Rheem-Ruud 42-21593-02 Sequencing Relay This furnace flame sensor acts

This furnace flame sensor acts as a primary safety component

this is the genuine Rheem OEM replacement

Using a multimeter set to continuity

preventing nuisance drop-outs in gas-fired equipment

Key Benefits Precise 25A Compatibility: Specifically designed to fit the interface between the arm assembly and float housing head on all Series 25A units

Rheem-Ruud 42-21593-02 Sequencing Relay This furnace flame sensor actsFor service technicians managing multi stage electric heat or residential blower delays, the Rheem Ruud 42 21593 02 Sequencing Relay functions as a critical OEM control component. This 24V SPDT Sequencing Relay is engineered with a C65 95 timing specification, ensuring precise contact closure and opening cycles to prevent line side surges during startup. The device features a single pole double throw configuration, allowing for versatile field wiring