as it utilizes a 4-way pilot valve to drive the PTFE-lubricated main slide

If the switch remains open while the inducer is at full speed

the system running continuously without reaching the setpoint

Key Benefits for the Contractor: Direct OEM fit for York S1-025-29043-000 ensures compatibility with Luxaire and Coleman burner profiles

or operates under low voltage or long line set conditions

Lochinvar & A.O. Smith 100208465 Control Board Refrigerant as it utilizes a 4-wayThe Lochinvar & A. O. Smith 100208465 Control Board is a critical OEM replacement part designed for high efficiency commercial water heaters and hydronic boilers. Engineered as a direct substitute for the RLY20001 and RLY20001K legacy boards, this integrated ignition control circuit manages vital system sequences, including flame rectification, temperature regulation, and draft inducer timing. It serves as the primary logic hub for monitoring pressure