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Lennox G40UH-36B-090 Ignition Control Board
The main ignition control board may control the gas valve, the igniter and a few other devices. It has been a very important safety feature that some companies have moved to be a standard part of the main board for enhanced safety.
Key signs of a faulty major ignition board
- The ignition cycle refuses to start even when the thermostat kicks it on
- Any other problem within the system is researched and comes to be OK
- Signal from remote thermostat does not get to the control board
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Before you decide on buying or purchasing do your best and make sure of the model number as well as make a visual inspection so that you are positive that the correct ignition control board is the one being purchased. There is no rule that says you have to install it yourself. Pay a professional in your area to do the job for you.
Feel free to download your manual for help.
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