Lochinvar & A.O. Smith 100108690 Pressure Switch Els PW 29614 or a failing inducer motor

or a failing inducer motor that cannot reach the required RPM to close the diaphragm

significantly reducing field installation time by eliminating the need for separate sockets or external enclosures

Using a 115V motor on a 230V circuit will cause immediate electrical failure and potentially damage the integrated furnace control board

Technicians should verify fan blade pitch and airflow requirements before completing the replacement

mercury flame sensors must be replaced by cross-referencing the specific model number and bulb style to ensure proper mechanical fit and electrical switching

Lochinvar & A.O. Smith 100108690 Pressure Switch Els PW 29614 or a failing inducer motorThe Lochinvar & A. O. Smith 100108690 Pressure Switch is a critical safety and operational component designed for high efficiency combustion systems. This negative pressure switch is factory calibrated to a precise set point of . 15"wc (water column), ensuring the inducer fan is generating the specific vacuum required for a safe ignition sequence and continuous burner operation. Featuring a Single Pole Double Throw (SPDT) configuration, it provides