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I have a Bosch 16B hot water service that won't light. I have replaced the batteries and checked there is gas working in the rest of the house. Is there any thing else I can do to make this work

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6ya6ya
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Posted on Jan 02, 2017

dcramer531
  • 1654 Answers

SOURCE: Hi There, We are in a

You may have a dirty pilot orifice. Try this. Turn off the pilot by turning the control knob to off. Remove the front panel to get access to the pilot orifice. Use a can of compressed air with attached straw (the same stuff you use to clean computer keyboards) and blow out the pilot orifice, which is inside the pilot assembly where the pilot flame burns. Blow it out from the top and from the sides through the air holes. Then relight the pilot and see if that improves the flame size and color (blue) to heat the thermocouple.
Here is a link to the manual and instructions. www.tanklesswaterheatersdirect.com/shop/tanklesswaterheaters/manuals/125B_manual.pdf

Posted on Mar 23, 2011

heatman101
  • 43501 Answers

SOURCE: Hot water heater pilot Light

Hi,
Yes you do have a problem with the button, the heater is broken.
Turn the gas off to the unit and call to get it fixed as soon as you can.

heatman101

Posted on Apr 18, 2011

  • 1 Answer

SOURCE: Bosch TF 250 hot water

FixYa - Bosch tf250 is not an air conditioner, it is a instantaneous gas hot water service...

Posted on Nov 26, 2011

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I have a bosch aquasar 125b tankless water heater and the burners do not light when hot water is turned on this also causes the pilot light to go out


possible faulty pressure switch connected to the water line and that is failing to turn on the main gas tap solenoid
best have it checked by an accredited gas fitter or service center for the make

Aug 20, 2016 | Bosch AquaStar Indoor Natural Gas Tankless...

1 Answer

Bosch Confort S 13 BP tankless water heater won't ignite, It clicks but no gas going thru valve


The S 13 BP is a simple unit that does not have a pilot light. It uses electronic ignition on demand, which is what you hear clicking. If there is no gas going through and you've verified there is gas to the inlet, then it has to be the gas control valve.

Feb 01, 2013 | Bosch & Tankless LP Hot Water Heater

1 Answer

Water not as hot as it was.


Tankless require yearly service to keep burner and combustion parts clean and check electrical connections, gas solenoid, gas pressure, venting, etc.
Read product manual for advisories and recommended maintenance.
Yes, aren't you glad you saved the manual.
Always check that local area has affordable and qualified service technician for your brand before buying tankless.
Before calling service technician, copy following link for general troubleshoot resources, including some manuals, and links to Bosch.
http://waterheatertimer.org/pdf/No-Error-Code.pdf
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Try turning temperature down.
The fact there is no error code, and the gas is not firing correctly, means you have a small unit with no error codes and PC board has failed ... or it means you have a unit with error codes and possibly bad PC board.
If problem is the PC board, then Bosch will send you new board, and expect same level of repair success as though your computer's motherboard was replaced.

You can buy ordinary box-store tank-type heater and install yourself same day for about $325.
Then maintain and fix it yourself. I recommend AO Smith/American/State/Reliance/Kenmore/Whirlpool since these are easy to maintain with clear directions in manual, plus AO Smith posts service manuals for the whole line of products, and any local plumber can fix them with ez-to-locate generic parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Sep 07, 2012 | Bosch & Tankless Water Heater

1 Answer

Will not fire at all, trys to light but get the e1 code . used to work intermitently or fire right of way but then go cold and back to hot for about five min. then stay hot now wont even light


Before calling service technician, open following links for troubleshoot resources:
http://waterheatertimer.org/pdf/Bosch_E1_troubleshooting.pdf
http://www.bosch-climate.us/bosch-hot-water/aquastar-service-bulletins/
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
http://waterheatertimer.org/Crossover.html

Before installing tankless water heater, read the service manuals and product manual to make sure you have testing skills and equipment needed to repair tankless gas water heater, and that you are prepared to buy expensive parts when needed and do the recommended yearly and monthly maintenance as outlined in manual.
Also check that area has qualified service technician, and that person carries parts on-hand, and is certified for your model number. Keep Tankless manufacturer contact information on-hand, and be skeptical of promises of unlimited hot water, and effortless long-lasting water heating, and saving money. The only folks saying this are the folks selling the product, and not their customers.

Fix most tankless gas water heaters yourself, same day, all brads for about $350.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Sep 21, 2011 | Bosch Water Heaters AquaStar 250SXO...

1 Answer

I have a Bosch 10P water heater. Pilot light has blown out and while trying to relight the pilot the stop button has been pushed down and won't pop back out. What am i doing wrong? Cheers


What leads you to suspect that pilot blew out instead of another problem?
Fact that pilot will not relight, indicates other factors at play.

Open following link for Bosch troubleshooting resources including manual, and Bosch contact info:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Best place to start is your manual.
http://waterheatertimer.org/pdf/Bosch_10P-installation.pdf

1) Manual recommends 'cleaning by authorized person, never less than once a year.'
Tankless water heaters, and most newer tank-type gas water heaters, are highly technical and finicky devices that require continual maintenance, with tankless requiring 'yearly' maintenance while tank-type require 'periodic' maintenance.
2) Troubleshoot in manual says 'no gas supply' or 'blocked pilot' replace pilot injector

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 21, 2011 | Bosch & Tankless LP Hot Water Heater

1 Answer

I have a Bosch Water Wizard 10P - have no hot water, no water comes out the hot water tap, can't light Pilot Light, not sure where to start would love a step by step diagram how to start pilot light -...


Open following link for Bosch tankless troubleshooting resources, including Bosch contact information, typical manuals, error codes, tech support, parts, fuel-saver calculator, service bulletins, water heater forum, fixya links, disclaimers, and links for finding service technician.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Before calling service technician, read manual for fault finding and possible solutions.
Read manual cover to cover, make sure tankless receives yearly maintenance as outline in manual.
http://waterheatertimer.org/pdf/Bosch_water-wizard.pdf
http://waterheatertimer.org/pdf/Bosch_13P_16P_In.pdf

Following links talk about keeping pilot lit, and describe location somewhat. Bosch water wizard has standing pilot light.
http://www.fixya.com/support/t2961646-water_wizard_10p_pilot_light_keeps_going
http://www.fixya.com/support/t2960079-bosh_water_wizard_10p_pilot_light_keeps
http://www.fixya.com/support/t6182021-bosch_10p_tankless_hot_water

1) The manual does not show diagrams you asked for.

2) Website that sells Bosch parts does not show parts for water wizard, nor does Bosch site for parts: Instruction manual says: replace pilot injector
http://www.boschhotwater.com/HelpfulResources/PurchaseParts/tabid/837/Default.aspx
http://www.houseneeds.com/shop/heatingproducts/waterheating/parts/bosch2400espartsbuy.asp#

3) Searching "pilot injector for Bosch Water wizard" turns up fixya questions which is generally bad news for do-it-yourselfer because it means information sources are through service technician.

4) As a general rule, tankless are not do-it-yourself repairs or installation because they are affected by so many internal and external factors, including air quality, air flow, venting, other gas appliances, gas pressure, gas supply, water pressure, water flow, plumbing problems, water quality, plus internal parts and including any combination of things listed above..
Replacement parts each come will disclaimer.

Add a comment with your experience so others with same-similar problem can benefit.
Send some photos so the internet can see the problem.
http://www.fixya.com/support/r6568559-post_photograph_fixya_questions_answers

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Apr 03, 2011 | Bosch & Tankless LP Hot Water Heater

1 Answer

Cannot get the pilot light to start on a bosch instaneous hot water service


Check that you have power to the unit or that the battery inside the unit isn't dead.
Also check that you have gas at the unit
Hope this helps, if not I'll need more info like Model, age of unit & location e.g. inside - outside etc.

Mar 06, 2011 | Bosch & Tankless LP Hot Water Heater

1 Answer

Bosch instantaneous gas hot water not working. sounds to be sparking but not lighting and heating water. The gas is turned on. Just moved into this house so new to the machine with no manual. Comes up with...


Open following link for Bosch tankless troubleshooting resources, including Bosch contact information, typical manuals, error codes, tech support, parts, fuel-saver calculator, service bulletins, water heater forum, fixya links, disclaimers, and links for finding service technician.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Read manual cover to cover, make sure tankless receives yearly maintenance as outline in manual.

Add a comment with your experience so others with same-similar problem can benefit.

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 14, 2011 | Bosch & Tankless LP Hot Water Heater

1 Answer

Bosch water wizard 16 - gas still runs after water tap turned off


Sounds like a flow sensor may be bad. It may be registering flow when there is none and it sending signal to ignitor and gas solenoid that there is.

Apr 04, 2017 | Bosch Water Heaters

2 Answers

BOSCH TWH-G1-25 not lighting


Model????? The 635Es, 250SX and 2400E are same. The 2400ES and 2700ES are World 2 heaters. Any error codes as I can't imagine this problem w/o codes. Flow initiated but you have spark. Is there any ignition? If so flame rod may be bad and not reporting ignition. Igniter sets on some early 2400/2700 have proved to be bad. Water pressure has zero to do with this. If you have an EC or EA code you have gas problems (meter, line size/length or gas valve). Also if 3005 or 3007 Software you can pull the last 5-10 error codes from Controller.
You need to call Bosch and get an RSA out there. This is a gas appliance that if you screw up can destroy your house. FYI any water in the gas valve condemns it. It will not dry out and work correctly. Is the fan running at ignition and/or purge? Any Controller errors require replacement. You have 2 years on parts warranty from installation date so don't screw around trying to DIY. Warranty Labor is not covered.
Flue obstruction? If you used the AQ3 installation Kit you have the wrong termination box to prevent freeze up and/or water penetration You need the Z-Vent drop nosed termination. Look for a fine tan dust in the fan intake (brown plastic) the intake throat or in passageway to the gas valve. Call Bosch unless you're a Gas Tech this is beyond you.

Mar 02, 2009 | Bosch AquaStar 2400ES-NG

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