preventing premature seize-up

Is the 4074EYL/U different from the 4074EYL

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What causes this manual reset switch to fail

this sensor provides the high-sensitivity flame rectification required to eliminate nuisance lockouts and "no heat" service calls caused by carbon-fouled or oxidized sensors

Lennox 17H03 Control Kit 322838-753 preventing premature seize-upThe Lennox 17H03 Control Kit is a professional grade non lockout universal ignition control kit designed for field service reliability in Lennox gas fired equipment. This specialized HVAC ignition module functions as a direct replacement for legacy ignition systems, providing consistent intermittent pilot ignition without the risk of permanent lockout during nuisance outages. Engineered for high demand environments, the Lennox 17H03 integrates