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Lennox G40UH Ignition Control Board
Another safety feature is the ignition control board, which may control the main gas intake valve, the ignition ignitor and other safety devices built into the system. It has always been a vital circuit board that has now become a part of the main control board instead of a separate board.
Hints your main ignition board is not going to last much longer
- HVAC ignition cycle can not start no matter what
- Signal from primary thermostat does not reach the control board
- Any other device within the heating and AC system checks out OK
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Before you decide on buying or purchasing a replacement ignition control board for your Lennox G40UH, do your due diligence and double check the correct model and also make a visual inspection in order to be sure the correct replacement ignition control board is the one being purchased. You do not need to replace the part all by yourself. Pay a professional in your community to pay to install it for you.
Feel free to download your manual for help.
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