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That was exactly what I was expecting to see. Imagine my surprise then to see such a wierd motor controlling the diverter valve with no 'obvious' means of knowing where it was. Yep! Maybe, but how does the control board know where the actual position of the actuator is? I'm really hoping to...

That IS a thought that has occured to me. They damn-well knew their boiler was f-ed, of course they did! AND went out of thier way to dismiss these problems, even to the point of stating that they were quite willing to sell the property to someone else two MONTHS into the purchase, their point...

The diverter valve actuator motor is a complicated little beast, as is the drive circuitry on the control board which drives it which consists of two H-bridges under PWM control the supply to which is an on-board generated 24V DC supply (hence nothing directly to do with the incoming 230V AC...

It is exactly BECAUSE I have just bought a house is why I now don't have 2p to scratch my a$$ with! £1,000 to solicitor, £3,000 Stamp duty, £3,000 to sell my other house, blah blah money-for-old-rope blah. Repaired PCB, then another fault made itself present! And on it goes. As usual Mr...

Having a schematic did help somewhat. However, in parallel to my on-going amaturish repairs is the nagging thought they hey, maybe (just maybe, who knows?) there is a perfectly good second-hand boiler out there with my name written on it.... Yes, I'm taking a punt, but if I don't ask the...

Yeees. I'm not entirely stupid (I hope). Just wondering if anyone here had a second-hand one for sale? No doubt I'll get shot down in flames for asking.

Fair point. But beggars (aka me) can't be choosers and I just want the damn thing to work! Is it really beyond the means of man to reliably heat some water up? Every house I have bought (4 of 'em), I have inheritied boilers with major problems. Andy

110% Agreed. The design of these so-called 'PCB's is shockingly rubbish. I do not even see conformal coating applied, which would go some way to protecting them. Maybe, but the cost of actually MAKING these control boards as they are produced now I cannot see why they would cost anything...

My close friend who is also an RGI registered plumber will be performing the swap and it is on his recommendation that the old boiler now be replaced. He reckons that if a like-for-like boiler can be sourced then removal of old and installation of new boiler shouldn't take him more than 1 1/2...

My Glow Worm 30cxi condensing boiler is definitely on it's way out. It is leaking and the actuator on the diverter valve does not work (PCB fault). Hence does anyone have a boiler that can fit in the same hole / attach to the same plumbing for sale please? Cheers, Andy

I have the greatest of respect for Mr. Agile. And yes, Current is measured in Amps. Absolutely no disagreement there! :) Andy

^ sounds counter intuitive, but think of a thermocouple like a small battery. Yes a battery can produce a current when connected to a circuit, but one would use a volt-meter to measure terminal voltage. Ditto thermocouples hence measure the voltage across it to determine temperature seen at the...

^+1 Did you do your test with the pilot lit? As an aside, flames produce ions which may have confused your meter.

I am no builder or plasterer. But if I were faced with that problem I would start by watering down some PVA and brushing it liberally onto all exposed surfaces to seal / provide a good key. Then using cement, fill the gaps to less than 5mm from surface before finishing off with plaster. The...

Jeez, all I asked was MAYBE BRs applied, to check if so. Wind your neck in pal & try to be less bl00dy rude in the future.

You're American? Maybe regs in USA 'slacker' than here but look at that linky in my post. I have just purchased a home here in the UK 3 months ago. Seller mentioned that he had fitted a new bathroom. Hence my solicitor was all over him like a rash and hence DID cause problems for him to sell...

Indeed. My point was that it consisted of a string of SURFACE MOUNT :shock: components across 350V. A failure in any one of them would avalanche them all to fail. In other words I do not see much consideration for failure modes in these designs as you have also pointed out - leading as you say...

Do building regs raise it's ugly head for your shower installation? http://www.competentperson.co.uk/pdfs/buildingworkleaflet.pdf Problems may ensue when you come to sell the property.

100A supply to home instantly max'd out then :)

An airlock maybe?