Spartan Valves ME-4840B Actuator 319847-401 the first check is likely

the first check is likely fouled or the diaphragm is compromised

When executing a furnace heat exchanger replacement

and the Orange wire is for 240Vac

3-inch probe length

this is a Programmed Selectech Motor

Spartan Valves ME-4840B Actuator 319847-401 the first check is likelyThe Spartan Valves ME 4840B Actuator is a critical component for technicians managing terminal unit and zone valve applications. This 24Vac spring return proportional actuator is engineered for precise modulation, utilizing a microprocessor based control system to drive 2, 3, or 4 port valves. Operating on a 0 10Vdc control signal, the unit features an internal AC hysteresis brushless motor that provides reliable 28lbs (120N) of output force. The