Heatilator DV Won't Start

Tirsty1 Posted By Tirsty1, Nov 21, 2008 at 8:54 PM

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  1. Tirsty1

    New Member 2.

    Nov 21, 2008
    Heatilator direct vent gas fireplace (standing pilot ign) was installed with new home in '02. Has seen very little use. Pilot/gas have been turned off for the last year. Started pilot recently on first attempt. It stays lit-no problems there. Turn on wall switch and the burner won't ignite. Nothing happens, no noise or gas smell. Breaker for on/off switch is good. Unit worked fine last time it was used. Any suggestions?
  2. jtp10181

    Minister of Fire 2.

    Feb 26, 2007
    Madison, WI
    Could be:

    1) Weak thermopile
    2) Loose connection at gas valve
    3) Loose connection at wall switch
    4) Bad wall switch
    5) Bad gas valve
    6) Spider nest in burner supply line

    I think thats about it...
  3. Inside Guy

    Inside Guy
    Member 2.

    Nov 14, 2008
    Make sure you turn the valve knob to "on"... it's easy to forget to turn the valve from the "pilot" setting to the "on" setting once your pilot is lit. If you're a bit handy, a quick test is to remove the wall switch as a possible problem. On the valve, you'll have Th, TP, and THTP. With your pilot lit and the valve knob turned to the "on" position, use a paper clip to jump the connection between the "TH" and "THTP" screws. If it lights then, you might have a bad connection in your wall switch wire.
  4. DAKSY

    Patriot Guard Rider Moderator 2.
    Staff Member

    Dec 2, 2008
    Averill Park, NY, on Burden Lake II...
    Pull the burner tube & use a 1/2" or 13mm socket/wrench to remove the burner orifice. Run a "Q-tip" into the small hole behind said orifice...Them damn spiders can make a nest so perfectly round & white, that you'll think it came from the factory that way...Had 3 units with that same issue this past fall...Them spiders seem to LOVE the Mercaptan that is used to flavor the odorless gas...They get in the orifice, make a nest, lay their eggs & die...
    Leaves us with a head-scratcher of a problem, for sure...
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