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Worcester 24si boiler.when the heating is on no hot water and the warning light on the boiler flashes

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Check the water pressure is not low 1.5 bar

Posted on Oct 02, 2010

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I HAVE WORCESTER 24SI BOILER , THE HEATING IS WORKING BUT NO HOT WATER THANKS.


Hi Mustafa, you are going to need a Gas Engineer to fix this one. It could either be the Hot water sensor or the flow switch that activates the water to come on. Good Luck.

Jan 03, 2015 | Water Water Heaters

1 Answer

I have a Worcester 24cdi combi boiler. When I put the hot water tap on, the water comes out cold. The hot water light on the boiler is flashing rapidly and the flame indicator light also flashes red. I...


i would take it back trade it in for a new one depending on how long you've had the boiler for, i ad the same problem with mine, so i brought mine back in they couldn't fine the problem so the gave me a new free of charge, also read the manual for that thing thats one thing i never did when i first got mine

Aug 16, 2013 | 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

1 Answer

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

May 13, 2010 | Bosch 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

3 Answers

My boiler is not working, not heat, no hot water, red alert light flashing? I dont know how to reset the boiler or het it going again. Its a Worcester 24i junior. Help! Im very cold!


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

Nov 13, 2009 | Water Heaters

1 Answer

Flashing red light on Worcester 24i junior combi boiler


Pressure is ok? at 1 bar or above
I think on this one there should be a reset button [red] on the left hand top of the casing - or lower the control panel [ phillips screw on each side] and the button is on the left of the base plate. Press this and try the heating.or hot tap
P.S. if you're on a prepayment meter check you have gas.

Nov 08, 2009 | Water Heaters

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

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