TechPlus ComfortAire - Operation to Return Oil to the Compressor

5. Restriction in drier,
condenser, or high pressure
line
High pressure side will be
high, and low pressure side
will be low.
Evacuate and flush system
replacing defective parts
High pressure side too low
1. Low refrigerant charge The high pressure side will be
low, and bubbles may appear
in the sight glass at the
receiver drier.
Repair any leaks and recharge
the refrigerant to the correct
level.
2. Compressor not pumping Equal high and low pressures Replace the compressor
Operation to Return Oil to the Compressor
1. Open All Doors and windows
2. Turn on A/C fan on high
3. Run Machine at Idle for 20 minutes
55
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APPENDIX
c O m F O r t A i r e A / c s Y s t e m sc c 8 0