If a thermostat is faulty it will show one of the following symptoms: 1) The thermostat does not switch on, the light inside (if fitted and the bulb has not failed) will light up but the motor will not try to start. 2) The fridge will not switch off, the motor runs continuously and everything is freezing solid inside.
A weak thermostat will fail to monitor the temperature in your fridge. So, even if the temperature goes up, it cannot signal the compressor to start again so that cooling can take place as it should. Thus, inappropriate cooling is a sign that there might be a problem with the thermostat.
Short Cycling: A malfunctioning thermostat might cause the compressor to turn on and off rapidly (short cycling). This not only stresses the compressor but can also lead to increased wear and tear, ultimately causing failure.
A refrigerator without a thermostat or temperature control will not work properly. Either the two wires that go to the control are not connected (in which case the compressor will not run at all) or the wires are connected together (which 'bypasses' the thermostat and the compressor will not shut off).
Its primary role is to maintain a consistent and ideal temperature, preventing food spoilage and optimal energy efficiency. The typical thermostat lifespan ranges from 5-10 years, though this can vary based on usage and maintenance.
Thermostat. Having the fridge thermostat repaired will cost between $100 and $440. The thermostat is responsible for monitoring the temperature of a refrigerator and making adjustments if it gets too hot or cold. If your fridge is warm but your freezer is cold, this is probably due to a malfunctioning thermostat.
Start by gently levering the control knob off the thermostat shaft, and undoing any nuts holding the shaft in place. Then remove any other screws that are holding the assembly onto the wall. The assembly should then be loose, enabling you to gently slide or lift it from the wall.
Unplug the refrigerator from the power outlet, wait for a few minutes, and then plug it back in. This can help reset the system and potentially resolve any temporary issues. Check for obstructions: Ensure that there are no items blocking the vents in the freezer compartment.
How to Set the Temperature. Locate the dial which is situated at the top, or in the middle of the fridge or freezer section. Note: This dial controls both the fridge and freezer temperatures.
A bad thermostat can be detected when your AC or furnace is not turning on, your HVAC systems are not turning off, the thermostat not responding, your HVAC system is short-cycling, the room temperature not matching the temperature displayed on the thermostat, and the programmed setting resetting themselves.
Reset your refrigerator: First, unplug it (or turn off the power at the circuit breaker), and then wait about five minutes for the electrical charge to clear out of it. Then, power it back on again.
A malfunctioning defrost timer can lead to the development of ice on the evaporator coils, which will cause poor airflow through them and overheating in the refrigerator section. Incorrect defrost timers will have a timer plunger that only moves partway or doesn't move at all during the defrost cycle.
If you can hear the compressor running but the fridge isn't cooling, the problem is most likely either frost-clogged evaporator coils or a stuck or broken evaporator fan. Evaporator fans often squeal or chirp when they start to go bad.
The first thing you should do is check if the power supply to your refrigerator is working properly. Make sure that none of the plugs or wiring are loose or damaged, and check that the power outlet is still functional. If everything looks fine on that front, then it could be a problem with the refrigerator itself.
Your refrigerator's thermostat is its brain for temperature control. It senses the inside temperature of your fridge and tells the compressor when to switch on and off. A thermostat malfunction means your fridge is sailing without a captain, potentially leading to food spoilage or an unexpected ice rink inside!
Appliances do not have a reset button on them - to reset any appliance you UNPLUG the unit from the outlet for 3 minutes - plug back in - or turn off breaker to outlet and appliance for that long - then turn back on. That will reset the control computer board and reset the appliance.
Technically, a fridge can run sans a thermostat, as it is just an on and off switch for the compressor. Thus, when the temperature reaches the point that is preset. Generally, it goes off 2 to 3 degrees below that point.
While replacing a thermostat is a manageable DIY project for many, there are situations where professional help is invaluable.