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I have a Junkers butane gas water heater but the gas burners will not stay lit

This gas water heater (a few years old) uses bottled gas and is ignited by two batteries. These ignite the pilot light easily but the gas burners do light up but not very efficiently. I have tried to clean the burners with a tooth brush but it is extremely difficult to gain access to do this. Can anyone advise ? For example, can the copper 'casing' which contains the water for heating be removed in some way. Or, is there another solution which can be tackled by an amateur like me ?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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pgh_pa_guy
  • 2992 Answers

SOURCE: pilot light won't stay lit after release of gas valve.tried few t

Most likely it's time to replace the thermocouple, the safety device that makes sure the pilot is lit. New thermocouples are cheap and you can find them at most hardware stores and the big-box places (Home Depot, etc.)

Here is a site with basic information to get you going.

Posted on Apr 08, 2009

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snap101
  • 117 Answers

SOURCE: i have a richmond gas hot water heater model

try sanding the tip of it with sand paper sometimes that helps

Posted on Aug 11, 2009

john224
  • 1378 Answers

SOURCE: Natural gas hot water heater not stying lit

Probably a bad solenoid in the gas valve. Higher voltage of a new thermocouple keeps it open longer but it still fails over a period of time. Look into a new gas valve for the water heater.

Posted on Dec 17, 2009

  • 1 Answer

SOURCE: GE gas water heater lights for only a few seconds.

Called GE and there is a glass vile under the burner that is defective and cuts off the oxygen.
They are mailing out a replacement to my house & have contracted a plumber to install. waiting 4 days now. They say that the glass vile incinerates and there is not any thing left to it. The burner area is full of black soot. will post again one fixed.

Posted on Jan 21, 2010

Testimonial: "This is an accurate description of my own follow up. That device, a TRD, was the indeed the problem. "

kel1guy2002
  • 3740 Answers

SOURCE: pilot light on water heater wont stay lit

The thermocouple has failed. It is the temp probe that goes from the pilot lite burner area to the control valve. Go to your local plumbng repair shop and buy one. Most appliance parts stores have them also. Take the old one with you and they will hook you up with an exact replacement. They are not that hard to change. Usually a nut or 2 screws in the temp bulb area at the burner end and a nut that threads into the control valve.
Make sure before you install the new one that the area where it mates to the gas valve is clean. Should be about a 20 min job including clean up with replacement parts in hand.

Posted on Jan 23, 2010

Testimonial: "exactly what I wanted yo know. thank you"

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1 Answer

Junkers manual gas hot water


What are you expecting to happen?

I assume the water heater and water inside it is cold (otherwise you would not be lighting it). You light the pilot. The main burner comes on and the pilot lights it. The main burner should stay on until the tank is hot, When the tank gets hot the main burner should shut off but the pilot stay on. If you draw hot water, cold water will run in and cool the tank. If yu do nothing the tank will eventually just cools off. then the main burner should come back on to reheat the tank.

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http://documents.junkers.com/download/pdf/file/7181465057.pdf Sometimes there are several parts on this model to find buit beware on some marketing technical made differences inbetween one year of build there can be some modifications inside.

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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 wont stay lit on waterheater. I replaced Thermocouple and that did not fix it. It will stay lit on vacation setting.


Most gas water heater problems can be fixed with yearly service that cleans burner and burner parts, checks gas pressure and bleeds air out of gas line, cleans air intake, and checks for venting and air intake problems.
Open following links for resources:
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/pdf/Attic-Ventilation-and-Pilot-Outage-in-Gas%20Water-Heaters.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

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Richmond-Ruud-Rheem
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

It sounds like you've read the manual.
And cleaned the burner parts according to manual.
You replaced thermal reset, but system is still tripping, so either the gas valve and tubing are bad, the thermocouple is bad, or there is a problem with gas pressure, or gas line.

Post question on pro water heater forum:
http://www.thetankatwaterheaterrescue.com/forums/forum3/

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Hi,

The flame sensor is bad....and it is not sensing that the flame has lit....

Some models have a separate flame sensor and some use the ignitor to sense the flame...

If it has a separate sensor then clean it with a soft cloth... if it is the ignitor then the ignitor is bad...

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