interface P.C. board of the outdoor unit.
* After 2 minutes, the opening returns to the normal operation.
2) While short-circuit CN30, after one minute before two minutes, turn off power supply of outdoor unit.
3) Be sure to remove the CN30 short circuit after power supply is turned off.
Check joint
Liquid side
packed valve
Gas side
ball valve
Compressor
(Inverter)
Heat exchanger
PMV
Check valve
The shut circuit
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