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Without model details I can't advise much. I do know the Alphas have a stupid flow switch on the water main inlet. I don't work on them much but has your plumber checked this? If you provide model details you'd get more help.

Parts are most available. I would strongly suggest considering replacement. If these boilers go wrong, they do so spectacularly with bad results. The casings on these (most of the range) are positive pressure. That means if there was corrosion or damage, the case can spew out products of...

A lot of combis out there will have a 15mm inlet on the cold water inlet. Its not as simple as "it's a 15mm connection so 15mm will do". Each system needs to be carefully considered as you may have low flow rates, poor pressure etc. In cases where there are issues, you may see 22mm (rarely...

It would depend how you have this wired. I'm assuming you have a multimeter or means to test this... On the stat terminal base there are two terminals marked A & B. If you have 230v on terminal A then you have a supply to the stat (be it from the boiler or spur) then the stat would...

It does sound like a Fortic tank. The fact it's got a storage vessel on the top, would strongly suggest its vented. Your local plumbing merchant would be able to obtain one for you but I would be surprised if they had one in stock. Here's a link for you...

Sentinel x800 is good too (jet flo). Can be used for power flushing or residual circulation. I've found this to be good for both Carl

If you weren't supplied with the plastic cap type crimps you can use normal crimps.

Hi, Doesn't matter which wire to which wire! Just cut them and join them. The plastic caps are crimps.cjust pop the wires into the cap and crimp shut, preferably with a crimp tool. Good luck Carl

Water mains often form a earth bond from your house electrics, as does your gas main. I've heard story's of people getting belted when they haven't cross bonded a gas pipe when cutting it out. I think it is incredibly rare. In the gas game, we use what are essentially car jump leads. The...

I use a regin hand pump myself. I threw away the valve (agree its total crap!)and replaced with one of a cheap halfords foot pump. Never had a problem since!

Have you modified anything near the cylinder? I'm assuming you have an indirect vented cylinder? The Hot water pipe leaving the top of your cylinder (the one bang in the middle, right at the top) should be angled slightly upwards towards the vent. The vent goes up to the cold tank and hangs...

Hi, First off id be checking the strainers in the hot and cold supplies to the shower. There is usually a mesh strainer on each supply. I've also had a customer complain of this recently and found her shower head so badly scaled up, nothing could escape it! Check this also and if required...

Sorry to sound like a nag but this one needs looking at by an engineer! It will require removal of a part or two for investigation and this will require case removal... Sorry!

You may be getting a bit of cross flow. It is possible the mains was pushing through the bidet tap and pushing mains water into the hot system, therefore, cooling it down. A long shot but dificult to say without having a look. Perhaps the non return valve is knackered in this tap or not...

Have a look at this... http://www.aqualisa.co.uk/upload/INSTALLATION%20GUIDES/Install_QtzDigExp_adj.pdf It gives the processor dimensions and probably the rating of the supply. I think it's 3 or 5 amp. Im sure there is no issue with a direct cylinder. I've just realised you put...

To be honest I don't know as I've never asked them to come out. Give them a call on 0800 408 5500.

Just make sure it's the pumped version. It might be prefixed on the model as HP. Ask the merchant anyway.

http://www.google.co.uk/products/catalog?q=aqualisa+quartz+pumped&oe=UTF-8&hl=en-gb&client=safari&um=1&ie=UTF-8&tbm=shop&cid=9159958560624483546&sa=X&ei=EPIGT5agDdKDhQft5tC7CQ&ved=0CEsQ8wIwAg

A quartz would work! As long as the processor is lower than the tank you're ok. This is usually easily achieved as the tank is on a stand in most cases. The hot water is not a problem. If the processor can't be put in the loft, an airing cupboard will do. The quartz is an all in one...

No problem... I am very concerned you said you've moved your flue up as it was dripping. It sounds like the flue hasn't been sealed up outside and your gas engineer should never do a temporary job on a flue!! If Gas safe knew you were left with an unfinished flue or flue left in a dangerous...