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  1. #1
    Join Date
    May 2007
    Location
    california
    Posts
    223

    Honeywell smart gas valve sv9500m 2674

    I looked at a Heil 90%furnace- about 15 years old today with one of these valves on it . The igniter and the pilot started and stayed lit . The main gas valve would not open. I read that there have been problems with the molex plug connections on these valves even some recalls a few years back. Looking for some tips

  2. #2
    Join Date
    Aug 2000
    Location
    Phila, PA
    Posts
    191
    Google it with keyword troubleshooting and you will find what you need.

  3. #3
    Join Date
    Mar 2004
    Location
    Illinois
    Posts
    6,959
    Quote Originally Posted by jmiles View Post
    I looked at a Heil 90%furnace- about 15 years old today with one of these valves on it . The igniter and the pilot started and stayed lit . The main gas valve would not open. I read that there have been problems with the molex plug connections on these valves even some recalls a few years back. Looking for some tips
    You have enough posts and have been around awhile, why not apply for pro membership?

  4. #4
    Join Date
    Feb 2008
    Location
    Kansas City, Kansas
    Posts
    476
    smart valves = junk
    Thomas aka...spymoocow
    Quote Originally Posted by garya505 View Post
    Ah, sorry I thought that's what he meant. An inch shouldn't make that much difference (at least that's what I always tell my wife).

  5. #5
    Join Date
    May 2007
    Location
    california
    Posts
    223
    Does the main gas valve get timed on or is it turned On from the signal from the flame sensor/ pilot???

  6. #6
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,320
    Sorry, this is not a DIY site. So we are not allowed to give out advise of this nature.

    Since answering your question in the open Residential Forums would be posting instruction for DIYers that may read this post later.

    If your in the trade, get your post count up to 15, and apply for Pro Membership.
    Then use this link Apply for Pro Membership

    Once accepted, you have access to the pro tech forums. Where you can ask and get answers to technical questions.

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    How many times must one fix something before it is fixed?

  7. #7
    Join Date
    Sep 2002
    Location
    Northeast Ohio
    Posts
    4,843
    Quote Originally Posted by spymoocow View Post
    smart valves = junk
    Sorry. I have hundreds out both the first and second generation with no higher incident of failure than any other valve type I service.
    A good HVAC tech knows how, an educated HVAC tech knows why!

    DEM


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