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[husky 555]

Will be starting up my owb Nov. 1, but right now I am having an issue with my first floor zone.  The past couple of days my first floor has been heating really warm.  Last night I turned off the tstat. and even removed its batteries thinking this morning the first floor would be cold.  However, this morning I could tell that the first floor was still receiving heat .  Could it be that the zone valve has gone bad?  I appreicate any thoughts on this issue before I call the heating man.

[Scott7m]

Will be starting up my owb Nov. 1, but right now I am having an issue with my first floor zone.  The past couple of days my first floor has been heating really warm.  Last night I turned off the tstat. and even removed its batteries thinking this morning the first floor would be cold.  However, this morning I could tell that the first floor was still receiving heat .  Could it be that the zone valve has gone bad?  I appreicate any thoughts on this issue before I call the heating man.

Def sounds like it coulda stuck open

[husky 555]

Any ways to close it?.  Or am I looking at replacement?

[slimjim]

Try opening it manually and flushing it like you would if you were purging air from that zone,at the same time give it a good tap on the valve with a wrench, this may dislodge anything stuck in the valve, the zone valve is normally closed with lack of power so it is not wiring or a bad valve, it is stuck open for whatever reason. it could also be a short in the TT wires, try pulling one wire off at the zone valve relay for that zone and see if it closes, if it does, there is a short somewhere.