R-Pro › Field cases › Refrigeration systems
Motor Overload Due to Elevated Condensing Pressure
Likely causes
Condenser fan stopped or insufficient airflow
Check: Check condenser fan operation
What to do: Check condenser fan operation → Clean condenser coil → Measure high-side pressure and compare with spec → If non-condensable gas suspected, recover/re-evacuate/recharge
Poor heat rejection from condenser fouling
Check: Clean condenser coil
What to do: Clean condenser coil → Measure high-side pressure and compare with spec → If non-condensable gas suspected, recover/re-evacuate/recharge
Non-condensable gas in circuit
Check: Measure high-side pressure and compare with spec
What to do: Measure high-side pressure and compare with spec → If non-condensable gas suspected, recover/re-evacuate/recharge
Elevated condensing pressure is overloading the compressor motor. Inspect condenser fan and condenser.
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
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