I have a Potterton Profile 50e boiler, and lately the (thermal?) cut-out has started tripping. This results in the pump going continuously, but no hot water. It happily resets manually, and starts up again. It seems to trip 4/5 times a week, at different times/conditions - no obvious pattern.
Any ideas?
Obviously I am not going to take the boiler apart (unqualified), but if the cause is elsewhere in the system, I beleive I could fix it.
Neal