P00165
Carrier Transicold
Critical
Can Not Pump Down
The system failed to perform internal vacuum (Pump Down) within the established time.
Possible causes
- Leaking liquid line solenoid valve
- Damaged compressor valve plates
- Excessive refrigerant charge
Recommended actions
- Check liquid solenoids for tight shut-off
- Perform compressor efficiency test
- Check refrigerant and moisture levels
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