What is the frosting of air conditioning refrigeration unit?

1. Air conditioning refrigerant is insufficient or excessive.

For air conditioners, if the refrigerant is insufficient, it may be that the evaporator pressure is too low, thus freezing. Just add enough refrigerant to it at this time. If there is too much refrigerant in the air conditioner, it may also cause the air conditioner to freeze. Because too much refrigerant may flow to the evaporator of the air conditioner, causing it to freeze.

Solution: Ask professionals to deal with fluorine leakage in air conditioners.

2, air compressor failure.

If the compressor is used for a long time, it may be damaged or its power may be reduced, which may cause the air conditioner to freeze.

Solution: Add refrigerant to the compressor to see if it can be solved. If it is not handled properly, only the air conditioner compressor can be replaced.

4. Air-conditioning thermostat failure: Air-conditioning thermostat failure will also cause air-conditioning to freeze.

Solution: Replace the air conditioner thermostat.

Maintenance of air conditioner:

1. Remove the sundries in the vent to ensure normal ventilation. Observe whether the outdoor rack is loose, and clean the outdoor ventilation net cover for foreign objects. At the same time, keep the vents open.

2. Clean the surfaces of indoor and outdoor heat exchangers to improve the efficiency of heat exchangers. When cleaning the indoor heat exchanger, carefully remove the panel, scrub it with a soft rag, and gently scrub the heat exchanger of the indoor unit with a small brush to remove the harmful accumulation of dust and breeding bacteria. However, it should be noted that the heat sink is very thin aluminum, which is easy to deform after being stressed, so brush it carefully.

3. Remove the dust from the filter screen. When cleaning the filter screen, cut off the power supply first, and then open the air intake grille; Take out the filter screen, clean the filter screen with water or vacuum cleaner, the water temperature should not exceed 40 degrees, clean it with hot wet cloth or neutral detergent, and then wipe it with dry cloth. At the same time, it is not allowed to clean the filter screen with pesticides or other chemical cleaners.

4. Remove dirt and deposits from the drainage part. The drainage part is easy to deposit dirt, so it must be disinfected thoroughly on a regular basis to ensure smooth drainage and prevent bacterial reproduction.

5. Check others. Comprise a power cord, a plug board and a switch; Check the status of consumable parts, such as air deflector, sterilization and dehumidification, photocatalyst, etc. , to ensure that the air conditioner is in good condition.

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