When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission.
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network
Lennox G40DF Control Board
The control board is designed to direct everything including the gas valve, the ignition igniter, most sensors as well as the air circulator all together. Your air handler will be unable to run at all without the board properly connected to the unit. Be absolutely sure upon choosing a board as a replacement due to so many small differences in systems. The brand of board you choose will have to match part numbers the brand and the model of the system you have installed.
Key symptoms of a defective primary control board
- There is a strange type of error code shown somewhere on the circuit board
- The unit is unwilling to do anything at all
- Everything has to be turned off and back on all the time for the furnace or AC to kick on
This site contains affiliate links for which I may be compensated
If you decide on picking up or ordering any Lennox G40DF replacement part, do your due diligence and make sure of the model number as well as make a visual inspection in order to be sure the right control board is the one being purchased. Installation of the control board is a piece of cake assuming you have the know-how and have the proper tools to get it done.
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated
