Air Conditioner Repair Checklist
1. AC Won’t Turn On
There can be several explanations why your AC equipment won’t work: an overloaded circuit breaker, wrong thermostat settings, a turned off switch or an overfull condensate drain pan.
Triggered Circuit Breaker
Your system won’t work when you have a tripped breaker.
To find out if one has tripped, find your residence’s main electrical panel. You can locate this silver box on the wall in the basement, garage or closet.
- Ensure your hands and feet aren’t wet before you touch the panel or breakers.
- Look for the breaker labeled “AC” and confirm it’s in the “on” location. If it’s overloaded, the breaker will be in the "off" position.
- Firmly transfer the lever back to the “on” location. If it instantaneously triggers again, don’t touch it and contact us at 301-363-4699. A switch that keeps flipping may indicate your home has electrical trouble.
Wrong Thermostat Settings
If your thermostat isn’t signaling your air conditioner to start, it won’t switch on.
The first step is ensuring it’s switched to “cool” and not “heat.” Otherwise your air conditioning might not switch on. You may also get hot air coming from vents being the heater is running instead.
If you’re using a digital thermostat:
- Swap out the batteries if the monitor is blank. If the screen is displaying jumbled numbers, replace the thermostat.
- Check the right option is displaying. If you can’t change it, override it by dropping the temperature and hitting the “hold” button. This will make your AC start if the configuration is wrong.
- Try setting the thermostat 5 degrees cooler than the house’s temperature. Your AC won’t cool if the thermostat is set the same as the space’s temperature.
Once your thermostat is calibrated accurately, you should begin getting refreshing air fast.
If you have a smart thermostat, like one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for help. If it still won’t work, contact us at 301-363-4699 for help.
Your system typically has a power-cutting device by its outside unit. This device is generally in a metal box mounted on your residence. If your unit has recently been serviced, the lever may have inadvertently been turned off.
Clogged Condensate Drain Pan
Condensate drain pans hold the additional liquid your air conditioner takes out of the air. This pan can be situated either beneath or within your furnace or air handler.
When there’s a clog or backed up drain, water can accumulate and initiate a safety control to stop your system.
If your pan includes a PVC pipe or drain, you can drain the additional liquid with a custom pan-cleaning tab. You can get these tablets at a home improvement or hardware store.
If your pan involves a pump, find the float switch. If the lever is “up” and there’s water in the pan, you could need to replace the pump. Contact us at 301-363-4699 for support.
2. AC Blows Warm Air
If your system is on but not cooling, its airflow might be blocked. Or it may not have adequate refrigerant.
Your equipment’s airflow can be decreased by a blocked air filter or filthy condenser.
How to Put in a New Your Air Filter
A dusty filter can create many problems, such as:
- Lower comfort
- Frosted refrigerant lines or evaporator coil
- Uneven cooling
- Larger energy costs
- Causing your system to wear out faster
We recommend installing new flat filters monthly, and pleated filters every three months.
If you can’t remember when you last replaced your filter, switch off your system totally and take out the filter. You can find the filter in your furnace or air pump’s blower compartment. It could also be situated in an attached filter case or wall-mounted return air grille.
Hold the filter up to your light fixture. If you see a lot of dust, you certainly should replace it.
How to Clean Your Air Conditioning System
Greenery, grass and bushes can obstruct your condensing system. This can limit its airflow, impact its energy efficiency and change your comfort. Here’s how you can get your unit running smoothly again.
- Switch off electricity fully at the breaker or external switch.
- Remove vegetation rubbish around the equipment. Once you’ve cleared bigger clutter within a two-foot space, you can use a soft brush or vacuum to carefully remove dust from the unit’s fins. Misshapen fins can also affect efficiency.
- Use a hose nozzle to slowly take off dirt on the fins from inside the equipment. Don’t get water on the fan motor.
- Restore the power.
Not Enough Refrigerant
When cooling units don’t have ample refrigerant, they’ll struggle to remove heat and humidity from your space.
Here are a few flags that your equipment is losing refrigerant:
- It takes an extended amount of time to cool your rooms and you’re constantly turning down the thermostat.
- Air conditioning moving through the ducts isn’t as cold as it should be.
- You’re noticing whistling or gurgling sounds when cooling runs.
- Your evaporator coil is frosty due to having an issue handling humidity.
Think your equipment is seeping refrigerant? You need a licensed heating and cooling service expert to take care of the leak and refill the correct measurement of refrigerant in your system. Get in touch with us at 301-363-4699 for help.
3. AC Not Blowing Enough Air
When it seems like you’re not getting enough chilled air, there’s likely an obstruction or separation within your cooling system.
- The first step is looking at your air filter. Replace it if it’s soiled.
- Make sure the registers are open across your house.
- If you’re still not getting ample chilled air, you should have your ductwork inspected by a professional like M & S Heating & Air LLC. Your duct system might need to be fixed or reconnected in tricky spots like your attic, basement or crawl space.