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Failed ignition on triangle tube pt 110

wrxz24wrxz24 Posts: 266Member
In the last 800hrs, I have gotten 4 failed ignitions. It happens when there is a dhw priority call. Not sure what the issue is. The boiler fires after pushing the reset button.
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Comments

  • DevanDevan Posts: 138Member
    Combustion, igniter, or board.

    First have someone check the boiler with combustion analyzer and make sure it is within specs.

    If that is ok, change igniter with "short" porcelain as reccomended by TT. They've been having problems with igniters with longer porcelain coating too far into flame. You'll know when the ignitor is removed, it will have cracks in the porcelain.

    If those fail, last step is changing the board, TT also has a newer version board for the Trimax, older boards had ignition problems, new board would have green dot sticker on it.

    After any changes, check combustion again!
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  • wrxz24wrxz24 Posts: 266Member
    I have the trimax installed

    In May of 2013. It has worked great up until 800 hrs ago when it first failed to light. Now it has happened 2 more times yesterday.

    One thing I have noticed that I can hear a knocking/thud sound soon after it lights sometimes.
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  • Robert O'BrienRobert O'Brien Posts: 2,234Member ✭✭
    edited April 2014
    What Devan said!

    They have a new ignition cable also,the noise you are hearing is a delayed ignition
    Post edited by Robert O'Brien on
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  • wrxz24wrxz24 Posts: 266Member
    The sound I am hearing

    Is after the boiler has been running. I will try to pinpoint when the sound is made. If i had to guess, 10 seconds after the boiler fires and the sound comes from the bottom of the cabinet.
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  • ZmanZman Posts: 2,222Member ✭✭✭
    ignitor

    There was a bad batch of ignitors from tt.

    I would start there.

    Carl
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  • wrxz24wrxz24 Posts: 266Member
    Is there a way to check

    And see if my boiler had one of the bad ignitors? So far so good the last 24hrs, no failed ignitions.
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  • heatpro02920heatpro02920 Posts: 991Member
    I have installed a bunch of these now

    and had this happen once, it was 4000 hours iwith no failures then it failed 5 times, I went checked and cleaned ignition system, everything looked good, reset it and hasn't happened since... Out of all the customers I installed them for this is the one I would pick NOT to have a problem with since she is a "complainer" but so far so good, if it fails again, I will change the cable and ignitor..
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  • wrxz24wrxz24 Posts: 266Member
    So, it has been about a year. Through this brutal winter, 3rd coldest on record in Vermont, the boiler performed with no hiccups. Yesterday morning, failed ignition. Coincidence? I am starting to believe it is a combustion issue due to it happening on "warmer" days. Any thoughts? Thanks in advance.
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  • tim smithtim smith Posts: 2,122Member ✭✭✭
    Clean condensate trap, clean and check gap on igniter. 95% of the time this is the problem after a year plus, especially a heavy heating year. Once in awhile we get a internal error but not very often. Make sure the combustion #s are good also. That's pretty much the drill most
    times.
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  • ZmanZman Posts: 2,222Member ✭✭✭
    Zman said:

    ignitor

    There was a bad batch of ignitors from tt.

    I would start there.

    Carl

    They are not expensive....
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  • wrxz24wrxz24 Posts: 266Member
    Zman said:

    Zman said:

    ignitor

    There was a bad batch of ignitors from tt.

    I would start there.

    Carl

    They are not expensive....
    I bought one and told myself, the next time it happens, I will switch it out. Well it never happened up until this morning. About the same time as last year....

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  • wrxz24wrxz24 Posts: 266Member
    tim smith said:

    Clean condensate trap, clean and check gap on igniter. 95% of the time this is the problem after a year plus, especially a heavy heating year. Once in awhile we get a internal error but not very often. Make sure the combustion #s are good also. That's pretty much the drill most
    times.

    I think a combustion test is in order as well as cleaning out condensate trap.

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  • unclejohnunclejohn Posts: 606Member ✭✭✭
    I have found two igniters where the part where the cable attaches comes lose inside the porcelain and will turn and get to facing the wrong way. They are fairly easy to remove and inspect and clean. If yours is lose set it back in the proper position and it should stay for a day or so until you can get a new one.
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  • DennisDennis Posts: 36Member ✭✭
    They have discovered that it isn't the igniter it's actually the insulation around the igniter. The insulation is creating a short to the burn chamber. Take a small rasp and make a 45 degree angle around the igniter. But yet still leave some insulation at the base. They are coming out with new insulation kits, but all are on back order due to high demand.
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  • Dennis FoleyDennis Foley Posts: 21Member
    Check the incoming gas pressure and pressure drop when it fires. If it's propane it can be problems with the regulator and temperature changes.
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