heat won't turn down


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Old 01-19-09, 06:21 AM
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heat won't turn down

Hi - one heating zone in our house is stuck above 80 degrees. I turned off the thermostat, but no luck. Any ideas? Probably need more info to diagnose. Thanks

 
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Old 01-19-09, 03:04 PM
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If you have 1 zone then you most likely have a circulator and flow control valve set up and when the guts inside the flow control valves go bad or get loaded up with crud, it will allow hot water to gravity through the heating system resulting in an overheating condition.
 
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Old 01-19-09, 06:04 PM
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Benny, you said "one heating zone in our house" ... does this mean that you have ONLY one zone? or that ONE of SEVERAL is malfunctioning?

If it's one of several, how is the system zoned? Electric valves? or individual circulators?
 
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Old 01-20-09, 10:12 PM
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for bennyg hot zone

sounds like you have more than one zone. if you have zone valves the one for the hot zone is most likely sticking open. could be from crud or short in electrical part of it. whatever the case, change the zone valve. cheap ten minute fix. before you do that unhook one of the thermostat wires first for HA HA's. if this closes the valve then change the thermo. they do go bad.
 
 

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