Greetings dear friends, I am writing to present a problem that I am presented with a whirlpool digital nofrost fridge with Freezer above and conservative below. This refrigerator first had a clogged capillary problem which was fixed. Then the electronic card was damaged by not getting it, I decided to make it manual or analog. But a week later the client calls me and tells me that I was not cooling him and making a loud noise. When I went to check it out, it turned out that it was blocked by ice and the ice reached the compressor's return pipe. And the noise was produced by the friction of the fan blade with the excess ice, I even found it stuck in the ice and the engine forcing. It is worth mentioning that I tested the defrosting system and the bimetallic closes contacts when the temperature drops and the resistance acts, the question I have is the following. When changing the electrical system, remove the thermal fuse of the resistor that goes in series with the bimetallic and replace the bimetallic, which originally had an L15-21C. And I put an L47 - 22F. My question is whether those changes mentioned are causing me the problem? Or I check something else. I thank you for your help if you need more information let me know. Thanks and regards

Hi. You say the defrost system works. How did you check? Which I doubt then the bimetallic that you put -22f is -39 centigrade. However test the system 1 move the evaporator so that you can see or feel the resistance 2 disconnect the fan 3 start the equipment for about 40 minutes to make ice on evaporator 4 put amperometric clamp on the line 5 Turn off the compressor and set the timer to defrost 6 Here the clamp has to give you consumption, it can be 0.4 to 0.8 7 see if he turned on the resistance. If you do not see it, try feeling your surroundings to see if you feel hot, if it does not give you heat or consumption, the defrosting system is not working Before putting it on, put a thermal fuse That symptom seems more excess gas making return. Check the working pressure Also check if the compressor is stopping by thermostat.