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err whats primatic? does that mean that the HW is actually sharing the same system as the heating rather have a coil inside through which the heating system flows to impart its heat to a separate HW water circuit and therefore the green / brown is sludge dredged up by the DS40 which has now...

Should have said that its gravity HW system

So the system is a Potterton Profile 80e and its over heat cut out was tripping daily. Its never had anti corrosion stuff in it so based on advice from this forum decided to work through the potential causes in the following order: 1) drain system 2) replace pump 3) put in some DS40 4) refill...

not sure what this means but it sound like you are short of work if you have the time to write it. if you have any relevant comments please post them

[/url] thank you - that's the sort of info & help i was looking for. it talks about using epdm hose for plumbing situations so clearly its use is acceptable - with the provisos detailed in the article. If you want to use a hose pipe and jubilee clips carry on mate - just another useless &...

sorry i didn't realise there was other types which weren't overbraided. now that its clear that we are talking overbraided epdm hose can anyone actually tell me what the problems would be? i mean bring on the airlocks - what sort of answer is that? if the pipe has a continuous rise then where...

thanks - i just wondered why it was not in more common useage.

well it is over braided for strength and stands 10 bar so it IS strong! what point are you making? it normally comes on 30 / 50m rolls & any hose supplier will stock 5/8th hose which is a perfect fit over an olived 15mm copper pipe. it costs less than copper, no corners or soldering and is...

fitting a new plastic cold water tank in the loft to replace the 40 year old metal one which sits above the hot water cylinder. the path that the pipes will run from the new tank to the current connections on the old one are tricky and difficult & will require numerous corner joints etc. any...

new old stock for sale on ebay http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130547162117&ssPageName=STRK:MEWNX:IT

well ok it should have said simply 'hotter on the electrode' rather than 'greater mass of metal' but thats just because i'mon the train and not concentrating but i think you're just being pedantic as the rest of the explanation was correct and easily adequate to convince you that i understood...

Well I had no reason to ever understand it or care about it before the problems started but I now have a detailed understanding including a circuit diagram. I replaced the three electrolytic capacitors and reflowed the solder joints on the board connectors whilst it was out. I'm clear on how...

thanks Tony but i'm fully aware of how the pcb works and its interaction with the valves - as is my pal who is rgi fella. i wonder if you read my previous post properly as it clearly explains the sequence of events and faults. i dont understand why you consider either he or i dont comprehend...

thought i'd let you know what the problem was: the main gas valve was leaking intermitently and the HT cable was cracked and shorting out thus preventing a spark. when heat was called for the pilot valve was opening correctly but as there was no spark it was not lighting. the tow valves are...

gas turned off

well, my pal who is a gas safe fella but only does installs and not repairs looked at it an hour ago and confirmed what i reported on here:the gas valve is indeed opening without ignition. he fixed the ht lead as that was cracked and set the elctrode gap to the correct size (apparently it...

thanks for the help guys - will get a pro in

it is the correct information! the gas meter is not lying you pillock - the meter needle moves around showing gas is flowing through the meter and the burner does not light

presumably both the gas valve and the spark are controlled by the pcb so is it likley that this is the cause of the problem?

thanks for your reply but is it normal for gas to continue to flow?