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Gwh 260 pn-l can't keep pilot light lit. - Bosch GWH 260 PN LP AquaStar Indoor Tankless Water Heater - Liquid

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I light pI lot and it stays lit burners light and reach temp but then burners wont relight to keep temp unless I tap gas valve..is it my gas valve


A lot of pilot lights have a thermal coupler... the pilot light must be lit for several min to open the coupler so the pilot light will not go out.... the newer systems use an electronic ignition and no pilot light and need power to autostart but the coupler may be gone if you are holding that pilot start button down for several min and the pilot light is still going out..ps.. leave it in pilot mode for several min after initial start up before turning turning full burner operation operation operation operation operation operation operation it will snuff out the pilot light.

May 18, 2016 | Water Heaters

1 Answer

Remeha boilers - pilot light keeps going out


You Need to replace the Thermocouple. You can get them at most hardware stores take the old on with you

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Nov 22, 2012 | Water Heaters

1 Answer

Pilot light keeps going out


pilot light keeps going out! more then likely its the thermal coupling doing this. if bad it shut all gas to heater for a safety measure. just shut power off, then turn gas off and replace it. then you should be ready to go. to relight heater hold down on gas vavle knob in the pilot position, hold down and light it at the coupling where gas comes out. when it is lit, continue to hold down for 60 seconds. release knob very slow. then if its lit, turn to the run position. if flme goes out, wait at least 5 minutes to expel the gas fumes and turn to pilot and try again. good-day !

Mar 31, 2012 | Water Heaters

1 Answer

My Bosch GWH 425 EF will not ignite. Have had this water heater 3 years - it is happening more & more, plumber that installed it says it supposed to do this....pretty sure it's not.


im leaning towards the thermo coupler its like a eye only it measures the heat at the pilot tight if it tells the unit its off it shuts down and turnes the gas off thats why you have to keep relighting hope this helps.

Apr 26, 2011 | Bosch GWH 425 EF L Water Heater

1 Answer

I have a Kenmore Power Miser 12 gas water heater that the pilot light keeps going out. The water heater has been in service for 45 months. The pilot light has a blue flame with some orange flame flares...


check and or replace the thermal coupling. the coupling goes into the main gas control, if the coupling is bad it will shut off gas supply. as a safety measure.

Mar 09, 2011 | Water Heaters

1 Answer

Adjust pilot light on hot water heater


On most water heaters there is no adjustment to pilot light. About the best you can do is clean pilot and burner. If you are having trouble keeping pilot light lit then I would replace the termocouple.

Nov 16, 2010 | Water Heaters

2 Answers

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.

Dec 17, 2009 | General Electric GE SmartWater Household...

1 Answer

My 1.5 yr old gas water heater has a pilot light problem


YOUR WATER HEATER HAS WHAT IS CALLED A STANDING PILOT-STAYS LIT ALWAYS WHEN THE PILOT GOES OUT YOU LOOSE EVERYTHING. YOU HAVE TO REPLACE THE THERMOCOUPLE WHICH KEEP THE PILOT LIT. ONCE THE PILOT IS LIT THE THERMOCOUPLE SENDS IN MILLIVOLTS TO THE BURNER TO SAY ITS READY FOR BURNING
IF YOU ARE NOT FAMILURE WITH THIS REPLACEMENT PLEASE FIND SOME ONE WHO CAN. IT IS NOT HARD TO DO ASK A NABOR OR FRIENDS SOME HAS TO KNOW HOW. SERVICE COMPANYS ARE OUT FOR THE MONEY FOR A 10 MINUTE JOB

Aug 10, 2009 | Water Heaters

1 Answer

Bosch tankless GWH 1600 H NG won't always ignite. The igniter sparks, but doesn't always light the gas. It just clicks. When installed it lit every time, now it takes more and more tries to get it to...


The manual says to hold a match near the pilot while the ignitor is trying. It says that if the unit lights the pilot orifice may be dirty or clogged. Then the manual says to check the voltage on the igniter. It should be 1.3 volts DC minimum if it is not means the electronic control box is defective.

Let me know the status ...Kevin

Mar 29, 2009 | Bosch 1600H-NG Natural Gas AquaStar...

1 Answer

Burner will not light


Try this web site!
http://www.protankless.com/BoschProHome/GasProducts/BoschGWH425HN/tabid/506/Default.aspx
Copy & Paste to Google search engine.

Jan 27, 2009 | Bosch ProTankless GWH 715 ES LP Tankless...

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