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no voltage to thermostat on hot water boiler system
One of the zones on my boiler stopped working, the other 2 work fine. There is no 24 volts to the thermostat on the bad zone. The zone valve manually opens ok. Do I need to replace the zone valve motor? Does the zone valve motor send the 24volts to the thermostat or should I be looking at something else? The other 2 thermostats and zone valves are working ok.