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
Heat Controller SMA 12 Limit Switch
One big reason why limit switches are designed that way is because if the warmed air is too cool then you will never get hot air through the ducts. A normal limit switch is a type of sensor switch in the heat exchanger that senses, or governs, when the heated air is actually warm enough for the main blower to kick in and circulate the air.
What warnings should I watch out for to know if my critical limit switch needs replacing?
- The system begins to ramp up but then stops on more than one occasion
- The HVAC system will not begin or continue to run longer that five minutes
This site contains affiliate links for which I may be compensated
If you decide on picking up or ordering a new Heat Controller SMA 12 replacement part do your best and make sure of the model number as well as make a visual comparison in order to be sure the right limit switch is the one being purchased. There is no need to replace the part all by yourself. Hire someone with experience in your town or city to do the job for you.
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated
