Manual Lockout Safety: The manual reset mechanism forces a physical diagnostic check of the system after a high-pressure event

this service valve assembly typically includes the 7/8" sweat valve

Common indicators include high superheat

technicians rely on this electromagnetic relay to resolve common service issues like chattering contacts

Testing for continuity across these terminals while the 24V coil is de-energized will confirm if the sequencer requires replacement

Robertshaw 720-472 Gas Valve Els PW 29614 Manual Lockout Safety: The manualThe Robertshaw 720 472 is a robust 24V step opening gas valve designed for high performance heating applications. Featuring a 1 2" NPT inlet and outlet, this dual voltage operator provides a regulated 3. 5" W. C. natural gas output, ensuring consistent manifold pressure for efficient combustion. This model is the direct replacement for the 7200ERCS 2, engineered for versatility in intermittent pilot ignition systems. The 720 series accommodates