Why Is My Mini Fridge Not Getting Cold

Updated on April 23, 2022

Why Is My Mini Fridge Not Getting Cold

Mini fridges, like standard-sized refrigerators, must be inspected to determine if the issue is large or minor.

From minor issues that may be fixed to the refrigerator’s end of life, it’s crucial to get an accurate diagnosis before giving up on it.

The sealed system, a broken compressor, a failed evaporator fan motor, a failed cooling fan motor, or a thermostat might all cause a small fridge to malfunction. Some other possible causes include clogged drier filters or a blockage in the evaporator, start relays, or the control board.

Listening To The Compressor Is The First Step
Step one in troubleshooting a malfunctioning refrigerator is to remove it and listen for any noises coming from the compressor.

As Long As The Compressor Is Active
The compressor compresses the freon and pushes it into the condenser.

There may be a defective seal in the refrigerator’s sealed system if the compressor is functioning.

There are three components in a sealed system: the compressor, the condenser, and the condenser. It is the condenser’s responsibility after a compressor to cool the gas.

If the compressor is operating, it’s possible that a capillary tube connected to the condenser has a little leak, or the condenser itself may be limited.

If The Compressor Is Not Running

In most cases, a sealed system like the one illustrated here is simple to identify. Alternative methods are called for when a compressor is not operating.

Start Relay

In the same way that a car’s ignition works, the start relay does the same. Repeatedly, the compressor is activated.

When a refrigerator’s start relay clicks, followed by a motor sound, this indicates that the compressor has just been started.

If the mini fridge is plugged in and there are no audible clicks, then the start relay has likely failed.

To get the compressor started, a new one would be required. Fortunately, they can generally be purchased for less than $30 at most retailers.

Keep in mind that if you hear clicking noises, the compressor or another sealed system component is to blame (not the start relay).

Temperature Thermostat

There are occasions when the temperature thermostat fails, and the compressor will not start.

As soon as the temperature rises over a specific level, the thermostat should activate the compressor.

It’s a pity that things are so costly and difficult to install.

Control Board

Mini-fridges with a control board are becoming more common. The refrigerator’s “brain” is the control board.

If the door has been left open for an extended period of time, it may perform a power cool cycle to assist save energy.

They can be found in later versions with additional user-programmable options.

The compressor won’t start if the control board fails. As one of the most costly pieces of the mini-fridge, they are usually not worth replacing. They may cost as much as $150 each.


The compressor might also be overheated and silent, which is the worst-case situation. The compressor has failed in this instance.

Compressors may cost upwards of $350, as previously indicated, and may not be worth the money spent on a replacement.

If The Compressor Is Running But The Unit Is Not Cold Enough

Even if the compressor is functioning, the unit may not be as cold as one would want. To put it another way, the temperature inside the refrigerator should be lower.

An evaporator fan motor is a typical cause when this occurs.

Not all small fridges have an evaporator fan motor, therefore it is necessary to keep this in mind. A user should check to determine whether their device has this feature before making a purchase.

Motor for Evaporator Fan
Airflow will be severely restricted or non-existent if evaporator fan motors fail. This may lead to the issue of having cool air, but not frigid air..

The condenser fan motor is another potential source of trouble. Not all refrigerators come equipped with a condenser fan motor, just as not all evaporators do.

It should be investigated to discover whether this problem exists at all.

Faulty fan motor for the condenser.
It would be difficult for the compressor to work effectively if the condenser fan motor (if fitted) malfunctions.

Compressing the freon and delivering it to the condenser are the primary functions of the compressor, as previously stated.

A faulty condenser fan motor will prevent the tiny fridge from cooling as it should if the condenser and compressor are unable to exchange heat effectively.

A Drier Filter with Some Restrictions
It’s possible that a drier filter is to fault for this. The objective of the sealed system’s drier filter is to remove freon and water condensation from the oil used in the compressor.
Compressing the freon and delivering it to the condenser are the primary functions of the compressor, as previously stated.

Due to a faulty condenser fan motor, the tiny fridge will never be as cold as it was planned if it can’t exchange heat with the condenser.

A Drier Filter That Is Partially Restricted
It’s also possible that a drier filter is to cause. Filtration of water condensation and freon from compressor oil is done by a drier filter in the sealed system. YouTube.com is where this image came from.
The freon may not be able to move as fast to chill the refrigerator if the drier filter has a partial limitation.

In Conclusion

The language of a refrigerator or a tiny fridge is the most important item to learn, despite the fact that it is quite hard. A wide variety of components are used, including compressors, condensers, evaporators, and coils. Identifying the pieces of the issue is the first step towards solving it.

Any refrigerator’s compressor may be thought of as its “backbone.” Other components would not function or provide a purpose if gases were not compressed. Also, the compressor of a refrigerator is the loudest portion.

Whether or not the compressor is functioning, it is a good idea to begin the troubleshooting process by listening for compressor noises. Working on a refrigerator when you don’t know what component is what may be difficult and frustrating.

Mini fridges can easily be fixed with a little common sense and basic knowledge of terminology. Whether the machine is still under warranty, contact the manufacturer to determine if it may be repaired or replaced.

If the tiny fridge is no longer covered by the manufacturer’s guarantee, things grow more complex. A excellent place to start troubleshooting is with the help of the instructions provided above.

Look up the cost of the damaged components before you buy them. The cost of replacing some of these items may not be worth it. This is due to the fact that buying a new refrigerator may be more cost-effective than replacing a single component.

It’s also a factor to consider how many model years the fridge has been in production. Parts for an older equipment may no longer be available. The old computer should be appropriately disposed of and replaced with a new one in this situation.

It’s always a good idea to use safety measures while working on a tiny fridge or any other kind of refrigerator. Always disconnect the gadget, and discharge the electricity if necessary. The owner’s handbook normally outlines how to do this.