Freezer Repair in Plymouth, Devon and Cornwall

01

How it works

Your freezer, properly understood

A freezer relies on a sealed system containing refrigerant, a compressor to pump it, and an evaporator coil to absorb heat from the interior cabinet. In frost-free models, a fan actively circulates the cold air around the drawers and compartments. The main control board or a mechanical thermostat monitors the internal temperature, switching the compressor on and off as needed to maintain a steady, deep freeze. When everything operates correctly, the appliance keeps food safely frozen with minimal effort. Faults develop when these internal components degrade or when airflow becomes restricted. A failed defrost heater, thermostat or timer allows thick ice to smother the evaporator coil, completely preventing cold air from circulating. Compressors can develop internal mechanical faults or electrical starting issues, leaving the cabinet warm while the motor simply hums or clicks. Furthermore, door seals can split or lose their magnetic grip over time. This lets warm, moist room air into the appliance, which rapidly turns into heavy frost and forces the cooling system to run continuously. Finding the exact cause of a cooling failure requires checking both the mechanical and electrical parts. A multimeter is used to test the electrical continuity of defrost heaters, thermostats and temperature sensors. The compressor relays and capacitors are inspected for signs of electrical failure or burning. The door seals and hinges are also checked, because the cabinet has to stay airtight. At All Appliance Care, we diagnose upright and chest freezers in homes across Plymouth and the surrounding areas in Devon and Cornwall.