Zone Valve Wiring

Hi all, I have a zone valve problem. I have two zone valves on a hot water baseboard heating system. The basement zone valve allways seem to be in 'open' position. Can anyone tell me what the problem might be? I think it is wired wrong. Can anyone tell me how the wires on a zone valve should be wired?
Thanks, Dave.
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Most zone vlaves have the wiring diagram printed right on the power head. Check it and see.....
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Describe the valves wires or terminals

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Sounds like your zone valve is stuck open. You can try hitting it to loosen. If that works it probably will not work for long. Sounds like you need a new zone valve. How old is the one you have, if it is anywhere close to 10 years most likely needs replacing.

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check its automatic/manual lever.
see also: http://content.honeywell.com/uk/homes/systems.htm#C%20Plan
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