An HVAC repair professional can help if you’re experiencing problems with your HVAC system. However, you may want to try a quick fix at home first. HVAC Troubleshooting and DIY is easy when you are aware of common system issues. These issues can occur in your compressor, condenser, evaporator coil, or expansion valve. Try these simple troubleshooting and DIY methods for typical HVAC issues.
Your AC Unit Won’t Turn On
Faulty air conditioning activation is a frequent problem that homeowner’s experience with a unit. Common causes of a faulty AC activation include:
- Issues with the thermostat settings
- The internal switch is deactivated
- The circuit is tripped/there is a blown fuse
Luckily, there are several at-home solutions that you can try. First, make sure that your thermostat settings are in the correct position. Once the thermostat is set to ‘COOL,’ adjust the temperature below the current room temperature. If the AC doesn’t kick on in a few minutes, it’s time to check your breaker box.
There are two ways to troubleshoot your circuit breaker box. First, ensure that the air-conditioning unit’s 240-volt breaker switch is turned to ‘ON.’ Second, ensure that the furnace blower’s 120-volt breaker switch is also turned to ‘ON.’ You may notice that your breaker is consistently tripping or the fuse is blown. This indicates that there is a more serious issue at hand, like a short circuit. Call your technician right away if this is the case.
Once you confirm that the circuit breaker switches are set correctly, make your way to the condensing unit. Check that all switches around the unit, including the external safety switch, are on. Then check for excess water in the condensate overflow tray and empty if needed. Occasionally, excess water in the tray triggers the sensor, and causes the unit to shut off.
For more HVAC troubleshooting & DIY tips, contact your air-conditioning technician.
You Experience Poor Airflow from the Vents
Little to no airflow is a result of a dirty air filter, evaporator coil, or condenser coil. If these items are not properly maintained, it could result in blocked airflow or a disconnected system. Find out what you can do to troubleshoot these problems at home.
A dirty filter causes more than just poor airflow and filtration. It could lead to a frozen air conditioner or overheated furnace. Replace dirty filters with new ones and call a professional if you need assistance with replacement.
Dirty Condenser Coil
A condenser coil’s job is very important as it helps to cool the system’s liquid refrigerant. An old or dirty coil will freeze your system and damage the compressor. Simply hose off the coil or wipe with a damp towel to clean off debris and dirt. Be sure to disconnect the power before doing so.
Dirty Evaporator Coil
This indoor coil absorbs your home’s hot air. It can cause restricted airflow if not properly maintained, but it is difficult to troubleshoot properly at home. Because it is located in a small box near to or above your furnace, it can be difficult to reach. This coil is impacted by the furnace’s filter and should be diagnosed by an HVAC professional.