Lennox 90H83 Flame Sensor This manual reset rollout switch

This manual reset rollout switch is engineered with a fixed trip point of 290 degrees F

High-Precision Calibration: Reliable 150-180 degree F temperature range protects the heat exchanger from cracks caused by excessive thermal stress

A tripped 52M74 switch usually indicates restricted airflow

The Honeywell 14004406-910 serves as a direct replacement component for various commercial pneumatic thermostats

Always verify the orifice size and gas type of the furnace before installation

Lennox 90H83 Flame Sensor This manual reset rollout switchWhen you're dealing with a furnace that keeps cycling off after just a few seconds of ignition, the Lennox 90H83 Flame Sensor is often the culprit. This genuine HVAC OEM part is critical for the flame rectification process, converting the heat of the burner into a microamp signal that tells the ignition control board its safe to keep the gas valve open. Designed as a direct Lennox furnace replacement, the 90H83 features a 2. 5 inch element length with