R-Pro › Field cases › Refrigeration systems
Short Cycling from Overload Protector Activation
Likely causes
Excessive current (high condensing pressure, voltage imbalance)
Check: Measure compressor surface temperature (overheating if ≥90°C)
What to do: Measure compressor surface temperature (overheating if ≥90°C) → Measure and compare operating current to rated → Measure supply voltage and balance → Check condenser condition → Wait 30 minutes for cooling and auto-reset
Overheating from poor ventilation
Check: Measure and compare operating current to rated
What to do: Measure and compare operating current to rated → Measure supply voltage and balance → Check condenser condition → Wait 30 minutes for cooling and auto-reset
Overload protector itself aged
Check: Measure supply voltage and balance
What to do: Measure supply voltage and balance → Check condenser condition → Wait 30 minutes for cooling and auto-reset
Overload protector is repeatedly tripping. Inspect operating current and the cause of overheating. Do not bypass or remove the overload protector.
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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