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The White-Rodgers 3L09-13 Limit Switch is a mission-critical board mounted 1/2" bimetal disc limit switch designed for rapid response and high-speed contact separation in residential and commercial furnaces
Its octal base configuration is a technician standard for reliable field service
What causes this resettable thermal switch to trip frequently
verify the specific feed tube diameter and clip configuration prior to installation
Lennox 27J02 Flame Sensor The White-Rodgers 3L09-13 Limit SwitchThe Lennox 27J02 Flame Sensor is a critical OEM replacement part designed for precision flame monitoring in high efficiency Lennox gas furnaces, including the G26 series. This straight style furnace flame sensor features a 13 16 inch rod and a 20 1 2 inch lead with a female spade connector, ensuring seamless integration with the ignition control board. Since the 27J02 is identical to 27J0201, it serves as a direct drop in for units requiring 24 VAC
