4hw.com.cn: what is the fault of Midea air conditioner F4? If this code appears in your air conditioner, it means that your air conditioner should be cleaned. Let's see what the F4 code means.
What does Midea air conditioner show F4? What to do if air conditioner fails
What is the fault of Midea air conditioner F4
Midea air conditioner shows that F4 is anti freezing protection for air conditioner refrigeration, that is to say, the temperature of the evaporator of the internal unit is too low, which results in ice formation. In order to prevent ice formation of the internal unit, the air conditioner sets anti freezing protection.
The cause of F4 failure of Midea air conditioner
1. The sensor line is broken, which may be caused by abrasion of the line or biting by rats, especially the air conditioner in hotels and restaurants.
2. The failure of cleaning the internal unit for a long time resulted in the dust accumulation and blockage of the filter screen, which resulted in the failure of the cooling air of the air conditioner to be blown out in time, resulting in the protection of the internal unit due to the low temperature.
3. The reduction of the capacity of the internal fan results in the low speed of the internal fan and the failure of the air conditioner to be blown out in time.
4. The evaporator of the internal unit is too dirty, so the evaporator cannot be ventilated.
How to clean Midea air conditioner
1. Clean the filter screen
First, disassemble the external unit of the air conditioner, then take out the internal filter screen, and clean the filter screen with a vacuum cleaner. If it is too dirty, it can be washed with clean water. If there is too much dust, it can be washed with a neutral detergent. Do not use an acid or alkaline detergent. After cleaning, dry it. Do not expose it in the sun or dry it. After drying, install the air conditioner.
2. Clean the evaporator
There is a special cleaning agent for cleaning the evaporator. Do not use the detergent sold in the supermarket. It is recommended to buy a special air conditioner evaporator in a special shop. Before cleaning, turn on the air conditioner for refrigeration for 15 minutes. This is that there will be condensation water on the evaporator in the air conditioner. If there is heavy dust on the fins of the evaporator, use a fine soft brush to clean it first, and then spray the air conditioner for cleaning Agent, wait for 5 minutes and then scrub the stain with a soft cloth.
3. Clean the inner surface of air conditioner
When cleaning the surface of the external unit, first cut off the power supply of the air conditioner, preferably pull out the plug, and then use a wet cloth to wipe the surface of the air conditioner, especially the top of the air conditioner, where the dust is the most, and then use a dry cloth to wipe again after wiping.