loss of airflow

Use the integrated test button on the face of the control

unstable flame signals during low-fire modulation

this sealed model filter drier is optimized for systems utilizing R-410A

Lochinvar & A.O. Smith 100112614 Controller 319852-301 loss of airflowThe 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