Lochinvar & A.O. Smith 100318326 Pressure Switch 318172-701 this replacement reservoir lid maintains

this replacement reservoir lid maintains the structural integrity of the water tank system

leading to coil burnout due to the lack of an inductive load

a 914-0036-03 capacitor should be tested with a multimeter on the MFD setting

the internal diaphragm or solenoid coil has likely failed

Lochinvar & A.O. Smith 100318326 Pressure Switch 318172-701 this replacement reservoir lid maintainsThe Lochinvar & A. O. Smith 100318326 Pressure Switch is a critical safety component designed for precise water pressure monitoring in high efficiency Noble Fire Combi Boilers and NKC series units. Engineering to detect low water pressure conditions, this switch acts as a primary fail safe, preventing dry fire scenarios and potential heat exchanger damage by ensuring the burner circuit remains open unless sufficient system pressure is established.