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Need to know how to switch off hot water by combi boiler worcester bosch 240 to be able to fix leak on pipe downstairs

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Its the vavle 3 one in from the left its a 15mm pipe and there will be a iso vavle what you can turn with a flat point screwdriver and that will turn off the main water to the boiler these are the manual
http://www.worcester-bosch.co.uk/homeowner/literature/discontinued-boiler-literature/discontinued-gas-boiler-literature/240-bf-discontinued-december-1997-literature

Posted on Jan 23, 2011

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My central heating turns off when i turn the hot water tap on. when i turn it off the central heating doesn't come back back on until i turn the power off and on.


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My central heating works but I have no hot water - 24'7 ...

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Diverter valves switch heat between the hot water and the central heating. When youturn your hot tap on, the diverter valve temporarily shuts off the water supply ...

Does your boiler keep switching itself off? Here's why ...

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Jul 7, 2015 - ... Bathroom Suites, - Showers, - Wet Rooms, - Taps and Accessories, Information and ... Low water pressure can cause your boiler to turn itself off. ... boiler is not turning off, you aren't getting the amount of hot water you require. ... If there is air in your central heating system, then your boiler may shut down.

Feb 09, 2016 | Water Water Heaters

1 Answer

I've got a Worcester Bosch boiler had a leak In the pipe On the landing so a friend emptied the boiler an I fixed the pipe but I don't know how to refill the boiler


Can you get the manual online? You have the Manufacturer info so you probably have the model number too. I found a manual on Manuals.com for my boiler so they may have yours too which will hopefully have some information on filling boiler although I realize each installation is somewhat different but that's why it's difficult to answer you question. Usually there is a manual pressure valve that regulates the water pressure in the boiler which is usually pretty low...like less than 20 lbs. The manual should tell you the pressure as well. But this pressure valve has a flip handle that comes off the cold water line to the boiler to do just what you want to do...refill it with water. When refilling the boiler (if you find the valve, you may have to purge the air out of the lines which there is a whole other process for. But you shouldn't allow cold water into a hot boiler...it could crack it when the cold water hits the hot cast iron. So make sure the boiler is cool when filling it up.
Now go try to find that manual!

Nov 22, 2015 | Bosch Water Heaters

1 Answer

Hi I have a 24i worcester boiler I have drained the heating to do some work but I need the hot water to still work.I spoke to Bosch and they said I need to put a loop in.I am not a plumber but can get


Hi Steve, I am not a plumber but have done a lot of DIY on my own heating system with Worcester Bosch combi boiler! I believe that you can have the hot water on without the heating system filled, just turn all the settings as for summer use and the thermostat right down so the heating is forced to stay off!

Nov 07, 2014 | Water Heaters

1 Answer

Operating worcester bosch 240 gas boiler


  1. If there is no water on the floor, your crack is probably OK so far. The water thing is a worry though. NEVER fire a boiler that is low on water. Adding water to a hot boiler will crack it. Tell me all you can on what components you have in the water and gas lines.

Nov 15, 2013 | Weil-McLain Heating & Cooling

1 Answer

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.
Get the manual for your unit, to wards the end of install manual it has a fault finder, Also has a basic 1 in the user manual. Number of flashes how fast the light flashes which one flashing can all mean different, So get the manual and check, Some parts are easy to fix, as long as you do not touch the gas side the rest is plumbing. Come back if needed.

Mar 05, 2013 | Water Heaters

2 Answers

Lighting the pilot light on a Worcester 24CDi combi boiler.


Most of these boilers don"t have a permenant pilot light they have electronic ignition that lights the burner when you are calling for heat or hot water, is there enough water pressure in the boiler ( there is a small gauge on the bottom r/h side of the boiler the needle should be sitting at between 1 - 2 if not enough pressure the boiler won"t light )

Apr 23, 2010 | Heating & Cooling

1 Answer

Combi worcester 240. Plenty of hot water when heating running bot only luke warm when heating off. The pin in diverter valve working fine and ive tested the switch and that is ok !! Anybody got any ideas....


what u need to do is let the flow and return pipes for the heating go cold they are normally the 22mm ones and if 1 gets warm when u run your hot tap then u need a new diverter valve. if they stay cold then u need to see if the boiler is igniting in hot water so turn off the heating and just run the hot tap to see if it ignites get back to me

Jan 31, 2009 | Combi Centre DX - Mango

1 Answer

Repressurizing my boiler


take your pick from video or text

How to Repressurise a Heating System with an Internal Filling Key ...

? 3:30
https://www.youtube.com/watch?v=zUsBw1ZpiKY
Oct 27, 2010 - Uploaded by Worcester, Bosch Group
This video shows you how to repressurise your heating system using your Greenstar gas boiler's internal ...

Repressurise Worcester boiler - YouTube

? 4:12
https://www.youtube.com/watch?v=K6fH4XfGgxo Nov 10, 2012 - Uploaded by Rory Macfarlane
This video demonstrates how to repressurise a Worcester combi boiler on the.

Product Troubleshooting Videos ' Worcester, Bosch Group

https://www.worcester-bosch.co.uk > Support > Troubleshooting > Videos How to repressurise a heating system with an internal filling key ... how to repressurise your heating system using your Greenstar gas boiler's internal filling key.

How to top your Worcester combi boiler up - Gas Care.

www.gascare-heating.co.uk/topping-pressure-worcester-bosch-combination-boiler/ Aug 4, 2014 - If the needle on the pressure gauge on your boiler has gone into the red or down to zero it means there is little or no pressure left in the heating system and it needs to be topped up ASAP. So here's Gas Care Swansea's guide to refilling your Worcester Bosch combination boiler through the internal filling link.

How do I re-pressurise my Worcester Bosch boiler? - My Plumber

www.my-plumber.co.uk/blog/how-do-i-re-pressurise-my-worcester-bosch-boiler/ Sep 1, 2015 - 6) Check the pressure on the pressure gauge. When it reaches between 1 and 1.5 bar, it is time to turn the white knob back to the right to close the valve. Be very careful not to over-tighten. 7) Turn the filling key to the left until the arrow lines up with the open padlock and remove the key.
Repressurise Worcester boiler

May 12, 2017 | Heating & Cooling

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