Rheem-Ruud 42-21268-04 Door Switch Els PW 17895 this sensor operates by utilizing

this sensor operates by utilizing the ionized particles in the gas flame to conduct a microamp signal back to the integrated furnace control board

providing a reliable defense against flame rollout

Its mechanical ruggedness handles resistive loads up to 15A and pilot duty B300 applications

As a direct replacement for 8201-045

Verify the inducer motor is reaching full RPM and check the barbed connection and venting for obstructions

Rheem-Ruud 42-21268-04 Door Switch Els PW 17895 this sensor operates by utilizingThe Rheem Ruud 42 21268 04 Door Switch is a critical safety component designed for precise interlock control in residential and commercial furnaces and air handlers. For technicians servicing Rheem, Ruud, WeatherKing, and Corsaire HVAC systems, this SPST (Single Pole Single Throw) safety switch is the primary mechanism for breaking the electrical circuit when the blower compartment door is removed, mitigating risk of electrical shock or mechanical