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Troubleshooting an Electronic Ignition Gas Furnaces – Repair Basics

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Troubleshooting an Electronic Ignition Gas Furnace Reapir Basics

Electronic Control Board for an Electronic Ignition Gas Furnace

Electronic ignition for gas furnaces is the modern way for furnaces to light the main burners on modern gas furnaces. Electronic ignition gas furnace technology has evolved from the standing pilot gas furnace ignition systems that continue to be used today however there are less and less standing pilot gas furnaces used today.  If your furnace is not working and you want to troubleshoot an electronic ignition gas furnace system it is important to make sure you know which type of ignition system you have for your furnace.  Additionally there are different types of electronic ignition gas furnace systems and it is important to differentiate between the types of electronic ignition systems before repairing an gas furnace electronic ignition. We will break it all down for you in this series article.

Most of the major brands for HVAC equipment produce electronic ignition systems for their furnaces or they use a popular recognized brand of electronic ignition such as White-Rodgers, Honeywell, HeatCraft, or Fenwal controls. With any type of mechanical equipment always follow the manufacturers instructions and all safety guidelines and practices including common sense. Even for HVAC technicians repair of HVAC equipment can be frustrating at times to if you are a DIY you may consider calling in a professional. When you are dealing with furnaces safety is very important especially when dealing combustible gases. Be very careful always use common sense and safety first.

If you have a standing pilot gas furnace it is likely an older furnace and this article will not apply to you. The quickest to tell between a standing pilot gas furnace and a modern electronic ignition gas furnace is to look at the gas valve. A valve for a standing pilot furnace will have three settings on the valve knob. Off – On – Light are the three settings where the “Light” is the setting on a standing pilot valve to light the pilot light. An electronic ignition gas valve will only have 2 settings – Off and On. The electronic ignition furnace is basically an automatic ignition furnace whereas the standing pilot furnace, which lights the main burners automatically, requires the pilot light to be lit before the main burners will fire. Lighting the pilot for a standing pilot system is a manual operation while the electronic ignition furnace is completely automatic. If you have the standing pilot furnace then this article is not for you. Please check back later for an updated article on standing pilot furnaces. Understanding this difference between the two different systems is important as you must troubleshoot the correct system.

 

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Troubleshooting an Electronic Ignition Gas Furnaces – Repair Basics

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