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What causes a Lennox 98M87 to fail
High-Temperature Durability: Constructed from specialized gaskets material that resists deforming or becoming brittle during extreme furnace thermal cycles
Always verify static pressure and temperature rise across the heat exchanger during troubleshooting
Standard clearance can become too tight as the components expand
York S1-024-25006-708 Pressure Switch What causes a Lennox 98M87The York S1 024 25006 708 Pressure Switch is a critical safety component designed for specific York, Coleman, and Luxaire gas fired furnaces. This single pole single throw (SPST) switch is factory calibrated to a 1. 20" WC setpoint, ensuring the inducer motor maintains optimal static pressure before allowing the ignition sequence to proceed. Engineered for precision, it features a 1 4" barbed hose connection for secure pneumatic coupling and standard
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