Recent content by gcm

Good day boilerdoktor, thanks again for the advise, Yes, the diverter valve on my boiler has a black top cover (with ZSR printed on it), so mine would be the earlier one. Understood, the solenoid is energised/diverter valve opened when CH required. As my CH is working, then I assume it...

Good day again, Can someone confirm correct diverter valve for the Highflow 400 BF? My manual and one I downloaded from internet has the part number as 8716142482, although I cannot find anything searching for this part number. Worcester site Hiflow 400 BF spare parts list has part...

Good day all, Just been looking at installation/service manual and thinking through my problem. It would appear as if the various thermostats and controls are working correctly as hot water OK by itself and CH OK by itself, the problem comes when both on together. If both hot water & CH...

Good day boilerdoktor, thanks again for the reply, I agree that "symptoms" appear to be a little odd. I assume that if sludge build up a problem (I have read about that being a particlar problem with this boiler) then the boiler would not function properly in hot water only mode or in...

Good day again, I forgot to confirm, there has been no recent adjustment of the boiler or any other associated systems and all in use settings are as normally used over last 10 years. Regards

In my last post there was an error and it may confuse. Line that said; I stopped hot water taps and radiator shut down normally, with pilot lit, when opening taps it cycled normally. I shut off taps. Should have read; I stopped hot water taps and boiler shut down normally, with pilot...

Good day again Agile, many thanks for your perserverance, Things have moved on a bit now. Yesterday, I started the pilot light without any problem (everything off). Switched on electrical supply, selected hot water "on" and then central heating "on", moved water and heating rotary...

Good day boilerdoktor, thankyou for your response, I bought yesterday and arrived today a new expansion vessel, which I agree should be reasonably easy for me to fit. Each time it has been serviced or when a new part fitted and on general inspection, everything looks like new still, I...

Good day Agile, thankyou for the response, I am surprsied that the trade price is so high, I looked and can get a Worcester Highflow 440Cdi at £1608 INCLUDING vat & delivery (many seller's at £1620) without any trade requirement, I suppose that the internet dogfight to sell really does...

Thankyou Agile for the reply, my thoughts precisely. From what the emgineer said I expected a quote of maybe £150-£200 (perhaps a bit more if the other parts were needed, he siad if other parts not needed he would keep them for stock, or perhaps they are returned, I am not sure). I was a...

Good day, Worcester Highflow 400 BF about 10 years old, originally fitted to new water/central heating system, has always been very reliable, from memory, new diverter valve fitted under warranty in first couple of years, since then nothing until last year replaced pilot burner tip. Have...