What To Do When Your Air Conditioner Won’t Shut Off in Medway, MA

“Why won’t my AC turn off?” It’s an issue many homeowners face, especially during warmer months.

As the go-to crew for AC repair in Medway, MA, we at Pro Comfort Control have encountered and addressed many unusual HVAC system behaviors. Keep reading as we help you try to narrow down the culprit.

Is It Normal for Your Air Conditioner To Run All Day?

Your indoor cooling shouldn’t run nonstop for several hours, even in the middle of a particularly hot Medway summer.

A standard cooling cycle lasts 15 to 20 minutes and happens twice every hour. Once the system reaches the desired temperature, it should turn off automatically to end the cycle.

Check your thermostat settings and note when the system starts and stops. Use a timer to track cycles and take note of any irregular patterns.

Common Reasons Your AC Runs Continuously in Medway

Why wait for the inevitable breakdown that leaves you sweating on a scorching day? Troubleshoot your system now and avoid costly repairs. Possible causes include:

Improper Thermostat Settings

You could have set the temperature too low. Try raising it a few degrees and see if the system shuts off.

Turning the fan setting to “On” is another reason. This mode keeps the fan running nonstop, even when a cycle ends. Switch it to “Auto” instead so it syncs with the cooling system and shuts down after each cycle.

Thermostat Malfunction

“Why won’t my AC turn off even after fine-tuning the thermostat settings?” If you’re asking yourself this, you may have a faulty device. Check and replace the batteries as needed first, since low power can impact performance.

Here are some other common issues:

• Dust buildup: A dirty thermostat sensor may misread temperatures. Read your manual to learn how to clean it.
• Misalignment: Installing your device near ovens, drafty windows, or direct sunlight can skew readings. Relocate it to an interior wall.
• Component damage: How old is your thermostat? Bring in a specialist who can inspect for worn-out wires and corroded circuits.

Electrical Issues

All air conditioners rely on electricity, and one component failure can disrupt how a system operates.

For example, a stuck relay switch provides constant power to the system even when not needed. The compressor contactor can fuse while closed and make the condenser unit run nonstop. Err on the side of caution and let a technician handle these issues.

Faulty Fan Limit Switch

Locate the fan’s limit switch and check if it’s stuck on override. You will typically find this component near the blower compartment.

Reset the switch to see if it resolves the issue.

Incorrect System Size

Is your unit a fairly new addition to your Medway property? An undersized system won’t have enough power to achieve your set temperature. It will keep on running and waste energy without bringing you indoor comfort.

Calculate the load requirements correctly or consult a professional for an evaluation.

Dirty Condenser Coils or Outdoor Unit

Condenser coils play a crucial role in cooling your Medway property. They absorb the heat your AC collects indoors and release it outside. Unfortunately, a thick layer of grime or dirt can block this process.

The heat has nowhere to go, so the system works harder and longer to compensate. Read your AC manual for cleaning tips.

The outdoor condenser unit may also have this problem. Grass clippings, mulch, tall weeds, and other obstructions can block airflow. Keep at least two feet of clear space around it.

Frozen Evaporator Coils

Does the air from your vents feel warm? You may have frozen evaporator coils.

System complications may prevent this component from receiving enough heat. As a result, condensation pulled from the air can freeze on the coils’ surface. This hardened layer further reduces airflow and efficiency.

Turn off the system and wait for the ice to melt. Clean the coils with a soft brush and a mild detergent and water solution if needed. You may need to book a professional tune-up if the issue persists.