In message .uk, Ed
Sirett writes
On Sun, 12 Mar 2006 09:02:25 -0800, Graham wrote:

I don't have a circuit for the flame control module, I only have the
user documentation that came with the appliance..The schematic, only
shows the inter connections. I can only assume its the part that the
water demand sensor feeds that's developed the fault .. may be a
'dry joint' on the board as its seems only to happen after long
periods of use ?.... as the hot water function is 100 p/c reliable all
of the main parts of the boiler are functioning normally .. its got be
a electronic fail ..has anyone got the circuit ?

Sorry for the long post .. but that about describes the problem
Any one seen this problem ?

This seems like it's the diverter valve or the servo valve or
diverter valve micro switches.

That's what I said in the first place

--
geoff