When this happens, a common culprit could be an evaporator fan motor. In other words, the refrigerator should be colder inside. If the compressor on the mini fridge is running, the unit can be cool but not where a person would like it. If the Compressor is Running but the Unit is Not Cold Enough In this case, the compressor has gone out.Īs mentioned above, a compressor can easily run upwards of $350 and many not be worth the replacement cost. The final scenario is that the compressor can be very hot and making no sound. Usually, these are not worth replacing as it is one of the most expensive parts of the mini fridge. If the control board goes out, the compressor will not start. These control boards are found on newer models with more user programmable settings. It can help to save power, dial in a specific temperature number, and even do a power cool cycle if the door has been open too long. The control board is like the “brain” of the refrigerator. Newer models of mini fridges have something called a control board. Unfortunately, these can be very pricey and rather difficult to wire in. When the temperature gets above a certain point, the temperature thermostat should be able to sense this and start the compressor. Sometimes the temperature thermostat can fail, and no power will be sent to start the compressor. It is important to remember that if the audible clicks are present, the issue is with the compressor or another part of the sealed system (not the start relay). Luckily, these can usually be purchases for around $30 or less. It would need to be replaced in order to start the compressor. If there are no audible clicks when the mini fridge is plugged in, then chances are the start relay has failed. When a person hears a click on a refrigerator, followed by a motor sound, this means that the start relay has just started the compressor. The start relay is equivalent to the ignition of an automobile.
If a compressor is not running at all, a completely different approach must be taken.
The sealed system described about can generally be easy to diagnose.
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