Why Your Fridge Freezer Is Warm but the Light Is On – 5 Possible Reasons

Fridge light on but not cooling? Learn 5 common causes and fixes for a warm fridge freezer, plus when to call a professional appliance repair engineer in London.

Introduction

A fridge freezer that has power but isn’t cooling is one of the most worrying appliance problems. While the light is on, your food is at risk of spoiling quickly. In many cases, this fault can be traced to a few common issues. In this article, we’ll cover the 5 most likely reasons your fridge freezer is warm but the light is still on — and what you should do about it.

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1. Blocked Condenser Coils

Dust and dirt can build up on the condenser coils, reducing cooling efficiency.

Quick Fix:

• Unplug the fridge.
• Use a vacuum cleaner or brush to gently clean the coils.

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2. Faulty Evaporator Fan

The evaporator fan circulates cold air inside the fridge. If it fails, cooling stops even though the power is on.

When to Call a Professional:
Fan replacement should be done by a qualified engineer.

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3. Thermostat Problems

A broken thermostat can stop the compressor from running, leaving the fridge warm.

Quick Fix:

• Check if adjusting the temperature dial makes the compressor kick in.
• If not, the thermostat may need replacing.

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4. Defrost System Failure

If the defrost heater or timer fails, ice can block airflow inside the unit.

When to Call a Professional:
This is a technical repair and requires diagnosis from an appliance engineer.

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5. Low Refrigerant (Gas Leak)

If the fridge has lost refrigerant, it won’t cool even though it has power.

When to Call a Professional:
Only a certified engineer can handle refrigerant repairs safely.

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Conclusion

A fridge freezer that’s warm while the light is on can be caused by simple issues like dirty coils, or more complex faults like a fan or gas leak. If cleaning doesn’t solve the problem, it’s best to call an expert quickly to save your food and prevent further damage.

At UK Domestic Appliance, we provide same-day and next-day fridge freezer repairs across London. Our engineers carry common parts and fix most problems on the first visit.