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Hi I currently have a powermax 155 and had enough of it. So im in the market for a new boiler. I live in a 2 bedroom mid terrace. Quite small house, new build. Any idea of a good smallish boiler - tobe honest anything is better than the powermax I have. Been looking at the Biasi Riva...

I have serious problems with my powermax 155. No hot water or a trickle may be. CH is fine. I have replaced the blending valve which has made it a little better but probably enough ht water to fill a sink up max. I have read the coil is probably lime scaled up. I live in an area where we do...

Hi Kev You helped me earlier this week with my powermax 155. A plumber changed the blender valve but the temp is still low. Not sure what else to do ? Any ideas ? Can I increase the water temp ?

I got a plumber round in the end, best be safe ! I wont be touching a boiler again. It fitted fine. But the temperature isnt great still. Is there a way I can increase the water temperature ? Thinking about throwing the bl00dy thing out !!

Ok I have changed the blending valve. Well I didnt, I got a corgi qual. plumber. Boiler is running fin but the temp of the water is still luke warm. Is there anyway I can turn the temp up ? Thanks

Hi I have replaced my blender valve - p757 and it works a treat so thanks to everyone with your advice. Now it is leaking. Jesus when will this nitemare end. Any ideas ? Its not leaking too much but enough, on the topn and bottom pipe. Shall I call in a plumber ...

How would you got about "descaling" the boiler. Im replacing the part "P757" later on today but for completness I would like to descale the boiler. How do you put the DS3 in the boiler or does that sound thick ? Thanks for all your replies very much appreciated. You have put my faith back...

Yes I had moved the screw. The black cap moves freely, its actually really lose and doing nothing. Is it meant to be tight ? I havent turned anything else, not sure what you mean by the brass spindle as I cant see one. Looks to me its messed up and needs replacing which is a pain but if...

Thanks nicknox, I will try that. Any suggestions what to clean the valve with ? Someone at work suggested DS3 is it ? Sulphamic Acid. Thanks

Hi again I have just touched the 3 outlet pipes. All 3 pipes are really hot. I run the hot water tap in the bathroom for about 30 seconds. I have now touched the pipes again. The pipe coming down is still really hot but the pipe going down and the pipe going right is cold. I have used...

Thanks Kevindgas Yes thats right, I will turn the water off at the mains which is under my sink. Sorry and thanks for all your replies, so I will : 1) turn off water at the mains (stop cock) 2) undo the nuts and take the blending valve off and give it a clean as I have read that...

Hi Kevindgas Thanks for your help, much appreciated. This may sound stupid, if I undo the the 3 nuts at each end so I can take the valve off will no water come out anywhere ? Sorry if sounds stupid. Shall I turn the boiler off and the water at the mains ? I will see if the head comes...

Hi Kevindgas I am not a plumber but could I do this myself ? Replace the blending valve ? I know what you mean they are a beast. Huge bl00dy things. Ive taken the cover off and can see the valve half way down on the right hand side. Black head with 3 way pipe outlet (if that makes...

Hi Stingray My boiler definatley says 1500, cant see any X im afraid. I had British Gas cover for years and I had 4/5 engineers come out and all said we dont touch them boilers. Or you need a new boiler. Sorry,.. but idiots. My blending valve is hot on all 3 points at present. May be...

Hi First post and first time on the site, so please bear with me. I have lived in my house for about 4 years and had terrible hot water. I will get about 30 seconds of it then cold. I have a powermax 155 boiler. I have been reading and only thing I can find which is causing the lack of...