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Interesting piece of information - thanks. See other reply - the problem may have been fixed - or not :? Thanks anyway

Yoy may have put me on the right track. I tested the output at the junction box, having disconnected the cable so there seemed to be no other source. However, to be sure and acting on your advice, I opened the boiler, loosened the programmer and removed the spade connection for HW-off - it was...

Alpha24R boiler +Honeywell Y plan. I have had problems with CH OK but no hot water. After much investigation (including replacing the cylinder stat - unnecessary) I seem to have found that the fault is the programmer. With both heat and HT calling, the programmer is live on both HW-on and...

None of these, I've checked. What is clear is that there is moisture at the base of the wall in question. It is obviously ground water, possibly aggravated by the fact that the kitchen floor is quarry tiled over a membrane so it is possible that water is migrating to the edges. I am more...

I would take more notice of this if you suggested an alternative. The certification tests run by statutary bodies such as the BBA are transparent and very clearly state what a product can and cannot do. As I said, it was built in 1887 so the answer is obviously no. :roll: I didn't say that...

I have a Victorian house (1887) which had an Injected DPC when we bought it 28 years ago. One corner of the kitchen (basement) is damp over a metre from the floor. Next door's yard is about 25 cm higher than ours which possibly why the damp is so high. I need to inject an impermeable barier -...

I have just had a new Alpha CD24R boiler fitted (by a COTGI fitter) but his electrician made a complete hash of the wiring - twice. I am waiting for another sparky to come but after my previous experience I'd like to know what the wiring should be. The boiler is to be wired in to an existing...