Published on July 19, 2026 by Vikram Singh, Refrigeration Engineer
When your double-door refrigerator suddenly stops cooling, it's easy to assume the compressor is broken. However, refrigerator circuits have several low-cost components that can fail first. Use this guide to diagnose basic refrigerator errors before scheduling a technician.
If you hear a clicking sound every few minutes from the back of the refrigerator but the compressor fails to start, the PTC start relay is likely burnt out. Relay replacements are quick and affordable.
If the freezer is freezing food but the fresh food compartment below is warm, it means air channels are blocked by ice. This points to a failed defrost timer, heater, or bi-metal sensor.
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