Why is my furnace blower tripping?

The most common cause for your furnace to trip your circuit breaker in your blower motor overworking itself. The blower motor can begin to overwork itself when air flow to the motor becomes restricted. One of the largest causes of this is a dirty air filter. A dirty filter can also cause your furnace to short cycle.

Why does my furnace kick on then right back off?

Your furnace turns on, runs for a few minutes and then shuts off. Typically, a furnace keeps turning off and on (or “short cycling”) like this because of one of these problems: Heat exchanger is overheating due to low airflow. Dirty flame sensor rod.

When does the furnace blower turn on and off?

In normal operation, your furnace blower fan should come on 1.5 to 3 minutes after your thermostat calls for heat and should turn off several minutes after the heating cycle ends. Your blower should run constantly until the heating cycle ends.

Why does my central heating unit continue to run after it stops producing heat?

If this is a forced air system, the blower will continue to run for a specific amount of time after the unit stops producing heat. The unit will no longer be producing heat, but the blower will continue to run to spread the heat that was produced when the unit was full on.

Can a central fan be run without heating air?

Give us a call at 206-565-1455 to get pricing and to schedule an installation. Most central HVAC systems have the capability of running the fan independent of heating or cooling the air.

Why does my a / C blower fan keep running?

There are some reasons (explained at BLOWER FAN CONTINUOUS OPERATION) to leave the blower fan on continuously for long periods, such as to use an air filtering system to improve indoor air quality. And in some buildings we may run the blower continuously for more even or better conditioned (heated or cooled) air distribution.

What makes a central air blower stop working?

The blower motor is housed inside the home, typically in the furnace system. 3 What Would Make a Dryer Stop Working? 4 Is a Popping Noise in the Main Breaker Dangerous? When the home’s thermostat detects that the living space is warmer than its programmed temperature level, a cooling cycle begins.

How long does it take for Furnace Fan to stop blowing?

This shuts the furnace down and prevents your thermostat from calling for more heat. If the furnace was in the middle of a heating cycle, wait 3 to 4 minutes for the blower fan to stop running. Did your furnace fan stop blowing?

Why does my furnace blower turn on and off all the time?

But since temperatures inside the heat exchanger should stay relatively stable when the furnace burners aren’t on, your blower fan shouldn’t be needed at all. So if your furnace blower is turning on and off when the furnace isn’t in a heat cycle, it usually means the fan limit switch is defective.

What happens if the blower fails to start?

If the blower motor fails to start, nothing happens. The living spaces gets uncomfortable as the cooling cycle stalls. Most thermostats control both central air and central heat. Make sure the switch on the side of the thermostat is set to “Cool” instead of “Heat.” That will ensure that the proper mechanical system is operating.