Watts 0275614 Relief Valve 318518-761 If the switch remains open

If the switch remains open at room temperature or if the furnace blower runs continuously while the burners fail to ignite

Universal Compatibility: Fits primary Carrier P282-0431A specifications and replaces multiple legacy part numbers

As an automatic reset limit switch

if there is visible evidence of contact arcing

rather than the mechanical motor itself

Watts 0275614 Relief Valve 318518-761 If the switch remains openThe Watts 0275614 (Model 375XL) is a high capacity pressure relief valve designed specifically for hot water heating boilers and hydraulic systems. Featuring a 1 1 4 inch NPT threaded inlet and a 1 1 2 inch NPT outlet, this valve is factory set to a 35 PSI relief pressure, providing critical overpressure protection. Utilizing a bronze body construction and a silicone rubber disc, it ensures a tight seal and reliable reseating after discharge. For