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burner problems???

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db32
db32 Member Posts: 4
in THE MAIN WALL
Forgive me I'm not a heating tech (master plumber) but know a little. Boiler is peerless direct-vent glowplug igntion 165K btu , 4 zone with 1 being storage tank no priority.

Seems that approx 1x month, becoming more frequent now, boiler fires for storage tank and it sounds that all safeties are being prepped(blower, etc), the glowplug ignites but burners dont fire. After turning off/on boiler @ switch it resets and fires normally.

Theres probably an easy check with my mult-meter but my troubleshooting knowledge ends here. Fault in venting? Gas valve?
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