What causes premature diaphragm failure in G-Series units

this dual-function switch ensures the inducer motor is generating sufficient static pressure to safely vent flue gases before allowing the ignition sequence to proceed

Common issues include carbon buildup (sooting)

By maintaining optimal RPM output

Lochinvar & A.O. Smith 100165933 Pilot Assembly 321702-401 What causes premature diaphragm failureMaintain peak performance in gas fired heating systems with the Lochinvar & A. O. Smith 100165933 Pilot Assembly. Designed as a direct fit OEM replacement part, this standing pilot assembly is engineered specifically for compatibility with Lochinvar boilers and A. O. Smith water heaters, including applications formerly utilizing the PLT3026. As a veteran technician knows, a reliable pilot burner is the frontline of system safety; this assembly