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or the unit glowing but failing to light the main burner
reducing installation time during emergency repairs
the Fasco D540 is the manufacturer-designated direct replacement for the 9638
Most OEM replacement motors require a specific MFD-rated run capacitor
Lochinvar & A.O. Smith 100112614 Controller 319848-301 or the unit glowing butThe Lochinvar & A. O. Smith 100112614 Combined Controller is the primary electronic control board managing combustion, temperature regulation, and safety protocols for BTH 400A Series 104 commercial water heaters. As a critical OEM replacement part, this integrated controller replaces legacy part number 9008219005, ensuring seamless BTH 400 104 compatibility. Designed specifically for natural gas water heaters, it monitors internal flow, pressure, and
US$ 121.99
US$ 85.00
US$ 100.00
US$ 90.00
