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no heat upstairs

Posted by Harold on December 1st, 2002 02:22 PM
In reply to heating problem by Bruce Valentine on December 1st, 2002 12:58 PM [Go to top of thread]

The zone valve might have stopped working (there is usually a manual lever to open it until it is repaired,) the thermostat might have a problem, the wire might be broken, the water pressure might not be high enough in the system to keep water up in the system so the upper level is air bound.

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