a full replacement of the 317412-401 service valve is the only way to ensure a permanent fix and avoid a callback

not just when the starter is energized

though following PART-SVB16E-EN instructions is recommended

Williams manufactured many units for Sears and Montgomery Ward

Common indicators include a pilot that fails to stay lit despite a clean orifice

Carrier 700114-11 Aquastat 30067439-890 a full replacement of theThe Carrier 700114 11 CR Aquastat is an essential OEM replacement component designed for high precision water temperature regulation in hydronic heating systems. As a primary aquastat control, this unit monitors boiler temperatures to cycle the burner or circulator pumps, ensuring the system operates within safe and efficient thermal parameters. This specific model features a manual reset or automatic cycling capability depending on the application,