For contractors performing commercial HVAC maintenance

The most common causes are high line voltage (exceeding 125V)

Common Questions What models are compatible with the 62-25341-81

the P70MA-1 allows for MICRO-SET accuracy and external adjustability without needing to remove the cover

check the shaft for manual rotation

Lochinvar & A.O. Smith 100112659 Pressure Switch 326070-701 For contractors performing commercial HVACThe Lochinvar & A. O. Smith 100112659 Pressure Switch is a critical safety component designed for Series 200 201 Power Vent Heaters and high efficiency commercial gas water heaters. This genuine OEM replacement part features a precise 0. 37" WC (Water Column) set point, ensuring the inducer motor provides sufficient draft before allowing the ignition sequence to proceed. Engineered for normally open operation, it effectively monitors the vacuum in the