On 30/09/2020 13:41, The Nomad wrote:
All assembled knowledgeable folk,

I fear the time has come, the ravenheat boiler has expired, no spark, fan
runs etc. etc. but not spark, not even the clicking from the igniter ...

Do I:

a) buy a new PCB and hope or

b) Get a new boiler - this one is knackered, rusty internally (DAHIK - IJD
- OK)

if b) as I suspect it will have to happen in the next short while anyway
Worcerster-Bosh, Vallaint or ???

Your thoughts on makes is welcomed

I'll throw one out there...
Viessmann

My combi at home is a German "Micromat EC" (originally bought based on
"Dr Evil"'s recommendation!) which at the time it was installed the
plumber was impressed with its radial burner box etc, more a thing of
commercial boilers than domestic apparently. It's now around 16 years
old and admittedly I've had to replace the diverter valve a number of
times, the pump once, hot-glue the condensate siphon, replace a number
of dead o-rings on numerous occasions and so-on but on the whole it's
been superb, built in weather compensation with user customisable
temp/flow ramp, ideal for the UFH. Certainly never had to get an
engineer to do any repairs; so having looked at what's around Viessmann
appeared to be the closest thing in terms of "quality" so that would be
my next replacement rather than the go-to WB or Valliant.
Worth checking out as an alternative.