Main problems of air conditioner

Hot days and cold days boil down to one thing: Adaptation . We remember not only in the summer that the workplace, buildings or home should be air-conditioned, but also during the winter.

The fact is that air conditioning is so important in our time that without it we cannot even concentrate.

Do you know what the most common problems with air conditioners are? How do you review it? Can you fix it yourself or is it better to contact a professional?

In this post you can read

How do we check our air conditioner?

If we suspect our air conditioner might have some kind of defect, before conducting a thorough inspection, we should take a series of steps. Safety measures :

• Turn off the power and unplug the device. To avoid any harm.
• Do not get wet Neither the indoor nor the outdoor unit should be cleaned. A damp cloth is sufficient.
• To be more specific, in Clean engines It is recommended to use a soft, dry cloth or a cloth slightly dampened with water.

If we consider that the problem might be It's not cooling down . We check the windows and doors, that the appliance is running, and that the filters are in perfect sanitary condition.

If this solution doesn't work, We continue with the analysis.

Main problems of air conditioner

An air conditioner without proper maintenance can cause long-term problems that we cannot always solve without the help of a specialist.

To be able, at the very least, to identify what the problem might be, we will list The most common defects :

• Gas-free equipment Due to a leak or insufficient charge.
• Water flow noise During operation.
• The compressor is not heating up. In this case, what the air conditioner owner notices is that the device has stopped cooling.
• The unit is not working.
• The compressor won't start. This is noticed because the compressor does not make any sound, or the electrical current does not reach the compressor or is insufficient.
• Incorrect electrical connections. This is usually due to common problems such as a cable that does not fit properly in the plug or a poor condition of the pipe.
• The compressor failed.
• The device is not cooling down. As we said, it is a very common mistake.
• The compressor is faulty.
• Incorrect connection.
• Unspecified heat protectant.
• Water is dripping from the front panel.
• A faulty thermostat or temperature sensor.
• Circuit size (amperage) problems
• Flash gas in the liquid line.
• Inadequate pipe design. This may be due to a high vertical height.
• The device is switched on and off repeatedly.
• Contamination in the system . Moisture in the system can be caused by various factors.
• Power element failure or load loss.
• Low condensing pressure. For air-cooled condensing units, this occurs when the pressure control system is faulty or poorly adjusted.
• The unit is not working. This could be due to it not being fully connected, a circuit breaker failing, or, as a major error, the fuse being blown.
• Coolant or excess oil.
• Excessive oil buildup in the evaporator.

All these problems can arise when we have an air conditioner, especially if we don't take proper care of it.

Solutions to the main problems of air conditioners

Once we know what the main problems are, and know that most of them need a file An expert in repairing them , let's see what the solutions could be for each of them:

1. Gas running out in the equipment due to a leak or failure to recharge.

When the air conditioner gas-free Regarding a potential leak, we must first check if there is indeed one. Once the location is identified, we begin recharging the gas.

If the problem is not related to a leak but to a lack of recharging, the process is reduced to simply recharging the gas.

2. Water flow noise during operation.

It seems This is usually caused by the compressor or evaporator. However, this doesn't necessarily mean the appliance is faulty; it simply means we made a poor choice in purchasing a non-silent model.

3. The compressor is not heating up.

The fact that the air isn't cooling immediately points to a compressor problem. The solution comes from Locating the potential leak Weld the opening that's causing the gas leak. Then we need to recharge it to prevent future problems.

4. The unit is not working.

When it doesn't work Loneliness is usually caused by neglect. The tests we should perform are:

• Check the current situation
• Check the connection
• Check the protection circuit is working
• Check the device's voltage.

In addition, to make sure everything is correct, the installer must later check that the device is working.

5. The compressor does not start.

When the compressor fails to start, there are a variety of reasons and solutions. Among them, we can find:

• We check that the device is connected to the correct electrical current and voltage. The error may originate from this.
• We look at the condition of the cable. If the cable is faulty, that could be the problem.
• Check the thermostat.
• Check the defrost timer.
• The motor needs to be running so that it is worthwhile to check it.
• Check the condition and specifications of the compressor relay, start-up capacitor, and running capacitor.

6. Incorrect electrical connections.

We contact a technician, who will disconnect the cables and perform the installation correctly. This way, we can ensure it is installed properly.

7. Compressor failure.

When there is a compressor malfunction, there may be various reasons, and to resolve them we can do the following:

• Check the high and low nanometer pressures of the system.
• Another possibility is that the compressor is not the right choice for the machine. In such a case, the technician should examine the machine's specifications and find a suitable one.

8. The device is not cooling.

When equipment fails to cool down, this usually occurs in most cases. Due to poor hygiene in the filters.

To clean the filters, they should be slowly removed from the device and washed with plenty of soapy water. Afterward, leave them in a cool place to prevent warping or bending.

If there is a large amount of dust, this process will have to By repetition Several times as necessary to keep them clean.

After removing the filters, do not touch the fin of the indoor unit to avoid physical damage.

And of course, The unit should never be cleaned with abrasive products!

9. A defect in the compressor.

If the compressor is faulty, the solution is to check the coil resistance against the manufacturer’s specifications and the ground insulation.

If the problem is very serious, you may have to consider changing it.

10. Low stress or unhealthy stress levels.

When we have doubts about the voltage of our equipment, the best solution is to incorporate a voltage regulator.

11. Inappropriate contact.

We must check the connections according to Electrical diagram . If we notice an error, we can notify a technician to resolve it.

12. A thermal protector other than that specified.

We need to check the correct value and if it is not set, replace it.

13. Water is dripping from the front panel.

When you see water dripping from the front panel, you should adjust the unit's position so that it leans slightly downwards from the outside. This will cause the water to drain out of the house.

14. Fault in the temperature sensor or thermostat.

When we notice a fault in the thermostat, there may be different solutions:

• Check the temperature sensor to make sure it is working correctly.
• Make sure there are no obstructions in the curtains. Any nearby object could cause a blockage, leading to failure.
• Check for leaks. Leaks can be a major cause.

15. Circuit size (amperes) problems

If our circuitry does not contain The appropriate size in amperes allows us to observe the failure in it.

Most window air conditioners require 120 volts and operate on a 15-amp circuit. However, keep in mind that some larger units may require a larger circuit.

16. Gas flash in the liquid line.

When there is an immediate gas leak in the liquid line, we must automatically add refrigerant to the system. This way, we will solve the problem.

17. Inadequate pipe design.

that there Inappropriate pipe design The reason for this may be that the vertical height is too high.

To solve this problem, we need to make sure that the sub-cooled chillers are adequate (around 5 degrees Celsius at heights up to 8 meters).

18. The computer is turned on and off frequently.

When this type of problem occurs, we can have two possible solutions:

• Check that the thermostat is properly positioned.
• Or check that the capacitor is not damaged.

19. Pollution in the system.

Contamination in the system usually occurs due to the presence of moisture in the system resulting from a series of conditions.

The solutions to this problem will be:

• Equipment drying out.
• Replace the system.
• Keep the cooling oil container airtight at all times.
• Or the system has the wrong oil.

20. Power element failure or load loss.

The solution to this problem would be to replace the power supply or the expansion valve.

21. Low condensing pressure.

For air-cooled condensing units, when the condensing pressure control system is faulty or poorly adjusted, there are two solutions:

• Install a universal type condensation pressure control system.
• Or adjust the fan's rotation.

22. The unit will not be turned on.

When the unit does not turn on, it may be due to it not being fully connected, a faulty circuit breaker, or a blown fuse.

To address these potential causes:

• Fix the plug connection properly.
• Reset the circuit breaker.
• Replacing blown valves.

23. Coolants or excess oil.

When this type of problem arises, there may be a variety of solutions:

• Charge the coolant to the appropriate levels.
• In systems containing thermal expansion valves and without a receiving tank, charge the liquid refrigerant by subcooling to 5.5°C below the condensing temperatures.
• Remove the oil and maintain its levels according to the manufacturer's recommendations.

24. Excessive oil buildup in the evaporator.

To solve this problem, we must modify the suction pipe to increase speed and provide a suitable oil yield.

As we can see, there are many problems that an air conditioning unit can cause. That's why our recommendation is always to consult an expert as soon as a problem is discovered.

If you are already an expert, we have provided a list here.

General examination

To prevent all these problems from happening, recommended It is a general examination procedure. Additional recommendations include:

• Primary data collection
• Remove the service cover
• Securing the filters
• Ensuring a constant electrical supply
• Washing the tray
• Engine repair
• Review of electrical circuits
• Paint review

All of this can save you a lot Long-term problems.