Most common Defects of Refrigerators

Most common Defects of Refrigerators

Thermoregulator defect

Thermoregulator defect1. The refrigerator does not start (it starts to defrost spontaneously), the sound of a running motor-compressor is not audible.
2. The refrigerator does not switch off (runs continuously). In this case the food in the refrigerating chamber is over-cooled (temperature drops below 32 degrees F).

Condenser corrosion

Condenser coils corrosionRepair of the condenser of a refrigerator is required mainly in case of mechanical damage of the condenser, in case of corrosion of the foamed condenser the only way out can be to install a new hinged one, in exceptional cases there are clogging of the condenser grid.

Fan motor defect

Fan motor defect

The fan motor can be installed in the freezing chamber, the refrigerating chamber, for blowing the condenser, if the fan is defective, there may be external mechanical noises, whistling, when the fan fails and stops, the temperature in the chamber rises, the refrigerator can operate without switching off without gaining the set temperature.

Clogging of the filter dryer

the filter dryer

Dehumidifier filter clogging signs:

  • fever in the cooler
  • freezer fever
  • the refrigeration unit operates without switching off
  • hotter first condenser knee, the next one is room temperature

Capillary Assault

Capillary Assault

A common breakage for all models and brands of refrigerators older than 4 years. The freezer is freezing and there is no cold in the cooling chamber. The refrigerator starts to work without switching off, the evaporator of the refrigerating chamber is often covered with a block of ice.

Defective lamps, switches

Defective lamps, switches

How to diagnose a malfunction related to the sanitization fault in the fridge. Without blessing in the refrigerator compartment, you will have difficulty seeing the refrigerator filling. This results in a great inconvenience to its use, especially in the evening. The frequent causes of this malfunction are very simple.

Corrosion of the pipeline, Freon leakage

Corrosion of the pipeline, Freon leakage

The iron or copper pipeline runs along the perimeter of the freezing chamber in the foamy part of the case, in 5-7 years as a result of corrosion there is a leakage of Freon. The defect is mainly found on refrigerators with lower freezing chamber location.

Evaporator puncture

Evaporator puncture

Quite a common problem among refrigerator owners is a puncture of the evaporator of the freezer or refrigerator chamber in the refrigerator. This usually happens through negligence. Many people can damage a refrigerator by chipping away ice or cleaning out ice buildups to noticeably speed up the refrigerator defrosting process.

Door adjustment, gasket problem

Door adjustment, gasket problem

Elevated temperature in the cooling compartment,
the refrigerator operates without switching off, when inspecting the evaporator you can see icing on the evaporator section, where the part of Freon that has passed through the capillary is boiling, the rest of the evaporator is clean, without frost.

Capillary pipeline replacement

Capillary pipeline replacement

Elevated temperature in the cooling compartment, fever in the freezer compartment, the refrigerator operates without switching off, when inspecting the evaporator you can see icing on the evaporator section, where the part of Freon that has passed through the capillary is boiling, the rest of the evaporator is clean, without frost.

The fridge works, but it’s not freezing

The fridge works, but it's not freezing.

Is a fairly common defect. Signs of defect:

  • the fridge does not freeze at all.
  • it’s still cold, but it’s too weak, so the temperature inside is high.

The problem can touch both cameras at once, or it can only occur in one of them. For example, the temperature in the cold room is normal, but it is thawing in the freezer. Or vice versa.

Refill with refrigerant, Freon

Refill with refrigerant, Freon

It’s not a repair. It is made in case of necessity to prolong a refrigerator life for short term from one week to three months. Guarantee in this case is not provided.
There are exceptions. Check with the technician.

Evaporator defect

Evaporator defect

It is necessary to replace the evaporator of the refrigerator if it is impossible to restore the evaporator by means of repair, corrosion of the evaporator, numerous mechanical damages, punctures that usually occur during defrosting of the evaporator.

Defrost system defect

Defrost system defect

Depending on the refrigerator model, the temperature in the refrigerator or freezer compartment rises, the refrigerator can operate without switching off, the evaporator fan can freeze in the ice, and at the initial stage you may hear extraneous noises when the blades hit the ice.

Compressor jamming

Compressor jamming

One of the common defects of a motor-compressor is the jamming of its mechanism. A sign of a defect – the compressor simply humming when it is switched on, then the thermal protection is triggered. The resistance of the winding of the compressor in this case, do not differ from the nominal one.

Pulse valve defect

Pulse valve defect

The main difference between refrigerators and valves is the possibility to control the flow of refrigerant circulating in the refrigeration unit by means of a valve. The chambers of the refrigerator are cooled separately, therefore, it is possible to regulate the temperature in the chambers separately. If the valve defect stops cooling the refrigeration or freezing chamber.

Drainage system clogging

Drainage system clogging

When water appears in or under the fridge, the first thing to do is to see if it works at all. After all, if there is no cooling, it is not surprising that everything in the freezer melted and the unit leaked. The reasons for this may be trivial – accidentally pulled out plug, faulty outlet with poor contacts, clogged drainage system or unplanned power failure.

Engine-compressor failure

Engine-compressor failure

The compressor changes in case of loss of performance (rare defect). Mainly due to an inter-switch short circuit, the motor tries to start, the thermal relay responds and the m/ switch off (at intervals of 10 seconds to 2-3 minutes).

Failure of the starting protection relay

Failure of the starting protection relay

The starting relay for the refrigerator starts the motor of the compressor unit by applying voltage to it. A malfunction of the starting relay can be indicated by reasons such as the motor in the refrigerator starts for a short time and then switches off or does not start at all.

Controller defect (CPU board)

Controller defect (CPU board)

Modern refrigerators are very complex devices. They are equipped with many sensors which are connected to a controller (CPU – processor board). Which then collects all readings from the device and decides in what mode and how the refrigerator should work. If the sensors \ of the controller fail, the internal test will not be passed and the refrigerator will not start or will work incorrectly. To check such modern refrigerators, special programs and service menus are used.