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My bet is that your plate heat exchanger is blocked, and needs cleaning/replacing.

People who tile baths in should be taken out and shot at dawn. Reasonable accesss is a basic requirement for when things go wrong.

As CBW says, it sounds like the DV motor may have died, which does happen on these boilers. You can see if its working by removing the green rubber cover and observing the motor when calling for heat/HW. You can also operate the paddle with your finger having pulled the motor out first, if the...

The fault may lie with the boiler if the pump is controlled from it.

You may have a fault with the pump or valve, as said above, if so, it may have blown either the fuse in the fused switch which isolates the heating system, or the fuse in the boiler PCB, causing the lack of display.

The OP stated in the first post that RGI had stated "gas pipe not adequately protected"

CP12 is not pass or fail, it's a record of what is found at that time. The RGI is correct in pointing out the corrosion at the bottom of the pipe caused by contact with mortar/screed.

Chuck the ASHP in a skip and go back to gas ;)

The Classic is a bomb proof boiler, as said by others, parts are easily obtainable. I would take 3+ hrs to change a mid pos valve if I had to do it blindfolded, with one hand.

Evening all, I normally post in another subject on this forum, hence post count. I recently rendered my garage with (cotton white) monocouche, and would love to hang a couple of baskets on it for the summer but I'm concerned about staining the render, would appreciate honest opinions please. I...

Have another look under the boiler, it may be on the flow pipe (far left)

I can't quite see from the pic, but is there a retaining collar at the very top of the tap body which unscrews? Have come across the occasional tap spout which is a pushfit inside tap body.

A quick look at the gas pressure of the existing boiler will give a good idea of whether the pipe needs upgrading or not. It is nonsense to suggest "all boilers must have a 22mm supply", all gas appliances must have no more than a 1mb drop in pressure from the meter, regardless of pipe size.

That's awkward, I presume you can't just replace short piece? Is there room to insert a coupler, and a short piece of pipe? Maybe try and search for a M/F coupler equal sizes fit trap onto male end.

As said, you'll find blockage in or around cold feed, you can normally find it with a magnet.

A bog standard "tap reviver" set will fit that. Personally, I'd bin it off and replace it.

Your boiler has a well documented problem which needs sorting by someone familiar with Logics, hopefully it will cost you very little .

As above(y)

Most likely the plate heat exchanger is scaled up and needs cleaning/changing. Difficult to know without being in front of it. Easy job for a competent gas bod.

If you have non barrier pipe fitted in your house, then that will be the cause of your problems. I've never really understood the process by which it occurs, but non barrier pipe somehow allows atmospheric oxygen to enter the pipework, causing corrosion in the radiators, which in turn leads to...