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Lennox G40UH-60D-155 Control Board
Heating and cooling systems will not even operate whatsoever lest the main control board is installed. The control board is designed to command the gas valve, the igniter, the flame sensor as well as the air circulator all at once. You must do some research when you choose a replacement due to variances between models and types. The selected board must have a matching part number consistent with both the make and model of the unit in question.
Do you know if your main board is not working right?
- Could be an a certain error code being displayed on the front of the control board
- Everything needs to be reset rather frequently in order to continue running
- AC or heating system is not able to operate well
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