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I have recently bought a house that has three outside lights professionally wired with armoured cable buried in the ground. The lights are wired in series i.e. from the mains switch the cable runs to Light 1, then from Light 1 to Light 2 and from Light 2 to Light 3. I would like to add one...

This question is associated with my earlier one about a Grant Combi 90 that keeps losing pressure but I have posted it as a new subject as I hope it may provoke responses from others... In an attempt to cure persistent loss of pressure in a Grant Combi 90 I replaced the pressure relief valve...

I have a Grant 90 boiler that should be at 1 bar pressure when cold but it keeps losing pressure to zero bar. I have replaced the pressure vessel and the pressure relief valve but it still keeps losing pressure however this doesn't cause it to malfunction or cut out except that the domestic...

Descaling begins to sound like a bridge too far. Will consider repacing the heat exchanger. Thanks to all contributors Snowsride

Boilerbeasty Thanks - will consider all options. Snowsride

Do I have to remove the heat exchanger on a combi boiler to descale it and if so how? If I don't have to remove it how do I get the descale liquid into the system? Thanks Mike Collard

Thanks to everyone who has replied - will follow up al suggestions. Regards Mike C

I have recently bought a property with a Grant 90 combi boiler which heated the rads OK but not the hot water. The previous owner of the house paid for a plumber to make some repairs which included replacing the diaphragm in the boiler and a couple of other things, including fitting a new...