3 Tips to Troubleshooting Your Air Conditioner

One of the problems that we face, especially on the hottest of days, is when the air conditioner is not working. There are several reasons why an air conditioner is struggling. It could either be that the system is poorly maintained, or there is a malfunction. Either way, having a poorly working air conditioner is bothersome and could actually cost you more to run.

But before you make a call for a repairman to fix your air conditioner, try first to do some basic troubleshooting steps to diagnose the problem in your system. Having a professional fix it is fast and efficient, but it may cost you more. You may be able to save a lot if you try doing it yourself with just a little bit of tools and knowledge needed.

Here are three useful tips to troubleshooting your air conditioner.

1. If your a/c is making humming noise that is too distracting enough in your home, that means there is something wrong with it. When that happens, it’s either your compressor is malfunctioning, some parts of the unit are loose, or there is a leak in your refrigerant. A humming sound is a minor issue that can turn into a major one, so it is best to perform steps to fix it as soon as possible. Try to access the system electrical disconnect and check if there are worn out contacts. Cycle power it three times. You can also contact the manufacturer of your unit and as for a sound blanket for your model or a universal blanket.

2. If your air conditioner won’t go on automatically, try to check the main electrical panel if a fuse is blown or a breaker trips. If you see a problem there, turn it off and then to reset the breaker and then replace the fuse. If it continues to trip despite performing several basic troubleshooting steps, it is possible that there is a short in the system. Next, make sure that the thermostat is set to cool. Make sure that all the wires are attached securely to their terminals. Also check the capacitor and the wires of the compressor. If the capacitor has failed, your air conditioning unit will not run.

3. If you see traces of frost build-up or water around your air conditioning unit, chances are there is a restricted or reduced airflow over the evaporator coils. This is usually caused by a dirty or clogged filter. It can also be caused by lower level of refrigerant that may have happened if there was a leak or if it wasn’t properly installed in the first place. Here are the immediate steps you need to take to fix it before it goes out of hand. First, turn off the air conditioning system. Next, check if the filter is clogged and clean it. It may take a couple of hours, but let the frost melt or thaw completely. Then, have a fresh filter installed and turn on the system again. Check if the problem has been solved.


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  1. * * * / * * *

    It is extremely nice to see the greatest details presented in an easy and understanding manner.

  2. Victoria Martinez
    * * * / * * *

    This is surely taking us to the right method to inspect a air conditioner ourselves. Yes, that’s indeed a better solution before calling on a technician.

  3. torinilda
    * * * / * * *

    Shutting down the AC unit before cleaning and maintenance always helps out. Nice tips given above.