Rheem-Ruud 62-22578-01 HSI Module 30067439-890 What is the difference between

What is the difference between the K-370 and the D25519

or down-drafting

such as a dirty 1-inch pleated filter

Enhanced Protections: Features an onboard 3-amp fuse and solid-state fan blower control logic to prevent common failures associated with mechanical timers

Common Questions Is the White-Rodgers 755-1 a direct replacement for the 755-11

Rheem-Ruud 62-22578-01 HSI Module 30067439-890 What is the difference betweenThe Rheem Ruud 62 22578 01 HSI Module is a critical 120 24V electronic hot surface ignition control designed for precise burner sequencing in residential HVAC units. This OEM certified module manages the 34sPP (34 second pre purge) cycle to clear the combustion chamber of residual gases before initiating the 8sTFI (8 second trial for ignition) window. As a veteran grade HVAC ignition control board, it utilizes a dual voltage architecture (120V for the