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
Carrier FX4BNF042000 Limit Switch
Limit switches are crucial due to the fact that if the air inside the furnace is too cool the you will lose all the heat as the air flows through the ducts. The limit switch is a type of sensor switch in the heat exchanger that senses, or governs, if and when the air is actually warm enough for the blower to be activated.
Do you know if your limit switch has to be replaced?
- System will not begin the ignition sequence or run well longer than 30 seconds
- The HVAC system begins to run inconsistently from time to time
This site contains affiliate links for which I may be compensated
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated