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Lennox G43UF-48C-090 Control Board

The control board is designed to command everything including the gas valve, the ignition igniter, all the various sensors and the blower all in one unit. HVAC systems will not run at all lest the main control board is correctly installed. The board that you will choose will have to be compatible with both the brand and specific model of HVAC system. It is of utmost importance when you are choosing a replacement board due to variances between HVAC systems.

What warnings are present when my primary control board is on its last leg?

Check eBay to see if your control board is in stock!
If you decide on picking up or ordering, do your due diligence and make sure of the model number and also make a visual inspection so that you are positive that the correct control board is being ordered. Once you have the part to install the replacement part alone. Locate a pro in your town or city to do the job for you.
Feel free to download your manual for help.
Check eBay for your control board!