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Refrigerators

Mabe "Nofrost" refrigerator compressor works for short times

angeljmnz
hace 5 años
hace 5 años
Good day: I have this detail with a Mabe "Nofrost" refrigerator with two electronic card doors, when connected to the electric current the compressor enters normal work, after 35 minutes stops, it reaches a temperature of 3 ° C in the freezer part and 14 ° C in the storage part, after 20 minutes the compressor enters again for another 35 minutes so this cycle takes place and does not reach the freezing and storage temperature. to the card I disconnected the sensor from the freezer, then I worked for 45 minutes and the defrost resistance was stopped and the evaporator was only frosty, the compressor temperature (case) reached 35 ° C. In my opinion it is the electronic card I would like to read your opinions, what is the temperature that a compressor reaches in full work, thanks I hope you have some time to help me.
willyguillermo
hace 5 años

See if the forcer works if it works, it will probably lack refrigerant due to a leak in the circuit.

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angeljmnz
hace 5 años

Good afternoon willyguillermo, the forger I imagine you mean the condenser if it works heats up normal but if the temperature varies a little in the upper part with respect to the lower one

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davidefrainrod
hace 5 años

willyguillermo refers to the fan not the condenser

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willyguillermo
hace 5 años

The freezer forger is the one who sends cold to the bottom and also to the freezer.

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angeljmnz
hace 5 años

GOOD AFTERNOON THE FAN IF IT WORKS WELL IT IS COMING TO YOU ENOUGH CURRENT DO NOT DETECT ANY PROBLEM

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davidefrainrod
hace 5 años
hace 5 años
Hello angel, for what you say it seems that it is working in emergency mode you can start measuring the sensors its value in khoms according to the temperature they have in a glass of water and ice according to the corresponding table if one is short or outdated replace but also check everything else as fan resistance thermal fuse resistance (before going to buy board) check if when closing door activates fan. Check wiring sockets contacts in platelet are not sulfated check continuity in sensor cables. Discard problems with the compressor by taking the value of the starter and work coils. Discard this not to ground. Check relay and thermal. Check consumption of motor amperes and check if the entire evaporator freezes you especially where the sensors go or only a part, if you don't reach 35 minutes connect direct compressor to 220 and let walk (do not remove the thermal). I think I do not forget anything if after all this you do not find anything you can happen to think that the platelet fails. You can also take a plate to be checked by an electronic technician. Best of luck.
davidefrainrod
hace 5 años

As the colleague says, the refrigerant may be missing or the compressor may be worn out or some problem, so I advise to take winding and relay and thermal measurements and leave it on to observe that the evaporator is full of frost and rule out possible gas loss or plugging in the refrigerant circuit capillary filter etc.

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angeljmnz
hace 5 años

Good afternoon davidefrainrod I already made the measurements to the windings as you told me and they are fine it is not grounded or landed as we say here, the relay and thermal do not check them there if I have a little doubt on how to check if they are in optimal conditions , measured the resistance and if it marks, the fan actually works with the door open does not cut when opening it, the electronic card visually does not look burned or sulphated

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davidefrainrod
hace 5 años

To check relay and thermal only measure if they have continuity. It is rare that the fan and the open door can happen that if you just plug the refrigerator is doing self-test and does not deactivate the fan even if you open the door, I will tell you again for the exact start and stop time (35min) it is in emergency mode and you will have to check the sensors and if it has a network switch on the stand that divides up from below you will have to pass a magnet and see if it activates or deactivates the light and the fan

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davidefrainrod
hace 5 años

The red switch are hidden and are the ones that activate light and fan would be the same as the light knob but hidden since they are activated with magnetism of the weatherstrip. Again, check if the compressor is running full of frost or ice, especially the evaporator.

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willyguillermo
hace 5 años

I believe that in 35 min you have to frost the entire evaporator, control the hair and dryer filter.

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angeljmnz
hace 5 años

good afternoon willy the filter if I have not checked it tomorrow I will check the temperature it has and like the capillary

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willyguillermo
hace 5 años
hace 5 años
It lacks refrigerant due to some leakage in the circuit.
angeljmnz
hace 5 años

I already performed a vacuum for 30 minutes and I had it under observation for 4 hours and there was no variation, I charged refrigerant by design asking me 120 gr. I put almost 150 gr and the consumption was 3.2 Amp according to what the data sheet specifies is within the range

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willyguillermo
hace 5 años

and the consumption is very high so check capillary and filter change it

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rubensiño
rubensiño
22.830
hace 5 años
hace 5 años
Check if the lucky evaporator completely freezes
angeljmnz
hace 5 años

the evaporator does not reach to frost all its surface only 1/3 is what frosts for the time it works that is about 35 minutes for another 20 rest so the temperature in the freezer fluctuates in the 3 ° to 8 ° C

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davidefrainrod
hace 5 años

Connect a separate cable to the compressor, disconnect the relay and thermal cable and connect a direct one, run it longer and watch if it freezes all evaporators

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willyguillermo
hace 5 años

if the consumption is high and you disconnect the thermal you can burn the mc

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angeljmnz
hace 5 años

True I will connect it directly but controlling the consumption and temperature of the compressor to avoid damage

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davidefrainrod
hace 5 años

When I say a separate cable to the compressor, I mean using the refrigerator but leaving thermal and relay in place what you discard with this test is to see if it freezes the entire evaporator because there are refrigerators that detect little cold, suppose as an example for lack of gas and enters in emergency.

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angeljmnz
hace 5 años
hace 5 años
Good afternoon. Partners that recommend me, I am thinking of converting it from digital to manual or analog to avoid the electronic card, do you think it is advisable?
davidefrainrod
hace 5 años

If it can be transformed but you must evaluate costs because you will need a timerdefrost, automatic ambient temperature, bimetal, and you will have to diagram the wiring for the analog connection and see how you use the existing wiring you should look at the fan at 220 volts, you should also know if not have other problems but it won't work either

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