Sunday, September 20, 2015

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8 Refrigerator Not Cooling Problems and It's Solution / Repair

As refrigerator mechanic," mostly people ask me that her refrigerator not cooling and they take me to his/her home to check refrigerators, There are some main reason and problems of fridge and freezer not working and in this post i am writing about refrigerator not cooling problems and it's solution.

8 Refrigerator not Cooling Problems And It's Solution / Repair


refrigerator not cooling

Test the electrical outlet

Mostly refrigerator stop working and stop cooling due to outlets where we get supply for refrigerator. In simple words every one know that refrigerator works on electric energy and if electric supply is not receiving to the fridge then how can it work. In this problem when we try to start the refrigerator and Ref not starting. The short and simple way to test the outlet voltage, plug in refrigerator shoe  and then check the lamp of refrigerator.
If the lamp is glowing then there is no internal problem in electrical outlet and if its not glowing then test the outlet incoming current using multimeter or other electrical testing devices. You can also test the outlet / socket by plugging in other electrical substance e.g example plug in you mobile charger and see what happen, if your mobile get charging it's means that your outlet is right and have not internal problem.
Also read
How to wire electrical outlets?
How to test voltage using multimeter

Refrigerator is start but not cooling

In some countries the incoming voltage is too low or we can said that low voltage is also a reason or refrigerator not cooling or not working of a refrigerator. In many Cases- refrigerator compressor is start up and then trip. It's means that the incoming voltage is low for refrigerator compressor motor Or other problem in compressor or PTC relay.
Note that the 220 volts compressor not working on 110 - 115 volts supply. If your refrigerator compressor required 220 volts supply and your incoming supply is only 110, then use a step up transformer or a voltage regulator to step up voltage.

Check the thermostat switch


We use the thermostat switch in refrigerator to make an open electric circuit or automatic switch off compressor motor when refrigerator compressor complete his cooling. We use the thermostat switch in series between the compressor and electric supply. Mostly children switch off compressor supply form thermostat switch and we think there is a problem in refrigerator or the it's stop cooling well . Test your thermostat switch do it correct.

Check the PTC Relay and overload Protector


Test your PTC relay and overload protector and if you seen any problem in these devices then change it, if you can not do it himself then call a professional.
Also read
What is Overload Protector and How it works
How a PTC relay Works in refrigerators compressor

Check the supply wire of Refrigerator


If your refrigerator wire have internal damages or open circuit, then this also a big reason of refrigerator not cooling.

Compressor Problem

Check the compressor using ohm meter and find out the problem and if your compressor is burn  or have internal winding problem then change the compressor. Also test the shortage of compressor between compressor terminal and compressor body using connectivity test. The compressor not working is also a Problem of refrigerator not cooling
Also read
How to test identify the compressor terminals

Refrigerant / Gas leak problem

If your refrigerator compressor start properly and it's not cooling. For that problem first of all start the refrigerator and test the condenser pipe which is connected with compressor Hi pressure point if the compressor is start and this pipe is not getting heat then it's means that your refrigerator have no refrigerant gas, and have a leak problem.


Check Cooling FanIn fridge," fan is use for to bring cool air and make ref cool etc. This fan bring the cool air form the avaforator coil and if fan stop working the flow of cooling is stop and refrigerator stop cooling. For this problem solution open the door and push the fan push button switch. This switch is normally open switch and if you push it then it's make a contact between supply and fan. If by pushing the switch the fan start then it's means that fan is all right and have no problem and if it's not working then it's means that the fan is not working. To repair," first of all test the push button switch and if push button switch is working properly then test your fan fuse and if fuse is burned then change and if not the change your fridge fan.

Message:

I hope you learn some thing about freezer not cooling & refrigerator not cooling, and you will about to repair you refrigerator, however there are some other problems of fridge not cooling but we will discus it further on this blog. Always be care full before repairing refrigerators.




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