Air Conditioner Repair Checklist
1. AC Won’t Turn On
There can be several explanations why your central AC system won’t cool: a triggered circuit breaker, incorrect thermostat settings, a shut off switch or a full condensate drain pan.
Blown Circuit Breaker
Your system won’t turn on when you have a blown breaker.
To check if one has gotten overloaded, find your home’s main electrical panel. You can spot this silver fixture on the wall in the basement, garage or closet.
- Make sure your hands and feet aren’t wet before you touch the panel or breakers.
- Look for the breaker marked “AC” and make sure it’s in the “on” location. If it’s tripped, the switch will be in the "off" position.
- Steadily move the breaker back to the “on” location. If it immediately triggers again, leave it alone and reach us at 847-306-8990. A breaker that keeps tripping could signal your home has an electrical issue.
Wrong Thermostat Settings
If your thermostat isn’t giving a sign to your AC to run, it won’t turn on.
The first step is checking it’s switched to “cool” and not “heat.” Otherwise your AC might not switch on. You might also have hot air moving from vents because the heat is running instead.
If you’re using a regular thermostat:
- Swap out the batteries if the screen is empty. If the screen is presenting jumbled letters, buy a new thermostat.
- Make sure the right program is on the display. If you can’t alter it, override it by dropping the temperature and pushing the “hold” button. This will force your AC to work if programming is not right.
- Attempt to set the thermostat 5 degrees lower than the room’s temperature. Your AC won’t work if the thermostat is set the same as the room’s temperature.
Once your thermostat is set correctly, you should start getting cool air quickly.
If you have a smart thermostat, such as one produced by Nest, Ecobee, Lux, Honeywell or Bosch, look at the manufacturer’s website for troubleshooting. If you still can’t get it to work, contact us at 847-306-8990 for help.
Your system probably has a shut-off lever around its outside unit. This device is commonly in a metal box mounted on your home. If your air conditioner has recently been worked on, the device may have accidentally been turned off.
Clogged Condensate Drain Pan
Condensate drain pans keep the additional liquid your AC pulls from the air. This pan is located either below or within your furnace or air handler.
When there’s an obstruction or clogged drain, water can become concentrated and initiate a safety feature to turn off your air conditioner.
If your pan includes a PVC pipe or drain, you can get rid of the additional water with a custom pan-cleaning tab. You can get these capsules at a home improvement or hardware store.
If your pan includes a pump, find the float switch. If the mechanism is “up” and there’s liquid in the pan, you could need to replace the pump. Contact us at 847-306-8990 for help.
2. AC Blows Warm Air
If your equipment is going but not delivering cold air, its airflow may be clogged. Or it might not have sufficient refrigerant.
Your system’s airflow can be limited by a clogged air filter or dirty condenser.
How to Change Your Air Filter
A dusty filter can create numerous issues, like:
- Reduced airflow
- Frosted refrigerant lines or evaporator coil
- Uneven cooling
- Larger utility costs
- Leading your system to break down faster
We suggest replacing flat filters monthly, and pleated filters every three months.
If you can’t remember when you last replaced your filter, turn off your unit fully and remove the filter. You can spot the filter in your furnace or air pump’s blower compartment. It may also be situated in an attached filter case or wall-mounted return air grille.
Hold the filter up to the light. If you can’t see any light, you should buy a new filter.
4 Steps to Cleaning Your Cooling Equipment
Weeds, plants and shrubbery can obstruct your condensing system. This can restrict its airflow, lower its energy efficiency and impact your comfort. Here’s a way you can get your unit operating well again.
- Switch off the electrical current completely at the breaker or outdoor switch.
- Remove vegetation debris around the air conditioner. Once you’ve cleared all the refuse within a two-foot space, you can use a paint brush or vacuum to slowly clean the condenser fins. Misshapen fins can also affect efficiency.
- Use a hose nozzle to carefully take off dirt on the fins from inside the equipment. Don’t get water on the fan motor.
- Restore the power.
When air conditioning units don’t have enough refrigerant, they’ll have to work much harder to remove heat and humidity from your residence.
Here are a couple of symptoms that your system is seeping refrigerant:
- It takes a long time to cool your house and you’re constantly turning down the thermostat.
- Air blowing through the registers isn’t as chilled as it should be.
- You’re noticing hissing or gurgling sounds when cooling runs.
- Your evaporator coil is icy on account of having an issue taking on heat.
Worried your unit is losing refrigerant? You need a qualified heating and cooling service professional to fix the leak and restore the right amount of refrigerant in your unit. Get in touch with us at 847-306-8990 for help.
3. AC Not Blowing Enough Air
When it appears like you’re not getting adequate amounts of chilled air, there’s usually a blockage or separation within your air conditioning system.
- The first place is looking at your air filter. Replace it if it’s filthy.
- Make sure the ductwork is open throughout your residence.
- If you’re still not getting enough chilled air, you should have your ducts examined by a professional like Assured Appliance and Heating & Air. Your ducts might need to be repaired or rejoined in difficult locations like your attic, basement or crawl space.