Troubleshooting The Most Common Issues With Air Conditioning Systems

While many air conditioning repairs require a professional, homeowners can troubleshoot and fix some common home A/C problems themselves. In this article we will describe a few of the most common issues which can be resolved on the spot.

YOU’RE A/C ISN’T WORKING; IS THERE A POWER OUTAGE IN YOUR HOUSE?

That might sound funny, but every year we do get a few calls where our technician shows up for an emergency call only to find out that there is no power in the house (or even in whole neighbourhood). Read on if this isn't the case in your home!

START AT THE THERMOSTAT

  • If your AC unit isn’t working the first thing you need to check is your thermostat.

  • If your thermostat screen is black it means the battery is dead. Replace it and restart the system.

  • If your thermostat is ON, try setting it 5°C below the room temperature. Suppose your room temperature is 30°C, just set the thermostat to 25°C. The room temperature is above the set point now, so the thermostat will send a signal to the A/C to start.

Now, to know whether the signal is sent or not you will have to check the following components: indoor fan, condenser/outdoor fan and compressor. All three components should be ON and connected to a power source. Once this is confirmed, if you are still not receiving cool air it may be an indicator that it’s time to change your filter. In this case, proceed to the next troubleshooting tip.

A/C UNIT IS WORKING BUT NOT COOLING

This may be due to dust and debris deposited on the filter or evaporator coils; in which case you will replace the filter. Just make sure you replace it with the same filter you’ve removed, keeping in mind it’s make and size; the wrong size or improper filter may cause more problems.

If this did not help, just contact your technician to check for refrigerant charge or leakage.

A/C UNIT IS MAKING A STRANGE NOISE

You’re A/C unit can be making weird noises for many reasons, and an improper “diagnosis” may cause your unit to become damaged beyond repair. Just switch off you’re A/C to avoid any wear and tear and get your technician on board.

A/C UNIT IS COVERED WITH ICE

There are several things that can cause an A/C unit to freeze:

  • Most popular reason is lint, i.e. nothing but the short and fine fibres which separate from the surface of your clothes that stick to the cooling coil and filter. Once it gets in contact with moisture it starts inflating thus blocking the airflow. When the A/C is running at its full capacity and the amount of airflow is low, it produces a greater cooling effect that freezes moisture, or condensate. To tackle this problem replacing or cleaning the coils and filters is preferred.

  • Restrictions to your air flow system could be due to another reason. Just check that vents in the ceiling and floor are open and nothing is blocking them.

** When these troubleshooting tips do not resolve an issue you are experiencing with your air conditioning unit, it’s always a good idea to call your equipment provider. You can contact Smart Home Works at 1-800-749-7759 at any time. We offer 24/7 customer service for our clients.