Zanussi fridge freezer making a loud humming noise
Bought a Zanussi fridge freezer a couple of years ago and there's a loud humming/buzzing coming from the back that won't stop. What should I check first?
1 Answer
A constant loud hum or buzz from the back is often either normal vibration made worse by positioning, or the compressor/fan working harder than it should. The first thing is to narrow down exactly what is making the noise.
1. Check if it is touching anything Pull the fridge freezer slightly forward and make sure the back pipes, compressor area, or cabinet are not vibrating against the wall, skirting board, or kitchen units. Also check the drip tray above the compressor if fitted, as these can buzz.
2. Make sure it is level and stable Uneven feet can make a normal compressor hum sound much louder. Adjust the front feet so the appliance is firm on the floor and not rocking.
3. Listen for when the noise happens If the noise is continuous, it may be the compressor. If it comes and goes, it could be linked to cooling cycles or possibly a fan motor. Open the freezer door and then the fridge door in turn to see if the sound changes. On some models an internal fan can be heard more clearly.
4. Check for overworking If the doors are not sealing properly, or if the condenser area is dusty, the appliance may run longer and hum more. Check door seals and clean any accessible ventilation grilles.
5. Look for signs of a fault If the cabinet is not cooling properly, the compressor is very hot, or you hear clicking as well as humming, that points more towards a developing compressor, relay, or fan issue.
Always isolate the appliance from the mains before inspecting any internal parts. If the noise is clearly from the compressor, electrics, or any sealed refrigeration components, it is best handled by a qualified engineer.
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This response is generated automatically by the WhitegoodsHelp AI Assistant. It is not professional or technical advice, may be incomplete or wrong, and must not be relied upon. Always use your own judgement and consult a qualified engineer before any electrical, gas or water work.
This is general information only and is not professional advice. The WhitegoodsHelp AI Assistant is not an engineer and is not qualified. See our full Terms of Use.
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