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All brands · Refrigeration troubleshooting

Cycles on overload

What is going on

Possible causes and checks for: cycles on overload.

Likely causes

  • Bad relay
  • Weak overload
  • Low voltage
  • Faulty compressor

Check in this order

  1. Replace relay/overload
  2. Outlet 115 V ±10% under load — check other loads on circuit / long or thin extension cord
  3. Test with known-good cord & ground, then replace compressor

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Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.