In article ,
IMM wrote:
I had a Potterton Neatheat regular boiler for over 20 years. The boiler
was very reliable in itself because there was not much in it. In that
time I went through:

Outside the boiler: 3 pumps, a zone valve, a zone valve motor, a
cylinder, cylinder stat, room stat and a programmer.

Wonder why you installed a quality boiler with ****e peripherals?

--
*What was the best thing before sliced bread?

Dave Plowman London SW 12
RIP Acorn