Proline Inconsistent Temperature Control

Freezer interior temperature fluctuates widely; some days too warm, other days too cold.

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Intermittent thermostat contacts, Loose NTC sensor connection, Control PCB relay intermittently failing, Poor ventilation causing overheating of condenser

How to Fix / Troubleshooting

Steps to stabilize temperature:

1. Improve ventilation: Ensure adequate clearance around the freezer and clean the condenser.
2. Check power supply stability: Avoid using long extension leads or sharing the socket with heavy-load appliances.
3. Inspect thermostat/sensor wiring: Reseat connectors and look for intermittent breaks.
4. Replace suspect control components: If fluctuations continue, replace the thermostat (mechanical models) or cabinet NTC sensor and, if needed, the main control PCB.

Repair Difficulty

Medium 3/5

Required Part

Thermostat / Main Control PCB

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