Question about Bosch & Tankless LP Hot Water Heater

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No hot water

My Bosch Highflow model ys2433r is not giving any hot water. the display in the bathrooms is blank except for a flashing #14. I tried turning off the power to the unit and it does the same thing.

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Diaohragm valve or micro switch

Posted on Oct 12, 2009

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Posted on Jan 02, 2017

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We have had major blackouts does my bosch highflow 21e need to be reignited or automatic....how long should it be until I get hot water


you have to reignite it yourself turn dial to pilot and press down the light with either the internal igniter or a long match when lit then you turn dial to the ON position .

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I have a bosch YS2433R 'Highflow' hot water system. It has a YPRM34XB controller. The controller constantly flashes the number '99'. My home has no hot water. How do I fix this error on the controller so...


Solution for a code 10 or 99 (for my own reference as much as anything!)
Hit change and the down arrow on the controller for 3 seconds.
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I inherited a Worcester Highflow 3.5 GC 41-311-39. The motor for the diverter has failed, so I can only get hot water by turning on the tap, then switching on the hot water on the boiler and heling the...


It may well be a honey well which you can just change the motor . The top cover should come off 1 screw holding it and lift off you should see the motor there . Most plumbing and heating shops will stock replacement motors .

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Worcester Bosch Highflow 400 Boiler - no hot water or heating


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Hi, this is Worcester, Bosch Group

Although we don't currently offer live technical support online, our Technical Support department will be able to help. Their number is 0844 892 3366 - they're open 6 days a week and on average answer calls within 20 second. If you want to know more about our Technical Support department visit our website

http://www.worcester-bosch.co.uk/homeowner/customer-service/customer-technical-support

We look forward to helping you

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