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I have a fulton boiler that keeps misfiring due to a low flame signal error. had electrode and flamerod replaced. i am afraid the tech guy did not place the flame rod correctly. my boiler is still mis firing. dont know what it should look like... please help..... small business suffering, west virginia

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Easy fix take a piece of steel wool clean flame sensor lightlly also check your ground very important. but most times
cleaning rod will solve good luck ps turn off power peforming any maintenance

Posted on Aug 21, 2010


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is boiler still under warranty?
normal warranty lasts at least 2 years
if so get ideal to send one of their engineers out
L2 relates to flame failure
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several causes

failure to ignite
ignition electrode/spark generator

failure to detect lit flame
detection electrode/detection lead

blocked condensate pipe
or defective condensate syphonic trap

you really need an engineer to check these components

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Assuming this is on a travel trailer / RV, correct?

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Hi, if the ignition module fires or tries to fire 4 times, this indicates the module is faulty and locks out for safety reasons because of an internal fault.The f-4 code sounds like the pressure switch was open due to condensation not letting it fire up, so the switch was ok, so they changed out the tubing. When you re-set the boiler control module, it locks out due to a internal fault. Change it out and you will be back up and running. The electrodes from the module will cause this as they come from the module. Make sure the condensate trap has no blockage at all as this can cause this problem. I am not guessing, I would replace the boiler module control that you have been re-setting. Keep me posted,

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