You hear your refrigerator is working as usual, but when you open the door, there is a light, though you feel that it’s not cold enough inside. Quite often there are situations when the fridge is working but not freezing. In this case, you should not rush to call a repairman, because perhaps the cause of the breakage is not as complicated as it may seem.
What are the possible reasons?
Let’s see now how to diagnose the refrigerator by ourselves, and also consider the most frequently met reasons why the refrigerator does not freeze, but the main compartment continues to work.
Before starting the self-test of the refrigeration unit, make sure that it is connected to the mains and that the doors are tightly closed. If all these conditions are met, it is possible to start the diagnostics of the equipment, which includes the following actions:
- Check the “Defrost” button, especially if it is located inside the refrigerating chamber. It often happens that the user accidentally presses the button, thereby activating the defrost function.
- Examine the gasket on the refrigerator door. It is possible that this element in the refrigerator compartment is simply torn, damaged, or has lost its former flexibility. The gasket must be replaced. This is often the case in units that have been in service for more than a year.
- Often the unit does not cool down due to a faulty sensor. This can be checked by switching the temperature control.
- Take your hand to the motor which is in the bottom recess of the equipment. If it is very hot, it is likely that the thermal protection of the motor has been activated due to the overheating of the refrigerator. It is necessary to switch off the equipment and move it a little away from the wall. If after some time, when the fridge has cooled down completely, everything has started to work properly when you turn it on — the only problem was that the engine did not cool down in time.
- You have to measure the voltage on the motor with a multimeter. If it is missing, the problem was that the refrigerator thermoregulator failed.
In this way, it is possible to identify and eliminate common minor malfunctions in the self-diagnosis. However, if, after these actions, the refrigerator still does not freeze — the reasons may be more serious.
Possible malfunctions of the fridge
In addition to minor possible causes, more complex equipment failures can also be detected on their own.
First, you must determine whether the cold is not coming into the freezer and fridge or only into the plus-side compartment. If the fridge has one compressor, the cold is fed into the freezer, the plus compartment works on the residual principle. A refrigerator with two compressors should be considered as two insulated systems by the heat transfer medium.
It is most difficult to understand the single compressor two-door combined refrigerator with two adjustable cold zones. It is necessary to check, whether the generator produces cold and in what quantity. For example, in a refrigerator, Indesit can be diagnosed as freezing but not freezing due to a magnetic bypass valve failure. When the flap is filled, all cold is directed only to the freezer, no cold air is brought into the plus chamber.
The refrigerator is completely defrosted to determine the cause. After drying, it is switched on. If cold is not pumped into the freezing chamber of the fridge and the engine is running but not freezing – there is no refrigerant in the system.
Before refueling, the master must find the place of leakage, check the circuit for tightness, remove air and gas residue from it. A clear sign of a leak in the frozen part will be a bloating of the wall of one of the chambers.
Freon leakage from the system is quite often the cause of freezer failure. This con-firms the long-term operation of the motor and the presence of cold condensation on it. Evaporation of Freon can occur due to micro-cracks in the evaporator. This often occurs after a frozen product is pulled off the wall together with the ice, and also after strong vibrations during prolonged operation of the unit. CFC leakage can also be caused by broken tubes that go to the evaporator from the compressor, e.g. as a result of moving machinery. It is difficult to determine the place of CFC leakage by yourself, as well as to do after soldering and gas injection.
If the equipment is not cold, clogged capillaries feeding the refrigerant can also be the cause. In these situations, it is also necessary to seek specialist assistance, because without certain equipment it will not be possible to sell the system.
If you have experience with electrical appliances, you can try to repair the refrigerator yourself.
The equipment is never insured against breakdowns. If you notice that the refrig-erator motor is running but not freezing, you should examine the condition without turning the machine off. Check if the condenser is warm — the grid on the back of the compressor. If it is in the foam part, make sure the circuit near the door is warm.
The compressor itself heats up during operation, but the hand should be able to withstand contact for 10 seconds without burning. Listen to whether the engine switches off or runs without stopping for over an hour. Whether the noise of the en-gine has changed, or whether the stop is accompanied by a knock — all this should be described to the master if diagnosis and repair are required.
Check the position of the thermoregulator, it may have been set to 0 by accident. Turn clockwise, add cold, and vice versa. The stable operation of the refrigerator depends on the climatic class of the device. If the class N in the room should be 16-35 0 C. For other classes, refer to instructions.
It is possible that a lot of ice has accumulated inside the fridge and heat dissipation is impaired. Check whether the door leaf closes – it is often the source of icing. The two causes are faulty sealing and misalignment of the door. You can fix it yourself. The house may have been out of light for a long time and the food may have melted down. It will take hours to restore the temperature in the chamber.