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Flashing green light on worcester bosch boiler no heating

Wieless thermostat, no display

Posted by Anonymous on

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 13 Answers

SOURCE: Bosch boiler System

it means that the boiler wants to be serviced, the boiler will still work fine. Once the boiler has been servcied, there are a succession of buttons, that need to be pressed, to tell the boiler that it nhas been serviced. then 365days after it will do it again. Its there to prompt you, to get the boiler serviced

Posted on Mar 03, 2009

  • 659 Answers

SOURCE: lost manual

I couldn't find your model number but here is the website where you will be able to find it if they have it available online. You can also find contact info as well.
http://www.worcester-bosch.co.uk/homeowner/literature/product-guides-and-brochures

Posted on Apr 01, 2009

  • 1 Answer

SOURCE: My boiler is not working, not heat, no hot water,

your condensation pipe may be frozen get a hairdryer on it or a hot kettle that should sort it thats the whit pipe on the left usualy plastic

Posted on Jan 09, 2010

  • 2 Answers

SOURCE: 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

Posted on May 17, 2010

  • 10 Answers

SOURCE: my worcester bosch 24i junior pressure keeps

When water is heated it expands. To deal with this all boilers are fitted with a small expansion vessel which is like a reservoir which holds the excess water.

This expansion vessel is like a balloon in a metal pot. When the water goes in the metal pot the baloon squashes a bit to make room for the extra volume of water. When it cools the balloon pushes the water back into the heating system.

What has happened is your expansion vessel no longer works. When the water heats up there is nowhere for it to go so the pressure jumps up to 4 bar. The Worcester boiler lets high pressure water escape (most boiler allow this to go through the safety valve at say 3.5 bar).

When the water cools the pressure drops very low as the volume of water contracts.

The problem is your expansion vessel - normally a little red painted metal cylinder inside the boiler.

Posted on Dec 22, 2010

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Thanks for that mike, it is a worcester bosch combi 24cdi heating and water can stay on for an hour then everything goes off and the red light flashes. it will come straight back on when reset, but then...


Check the pressure reading, should be about 1 bar when system is cold. Various models in the range of 24cdi. If you do not have a manual, go to,
http://www.centralheating.co.uk/Boiler-Manuals/worcester-bosch-boiler-manuals/worcester-bosch-discontinued-boiler-manuals.
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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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Bosch boiler System


it means that the boiler wants to be serviced, the boiler will still work fine. Once the boiler has been servcied, there are a succession of buttons, that need to be pressed, to tell the boiler that it nhas been serviced. then 365days after it will do it again. Its there to prompt you, to get the boiler serviced

Dec 11, 2008 | Water Heaters

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