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Lennox G40DF-36A-045 Control Board
Your air handler will be unable to be able to function unless this board is in connected and operational. The control board is constructed to control everything including the gas valve, the ignition igniter, most sensors as well as the blower all at once. A control board that you have chosen will have to match part numbers the brand and the model of the unit in question. Be very careful upon picking a replacement board due to the vast differences in models within certain brands.
Major warnings of a failing main circuit board
- The system has to be turned off and back on all the time for it to kick in
- The furnace or AC refuses to start correctly
- When turned on, there is a flashing error code suddenly appearing somewhere on the circuit board
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If you are going to be buying or purchasing a new Lennox G40DF-36A-045 replacement part do your best and double check the correct model and also make a visual comparison in order to be sure the correct control board is being ordered. There is no rule that says you have to install the part by yourself. Consult with a professional locally to pay to install it for you.
Feel free to download your manual for help.
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