Why does my furnace not ignite when the blower is not on?
The switch closes when exposed to a small amount of pressure. The control board makes sure the switch is open when the combustion blower is not on. Then, it confirms that the switch closes when the blower is on and gas is allowed to flow. Note that the furnace has two LEDs that also indicate what is going on, and if any faults are detected.
How can I tell if my furnace igniter switch is working?
Look under your furnace to see if it’s lit. If not, you can use a long match to try and carefully light it again. If that does not work then you have a bigger problem. With an electronic furnace igniter switch, your furnace is safer and does not use the small amount of gas that a furnace with a pilot light does.
What to do if your propane furnace won’t ignite?
Another common issue is when the blower begins to blow, but the furnace still isn’t igniting. Normally, this is an electrical issue. If it happens to be low power, I merely replace the battery with a one that has the right voltage. This usually solves the problem. I’ve heard people have this problem plenty of times in the past.
Why is my pilot light not working on my furnace?
Pilot light problems are sometimes related to failed safety sensors or airflow issues which causes the furnace blower will come on but not to ignite. The two place to check first are the thermocouple and the sail switch. A sail switch is essentially an on/off switch, that detects if there’s not enough airflow.
The switch closes when exposed to a small amount of pressure. The control board makes sure the switch is open when the combustion blower is not on. Then, it confirms that the switch closes when the blower is on and gas is allowed to flow. Note that the furnace has two LEDs that also indicate what is going on, and if any faults are detected.
How to reset a furnace using the furnace reset button?
If the furnace doesn’t have a power switch you can turn off, turn off the circuit breaker controlling the furnace, open the blower housing and locate the reset button on the side of the blower motor. Press it in until it clicks and then restore power to the furnace by turning the breaker back on.
Is there a reset button on the furnace blower motor?
Most electric motors, including the furnace blower motor, have a reset switch that pops up when this happens. Often the problem corrects itself and it is only a matter of pressing the reset button to get the furnace going again.
Why does my home heating system not ignite?
If the air in your system is not flowing it cannot produce the required gas/air mixture and your home heating system will not ignite because of it. Often times the reason air does not get to your furnace’s igniter is because it is restricted. The main reason for this air restriction is usually traced back to dirty air filters.
