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Worcester bosch 24cdi,works o.k on central heating,will not work on hot domestic water on either being used with central heating,or seperatly,we are without domestic hot water,can you please help.

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There is a filter on the diverter valve may be blocked or the diaphram may have stretched ruptured

Posted on Nov 04, 2008

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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


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

Jan 23, 2011 | Heating & Cooling

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We have a Worcester Bosch Highflow 400 (10 year old) combi boiler. Over the last few weeks when we have put on the heating the boiler kicks in and fires up and the heating comes on (the water comes on fine...


The by pass pipe may be limed up. This apparently causes a reduced flow which will stop the heating side of the thing working. Call out Worcester Bosch engineer. It costs £210 including VAT and most parts and they almost guarantee to get it working.

Nov 06, 2009 | Ruud Matching Split Air Conditioner

1 Answer

Worcester bosch highflow 400 - the green demand light never works when i select it, there's no hot water or heating. The green demand light does not comes on but there is noise from the boiler . .


Sounds like a control panel.Detatch the block connector that serves the gas valve,see if you have power on the bare pins.both left and right pins should measure mains voltage.If you have no power at the pins its the pcb control board.Replace the board.

Nov 01, 2008 | Heating & Cooling

1 Answer

Vaillant Ecotec combi boiler - radiators working but no hot water flow to taps


David,

The fact that you're getting a little burst of domestic hot water suggests that the boiler is capable of circulating hot primary loop water through the heat exchanger, but doesn't necessarily do so when it needs to.

What seems to be lacking is a recognition that domestic hot water is now being drawn off, and that the boiler needs to fire up and divert the primary flow through the heat exchanger.

A good place to start might be the flow switch (usually in the bottom of the boiler, where the cold water supply comes in) or the electrical connections to it.

A.

Oct 05, 2008 | Heating & Cooling

1 Answer

Domestic heating system


Contacted supplier and they have arranged a visit.
Thanks

Sep 14, 2008 | Heating & Cooling

1 Answer

Thechnical data of greenstar 15 Ri worcester


Greenstar 15Ri Technical data table Technical data Title Value Height (mm) 600mm Width (mm) 390mm Depth (mm) 270mm Weight 22.6kg Output to central heating and domestic hot water 5 - 15kW (17,060 - 51,180Btu/hr) SEDBUK Value/band 90.1%/Band A Solar compatible Yes Maximum horizontal flue (100mm ø) 4,600mm (inc. terminal) Maximum vertical flue (100mm ø) 6,400mm (inc. terminal) Maximum horizontal flue (125mm ø) 13,000mm (inc terminal) Maximum vertical flue (125mm ø) 15,000mm (inc. terminal) Gas connection 22mm compression Heating flow and return connections 22mm compression Maximum flow temperature 82ºC (180ºF) Primary water content 1.1 litres NOx classification Class 5 Noise output level 42.7 dB(A)
Hope this is what you wanted..

Let me know if you need any thing els.....

Sep 10, 2008 | Heating & Cooling

1 Answer

I have a bosch 24cdi rsf combination boiler reaching 3 bar pressure and blowing off through release valve. any suggestions.


if this occurs when the unit is in use for only hot water, there will be an internal leak in the secobndary heat exchanger, you will have to replace it. check first that the charging link has been removed when testing to ensure it is not passing.
if it happens when the heating is switched on then check the presure in the expansion vessel ( dump all presure from system and use a car foot pump with a gauge there should be 1 bar presure) that is the big red thing behind the pump, if water comes out of the test valve on the front of it when you try to test it or it wont hold the presure you will have to replace it (a nasty job you have to strip half the boiler) if you can pump it up make sure you release the presure in the system as you pump it or you will get a false reading

Sep 07, 2008 | Heating & Cooling

1 Answer

My Worcester Bosch 35cdi boiler is flashing temp then backwards t forwards t, whats wrong with it.?


35 cdi worcester combi about 3 years old,heating not working,hot water works fine.It's been serviced not long ago.Room stat turned up and trv's ,but boiler want fire up,there's power to the boiler and the room stat the built in time clock is switched to on, but still nothing. do you think it could be the diverter valve, when i got there it was flashing SE which mean's it needs a service,cleaned the heat exchanger and burner with the proper worceter brush etc then re set boiler with technical, they also said it could be the built in clock and told me to disconect it, and just use the heating stat to control it.It still want fire.

Sep 03, 2008 | Heating & Cooling

1 Answer

My central heating system comprises a worcester bosch system boiler and honeywell smartfit controls. The problem I am having is that the central heating doesn't seem to knock off at the preset temperature...


You could possibly have an ignition problem. The controller will go into a lock-out condition if flame is not established. Turning the temperature control down and then back up may be serving to reset the control system so it tries again.

May 21, 2008 | Honeywell Heating & Cooling

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