Honeywell Zone Valve V8043E1012

Raise the setpoint on the zone thermostat above the room temperature to initiate a call for heat.

Did the valve open and the auxiliary switch make the circuit to the circulator or other valve at the end of the opening stroke?

Lower the setpoint on the zone thermostat below the room temperature.

Did the valve close and the auxiliary equipment stop?

This valve should be serviced by a trained, experienced service technician.

NOTE: Honeywell zone valves are designed and tested for silent operation in properly designed and installed systems; however, water noises can occur as a result of excessive water velocity or piping noises can occur in high temperature (higher than 212° F [100° C]) systems with insufficient water pressure. Valves are designed for normal cycling operations. Product life will be shortened if energized continuously.

NOTE: These hydronic valves are not suitable for use in open loop systems where there is air exposure.

If the valve is leaking, drain the system and check to see if the O-ring needs replacing.

If the gear train is damaged, replace the entire powerhead assembly. See the Installation section.

If the motor is burned out, replace the motor. See Replacement Parts list in the TRADELINE® Catalog.