the pressure switch is likely stuck open or failing to sense the -

this key is the direct replacement for standard Honeywell locking covers and is technically identical to the Honeywell 301572A/0767/U model number

This often indicates the sensor is fouled or unable to send the necessary flame rectification signal back to the control board

it can be converted using the appropriate Robertshaw LP orifice spud included in many universal kits or sourced separately

making it suitable for indoor use without a dedicated vent line to the atmosphere

Amana-Goodman 10727920 Pressure Switch Els PW 17895 the pressure switch is likelyThe Amana Goodman 10727920 Pressure Switch is a critical OEM furnace replacement part designed to maintain safe combustion parameters. As a single stage pressure switch, it monitors the negative pressure generated by the draft inducer motor, ensuring that the flue gases are properly venting before the ignition sequence initiates. This switch acts as a primary safety interlock; if the inducer motor vacuum fails to reach the calibrated set point, the