New replacement furnace gas valve is stuck open.

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Old 01-07-16, 08:24 PM
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New replacement furnace gas valve is stuck open.

This is my first thread . Just replaced a Honeywell redundant gas valve on 20+ old Carrier package unit. When I finished and turned the gas on the gas was coming out of burners. This is before the unit had electic power. Please help.
 
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Old 01-07-16, 08:58 PM
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Welcome to the forums.


Is that a brand new valve ?
If it is and you have NO wiring connected to it....send it back.
 
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Old 01-08-16, 08:20 AM
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Yes it is a new direct fit valve.
 
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Old 01-08-16, 12:33 PM
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<<Is that a brand new valve ?
If it is and you have NO wiring connected to it....send it back. >>



Yes.

Unfortunately, the time when a part is most likely to fail is when it's new, right out of the box.


Hard to believe that could happen! Furnace gas valves have two redundant gas valves that BOTH have to open to allow gas to flow, just to prevent the kind of problem you describe.
 
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Old 01-08-16, 01:19 PM
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After I replaced valve was I to do anything special to activate the valve itself? After I installed and connected the wires I turned power back on and opened gas to valve, gas was going thru to burners.
 
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Old 01-09-16, 01:25 AM
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After I installed and connected the wires I turned power back on and opened gas to valve, gas was going thru to burners.
So you had it wired AND it was not closing. Did you check to see if your were supplying it with power ?????

Disconnect the wiring to the valve....is it still passing gas ?
 
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Old 01-09-16, 07:25 AM
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It is possible that the valve is defective but for as many checks as they go through when manufactured the odds are good there is another possibility.

Many sales outlets for this type of part will not accept returns from diy'ers so you need to recheck everything.
Is it installed backwards?......possible even for an "expert"!
What is the inlet pressure?......you need to carefully measure it because you could have a bad upstream pressure regulator.
Will it pass gas with all wires removed?
Was there any indication when you un-packaged it that it might have been a returned item?
Is there any indication that when you installed it there was dirt in the line that may have been dislodged and plugged valve?
Is it possible that you connected 24 volts to a milli-volt valve?
Is it possible that you connected high voltage to it and smoked it?

These are all questions that could be asked if you try to return it.
There is probably more but I'm out of ideas.
 
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