Recent content by fastbike

Just an update and some observations that might be useful to people: I managed to get the complete new water section quickly from heatingspares247.com Fitting this was quite easy and now the hot water works fine. CAUTION: I could have ordered the part from a couple of other web sites, but...

erm.. not sure whether I missed the point or not... If vaillant mention 8.7l/m then I'm presuming that it must operate OK at that rate, so the higher rate I am getting ought to be sufficient to definitely operate the flow sensor. Incidentally, I believe that the diverter valve itself is OK -...

I've got a problem with my VCW GB 242 EH being reluctant to fire up (not quite operating the microswitch when DHW is drawn; subject of recent post) I need to confirm whether the fault really is in the water valve section (diaphram etc) or conceivably the secondary heat exchanger being scaled...

Well, it's had the recommended routine maintenance but I wouldn't be surprised if the whole system does need a good clean. Good idea! On the other hand, after around 20 years of continuous service in a hard water area with no previous breakdowns, I think it must be one damn robust boiler!

OK, well I've got this complete water section ordered anyway. Can anyone give any fitting tips ? Thanks. - Steve

Excuse the "urgent" but I'm hot-water-less : The hot water supply has grown increasingly intermittent on my combi until now it rarely works. Central heating is fine. The cam by the servo valve isn't moving reliably, insufficient to operate the DHW microswitch. If the cam is "encouraged"...

Yep, I assumed that those scale inhibitors were complete nonsence, although as mine was free (it's a prototype - a friend designed the electronics), I assumed that it wouldn't do any harm. Now, I'm rather more convinced. When I completely replumbed the kitchen recently, there was no scale to...

Oh, and that is after approx. 18 years of use, by the way !

Thanks, Chris. Yes, I've already got a "scale inhibitor". Despite being a professional engineer, I'm convinced that it works exclusively by magic. It's just a few turns of wire around the incoming water pipe, with a few magic electric waveforms passed through them. Nevertheless, the...

- oh and by the way, I did't get any instructions whatsoever, or the "replacement disc" :? - Steve

Wow, thanks Chris. That's exactly the sort of info I'm looking for. The kit I bought cost around £80, made by Zilmet so I assume that it's non-original, but looks decent quality and it did come withe decent set of 4 new pipes, replacement washers etc. I've just checked - my controller has...

Gosh, that's quick ! Thanks ! Do you know what these mods actually do ? I'm not sure what "disc" is being referred to; I've certainly not got any spare discs with the kit. Really just trying to establish whether this aspect is critical Thanks again - Steve

Hi Folks, The plastic-housed secondary heat exchanger leaks so I have got a the recommended replacement 06-5034 which is a more modern metal plate type. It's supplied with a new set of pipework to allow it to fit, but I've heard that some adjustment of the control circuit (component...