leading to immediate system lockout and no heat calls

and 310) to seal the burner cover plate to the heat exchanger assembly

this robust aftermarket switch restores full operational control without the need for chassis modification

preserving water quality for downstream fixtures

or you can press the HOLD button for a permanent manual override

York 025-43553-001 Sensor 321894-706 leading to immediate system lockoutThe York 025 43553 001 Sensor is a critical flow measurement component engineered for heavy duty HVAC chilled water systems and industrial liquid circuits. This OEM replacement part features a standard 1 4" NPT connection, allowing for seamless integration into high performance York chillers and air cooled units. Designed to provide real time fluid velocity data, this high precision flow sensor ensures the control board receives accurate feedback to