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Hi guys, I'm back, I'm still trying to fix this ace high boiler, I bought a service kit for the DHW switch off ebay and it cost £28 (instead of halsteads £68 and the local merchants £45) It comes with all the innards springy bits and once you take off the big nuts ether end it fits in...

Hi Mandate, thanks again. I'm not overly familiar with O ring thickness's and I imagine the next size O ring up from 3/32 is 1/8 so I'll go off today and see if any merchants have any (or a selection of them ). I have the old O ring to compare which is annoyingly still round, and not oval...

Thanks again Mandate. I downloded the manual but I couldnt find much about the O rings. Well I've taken the microswitch off, I undid the hex nut and retrieved the spring and spindle thing, as it shot across the room at 100 mph LOL. I checked the O ring on the other end of the spindle...

Thanks Mandate, I found the expansion valve, It's an Ace High Model. For anyone else who can't find it. It's at the top, at very back, on the right hand side, It has a blue cap. You have to be on a step ladder with your chin on the flue to see it. I pumped it up to 10 psi and it seems to...

Hi Guys, does anyone know where exactly the valve is that I have to top up with 10 psi for the expansion chamber. I know I have to drain the boiler then put 10 psi in the top. Problem is, for the life of me I can't find the valve. Didn't it used to be on the very top ? I looked behind the...