Possible causes: The furnace could need resetting. Other possible causes include a
faulty connection in the thermostat
, a pilot flame in need of cleaning, a switch that's been turned off or problems with a gas valve.
If you have a gas or oil furnace, the reset button may
trip if you are out of fuel
. … If a furnace isn't receiving enough airflow, it may overheat and trigger the reset button to trip. Make sure to clean or replace the air filters and keep the air vents open enough for proper airflow.
Don't hit “reset”
more than twice
. The process pumps oil into the burner chamber, where it can accumulate if you have no ignition. Then when the furnace finally does start, it can do so explosively. So if the button won't reset, or quickly pops up again, it's time to call a professional repair service.
The reset button is typically located
inside the blower compartment on the side of the blower motor
. When should I press the reset button? First, you need to locate your circuit breaker and switch off the power supply to the furnace. Then, if you see that the button is up, push it to reset your furnace.
Why isn't my furnace firing up?
If your gas furnace initiates the start cycle but does not fire up, it's likely because of
a faulty, damaged, or dirty ignitor/sensor
. This is a very common furnace problem—you can try to clean the sensor and replace the ignitor.
How do you reset a furnace?
- First, turn off the power supply to the furnace by turning off the breaker in the circuit box.
- Locate the reset button on the furnace and press it to reset the furnace. …
- If the button is popped up, press it down.
- Return the cover to the blower compartment and turn the power on.
How do I know if my oil furnace ignitor is bad?
- The Furnace Stops Running. When a furnace won't run at all, check for a bad ignitor. …
- Your Furnace Blows Chilly Air. Unless you've set your thermostat to COOL, your furnace should not blow cold air. …
- Does Your Furnace Short Cycle? …
- A No Glow Ignitor. …
- We Can Replace Your Furnace Ignitor.
How do I get my furnace out of lockout mode?
Though lockout mode errors and resets do vary from manufacturer to manufacturer, most use a simple reset procedure that involves turning power off to the furnace for thirty seconds or longer and turning it back. The
interrupted power
supply clears the lockout and will allow the unit to attempt normal operation again.
How do you restart a furnace after running out of oil?
- Step 1: Fill the Fuel Tank. …
- Step 2: Hit the Reset Button. …
- Step 3: Turn off the Furnace. …
- Step 4: Collect Your Tools. …
- Step 5: Find the Bleeder Valve. …
- Step 6: Attach Nylon Tubing. …
- Step 7: Turn on the Furnace and Unscrew the Valve. …
- Step 8: Tighten the Valve.
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.
How do you reset a furnace control board?
- Find the switch mounted on or near the furnace and turn the power off. …
- Wait about 10 seconds.
- Turn the switch or breaker back on and check the furnace to see that it has power again.
How do you prime an oil furnace starter?
- Turn off the power to the furnace. …
- Check the furnace thermostat. …
- Locate the bleeder valve on your fuel pump. …
- Place a container beneath the bleeder valve to catch the fuel. …
- Turn on the power to the furnace. …
- Leave the bleeder valve open until a steady stream of fuel is established.
How do I reset my electronic ignition furnace?
To reset the ignition control module on an electronic-ignition furnace,
turn down the thermostat or turn off the power switch
. Listen for the sound of the spark or watch for the hot surface ignitor to glow. Next, make sure the furnace's flame sensor is clean.
How do I get my furnace to kick on?
You can try to get the furnace to turn on
by setting the thermostat to as high as it will go
. Make sure the furnace is on. There will be a power disconnect switch next to the furnace. Yes, even gas furnaces use electricity.
What do I do if my furnace isn't working?
- Step #1: Check your Air Filter.
- Step #2: Check Your Pilot Light.
- Step #3: Check Your Thermostat.
- Step #4: Check The Power.
- Step #5: Check Your Gas Supply.
Why is my furnace clicking but not turning on?
Most likely, your furnace is making a clicking noise and not providing heat because your furnace's spark igniter is trying to ignite your pilot light or burners but is failing to do so. In other words, there's
an ignition system malfunction that needs to be fixed
. Otherwise, your furnace won't start.
