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Hi Tony, Clueless, I wasn't present when they came to repair. The common fault is the F1. Happens two or three times, then new board and sorted! The last one was over the Easter bank hols, the call centre told my customer they don't send out engineers under warranty, and they had to contact...

Hi guys, Tried the Viessmann, fitted about 9 in the last 12 months. Four of which have gone down within 28 days.. (PCB's were changed, all ok). I think that works out at 44% breakdown rate in first month! Although I do think they're a great little boiler, especially the new 100 with the...

Hello Bunnyman, Agile.. Not been on the site for ages, but still fed up with poorly built boilers and the back up service to boot! Can't we all throw a few grand in the pot, and build a proper boiler? Triple BBB (British Built Boilers).. Head in hands, on the edge of London Bridge!! :cry:

Hi Fellas, still haven't got sorted for the 'chatty' thing for engineers. But! I've had a few enquiries through my site concerning Vaillant breakdowns. I know there're are a couple of my ex colleagues up that way, anyone know some contact details for referral? or website URL's? Many thanks... Mark

Well, it could be a couple of things: A small amount of crap in the main heat exchanger can cause all sorts of noises. (hope you had the sense to fit a filter with the boiler, powerflush or not!) Or, it's usually something to do with the air/gas ratio (loud howling). In which case you need to...

Jeeze.. what's the bloody problem with these people? it'd take less than 5 mins to just fit a new cap for less than £20........ No wonder this industry has such a bad reputation... Bunnyman... we should get together... and take over the world!

Hi, I think ChrisR has probably nailed it.. If the systems been drained, and re-pressured, it's mostly likely to be the Auto Air Vent on the pump. Especially as it appears to be on the right hand side. I worked for Vaillant, and the bloody things would always leak after a drain and refill...

Hello forktruckman... Well, could be a few things, probably something to do with the rectification electrode when the boilers in initial heating mode, on ignition rate (low) for the first 2 mins. I'd suggest getting it serviced 'properly'. When was the last time? There are a few other faults...

Well, the green neon does extinguish with a decrease of voltage to the diaphragm pump, then the modulation is controlled by the Flow ntc, which varies the voltage to the diaphragm pump via the PCB, which has the DHW overheat stat wired in series.. Which points to a rapid rise in temp on the...

The fact that the green neon drops in and out may indicate the water section is shafted... Check the hydraulic piston rises and remains steady when the hot water tap runs.. You've got one of the most hydraulically complex domestic boilers ever built.. Good luck

I'm with the 45yearsman, sounds like the plate is severely blocked restricted. However, we'll all be in the dark until we find out what model. Sounds like a VCW 242/282E? Have a look here and see if you can see it? http://www.vaillantservice.co.uk/VAILLANT/Identify_Your_Vaillant_Boiler.html

Gasbanni and *** Army... Posted my first post here today, and I'm impressed with the new company I'm keeping. I did enter the details for the combustion chamber, and I'm waiting for the response. Lets hope AC Milan aren't as good as Blackpool for the return leg! Glad I was working Tues night...

Mr.W. Yes I do, mainly Essex and Kent, but I do travel up to Herts, and north london a lot. Especially at weekends.

I might be missing something fairly substantial here.... But! I understand that the ATAG and INTERGAS boilers have a dual main heat exchanger? So, (please forgive my ignorance) but what prevents the dormant mains water in the heat exchanger reaching 70 or 80 degrees when the boilers in...

I take your point, and being well aquianted with Vaillants for some years, I know the new Ecotec intimately, and also know that they are considerably less 'robust' shall we say, than any previous models. But from a repair perspective, with approx 6 or 7 different pumps, several different fans...

Yes, I'm registered, unfortunately!, and an ex-corgi inspector! **********

Hi, We've installed a few Viessmann boilers, as replacements for older Vaillant models. This is due to the build quality of the Vaillant Ecotec range. The Viessmann seemed to tick all the boxes, and looked like a dream to work on too (from an engineers perspective). Also the 5yr warranty was a...

I'm dumbfounded that anyone calling themselves an engineer would fit 3 brand new PCB's consecutively. Unbelievable! Sounds like the neutral was wired in to terminal 3 or 4 to me. However, even when wired in reverse polarity the boards don't normally blow. In my opinion, this ones down to lack...

Well, all new here, but my website gets flooded with mails for advice, so thought I'd go to the source, and have a chat... Anyone fancy building a decent boiler? I'm fed up with the junk they've been selling for the last 10yrs!