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    renumidha's Avatar
    renumidha Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 27, 2008, 01:53 PM
    Rite aid thermonstat not working in one of 3 zones
    I have zoned heating and all the other zones are working except one thermostat the thermostat show on etc but there is no heat from the base boards... I have replaced the batteries in the thermostat as the battery light was blinking what else could this be ?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 27, 2008, 04:38 PM
    If this is a hot water system the valve is probably defective or the 24 volt power is missing the zone valve. If you have a electric meter you can test for the voltage at the valve. A bad water pump can also cause this also. NOTE the valve also has what is called a end switch. If that switch is defective the furnace/boiler I think in your case will not come on when that zone calls for heat.
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