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Question DetailsAsked on 1/5/2017

Mwater heater pilot lights and stay on but when the burner come on and runs when burner goes off so do the pilotp

piolt lights burner lights burnet goes off piolt do to

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2 Answers

0
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You can find a lot of previous responses to this sort of situation in the Home > Water Heaters and Home > HVAC links under Browse Projects, at lower left.

Generally speaking, if a gravity vented (flue up through the roof without a fan inline in the flue or blower fan in the firebox area) unit, this would commonly be due to excessive drafting (either from firebox cover being off or not properly installed, or due to lack of a proper cap above the roof to minimize wind effect). But if that is the case, you would see the pilot flame "walking" off the gas orifice or wobbling around significantly at that time.

It is also possible, on any type fuel-fired water heater, that the thermocouple or thermopile is not properly installed - so it is OK with just the pilot lit or with the burner going and radiating heat to it, but when the burner shuts down the pilot flame wobbles enough with the change of draft by it that it fails to keep the tip of the thermocouple hot enough, so it shuts off the pilot light gas. This sort of thing can also happen with a dying thermocouple/thermopile or one not projecting into the pilot flame far enough or with the flame diverter (the curved finger behind it in the mounting (see owner's manual) - it just fails to turn out enough electrical charge to keep the gas control valve relaibly open under all conditions - can also happen at burner startup when the burner first "whooses" into flame, in some cases.

If the water heater is kicking off fairly quickly and not firing a full cycle - kicking off before the water is up to temp - then most likely a protective safety sensor kicking it off - commonly a firebox overtemp or flame rollout or pressure sensor kicking off, or for a high-efficiency unit the eduction blower (the one that pulls the exhaust from the water heater and ejects it outside) or its damper may not be operating right.

Answered 1 year ago by LCD

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Hi,

This is Erick in Member Care. Thanks for your interest in Angie's List!

We'll be happy to help find top rated provider to fix your water heater, but it doesn't look like you've joined yet. You can join by visiting www.angieslist.com or by giving us a call. Our call center is available 8:00 am-9:00 pm weekdays and 8:00-5:00 pm ET on Saturdays.

Thanks for your question and we look forward to assisting you!

Answered 1 year ago by Member Services




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