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Bosck Water Wizard not getting hot

We have a Bosch Water Wizard that lights up when a tap is turned on but will not get hot enough. Any ideas to rectify this problem.

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Bosch 780 main burner is not starting when tap is turned on. Pilot is working

Posted on Mar 14, 2012

It sound like you control box. I had the same problem. I had to buy a new one. Price aroud $250.

Posted on Sep 28, 2008

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Posted on Jan 02, 2017

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Bosch hydropower 13h gas water heater not working


the tank is possibly full of gunk and the thermostat is not sensing the request for hot .flush tank if you can thru the bottom drain a few times if it is bad enough that ou get no water out then only option is to replace with a new unit

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Does my Bosch SHU43C06UC/17 dishwasher have a hot water element in it? Our kitchen tap water does not get very hot, and before I hook up the dishwasher I want to make sure it will have water hot enough to...


Hi.
Your dishwasher should never be connected to a hot water tap.
Every dishwasher has its own Heating element. If you connect it to a hot water tap you may eventually damage the inlet valve which has sensitive plastic components in it and may even void your warranty if your installation manual suggests Cold water connection only.
Regards Sam

Oct 06, 2013 | Bosch 24 in. SHU30 Built-in Dishwasher

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Hi I have a Bosch water wizard 10p & although i have the heat turned up to the highest it is still not hot enough! I was wondering if there was another way of increasing the water temp?


Open following link for Bosch troubleshooting resources:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Typical Bosch 10P manual shows temperature control illustration on Pg4, and includes low water temperatures on troubleshoot on Pg6
http://waterheatertimer.org/pdf/Bosch_10P-installation.pdf
Water flow rate too high, low gas pressure, faulty thermostat.

Two other things might be causing problem
Crossover:
http://waterheatertimer.org/Crossover.html
Lime build-up
http://waterheatertimer.org/pdf/Rheem-De-lime-tankless.pdf

Jun 15, 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.

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I have a Bosch Water Wizard 960 400 NG. How do I adjust the water temperature??


In New Zealand, the Bosch 960 Water Wizard has a maximum temperature of 55 degrees celsius, for safety reasons, check with your local gas fitter or plumber to see if your system has been set correctly. If water feels hot through some taps in the house, but not others, then there is a good chance your water pipes are not insulated, meaning that the heat from the water is escaping out through the pipes before it gets to the shower, for example. As far as I am aware, there is no way to manually adjust the water temperature of a Bosch 960 Water Wizard, it has to be done by a certified professional gas fitter. Recommendation: Get a more up-to-date gas water heater, that doesn't require a manual restart each time the pilot light goes out.

Feb 26, 2011 | Water Heaters

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Hi i have installed a few bosch gas geysers at our lodge in mozambique.The problem is that the water gets hot when we turn the water on then the heat just shuts off and the water gets cold after a short...


The problem with all that type of water heater is that once the hot tap is turned on sufficient flow must be maintained through the water heater to keep the main gas burner alight. If the heat adjuster is turned up to high, then the person using the hot water will turn it down to a low rate which means the main burner will turn off and result in cold water. Try setting the heat control to the lowest setting that still gives hot enough water. If you have a thermometer adjust control for a temperature of around 50 to 55 degrees Celcius. You may have to fiddle with fine adjustments to get the temperature and flow rates to maintain a constant output of hot water. You may still have intermittent problems. If the heater only supplies baths or showers you could set the temperatuer even lower (45 to 50) to ensure that the hot tap is used more than the cold which will maintain flow and therefore heat.

Nov 22, 2010 | Bosch AquaStar Indoor Natural Gas Tankless...

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Water temp. at the tap fluctuates


It is likely the inlet filter is plugged. this reduces the flow and then the heater adjusts the burn rate down to protect itself. the filter screens are small and plug easily. It would be a good idea to install a larger pre filter on these heaters.

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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.

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