The A5345 is specifically engineered for the Armstrong B Series Float and Thermostatic traps

This part is the standard inlet elbow for several Bloomfield units

or a restricted chimney flue rather than a mechanical defect in the switch

measure the resistance across the sensor leads and compare the value against a standard 10K Type II resistance chart relevant to your ambient temperature reading

though horizontal mounting is standard for ensuring precise outlet setpoints

Maxon 1089465 Flame Sensor R-410A The A5345 is specifically engineeredThe Maxon 1089465 Flame Sensor is a precision engineered industrial component designed for reliable flame monitoring in high demand combustion systems. Featuring an integrated Rajah E9 SSN connector, this sensor ensures a secure, high tension electrical connection, mitigating signal loss in harsh environments. As a critical industrial burner flame safeguard, it provides instantaneous flame detection to prevent hazardous fuel buildup in boilers,