How does furnace ignitor work

You could also, accidentally make the problem harder and more expensive to fix. Most of the time, modern furnaces are reliable and have very few problems. However, every so often, an issue will occur, preventing the furnace ignitor from igniting. If this happens, hopefully, the tips above will help you to determine what the problem is without too much stress. Otherwise, you could end up with a cold house, no hot water, and burst water pipes, not to mention a hefty bill for the damage.

Your email address will not be published. Schedule Online Take a Look at the Air Filter As mentioned above, sometimes the cause of a furnace ignitor failing to ignite is due to a safety issue, such as a clogged air filter, for instance.

Call an Expert Should all else fail, the best thing to do is call in an expert. Leave a Reply Cancel reply Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

For Emergency Service, please call Close Font Resize. Keyboard navigation. Readable Font. Choose color black white green blue red orange yellow navi. Underline links. Highlight Links. Some furnaces even have labels on the doors. Remove the burner door from the furnace and temporarily set it aside. Switch the igniter to the "off" position and wait at least five minutes before turning it back on. Some furnaces may have a red button that you have to push to reset it.

Follow the specific instructions for resetting your specific furnace in the owner's manual. Replace the burner door. Confirm that it is seated correctly, as most furnaces have a switch that pushes in when the door is installed correctly. This safety switch must be engaged for the furnace to work. Turn the main power back on at the electrical panel, or turn on the circuit breaker for the furnace. Adjust the thermostat to the appropriate heat settings and turn it on. If the unit comes on but no heat comes out, immediately turn off the thermostat.

The igniter is not working properly if the heat does not come on after resetting it. Here are some of the common causes of HSI failure:. Most modern furnaces with electronic ignition systems have an integrated circuit board that controls many sophisticated processes. The boards can perform self-diagnostics and provide failure codes, similar to the diagnostic computer in your car.

If a failure occurs, LED lights on the control board light up in a blinking pattern to indicate a specific failure code. The codes are listed in a chart in the owner's manual and usually on a door or access panel on the furnace.

Control boards are usually located inside the blower compartment of the furnace. If the board has blinking lights, refer to the chart to decipher the code and help identify the problem area with the furnace. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile.

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