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 CB29M-21 Defrost Sensor Board
The defrost sensor board will begin an important defrosting cycle if necessary, to get rid of the frost that collects on the outdoor unit. It relies on a temperature sensor that can be found near the condenser, in order to verify when to initiate the defrosting cycle.
Some clues of a weakening outdoor defrost sensor board
- Defrosting refuses to initiate even when there is a large quantity of frost that has built up
- The HVAC system control board may show an error number referring to a failing defrost control board
- The HVAC system could not work due to the fact of the frost issue
This site contains affiliate links for which I may be compensated
Before you decide on buying or ordering any Lennox CB29M-21 part, do your due diligence and cross-check the model number as well as make a visual inspection in order to be sure the right defrost sensor board is the one being purchased. There is no rule that says you have to install the part by yourself. Search for a pro in your town or city to replace the part.
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated
