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Heatilator Constitution auto fan inoperative

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by topknot, Jan 7, 2013.

  1. topknot

    topknot New Member

    Joined:
    Jul 9, 2012
    Messages:
    18
    Loc:
    North Central Missouri
    I had my FP installed in late November and have had several fires in it - it works great - but for one thing. The fan only works when I flip the switch. It does not come on in the automatic (temperature regulated) mode.

    The local distributor told me via email to call the Heatilator customer service number and have them "walk me through" troubleshooting. So, I called them and the CS rep who answered the phone told me to call the distributor again and that they should troubleshoot it... Left a voicemail for the distributor point of contact today and waiting for a return call. I am not too worried, just hoping someone at some point helps me out. I paid a lot for this unit.

    I finally got the firebox all clean and vacuumed out yesterday and got the access panel on the firebox floor opened up. All wires look to be connected.

    I do have one question though... What I assume to be the snap disk (mounted directly under the firebox floor plate) is loosely held in it's bracket. It is not making constant contact with the steel floor plate. You can rattle it around. Is it supposed to be held firmly against the plate?

    Here is a picture looking at the bracket/switch from the side:
    [​IMG]

    Here is another straight on (bottom of the floor plate):
    [​IMG]

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  2. PLAYS WITH FIRE

    PLAYS WITH FIRE Minister of Fire

    Joined:
    Jan 28, 2011
    Messages:
    639
    Loc:
    Pittsburgh, Pa.
    Yes it is to be in direct contact. Maybe you can bend it closer. I think some folks here use magnets to hold it closer ? Be wary as one side of the disk will have 120vac at least!!! Better to unplug first!
    topknot likes this.
  3. topknot

    topknot New Member

    Joined:
    Jul 9, 2012
    Messages:
    18
    Loc:
    North Central Missouri
    Haha, thanks PWF! I did disconnect it and bent the bracket so the disk is in contact ith the base plate now.

    Before I replace the firebrick and light another fire, I'm going to wait for the distributor to call me back and see if he has any other thoughts. Will post back though when I get this sorted.

    Thanks, and thanks to Village Idiot for the suggestions.
  4. topknot

    topknot New Member

    Joined:
    Jul 9, 2012
    Messages:
    18
    Loc:
    North Central Missouri
    OK, a quick update. The distributor called me back and I told him what I had read here, and he confirmed that it was most probably the issue.

    Bending the bracket so that the snap disk was in direct contact with the steel baseplate did indeed "fix" the problem. The fan kicked on and later shut off without a problem during my test burn last night.
  5. northernontario

    northernontario Member

    Joined:
    Sep 28, 2010
    Messages:
    120
    Loc:
    Ontario
    fyi.. on newer epa freestanding stoves (atleast all the stoves I've seen built by SBI Canada), the snap disc doesn't touch the steel on the stove. Instead, they have a solid ring welded to the backside of the stove which creates an air chamber for the disc to sit in. Means the blower doesn't come on till the stove has warmed up.

    Just something to consider... having the snap disc touching the metal of the stove may cause your blower to come on too soon.

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