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Although my central heating system is very quiet in operation, when the system switches to heat the hot water cylinder it makes quite a racket. It sounds as if there is air circulating through the pump with all the knocking and groaning noises that is coming from it! The cylinder does get hot...

Think we may be on to something here. Will do some checks tomorrow morning and will let you know. Thanks for your help, Gents. C8

Hi. room 'stat is mechanical click type. Question... does the 3 port valve send a "signal" to the rest of the system that allows the boiler/pump to run? Cheers. C8 Cheers C8

The problem is intermittent and may only happen one day in four or maybe three times a day. Essentially, what happens is the system will not run although the room 'stat is calling for heat and the controller is on. The problem seems to occur when the room 'stat reaches is selected temp, cuts...

Thanks for your advice. I've cleared out the debris at the bottom of the down pipe (about 12" of crud) and discovered a small metal grille. Once I'd cleared away the muck from the holes in the grille I could see water underneath. No problem now, as I've had a hose running through the system for...

The gutter down pipe at the front of our house discharges into a small brick lined hole that overflows with heavy rain. I guess that this is a soakaway into the ground as there are no access points that would allow the rain to run into the nearby sewer manhole. The hole is heavily blocked with...

Thanks for your help. C8

We've just moved into a 1930 built property with a rear extension. The recently built rear extension has a slate roof that has sarking felt, but at the front the pitch has the original unlined slates. The roof is in good condition (according to our survey) but the front, unlined section of the...