Have a furnace that has 3 zone flow water valves for all 3 floors of house with a thermostat on each floor. The basement/bottom floor is having issues. Need to know if you think I need a new thermostat or a new valve. When I turn up the thermostat, the valve will not "kick in" or turn over. When I manually move the bar on the valve, it will kick in or turn over, but only for about a minute. The baseboard will heat a little but then the flow valve shuts back off again.
I will need to call someone in to try to fix it, so I would like to have a little knowledge of what it could possibly be so I don't get stung for repair bill that is unncessary or too high.
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