Lochinvar & A.O. Smith 100318326 Pressure Switch 318172-701 Because the EA36YD057 is a

Because the EA36YD057 is a hard shut-off TXV

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

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

the internal diaphragm or solenoid coil has likely failed

Lochinvar & A.O. Smith 100318326 Pressure Switch 318172-701 Because the EA36YD057 is aThe 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.