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it was excessive sludge build up in heat exchanger and had actually corroded it internally which was almost unbelievable as it wasnt very old at all.......vokera replaced it free of charge even outside warranty which makes me suspect it could be a fault/poor manufacture of the part.....hope this...

If you have replaced the seals and it is still laking and pistin ring is pitted i think you arefighting a losing battle. I dont think you can get a replacement cartridge for an 88. Anyway...30 years is a superb lifespan for a shower!!

Could possibly be water hammer.....does it go away if you turn down the pressure of your cold main supply? (turn down main stopcock)

Are pipes under floor??

//www.diynot.com/forums/viewtopic.php?t=210590 you probably dont want to get involved.....it will ruin the rest of your night.

you obviosly havent read billybosh' thread :wink:

Could anyone please tell me how one works??? :lol: :lol: :lol: :lol: :lol: :lol: :wink: :wink: :wink:

As seco said.....feet with screw holes are the best.....any of these trays ive fitted i have put a heavy bed of silicone on the tray surfaces that touch the walls and then screwed down the front 2 feet as the back ones are near impossible to fix down......once the silicone sets the tray is solid.

Stupid question first......have you cut away the insulating foam so that the cylinder stat is touching the copper of the cylinder?

I think its the same as HEP....i know some plumbers that dont use inserts in HEP pipe going into HEP fittings , and they've never had a leak. I always use inserts as basically it gives u peace of mind. I understand where you are coming from though

I think i would be cutting the heating pipes live and putting on a couple of ball-o-fix valves.

Thats a shower deck mixer. Monobloc is a tap that goes thru a single hole in the bath. Deck mixer goes thru 2 holes.

Yes...i think you are supposed to use inserts....i used these copper pushfits on a new build as they were specified by the architect and i had nothing but bother with them......about 1 in 10 joint leaked....had to use a demounting tool to seperate leaking joints and could never see anything...

Could be a possible air lock in the return pipe in the loft....can u crack open a joint in the loft on the return pipe above th etowel rail? Seems a strange way you have decided to pipe up this towel rail....Is it a dropper system/concrete floors?

Ive never seen a monobloc bath tap with 22mm tails??? Are u sure it isnt a bath deck mixer you are fitting?? If so , you can get a flexi-tap connector with 22mm at tap end and a 15mm connection at the other. :D

I believe you could fit a wireless 2 channel programmable roomstat. For combi boilers it is a 1 channel u need. I think Honeywell do a good 2 channel Wireless Programmable Roomstat. :D

Wrap some ptfe tape around end of nozzle before you shove dishwasher pipe on to it . Then fit your jubilee clip. Cant beleive u forgot to cut nozzle.......classic!!!!

Possible worn diaphragm in the divertor valve maybe. Diaphragm not tight enough to switch on microswitch. A divertor valve service kit is available i think.

Maybe you could add goldfish to your heating circuit.

Sounds like a blocked Venturi to me.......cleaning is pretty straihtforward but should really be done by a RGI. If you have your boiler instructions , procedure is in there......if you havent got instructions i can email u a copy of them. :D