This is often a sign that the Reznor 50418 Limit Switch is stuck in the "open" position

Key Benefits Integrated Shunt Trip: Features a factory-installed 120V shunt trip for remote tripping capabilities

always cross-reference your specific Carrier model's wiring schematic to ensure pin-to-pin compatibility with older CPM-1 variations

it maintains factory-balanced specifications to minimize vibrational stress on the blower motor bearings

Lennox 10M15 Rain Shield 323269-701 This is often a signThe Lennox 10M15 Rain Shield is a critical environmental protection component engineered for Lennox outdoor HVAC units, specifically designed to mitigate the risks of operational failure caused by moisture intrusion. Constructed from heavy duty galvanized steel, this OEM Lennox part serves as a robust barrier against rain, snow, and falling debris, preventing premature corrosion of internal electrical systems and motor bearings. As any veteran tech