Red alarm light on chest freezer8/15/2023 ![]() If your fridge-freezer has digital controls on the front, this is much more difficult to fix and worth calling a professional to give you a quote. But it's probably not a job for a complete novice, as determining it's actually a broken thermostat causing the problem takes a bit of know-how. Replacing a thermostat is straightforward enough - replacement parts cost from around £30 and you'll only need a few home DIY tools. The thermostat is broken The problem could also lie with the thermostat behind the temperature dial in your fridge.Is the fridge overfilled? Jam-packed shelves prevent cool air from circulating around the interior of the fridge, which could leave your food too warm.Can the door close properly? Check for obstructions and damage around the hinges and seal that could be letting in warm air.Has the thermostat dial been adjusted? Some thermostat dials can shift with the slightest of nudges, so check it hasn't been accidentally moved to a warmer setting.The door is not sealing correctly, ensure the cabinet is level and the gasket seals are clean.Assuming you've set it up properly (it's level, not too close to heat sources, and has enough ventilation space all around) and the ambient room temperature is within the range of the appliance's climate class, run through these checks to see if they help solve the problem.Four hours are required for the freezer to cool down completely. The freezer has recently been disconnected for a period of time. Check freezer has the correct clearances – see instruction manual.The temperature control is not set correct – see instruction manual.The door has been opened for period of time or is opened often.A large amount of food has been added to the freezer.The room temperature is hotter than normal.Check that the temperature control is set correctly.The circuit breaker has tripped or there is a blown fuse.This will be more noticeable during start up and hot ambient conditions. It is normal for the side and rear of the freezer to feel warm/hot while operating. In normal operation, the freezer transfers heat from inside to outside of the cabinet. Temperature on the outside and rear side of the freezer is hot/warm Re-level the freezer and move it from the wall. Check the floor underneath the freezer sturdy and level.Door is kept open too long or opened too frequently.Weather is hot and humid, which increases internal rate of frost build-up.Condensation may condense on the exterior surface during hot/humid days. Condensation may condense during hot and humid days or depending on the place of installation.Door is slightly open, causing cold air from inside the freezer to meet warm moist air from outside.Refrigerant is circulating throughout the system. Metal parts are expanding and contracting – this sound is normal. ![]() Temperature inside the freezer is too cold The seals on these units are designed to be taken in and out for cleaning so it may need to be re-positioned.
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