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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?
- There may be a numbered error code randomly appearing on the control board
- The unit does not operate whatsoever
- Power to the control board has to be turned off and back on many times a week for it to kick in
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