How to mend Bosch Greenstar

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Greenstar 24Ri boiler, fast flashing - can I reset?

Greenstar 24Ri boiler won't light and the blue light is fast flashing. From the manual I can see that the iss... [Read more]

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Boiler cycle?

My boiler only fires up for about 90 seconds greenstar 4000

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Greenstar 25 combo boiler?

The washers on my worster boiler key seems to big what can I do to repressurise it

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Greenstar Highflow 440?

d5 code appeared, pressed spanner button till red then pressed ECO -- 11 appeared but still the pump does not ... [Read more]

Red light glowing worcester greenstar?

greenstar28I junior combi MK lv red light permananley glowing, boiler runns ok whot water ok

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How do I rectify aU9 Code?

Worcester Bosch Greenstar 37CDi Combi showing code U9? My boiler is showing code U9, I know this means that th... [Read more]

Siemens RDH 10 RF Thermostat not triggering heating?

I have Siemens RDH 10 RF Thermostat and a Worcester Bosch Greenstar 30CDi combi boiler. The battery in the th... [Read more]

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Worcester Bosch Greenstar ri 24kw?

WB Greenstar24kw Ri, heating working , but does not ignite for hotwater, so no hot water. (pressuried tanks... [Read more]

Broken filler key stuck?

How do I remove broken part of filler key from Worcester Bosch Greenstar cdi

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I have a greenstar 440 displaying d5, I have tried the reset code ?

using service mode , eco button and Cs but it will not display 5a I get every other code eg 1a up to 4f then... [Read more]

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over pressure?

I have a greenstar 24i boiler, pressure is normal, when I turn heating on pressure increases and eventually op... [Read more]

Greenstar 25Si/30Si?

Greenstar 25Si/30Si clock not working. I can manually set hot water and heating and they work fine. I suspec... [Read more]

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Worcester Bosch Greenstar Ri v Beast from The East?

My boiler has been struggling to reach thermostat temperature and has now started gurgling like its boiling a ... [Read more]

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re pressurizing boiler?

Trying to repressurize Greenstar 28i boiler and had the key in position but when turning the neighbouring whit... [Read more]

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my greenstar highflow 440 boiler is showing an error code C1?

the boiler is showing a c1 error, fan speed too low, how do I fix it please?

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worcester greenstar 30Ri compact blue pulsing light?

I have a sealed /unvented cyl system, my boiler has a pulsing blue light,( not constantly flashing. ive tried ... [Read more]

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how to fix worcester greenstar 28i ?

locking out on hot water . fitted new flat plate and thermistor but still locking out

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how to reduce boiler pressure ?

i have set the bar pressure on my greenstar 37 cdi to high. how do I reduce it to proper level. Do I use the k... [Read more]

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How to replace the timer on a greenstar 28i junior?

Do i have to remove the entire casing to replace my timer on my greenstar 28i junior? If not how does it pop o... [Read more]