Think our ageing Ocean FF combi (sorry, can't see any identifying model mark
other than this and the serial no. on or in the casework) is telling us that
it needs some care and attention, or that we ought to speed up our
replacement plans....

For a couple of days I had noticed that the hot tap needed to be turned
further and further on before the boiler would fire into action. Yesterday
morning it decided that no amount of flow was going to wake it up.

The boiler has a selector switch for DHW only or Heating and DHW. I turned
this to DHW only and then back to the DHW + Heating setting, and all was
fine again - boiler sparks into action immediately now when the hot tap is
opened (it's mounted on the kitchen wall, about 1m pipe run from the hot
tap).

However, the heating refuses to fire up at all now. All thermostats checked
and set to max for the moment - they are definitely both past the "heating
on" clicks.

The pump is slightly warm to the touch, and I have tried the normal
percussive attack on it and twisting the spindle doesnt seem to make any
difference.

Any hints on where to start with diagnosis/fix?


--
Richard Sampson

email me at
richard at olifant d-ot co do-t uk