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Just a follow up in case anyone has a similar issue. The valves were closed on my Adey Magnaclean! (I'd had the boiler serviced and Magnaclean cleaned a couple of months ago. I guess the guy forgot to turn the valves back on. Doh!) Good job Vaillant were slow answering the phone earlier, as I...

Hi. So, I've fired up my 15-month old Vaillant yesterday, as it's getting a bit cold. First time since March that I've had the heating on. However, it doesn't really do anything. It makes the usual noises when I manually switch the CH on (via the attached Nest heatlink's button - just to...

It's done it again just now. The pattern is, switch on the CH and wait 2 hours or so for target temp (18deg). The stat then switches the boiler off of course, but a little later when the temp drops and it switches it back on again the noise begins. It's never done it during the initial fire, it...

Thanks for the advice other Tony! I haven't been able to contact the installer so far (no replies to email and didn't answer his mobile yesterday). He definitely didn't close all the rads as I was there throughout the install. It was a bit of a rush on the day and there were *loads* of snags...

I paid "top dollar" for a Vaillant Advance installer to fit it (was a replacement for a Potterton Puma 80 which broke down yet again so I was a 'distressed' customer with cold showers - other installers booked up for a month). He supplied and fitted the TRVs and they looked new as they were in...

Thanks for the replies - rather than second guess I'll give Vaillant a call tomorrow. I'll post back the results, as it may be useful for other people who are googling "Vaillant loud humming" etc. The only reference I could find was this which is a very similar sound to mine, but modulates...

Thanks for the reply. What does that mean for an end-user like me? I thought that so long as one rad has no TRV then you can set the others to whatever values you want for per-room fine control. The stat is in the same room as the non-TRV rad (which is by far the largest in the house, and...

I've turned the 2 TRVs that were set to 1-2 to 5 today, and after 4 hours' use the boiler has been fine - as silent as ever. It does defeat the object of having them though, ie if I actually use them to suppress the heat in the rooms that I don't use often then the boiler goes ballistic after a...

Thanks for your replies so far - I'll try switching on the hot water next time the noise occurs and see what happens. Regarding "thermostatic rad valve", I had them added as part of the install as my existing rads didn't have any. They're Honeywell ones and set at a mixture of either 5 or 1-2...

Hi. I had a Vaillant EcoTec Plus 24 installed back in September 2015, and recently it's started making an incredibly loud deep bass humming/buzzing sound that literally shakes the whole flat. I initially thought it was upstairs neighbours drilling into the masonry - it's that loud...

Thanks for the reply! Well, that area with the algae has suffered from a deluge of splash water on a few occasions, due to the guttering 20 feet above becoming blocked (it's an old Victorian house converted into 11 flats). This has been rectified for now, so that whenever it rains there's no...

Hi. My semi-basement flat (it's about 2 feet below ground level, though there's a drainage channel a foot wide around 2 of the 3 sides) is mostly dry-lined. Over the past year or so, the nails/screws have started to lump and become discoloured, mainly restricted to one side of the flat...

Ah well. Looks like London isn't the expensive place it's made out to be ;-) (I'm in the Midlands) I heard the guy on the phone saying £105 for the part and I guess the rest was labour (he took about an hour, plus 15 mins to get the part). I know they're around £80 on the net, but I...

Just had it repaired, so thought I'd reply to my own thread for future reference. There were 2 problems.. 1) The lead that powers the spark generator had fallen off - explaining why I couldn't relight the pilot. 2) The pump was 'on the way out' - it was very noisy and overheating...

Hi. Recently the pilot light on my Potterton Puma 80 has started randomly going out. First it would do it 50/50 after the central heating was fired down, then it started doing it whenever the hot water had finished. Now it's just doing it whenever it feels like, so obviously there's a...

I've just had this done at the weekend, as my Potterton Puma 80's internal pressure vessel was knackered. http://www.plumbworld.co.uk/266-3525 was the vessel I ordered, and you'll need the 'fixing kit' (which is a tenner just for a bracket!). I couldn't find the correct connector in Focus...

Thanks! I will probably go with this option (it's just a stopgap anyway until I can afford a nice new condensing combi). The guy also mentioned I'd need 22mm hose and t-compression thing (not entirely sure what they are!) and that it'd be miles cheaper for me to source them than for his company...

The engineer seemed to think it was knackered, he pressed it slightly and water gushed down the wall by the side of the boiler. Would that indicate a blocked hose?

Well I had an engineer round today to look at my dodgy Potterton Puma 80 - as I feared the expansion vessel has died. Replacement from them is £100 + vat, on the net it's £63 +vat so that's more tempting. However, the manual recommends an external expansion vessel be fitted 'in the unlikely...

Cheers guys, after I posted I found the FAQ which explains it nicely. Annoyingly though, my filling loop is behind the washing machine, what a pain! Just hope I don't have to top-up regularly.