7 common reasons why air conditioners are not cool and consume a lot of electricity
(Baonghean.vn) - Your air conditioner is running normally, but one day it suddenly becomes less cold or loses its coolness, even though it has been turned on for a long time but it is still not cool at all? When the air conditioner encounters this situation, you should fix it soon, if left for a long time, the machine will be seriously damaged and the repair cost will increase.
Below are the reasons why the air conditioner is not cool and how to fix it you can refer to.
1. The air conditioner is not cool because it is too dirty.
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If the air conditioner is operated for a long time without maintenance, dust will accumulate, preventing cool air from being blown out. This is also a common cause, making the air conditioner, although operating at full capacity, still very hot in the room.
In addition, dirty air conditioners also make the air conditioner consume much more electricity than usual.
You can still clean the air conditioner yourself by:
Cleaning the condenser:Use a small pressure pump to spray water into the radiator slots to remove dirt and insects.
Cleaning the condenser:DUse a pressure pump to spray water directly onto the evaporator, slowly spray onto the evaporator and evaporator fan until all dirt is gone;Clean the air filter sThen shake dry and reinstall.
2. Air conditioner is low on gas or out of gas
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Signs that the air conditioner is low on or out of gas are:poor cooling or no cooling;Operating current is lower than the rated current written on the machine;The gas suction pressure to the compressor is lower than the normal working pressure (normally 65-75psi). The pressure on the high pressure side is also lower than normal.
In particular, some types of air conditioners will automatically turn off after about 5-10 minutes and display an error on the condenser when there is not enough gas for the machine to operate.
Air conditioners lose gas due to pipe leaks, leaks at joints, connectors or due to long-term use without maintenance.
To fix this situation, you need a skilled air conditioner repairman with specialized pipe inspection equipment, making sure the pipe is not leaking after repair and refilling the air conditioner with gas.
3. Block not running
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When the block (compressor) is not running, the air conditioner will not be cold. Causeof this condition due to:
Loss of power supply to the compressor due to a hole in the control board, the contactor does not close, open circuit.
Thermic jump protects the compressor often due to damaged capacitor, weak or damaged condenser fan, compressor motor not rotating.
One of the internal motor windings burned out.
In this situation, you need to call an air conditioner repairman to fix the situation.
4. Damaged capacitors, circuit boards
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A damaged capacitor or circuit board will turn the air conditioner into a normal fan. Common causes: The air conditioner is overloaded; the air conditioner is maintained at a temperature that is too low (below 20 degrees Celsius) continuously for too long.
How to fix:Contact the maintenance center to replace the capacitor, circuit board; to minimize damage to the capacitor, the air conditioner should only be maintained at a temperature of 25 - 27 degrees Celsius. Regularly clean the circuit board to promptly prevent insects from nesting and causing a short circuit on the circuit board. When cleaning, turn off the power to ensure safety for the user.
5. The evaporator is leaking water.
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The evaporator shell is frosted, the wind blows out in the form of mist or water drops, the evaporator is frozen.
The evaporator is frozen because the evaporator fan does not rotate or rotates slowly. The fan should be repaired immediately or it may lead to damage to the compressor (block).
The evaporator blows out water droplets because the evaporator is too dirty. In some cases, it is due to a manufacturer error, these evaporators have some gaps that are too large, so the fan sucks the water droplets out.
6. Install the air conditioner on the hottest wall in the room
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The hottest part of the wall is where the sun shines directly on it, causing the wall temperature to be high. Many people install the air conditioner in this position, which is a mistake.
When you install the air conditioner in a hot wall, before cooling the air in the room, the air conditioner must cool the wall first - this is both wasteful of electricity and not very effective.
Therefore, you need to choose cool wall corners when installing to cool the room quickly and most effectively.
7. Electrical overload
In the summer, the high demand for electricity in households often causes overload in many areas. Weak and unstable power sources cause the engine to overheat, have poor cooling capacity or stop working.
Therefore, on hot days, you should use an additional voltage stabilizer to stabilize the power supply to the air conditioner, ensuring that the machine always operates well to promptly meet the cooling needs of the family./.