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 XC21-036 Control Board
Heating and cooling systems will not even run at all lest this board is in its proper place and configured for your unit. The control board is designed to oversee everything including the gas valve, the igniter, all the sensors as well as the air circulator all at once. The correct control board should match the brand and the model of air handler system you have. It is imperative that you select wisely when you are choosing a replacement board because of the many variances of models and types.
Major indications poorly running main board
- The system board needs to be reset many times a week in order to continue running
- There seems to be flashing code being shown on the board
- Entire unit declines to go whatsoever
This site contains affiliate links for which I may be compensated
If you are going to be buying or purchasing any Lennox XC21-036 replacement part do your best and cross-check the correct model and also make a visual comparison so that you are positive that the correct replacement control board is the one being purchased. It is easy to replace a control board on your Lennox XC21-036 as long as you have previous experience and have the time and tools to replace it.
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated
