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flue blockages
also identified as the 325-7AL-1212-NG02
simply press the button to restore power
Always verify if your application requires the fan to turn on (3F05 series) or the burner to turn off (3L05 series) at the temperature set point
Enhanced System Longevity: Reduces rapid cycling and thermal shock on furnace internal components
Lochinvar & A.O. Smith 100208558 Sensor 321894-708 flue blockagesThe Lochinvar & A. O. Smith 100208558 Sensor is a critical premix gas air arm sensor designed for high efficiency combustion systems. This OEM replacement part is engineered to monitor the air fuel ratio within the burner assembly, ensuring precise modulation and optimal thermal efficiency. As a high limit outlet sensor, it provides real time data to the control board to prevent overheating and maintain safe boiler operation. Constructed from