Carrier Furnace Fan Not Working

Press the fan switch on the thermostat to turn it on.

Carrier furnace fan not working.

Changing the fan setting to auto will resolve the issue by turning off the blower when the system is not actively cooling. If the fan does not start you have a wiring issue circuit breaker trips or motor problem circuit breaker does not trip. Roller shaft wheel parts bearing parts blower wheel fan blade parts bracket flange parts cap. In either case we recommend calling a professional hvac technician to diagnose and remedy the problem.

If the setting is on the fan will run constantly even when the system isn t cooling the air. Vibration or noisy operation would signal the fan blades are likely out of balance. Many of the newer furnaces do not have fan center relays but many of the older furnaces and some new furnaces still do. To determine if the capacitor has failed inspect the capacitor.

Start by turning the furnace off turn your thermostat to fan only and wait a few minutes. If the van is dirty vacuum it to remove damaging particles. Check the ssu switch on your heater if the device is still not producing adequate. You would need to look inside your furnace to determine if you have a fan center relay.

Check that the circuit breaker to your furnace is not off but also understand that it is not uncommon for your blower motor the fan to have a separate circuit breaker so check this as well. If the fan blades don t spin at all it s likely the condenser fan is not working and possibly burnt out requiring replacement. If the capacitor is defective the fan motor might be noisy overheat or not run at all. This could result in warmer air blowing from the registers when the ac unit isn t operating.

If you see or hear the fan turn on your blower motor is not the culprit. If the capacitor is bulging or leaking repla ce it. Find the most common problems that can cause a carrier furnace not to work and the parts instructions to fix them.