We've a Worcester 28cdi boiler which is 7rs old. It's been no bother at all
since its installation however it is now running intermittantly when in DHW
mode. All works ok upon demand for hot water, the boiler then runs for
approx 2 minutes before shutting down for 12/15 seconds, fires up and runs
for about 1 minute , shutdown sequence repeats.
It runs continuously in CH mode.
Water pressure and volume are ok......could it be as simple as a blockage in
the hot water filter.......any suggestions.
Thanks all.......not been in here for a
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Suggest you check the operation of the diverter valve.
This diverts boiler water through a DHW heat exchanger when hot water is
drawn off (in preference to central heating). If yours has a diaphragm to
detect water flow and redirect boiler (CH) water, the diaphragm has probably
failed. You may have a noisey operation when drawing hot water, due to
boiler water escaping through the diaphragm. Easiest to change the whole
part but you may be able to take it apart and replace just the diaphragm (if
this is what's wrong with yours).
When it comes to changing your boiler, avoid WB unless you're happy with
poor customer service.
"Eric Hall" <triATthlonDOTfreeserveDOTcoDOTuk> wrote in message
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