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I have the bosch bosch pcr715m90e the wok burner does not light

The inner ring does not light so flame goes out

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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gary1121
  • 332 Answers

SOURCE: bosch hot water service 16p burner shuts down

a tankleess water heater doen's have a piliot? but check the vent outside make sure nothing is blocking it, if it detects the exhaust thru the cold air intake it will shut off and over heat, other then that it would have to be the control board

Posted on Jun 06, 2009

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  • 1 Answer

SOURCE: Bosch AQ125BNG Burner goes out even though the

Often, this is the result of a restriction of exhaust gases. This type of hot water heater must be adequately vented, (per installation specs). I found this out after taking a number of cold showers. :^( Two years later, and still counting, no more problems. :^)

Posted on Dec 06, 2009

SOURCE: aq 125 blp Bosch tankless water heater, pilot

Natural Gas: Pilot burner or orfice may need to be cleaned. Pg 11 manual.
http://www.boschhotwater.com/Portals/7/TechManuals/125BL_English.pdf
Most tank and tankless gas water heaters today suggest annual cleaning and maintenance of burner.

Open following links for Bosch troubleshooting resources:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
http://www.boschhotwater.com/HelpfulResources/TechnicalSupport/BoschAquaStarModels/125BLTechSupport/Troubleshoot/tabid/474/Default.aspx

Posted on Jun 14, 2011

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1 Answer

We've got a Bosch Gas Heater which works fine 1


Without the model number it is a bit hard to diagnose the problem. Only thing that comes to mind is blocked burners. You may need to get a technician to service the burner.

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Bosch gas heater is firing up and hot water is coming through but then cuts out after 1min water pressure drops and the burner cuts out


Ignoring the pressure drop which often is normal when the burner goes out, note that the pressure may also go up when burner is lit.
After 1 min. - suggest the flame detector needs cleaning. It's situate in the combustion chamber, usually at the rear, and looks like a right angled 1 inch pin above the gas jets. Clean with 240 grit emery cloth and also clean the nearby gas jets with a tooth brush

Apr 24, 2014 | Bosch Water Heaters

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Just installed a 425 hn, the igniter clicks and the pilotflame goes on and off at the same rate as the igniter clicking. The main burners will not kick on. Checked all the electrical connections, checked...


I am not aquainted with the Bosch..... But it is a heater. I am going from past experience with gas furnaces and how the process works..... You said that you can get the pilot to stay on if you unhook the Main Gas Valve wire. Do you have 24 Volt power on that wire to Common? Does this have a Flame Sensor? Maybe it got damaged. Does it have a good ground from the burner to the ignition control module? Does that wire to the electro valve go into a plug that plugs into the ignition control.... Maybe that pin is not making contact to the board. Hope this helps If no one else answer right away repost Or call and see if you can get Tech support from Bosch..... I know how frustrating it is you buy something brand new and it doesn't work

Feb 01, 2011 | Bosch 425HN NG Tankless Water Heater

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Sometimes it doesn't light at all other times during use the hot water goes off and the box keeps flashing green as it continues to spark


it sounds like the flame sensor is dirty or faulty. when the pilot lights the flame sensor rod recognises the flame to allow the main gas valve to open and ignite the burners. you can clean the flame sensor with some steel wool or sandcloth

Dec 29, 2010 | Bosch & Tankless LP Hot Water Heater

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I have a Bosch AquaStar AQ-125-BNG tankless water heater. It has worked very well until recently. The problem: The hot water at the tap is turned off, the flame on the main burner keeps burning and...


there is a small dia copper pipe which has a thermal coupling on it the end of it sits in the flame of the pilot light,
if it fails which it does after about 25-15 months,it shuts down the gas burner

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My bosh water wizard 10P pilot light keeps going out.


Very possible the thermocoupler is no good. The thermo coupler is that bulb that is in the pilot flame. It controls the main valve It's not expensive and fairly easy to change out.. Make sure you get no dirt in the cspillary tube hole.brass screw end. The bulb must be just in the flame tip when adjusting. Good Luck, Ned-

Sep 17, 2009 | Bosch & Tankless LP Hot Water Heater

1 Answer

No hot water, pilot light lights but no burner ignition


Thermo coupler may be defective. it controls the main gas valve by closing main if pilot is out. make sure thermo coupler bulb is positioned over and near tip of pilot flame, but not in the flame. Thermo couplers are inexpensive and easy to change out.

May 05, 2009 | Bosch & Tankless LP Hot Water Heater

1 Answer

Pilot lights (not always) but gas will not flow into burner


First Clean the ignitor assembly and make sure the flame is reaching the flame sensor strongly.

You may need to replace the flame sensor.

Sep 19, 2008 | Bosch 1600H-LP Liquid Propane AquaStar...

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