"John" wrote in message
...


I can't recall if this boiler has an overheat thermostat which requires
manually resetting. If it has find it and test it for being open circuit.
The basic unit does not come with a overheat thermostat. Potterton sell an
add on overheat thermostat kit for sealed systems.

BTW my Potterton Neataheat 16/22 packed up on Boxing day, similar symptoms
except that the fan started then nothing.
Removed control PCB and found a couple of blown tracks. Soldered wire links
across break, no probs since.

Toby