When your AC fan stops working, it can be both a frustrating and uncomfortable experience, especially during hot weather. Several common issues might cause the AC fan to stop functioning. In this blog post, we will explore three prevalent problems: capacitor issues, clogged air filters, and contactor problems. We will also discuss how homeowners can check for these issues and potentially resolve them.
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Capacitor Problems
What Happens:
The capacitor is a small cylindrical component in your AC unit that stores electrical energy and helps power the fan motor and compressor. Over time, capacitors can degrade or fail, which prevents the fan from operating. When the capacitor is malfunctioning, you might hear a faint clicking sound or notice that the fan blades are not spinning even though the rest of the unit seems to be running.
How to Check:
Always turn off the power to your AC unit before inspecting any internal components. Look at the capacitor for any visible signs of damage such as bulging, leaks, or corrosion. If you have a multimeter, you can test the capacitor’s charge. If it reads zero or significantly below the rated voltage, the capacitor needs to be replaced.
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Clogged Air Filter
What Happens:
The air filter in your AC system traps dust, dirt, and other particles to keep the airflow clean and efficient. If the filter becomes too clogged, it can restrict airflow, causing the fan to work harder or stop working entirely. This can lead to overheating and potentially damage other components in your AC system.
READ MORE: How often to change air filters
If you have a hard time remembering to change your filters, you may want to think about a filter delivery service that sends the filters when it’s time to change them.
How to Check:
First, locate the air filter. The filter is usually located near the return air duct or in the air handler. Check the filter for a buildup of dirt and debris. If it looks dirty or clogged, it needs to be cleaned or replaced. Replace disposable filters according to the manufacturer’s instructions. If you have a reusable filter, clean it thoroughly and ensure it’s completely dry before reinstalling it.
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Contactor Problems
What Happens:
The contactor is a switch that controls the electrical power to the compressor and the fan motor. When the thermostat signals the AC to cool, the contactor closes, allowing electricity to flow. If the contactor is faulty, it might not close properly, preventing the fan from receiving power.
How to Check:
Turn off the power to your AC unit. Locate the contactor in the outdoor unit’s electrical panel. Look for signs of pitting, burns, or corrosion on the contact points. With the power off, you can manually press the contactor. If the fan starts running, the contactor is likely the issue.
Contactors are relatively inexpensive and can be replaced easily if you are comfortable working with electrical components. Otherwise, it’s best to call a professional technician.
If none of these seem to be the issue, it is also possible that the fan motor has gone out or there are other electrical issues within the unit. These are more complicated issues to diagnose and repair so a pro will be needed.
Additional Tips for Homeowners
While some AC issues can be resolved with a bit of DIY troubleshooting, others might require professional assistance. Here are a few additional tips for homeowners:
Regular Maintenance: Schedule regular maintenance checks for your AC unit to catch issues before they become major problems.
READ MORE: What is included in AC Maintenance?
Thermostat Settings: Ensure your thermostat is set to the correct temperature and mode. Sometimes, incorrect settings can cause the fan to stop working.
Listen for Unusual Noises: Unusual noises can be a sign of mechanical issues that need attention.
READ MORE: AC making loud noises
Check Circuit Breakers: Sometimes, a tripped circuit breaker can be the cause of the fan not working. Reset any tripped breakers and see if the issue is resolved.
By understanding the common reasons why your AC fan might stop working and knowing how to check for these issues, you can keep your cooling system running smoothly and efficiently.
Call Quality Comfort Home Services for AC fan repair in Cincinnati, OH
If you’ve tried to troubleshoot the issue but your AC fan is still not spinning, give Quality Comfort a call at 513-620-4822 or book service online anytime. We take the time to diagnose your issue, empower you with knowledge about your system and provide an overall great experience. Just take a look at our reviews!
