Bosch Worcester 25si boiler pre 2003 model?

My system seems to have developed a fault in that despite all hot water taps being off the hot water demand light comes on which triggers the gas to ignite, the system the creates the most awful bangi ... more

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worcester 25si?

when i run the heating it works great for a couple of hours. then it knocks itself off. eventually it`ll come back on but the heating has cooled off considerably. we`ve found that if you run the hot t ... more

whats wrong with my worcester bosch greenstar 25si?

Hello,iv got a worc/bosch 25si/30si combi,which has been switching itself off.When i attempt to switch it on i get a lot of clicking and whirring sounds but fails to switch on.Eventually it will go on ... more

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If I turn the thermostat down the boiler turns off?

Hello, Can anyone please help. I have a Worcester 25si boiler & would like to turn the thermostat down however, even if i do this by a small amount (even 3 degrees) it turns off. Any idea of wh ... more

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Pilot light on Worcester Bosch 25Si?

The pilot light has gone out on this and I have been told it is self igniting but it hasn't done this. Can I do anything to get it reset ?

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How do I reset the pilot light on a Worcester Bosche 25Si ?

I have the above boiler and the pilot light has gone out and no where in the manual do it tell me how to relight it

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Worcester 25si?

I have a new boiler nearly 6 months old. Worcester Bosch 25si. For the past 6 weeks or so I have been having to fill it up every single day as the pressure is on zero. There is no evidence of a lea ... more

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setting timer ?

how do i set timer on my worcester greenstar 25si/30si boiler as there in nothing about this in manual , thanks

Eco button turns itself on - Worcester 25Si?

Combination boiler works well and has been serviced annually for the 3 years of it's life. Now the ECO button is on all the time. This means that when you want hot water the system runs, triggers heat ... more

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Losing pressure on Worcester combi boiler?

I have a Worcester 25Si Greenstar wall hung combi boiler, installed in 2005 upstairs in bathroom cupboard. Just prior to Xmas last year (2008) I noticed that the pressure had dropped to below 0.5 ba ... more

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on pressure?

i have a worcester 25si boiler and it was working fine until some builders took off 1 rads and then put it back on there are now only 5 that fully heat up and the rest just heat up a tiny bit or not a ... more

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where exactly isthe filling loop?

where exactly is thefilling loop on worcester greenstar 25si there is not a plastic key anywhere

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worcester greenstar 25si boiler radiators not heating up ?

select the on posistion for heating, boiler fires up then seems to cut off after about 10 seconds, getting hot water ok.

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Worcester 25Si?

Hi I had my boiler serviced today, apparently the pressure was low so it was filled up but now the boiler won't light at all, it was working earlier but seemed to go off after my daughter had a bath. ... more

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The pressure on my boiler (Worcester Greenstar 25Si) is zero?

After bleeding radiators the pressure on the boiler is zero and the boiler is making lots of noises. Should i turn it off? How do i get pressure up? Is it something i can do or will i need a plumbe ... more

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How do I put some water in my Worcester 25Si/30Si?

We have had a leaking radiator which is now fixed. I have searched through booklet but cannot find how to put water in to raise pressure.

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Worcester 25Si ...Hot water not firing up at low pressure?

I've got a Worcester 25si around 7 years old combi, recently it decided to have a problem with the hot water. You will need to turn the tap at full power in order for the hot water flow switch to k ... more

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How can I increase water pressure on Worcester 25si?

I have a new Greenstar Worcester 25si and the water pressure has gone down to almost zero. I inserted the plastic key under the boiler and turned it but it did nothing. It appears to have a tube which ... more

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recharging my worcester bosch 24si boiler?

i need to recharge my boiler, but i have not had to do it before now and i am not quite sure about the procedure.When the boiler was fitted the plumber showed me what to do but that was back in april ... more

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How do I reduce pressure on a Bosch Worcester Greenstar boiler?

I have to do some maintenence work on a radiator and I have been told if I reduce the pressure (currently set at 1.5 bar) on my boiler (Bosch Worcester Greenstar 25si/30si) I can do the repairs withou ... more

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