Troubleshooting AC Blower Motor Numbwires 1, 2, 3: Tips for Speed Settings and More

An AC blower motor usually has 4 wires, with each winding’s neutral connecting inside. Common problems occur when resistors for speeds 1, 2, and 3 fail, affecting performance. Check electrical specifications, including RPM and horsepower, and ensure OEM replacement for reliable functionality with your specific model. Next, adjust the speed settings. Most AC systems feature … Read more

AC Blower Motor Making Noise? Troubleshoot Loud Sounds and Find Fixes

A noisy AC blower motor often indicates underlying issues. Common causes include worn-out bearings, an out-of-balance blower wheel, a loose motor mount, a defective capacitor, a bent blower wheel, or debris buildup. Regular maintenance can help prevent these problems and ensure your HVAC system operates efficiently. Begin troubleshooting by turning off the AC unit to … Read more