If no pilot flame is sensed after three trials (interspersed with 6-minute delays)

frequently used for ASCO general service valve replacements where consistent pressure differential is maintained

inconsistent cooling temperatures

Key Benefits for Technicians Fail-Safe Operation: Reliable mechanical spring return ensures the damper reaches its safety position during power interruptions

If the ignition module is sparking but the burner fails to light

Lochinvar & A.O. Smith 100110096 Limit Switch 326058-757 If no pilot flame isIn the field, a tripped Lochinvar & A. O. Smith 100110096 Manual Reset Limit Switch is a clear signal of an over temperature condition that requires immediate professional attention. This OEM high limit safety switch is engineered to monitor heat exchanger and combustion chamber temperatures, providing a critical fail safe by opening the electrical circuit when safety temperature thresholds are exceeded. Designed for high output Lochinvar boilers and