10 Common Air Conditioner Problems and Their Solutions

10 Common Air Conditioner Problems and Their Solutions – If you’ve ever repaired your air conditioner before, you’ll agree with us that it can be quite costly.

That’s why it is essential to schedule periodic maintenance and tune-ups with professional AC technicians so you can enjoy optimum performance from your appliance.

Aside from regular maintenance, you should also learn about common air conditioning issues. This can help you take smart preventive measures against making huge repairs.

Here are the 10 common air conditioner problems and their solutions.

1. Air Conditioner not coming on

If the AC won’t turn on or isn’t working, be sure to check your thermostat batteries. If the batteries are dead, have them replaced.

However, if the batteries are in good working condition, then take a look at the thermostat settings. This is to determine whether the cooling mode is on with your preferred temperature settings.

If the thermostat is on but your air conditioner won’t still come on, check the circuit breaker. If the circuit breaker is tripped, the air conditioner will not power on.

So, reset the circuit breaker by turning the switch off and back on again.

2. Air conditioner freezing up outside the appliance

If your air conditioner is freezing up, it can be due to a number of reasons. They include low outside temperature, insufficient airflow, low coolant levels, stuck contractor, blower motor problems, etc. Check for all of these and get an experienced AC technician to resolve them.

3. Air conditioner not blowing cold air

If your air conditioner doesn’t blow cold air, then it is likely that the unit’s air filter is dirty. Aside from restricting the airflow of your unit, a dirty air filter can even further freeze up the condenser unit and lower the cooling power of your air conditioner.

Maintain a habit of changing your air filter every month. It will help your cooling appliance blow fresh, cold air.

4. Air conditioner emitting noise

An air conditioner is expected to run with as little noise as possible. But if your AC is emitting more noise than usual, then it’s a sign of a problem.

There are several reasons why your AC might be producing that unnatural sound. A leaking refrigerant can cause the unit to produce a hissing sound.

If you can hear a clicking noise each time you turn on or off your air conditioner, then there might be a relay problem.

Noises like thumping, banging, or rattling sounds could mean a blower or motor assembly problem.

Screeching noises can be emanating from the compressor or fan motor. A buzzing sound could also arise from faulty electrical components.

Get an experienced AC technician to look at your unit if your appliance producing any of these sounds.

5. Air conditioner Refrigerant Leaks

If the coolant in your AC begins to leak, it will affect the temperature and hamper the unit’s optimal performance.

AC refrigerant leaks can lead to high power consumption of your appliance and low efficiency. It can also result in uneven cooling, the coil freezing, a damaged compressor, etc.

Be sure to check your AC regularly for any possible refrigerant leaks and get a professional for any repairs.

6. Air conditioner leaking water outside

It is perfectly normal for water to leak outside from your air conditioner on a humid or hot day while the unit is in operation.

It is also quite alright if the water leakage happens outside in cool weather at a temperature of 15 degrees Celsius or less because there’s a chance that the unit can freeze and leak water when it melts.

However, there are other reasons why your air conditioner might leak water outside and you should take note of them.

They can be caused by dirty air filters, blocked drain pipe, low coolant levels, broken condensate pan, or even improper installation.

7. Problems with drainage

When the drain pipeline gets clogged with dust, dirt, and algae, it can limit the power of the AC. Additionally, if water doesn’t properly drain, mold, fungus, and mildew can arise.

This can lead to gasses and bad odor filtering into the room when the AC is functioning. You can prevent this by ensuring your drain line is regularly maintained, cleaned, and adequately inspected.

In addition, ACs that aren’t properly mounted at a level position may not drain well.

8. Frozen evaporator coil

This arises when your AC doesn’t get sufficient air required for its seamless operation. As a matter of fact, a frozen evaporator coil is capable of making your air conditioner freeze up and stop working altogether.

Causes of insufficient airflow in the unit can include blocked vents and ducts, dirty filters, even a faulty fan. Try to keep the air filter clean always to maximize airflow and indoor air quality.

9. Sensor problem

Now, your AC comes with a thermostat sensor. This is located near the evaporator coil. The thermostat’s job is to measure the air temperature in the evaporating coil and alter the cooling depending on room conditions.

Thus, if the sensor, for one reason or the other, is forced out of its normal position, the AC can randomly turn on and off or cycle repeatedly.

Check to make sure the air conditioner sensor is in place and in close proximity to the evaporator coil. However, avoid letting them come in contact with each other. You can adjust the sensor easily by bending the wire the keeps it in position.

10. Electric control failure

If you’re always switching your AC on and off you might wear out the fan controls along with the compressor.

The electrical connection needed to start the appliance is made up of the condenser fan motor, the compressor, and the blower motor.

If there is a connection problem, it can stop the motor and the compressor from starting up. You can check the electrical connections to see where the problem is coming from.

Top Air Conditioners You Can Purchase

If you just can seem to find a solution to your air conditioner’s problem or you feel it is now past its best days and it’s time to get a replacement, you can take a look at some of the cooling units below.

They have been carefully selected and trusted to give you exactly what you need in terms of premium cooling. These air conditioners can be bought from Panasonic stores, Royal stores, or the best electronics shop near you.

Panasonic Split AC 1.5HP with R410 Gas (LV12)

Royal 2HP Floor Standing AC (XA2RFA)

Panasonic Split AC 2HP (RC18)

Royal Floor Standing AC (HW3FAC-INV)


One of the best things you can do for your air conditioning unit is to pay attention to how it functions and take the necessary steps if you notice any problems with the appliance.

This article contains some of the air conditioner problems and their possible solutions.

However, if you feel it’s time to get a new cooling unit, you can check out some of the options listed above.

You can acquire them from Panasonic stores, Royal stores, or any of the best electronics shops closest to you.

Sims Nigeria

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