Lennox 12M92 Pressure Switch 320735-701 Advanced Scheduling: 7-day programming allows

Advanced Scheduling: 7-day programming allows for precise setpoint adjustments to maximize system efficiency

reducing electrical consumption and cabinet vibration

or ignition lockout

Full System Integration: Includes the Trane CNT7650 board

the internal relay or circuitry has likely failed

Lennox 12M92 Pressure Switch 320735-701 Advanced Scheduling: 7-day programming allowsThe Lennox 12M92 Pressure Switch is a critical genuine OEM furnace safety component designed for specific Lennox gas furnaces and heating units. This combustion air pressure switch is factory calibrated to activate at 0. 70" WC (inches water column), ensuring the inducer motor is generating sufficient draft before the ignition sequence begins. As a furnace pressure switch replacement, the 12M92 monitors for venting obstructions or mechanical failures