6 common reasons why air conditioners blow hot air
(Baonghean.vn) - During use, air conditioners often encounter problems such as the machine running too noisy, cooling poorly, leaking water, etc. Among them, the air conditioner blowing out hot air is a fairly common problem. So, what is the cause, how to deal with this "disease"?
1. Wrong fan mode selected
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The air conditioner suddenly blows out hot air, while the cold air goes somewhere unknown - the cause could be due to mistakenly selecting the fan only mode.
On the air conditioner remote control, there are usually modes such as Dry (dehumidification), Cool (cooling), and Fan (Fan). Normally, to cool the room, you must always use Cool mode, but if you accidentally choose Fan mode, the air conditioner will only emit hot air or only the fan will operate.
In this case, the solution is very simple, just use the remote control to switch the mode from Fan Cool and the air conditioner will blow out cool air immediately.
2. The filter is too dirty
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The air conditioner only blows out hot air, possibly because the evaporator filter is too dirty; the cold air cannot escape but sticks to the pipe and forms ice.
To solve this problem, remove the filter and clean it carefully, then turn on the machine in fan mode to let the ice melt. When the ice is completely melted, the machine will operate and blow out cold air as usual. In case the filter is too old, it needs to be replaced.
One thing to note is that when using the air conditioner, remember to clean it periodically to avoid the situation where the air conditioner only blows out hot air and not cold air as mentioned above.
3. Damaged engine block
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The compressor is considered the "heart" of the air conditioner. Therefore, when the compressor is damaged, the air exchange process stops, leaving only the evaporator fan to rotate and blow out hot air.
There are many signs to detect a damaged engine block, such as the machine making noise, unstable temperature, hot steam emitted, and the condenser continuously shutting off.
4. Machine "young" gas
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During the use of air conditioner, the amount of gas lost will cause the cooling capacity of the air conditioner to decrease accordingly; when the gas runs out, the machine will no longer blow out cold air.
Normally, the air conditioner will hardly run out of gas, except in cases of gas leak.
So, when the air conditioner blows out hot air, you should call an air conditioner technician to check if there is a gas leak and fix it.
5. Machine fuse is broken
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Long-term use,The fuse on the filters may have come loose, you need to unplug it and check if the fuse is still working. The fuse of the machine is a small silver plate located inside the machine. If it is not working, you need to replace it with a new one.
6. Frozen gas pipes
If your air conditioner is blowing hot air, it could be a malfunctioning part of the unit. Open the cold block and use a flashlight to check inside. Touch the air ducts with your finger, if they feel cold, they are frozen.
In this situation, you should turn on the machine in fan mode to melt the ice, combined with opening the window (or room door) to let in fresh air, helping the ice in the pipe melt faster.