This is a 2-stage gas valve and requires a 2-stage thermostat and control board to operate correctly

How can I identify a failing HE365 fan motor

Debris-Resistant Design: The sealed housing protects internal contacts from dust and insects

this motor is strictly Clockwise (CW) rotation as viewed from the shaft end

the VAL5023 serves as a direct replacement part that restores system balance and eliminates common issues like coil freeze-ups or liquid slugging

Lochinvar & A.O. Smith 100110806 Switch 323269-701 This is a 2-stage gasThe Lochinvar & A. O. Smith 100110806 BTH 400 Blower Prover Switch is a critical safety component designed specifically for Cyclone BTH 400 commercial water heaters. This normally open, positive air pressure switch acts as a safety interlock, verifying that the combustion air blower is generating sufficient airflow before the ignition sequence is allowed to proceed. By "proving" the blower's operation, it prevents the gas valve from opening if exhaust