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Not all refrigerators are equipped with the No Frost system, and dripping ice in the freezer does not surprise anyone, because it is defrosted manually. But what if this problem arose in modern models? You need to find the cause of the problem and fix it. In the article we have collected all the possible options.
Why does ice form in the freezer
If the No Frost defrost system is installed in the Samsung, Bosch, Ariston or other brands refrigerator and a snow coat freezes in the freezer, it is not necessarily a breakdown. You may be using the device incorrectly.
- Look at the control panel. Have you set the mode to “Super Freeze”? In electromechanical models, it is turned off manually. The compressor will continue to pump cold until you cancel the setting.
- Check temperature controller. The temperature in the chamber should be from -17 to -19 degrees. Otherwise, the compartment will be very cold, snow may form under the freezer, and the motor will wear out. Adjust thermostat. Even if the room is too hot, do not set a low temperature – when the technique is chosen correctly, it will reach the desired performance itself.
Minor problems include wear on the seal on the door. Warm air penetrates into the cracks, the performance in the department increases. The compressor works with a double load, pumping cold, so snow freezes on the walls.
If the door is not closed tightly, or the seal is leaking, a red light may flash on the panel or a signal may sound.
Tires need to be replaced. Perhaps it does not adhere well to the body, because it is clogged. You can wash it with warm water and soap, and wipe it with ammonia.
Sagging hinges also lead to a loose door seal. Then most of the ice will collect on the edge, near the freezer door. You can tighten the loops yourself.
Flashing of the red indicator occurs after the camera is loaded. If you put a lot of warm food in the compartment, wait until the temperature has recovered.
What malfunctions require repair
Frost in the compartment may indicate a breakdown. Be careful and you will be able to find the problem.
Drainage hole clogged
Snow accumulates at the bottom of the freezer. There may be water in the refrigerator with No Frost at the bottom under the drawers. After turning off the motor for rest, the evaporator heating element is turned on and the ice is defrosted. All moisture flows into the drainage hole and is removed from the system. The drain could be clogged with small debris, crumbs. It needs to be cleaned up.
On some models, the opening is located behind a panel that must be removed first.
You can clean the hole with a thin wire or a syringe with water.
Defective exhaust system
At the same time, the back wall is covered with a snow coat and ice. Failure of any component of the evaporator – heater, timer, fuse – leads to a lack of defrost. Therefore, the evaporator is covered with snow. The channel, which is responsible for the supply of cold, also freezes, so the temperature in the department begins to rise. You may notice that the compressor turns off less and less.
It is necessary to inspect, diagnose the parts of the evaporator. This will require special equipment, so it is better to contact the master.
Temperature sensor failure
The compressor rarely turns off “to rest”. The walls of the freezer compartment are overgrown with ice and snow if there is a separate thermostat or compressor. If there is one control for both chambers, then ice may also form on the back wall of the refrigerator.
When the temperature sensor breaks, the control board does not know what the temperature is in the chamber. Therefore, it gives the command to the motor to pump the cold more.
The temperature sensor needs to be replaced. Additionally, a fault code may appear on the display. To check the sensor for serviceability, you must completely defrost the refrigerator. Diagnostics is carried out with a multimeter. The resistance should be 4,7 kOhm.
Refrigerant leak
The continuous operation of the compressor leads to frost on the evaporator. However, the temperature is still too high and does not reach the set level. If you perform defrosting, the refrigerator may stop turning on.
A constant leak of refrigerant in the evaporator leads to ice build-up and non-stop operation of the motor. After all the gas has evaporated, both chambers will stop working. Therefore, you need to find the cause and location of the leak. The master will deal with this best, he will repair the damaged area and refuel the system with freon gas.
If you notice that frost is growing in your refrigerator with No Frost, sound the alarm, this is not normal. Try to defrost it yourself and check the above details, or contact the service center.