1. Home

Video:How to Fix a Gas Furnace: Electronic Ignition Furnace Problems

with Erick Noack

A gas furnace's electronic ignition is necessary to keep it burning, so it's a good idea to know how to fix it. Here is a video with tips for fixing the electronic ignition on your gas furnace.See Transcript

  • All Videos
  • All Home Videos
  • Home Repair Videos

Transcript:How to Fix a Gas Furnace: Electronic Ignition Furnace Problems

Hi, my name is Erick Noack. I'm an HVAC technician for ABC Plumbing, Heating, Cooling, and Electric. And we're here for About.com. Today I'm going to show you how to identify problems with your electronic ignition system on your gas fired furnace.

Types of Electronic Ignitions for Gas Furnaces

There are four basic types of electronic ignition furnaces for gas furnaces. It's either going to be direct ignition or an intermittent pilot. Now, the direct ignition or the intermittent pilot can be ignited using a hot surface ignitor or a spark ignition. The way to determine what type of ignition system you have is to open the front of the furnace and initiate a call for heat. You want to observe what happens in the burner area. If there's a very small flame that starts first, and then ignites all of the main burners, that's an intermittent pilot type of ignition. If the ignition happens and the main burners come on immediately, then that's a direct ignition.

Example of Hot Surface Direct Ignition

So what we just saw here was a hot surface, direct ignition. We saw an orange glow starting the cycle, that's the hot surface ignitor coming up to heat. After it's gotten hot enough, then the gas is released and that is what ignites the burners. They're either going to be a direct, meaning igniting the gas burners directly, or with an intermittent pilot. Now either one of those can be ignited using a hot surface ignitor or a spark ignition.

Have a Professional Fix Electronic Ignition

Once you determine which type of ignition system you've got, if you see it operating in a way that's not correct, it's best to call a service technician as soon as possible. It's important that a homeowner is aware of the way his system is supposed to operate when everything is normal. So that way when things do change, you can be aware of it and call for service before it becomes a bigger problem. It's going to help maintain the equipment, keep it lasting longer, keep it safe, and also reduce your energy costs.

Thanks for watching. To learn more, visit us on the web at About.com.

About videos are made available on an "as is" basis, subject to the User Agreement.

Promotional Feature: View this video series to learn how to take good care of your house.

©2014 About.com. All rights reserved.