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The Top Air Conditioner Issues and How to Fix Them

If you live in Florida, you know the value of having a good air conditioner. Now that summer is here, you probably rely on your air conditioner more than ever. The last thing you want is for your AC to work poorly or even shut down entirely during the year’s hottest months. Let JMAK Heating and Cooling guide you through the most common issues with air conditioners and how to deal with them. Read more below!

Your AC Won’t Turn On

There are several possibilities for an AC that won’t turn on. You may have an issue with your thermostat, a broken part, a tripped breaker, a blown a fuse, or frayed or broken wiring. During your initial inspection, ensure your AC has power and is connected. If it is, then you likely have one of the above issues.

What To Do

First, try setting your thermostat to cool. A broken thermostat, or one not correctly set, might be the culprit. If this doesn’t work, check your electrical panel for a tripped breaker or a blown fuse. Simply reset it on the circuit breaker panel if this happens. Finally, check the wiring for damage or breaks. If it is a problem with the wiring, or if you are still unable to diagnose it, it’s time to call a professional HVAC service.

Your AC Runs But Won’t Cool

A working AC that nevertheless refuses to cool is a common problem. As with an AC that won’t turn on, there are multiple possibilities for this issue. It could be a dirty air filter, low refrigerant levels, or a blocked condensate drain.

What To Do

First, check your air filter. If it has been longer than 2-3 months or you can’t see the light through the filter, it is time to replace it. If that doesn’t alleviate the problem, remove the unit’s cover to see if the condensate coils are iced or dirty. If they are, clean them. If your refrigerant levels are low, add more to the unit -just make sure that the unit isn’t leaking, as this may cause insufficient refrigerant. If none of these solutions work, you need to call the professionals.

Your AC Is Making Strange Noises

Air conditioners usually make some amount of noise, but you can tell when the sound is unusual. You may hear a squealing, grinding, pinging, popping, rattling, screeching, hissing, buzzing, whistling, or banging noise. These noises are indicative of a problem! You can sometimes tell what the problem is based on the noise your air conditioner is making:

  • Squealing: An improperly aligned or broken belt
  • Grinding: A problem with the motor’s bearings or an issue with the capacitor or compressor
  • Pinging or popping: There is a loose flap of metal in the ductwork
  • Rattling, thumping, or banging: Loose cover panels or a problem with the blower or motor
  • Screeching: A problem with the fan motor or compressor
  • Hissing: A refrigerant leak
  • Buzzing: Bad electrical components
  • Whistling or whining: Airflow problems

What To Do

Unless the cause of the sound is apparent, like blocked ventilation on the unit, this is not a problem you should try to fix yourself. Working on a damaged AC without proper training risks even more damage to the unit. You should call a professional HVAC company if you hear your AC making strange noises.

Your AC Has Weak Or No Airflow

An AC with low or zero airflow is just as bad as one that won’t cool in the first place. Many of the problems associated with ACs that won’t turn on or won’t cool are also present in ACs with weak or no airflow. A tripped breaker may have caused the fan to stop running, the blower belt may need to be replaced, your condensate pump reservoir may be full, or you may have a problem with your thermostat, control board, or wiring. A blocked or dirty air filter could also be the culprit, as could a faulty tube or leak that has caused the condenser to fail.

What To Do

First, check your circuit breaker. Reactivating a tripped breaker could turn your fan back on and fix the problem. If this doesn’t work, try resetting your thermostat. Other options are cleaning your AC’s air vents and replacing their filters. If none of these solutions work, you need to call a professional HVAC company.

Your AC Is Leaking

ACs form condensation on the unit during regular operation, but any leak from the unit itself is a problem. You may have a clogged drain line, a broken condensate pump, blocked air vents or filters, or a broken refrigerant line. While leaking water is problematic, leaking refrigerant is dangerous to the environment, and you should address it immediately.

What To Do

First, inspect your air vents and filters. Unblock any air vents and replace your filter. If that doesn’t help, try clearing your condensation drain pipe and checking it for leaks. If the problem persists, use a bleach solution to clean algae from the pump system. If this doesn’t work, check the electrical connection to the condensate pump. You may need to replace the condensate pump entirely. Call a professional HVAC company immediately if none of these solutions work or if your AC is leaking refrigerant.

Your AC Smells Strange Or Bad

There are several possible causes for strange smells coming from your AC. One potential with electrical odors is that parts like the blower motor, seized bearings, or loose electrical connections are overheating. A burning smell could be caused by debris in your AC unit or the ductwork. If the smell is very unpleasant, it’s probably due to mold, dirty air filters, or animals trapped in air ducts.

What To Do

The most you can do in this situation is ensure that you have recently replaced your air filters. If they have, or if you replace your filters and the smell doesn’t dissipate, it is probably one of the other problems listed. These require a professional HVAC company to diagnose and repair.

Your AC Won’t Turn Off

An AC that won’t turn off may not seem like a big problem, but it is. Regardless of conditions, your AC should go through cooling cycles, shutting down periodically when the desired temperature is reached. An AC that doesn’t do this wastes a lot of electricity, driving up your energy bill. Constant running also increases wear and tear on the AC’s parts, running the risk of damaging them and ensuring that you will need to replace them sooner. Possible reasons for a constantly running AC include a problem with the fan, a dirty filter, electrical issues, or a faulty thermostat.

What To Do

As with other issues that might be related to your filter, try replacing your filter. Then check your thermostat to ensure that it’s giving the correct readings. If the problem is with your fan, you may need to clean it. If your AC is constantly running due to electrical or other issues, then you need the services of a professional HVAC company.

Choose JMAK Cooling and Heating

The best way to prevent these air conditioning issues is to have a reliable, trustworthy HVAC company do regular inspections -like the professionals at JMAK Cooling and Heating. We are a dynamic company located in Brevard Country, Florida, that serves commercial, residential, and new construction customers. Our company is eager to start working with you to diagnose, repair, and maintain your HVAC system. Call us today!

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