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Thread: Weil mclain boiler not lighting

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  1. #1
    DIY Member shluffer's Avatar
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    Default Weil mclain boiler not lighting

    I have a weil mclain gold boiler (hydronic heat). The boiler cycles on with the thermostat but it does not light. I loosened the bleeder valve to confirm that oil was flowing and it is. This is the first time I started it up for the year. It was working at the end of last year. Anything I can check before I call the service guy? I won't be able to get him here until Monday and its cold. Any help would be appreciated.

  2. #2
    Master Plumber nhmaster's Avatar
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    Did you press the re-set button? Only once please.

  3. #3
    DIY Member shluffer's Avatar
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    Yes. Only once. I have convinced myself that it is either the igniter or nozzle. I pulled the nozzle out. I would prefer to replace it, but nothing is open over the weekend so I am going to try and clean it. I tried to blow through it but can't. I'm told that means it is clogged, but I'm not sure.
    Last edited by shluffer; 11-22-2008 at 06:39 PM.

  4. #4
    DIY Member shluffer's Avatar
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    I cleaned it out and put it back together. The boiler still doesn't light. I figure there are only three possibilities left as to what can be wrong with it. Either the tip is still clogged, the solenoid isn't opening the valve to let oil through, or the igniter is done. I figure I should first get myself a new tip, and if that doesn't work, replace the igniter. Any thoughts?

  5. #5
    Master Plumber nhmaster's Avatar
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    It's near impossible to clean a nozzle and have it work.

  6. #6
    DIY Member shluffer's Avatar
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    I'll buy one and replace it. is there a way to test an igniter? I would like to know if I have an issue with it so that I can try and fix it tomorrow.

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