Lochinvar & A.O. Smith 100110744 Switch 319847-401 both of which are serviceable

both of which are serviceable in-line without removing the valve body

it requires a shielded twisted pair to minimize EMI/RFI interference

Operating at 240Vac with a pressure rating of 0-0

Smith 100097250 Flame Sensor

Lochinvar & A.O. Smith 100110744 Switch 319847-401 both of which are serviceableThe Lochinvar & A. O. Smith 100110744 Switch is a critical OEM replacement component designed for integrated power control within high efficiency residential and commercial water heating systems. This water heater power switch resides on the main control panel, providing a direct interface for technicians to verify circuit continuity and manage system states during troubleshooting or routine maintenance. Engineered as a genuine A. O. Smith replacement