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My blueflame gas heater won't stay lit

Pilot goes out heater won't stay lit

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So we are talking about the same won't stay lit I will describe both ways. One is when you lift your fingers off the knob it goes out that instant which is probably the thermocouple needs replaced,look to make sure the tip of the thermocouple is in the flame of the pilot light first. The secound version of it is it goes out in a few minutes up to a few hours.The second version is most common.There is a part called a Thermocouple that is mounted next to the pilot light, it is around 3/16 of a inch diameter 1 to 2 inches long and should be mounted so the tip is in the flame of the pilot light. This is what tells the gas valve the pilot light is burning. If any dust ,cat hair ,dog fur what have you gets around the base of the hole the gas from this pilot light comes out of it will bend the gas, which move the flame so it does not hit the thermocouple like it should, this is below the flame so what ever is in there diverting the flame dose not burn up.A draft from a fan or door could do it also.I have used a procom ventless heater as my only heat for 7 years and have to blow it out twice a year. I bought a new thermocouple at the same time I bought the heater to have in the closet in case it went bad some night, it is still hanging there .Because it sucks air in from the bottom past the flame and out the top everything in the air gets burnt into a fine ash dust. So if you use compressed air to blow out your unit you might want to hold a wet towel up in front of it hoping a lot of that white powder dust will stick to it instead of flying around the room . My flame always looks so much better ,less orange and more blue after this .

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

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SOURCE: Unable To Keep Pilot Light Lit!

I have a Williams top vent gravity wall furnace (model 5009622) and I had the same problem. I had to take the cover off the furnace -- screw on top and two at the bottom (open the access door and there is one screw on each side) to get to the reset button for the vent safety shutoff system. On my furnace it's on the left side toward the top of the unit. I pressed the little red reset button and it's been working ever since. If your furnace is properly installed and doesn't have bird's nest in the chimney, it should work fine. Good luck!

Posted on Dec 06, 2007

  • 13 Answers

SOURCE: Pilot light won't stay lit

Look for dust and lint. Look for them in places where gas should be freely flowing. I had a similar problem with an Empire Corcho wall-mounted propane ceramic catalyst heater. First it was the pilot light, then the #2 ceramic mantle. After horsing around with the gas lines and pressure regulators and trying to re-aim the pilot, it all turned out to be dust and lint in the gas passages. A little dust bunny in the brass pilot tube gave me a pilot light the shape and color of a banana. One puff of compressed air, and I got back my razor-sharp pilot. And some dust in the chimney of the #2 burner kept it burning blue/yellow and blistering paint off the upper surfaces of the heater. A bit of cleaning with a shop-vac put that right. "Passive" heaters are very much prone to this sort of problem because they rely on convection currents (i.e. LOW velocity) to get the job done. Convection currents are notorious dust collectors, as in COBWEB CITY.

Posted on Feb 28, 2009

  • 33 Answers

SOURCE: pilot stays lit, but burners underneathe do not light up or burn.

Check pump is working, if so could be stuck flow switch or gas valve fault get unit serviced

Posted on Jan 17, 2010

  • 1 Answer

SOURCE: warm morning propane heater. new thermal couple.

There are basically three things that can go wrong with the Warm Morning .
Sensor shut off. There is a sensor button on the back of the unit with a wire going from it to the thermocouple. This sensor turns the heater off if the flue is blocked, however it will also shut the heater off if the wire contacts are dirty, or if the sensor has gone bad.
You can test this by bypassing the sensor. Disconnect the two wires from the sensor and reconnect them directly together. If the pilot stays on, your problem is here. Try cleaning the wire contacts first.
Pilot orifice. If the pilot flame is small and doesnt look healthy, the pilot orifice may need cleaning. The hole is very small and can get dirty. Disconnect the silver tube and clean with electrical parts cleaner. Never try to clean the hole with an object like a pin, you may damage it. You may have to slide out the burner unit to get at the silver tube. (Always shut off gas before disconnecting lines and after you reassemble, spray joints with soapywater and look for small bubbles which may indicate a gas leak. Dont use parts cleaner around an open flame.)

Thermocouple can go bad but this is not as common as the first two problems.

Posted on Jan 28, 2010

  • 30 Answers

SOURCE: ventless gas wall heater. Pilot lights but wont stay lit.

The thermocouple may be worn out.
The thermocouple may have come loose from the valve.
The ODS pilot may be clogged with dust or lint and may need to be cleaned with air(less than 30psi)
The valve or regulator may be faulty.

Posted on Mar 04, 2010

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The pilot won't stay lit on gas hot water tank.


Make sure thermocouple tip is seated inside the burner flame.
Make sure thermocouple is not overtightened. Finger-tight + 1/4 turn.
If the pilot lights, then ECO energy cut off is not tripped, but gas control valve might be bad.
Check color of pilot flame: it should be strong and clear blue.
If pilot flame is weak, or color of flame is yellow-orange: Clean pilot orifice and burner and combustion parts on yearly basis.
Clean air intake screen if applicable.
Increase air supply to water heater. Open a window and see what happens.
Check for adequate draft going up chimney using match under vent hood to see if smoke drafts immediately upwards.
Bleed air out of gas line.
Check gas pressure.

Open following links for troubleshoot resources:
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/pdf/Pilot-outage-troubleshooting.pdf
http://waterheatertimer.org/pdf/Vent-spillage-test-atmospheric-gas-water-heater.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

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1 Answer

Pilot light on the gas boiler won't stay lit it's


The pilot flame must touch (burn) the tip oqef the t-couple to hold the magnet in the gas value open.make sure the pilot orifice (hole) is clear.the pilot pressure (in the tube) is factory set full open & can only be adjusted down (less). Also check the gas **** didn't get closed or turned half way.? Assuming its not the t-couple. If all is good & it still won't stay on. Replace the gas value.!

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1 Answer

Pilot light won't stay lit on new water heater


1) Get more air to the water heater and see if problem continues.
2) Read the following pdf-s for things that might apply to your situation.
http://waterheatertimer.org/images/Negative-pressure.jpg
http://waterheatertimer.org/pdf/Attic-Ventilation-and-Pilot-Outage-in-Gas%20Water-Heaters.pdf
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

3) Read pdfs above first, and then Add a comment with missing information below, for possible do-it-yourself help.
Does this water heater have a blower?
Is gas valve electronic? Or does gas valve have a dial?
If gas valve is electronic, have you checked outlet with circuit analyzer?
Did pilot light work correctly for a while? If so how long?
Where is water heater located? Hot attic? Closet? Garage? Is area dirty and dusty? Has air intake been cleaned?
What color is pilot flame? Clear blue or yellow-or-orange?
Have you inspected inside of combustion chamber for dripping water?

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1 Answer

Rheem 22V50F1 pilot won't stay lit. Changed thermo couple & it lit, ran then went out. Let it sit overnight & it lit, ran then went out. What next? p.s. The unit is 5 years old. Thanks


If pilot lights and flame is robust and clear blue, and pilot goes out later, then some suspects can be excluded: air in gas line, low gas pressure, thermocouple is overtightened (finger-tight + 1/4 turn), thermocouple not positioned correctly in the flame, dirty pilot tube.
If flame is yellowish and small: then clean pilot tube and combustion parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
Remaining suspects can include: air in gas line, low gas pressure, bad gas control valve, tight house so household vent fans pull air down water heater vent that blows out pilot, hot attic with inadequate ventilation, water dripping down vent.

Open following links to read troubleshoot resources.
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

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2 Answers

Pilot light will not stay lit.


More than likely the thermal couple is defective. The thermal couple is a safety device that shuts the gas off if the pilot goes out. If it is defective the pilot light will not stay lit. The thermal couple is the device that the small copper line goes to. It is mounted beside the pilot flame and the flame much touch the TC for it to work. If the flame is not touching the TC bend it until it is in the flame. If it is touching the TC then replace it.

Jul 28, 2011 | Whirlpool Water Heaters

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I can light the pilot and the burner will come on, but it won't stay lit. I bought a new pilot assembly and installed it. the burner and the pilot light still won't stay lit. This is the unit that...


Most gas water heater problems can be solved by having service technician perform yearly maintenance. Or by doing maintenance yourself.
This maintenance includes cleaning burner parts and combustion chamber, checking gas pressure and supply, bleeding air out of gas line, checking vent draft, making sure air supply is adequate and not exposed to chemicals, cleaning air intake. Also adjusting flame sensor so it is positioned correctly. If water heater is connected to electric circuit, the outlet must have correct polarity.

You can get gas to appliance indicates the gas control valve and water heater are not locked out. But the gas control valve thermostat can still be bad.

Open following link for illustrations, typical service manuals, and maintenance information, and images of gas control valve thermostats.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

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1 Answer

Pilot lites; but, as soon as I turn on gas flame


sounds like your thermacouplar is going out and needs replaced. Sometimes these will act like they are working fine , but when the pilot stays on for awhile and later goes out it is a sure sign that it is bad

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1 Answer

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You will need to check the pressure regulator for the gas.
It sounds like the gas pressure is to low to keep the pilot lit.

John

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