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Done lots of research and I know the warnings already such as being wary why the boiler was taken out, not knowing its history, losing warranty, installer blaming the boiler if the install fails etc. However, I can save £1000 for a high quality Viessmann Vitodens 100 system boiler (new 050 is...

Sounds like it got really unreliable but it is a combi so has a shorter life than other types and with your extensions there was more demand from it.

May I know which boiler you previously had, its age and which one you replaced it with?

This is its third failure (fan went about ten years ago and a trap filling mode issue). It's also unable to reach temperatures as high as it used to so might inefficient (could be due to system full of sludge as rads are cooler in lower section)? Also, it's very difficult to remove the cover as...

I have a Worcester Bosch Condensing System Boiler. The fan has gone. It's 20 years old but otherwise working fine. Please help me decide the best option to go with: Repair current boiler for £360 using WB repair service OR Replace with Viessmann boiler for a total cost of around £1550...

R is also part of the Combi model coding on this range "Greenstar R25-30 HE Combi" according to WB. Source: https://www.worcester-bosch.co.uk/professional/support/literature/greenstar-he-combi-installation-instructions I think the misunderstanding that the R only applies to Regular boilers in...

Incorrect. The "R" is irrelevant in this context. R 25 & 30 HE are combi Condensing boilers. R 28 HE is a system Condensing boiler. Source: https://www.unipolhousing.org.uk/media/2760/worcester-greenstar-281.pdf

100% not. I have a hot water cylinder.

I have a diverter valve on a conventional boiler? I'll look it up in the installer diagram. Definitely not a combi.

I have a diverter valve on a conventional boiler? I'll look it up in the installer diagram. Definitely not a combi.

Thought diverter valves were only on combis?

It didn't make that sound when switching on/off before the fault started....

Any advice from what is on the video please?

I will be calling an engineer but would like to know what's going on if anyone can advise: C1 is a fan error code but in the video below there is an odd ticking sound that occurs for a few seconds after switching on the boiler and/or activating heating. It doesn't make that sound again (as you...

After my boiler again developed an issue with the fan after the boiler was switched off for some time, I have read on this forum, elsewhere on the internet and seen many YouTube videos where the fault is discussed. It seems to be a common fault that the PCB can blow if the boiler has...

If it is a fan fault, what was the relationship between it failing after the boiler had been switched off and out of action for 10 days?

The C1 code is showing (error with fan) after I first first hear brief whirring-ticking, like the fan motor is trying to get going, so possibly more likely the motor as the display is normal until I attempt to run the boiler? I realise this is possibly down to a faulty PCB, which could have...