Why isn’t your Bosch Freezer Staying Cold?

This guide will cover every Bosch freezer.

Common Reasons why your Bosch Freezer isn’t Staying Cold

If you are frustrated because your Bosch freezer isn’t staying cold like it should then you can find out why using the below tips:

·        Dirty condenser coils

·        Your evaporator fan motor is broken

·        Your start relay is burnt out

·        Your coils are frosted over

·        Your thermostat is malfunctioning

Dirty Condenser Coils

If the condenser coils are within the freezer walls then the coils do not require cleaning. If you can see or access the coils from behind or from underneath the unit then you need to clean them every year if possible. If your coils are dirty, then they won’t be able to dissipate the heat properly and this will significantly reduce the cooling capacity of your freezer overall. This may be why you’re having issues like “ice maker not working” too.

Your Evaporator Fan Motor is Broken

The evaporator motor in the freezer will draw the air over the coils and then circulate it throughout the freezer. If you are concerned because you don’t think that your fan is working, then you should know that the fan will not work if the freezer door is open. If you want to check your fan then open the freezer door and then manually activate the door switch for the freezer. If it is activated but the fan won’t run then you need to replace the motor.

Your Start Relay is Burnt Out

The start relay will provide power to the compressor and replacing it is a very easy freezer repair. If you don’t think that your start relay is operating as it should then you may find that your compressor runs intermittently or that it doesn’t work at all. The freezer will not cool if this is the case. If you want to find out if your relay is defective or not, then unplug the freezer and remove the relay. You can then test the start relay between the run and start terminals.

Your Coils are Frosted Over

This is the most common reason why your freezer might not be staying cold. The defrost heater will turn on several times throughout the day and it melts away any frost that might have built up over time. If your defrost heater isn’t turning on then frost will carry on building up on the coils and they will frost over. You need to use a multi meter to find out if the heater is working. If it isn’t, then look into a replacement.

Your Main Control Board is Faulty

Control boards are quite often misdiagnosed. Before you even think about replacing this, you need to check to see if there are defective parts. If you have come to the conclusion that none of your parts are faulty then you will need to replace the main control board.

Your Thermostat is Malfunctioning

The temperature-controlled thermostat will direct voltage to your compressor, your evaporator motor, and your fan motor. If your thermostat doesn’t look to be working, then your fridge/freezer system won’t be getting any power and this will stop your freezer from cooling. If you want to find out if your thermostat is defective then rotate it from the lowest setting, all the way to the highest setting. If you hear a click then your thermostat is fine. If you want to access your thermostat then you need to take off the control knob. You can do this with ease by using a screwdriver to lever it off. There, you will see the shaft of the thermostat which will require some plyers to loosen the nut. Remove the top cover of the thermostat.

If you push the thermostat out of the casing, then you will see the connections. If you want some help fitting your new thermostat then make sure that you take a photo so you can see where the connections go. Once you have removed the connections, the next thing to do would be for you to remove the capillary from the wall of the fridge. You need to make sure that this comes out freely. Unwind the thermostat capillary before placing the sleeve over it. When you have done this, feed it back to the fridge and then reconnect the thermostat. Place the thermostat in the hole and then screw the nut onto the shaft so that it can then be held in place. Put back any cables, and attach everything as it was.  This freezer/refrigerator repair is very easy to do and it could be the reason why you’re having issues like “refrigerator not cooling”.


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