"John Rumm" wrote in message
...
On 23/07/2016 21:07, bm wrote:

Any ideas guys?
8 years old prolly knackered?

Temperature control too high? (or flow rate obstructed?)

Fraid not, John.
I think I had this before, just inside warranty. Thermocouple maybe? God
knows which or where.
Looks like dipping into the pocket.