Saunier Duval F28 E overheat thermostat reset

[rutherford]

Here's a pic of the thermostat.

To reset it after overheating, is it just a matter of pressing in the wee knob that's inside the hole in the rubber? Can't see any other signs of an obvious reset button:

 

[bobw1956]

Thats not the overheat safety stat,you will find that on the heating flow pipe just below the burner

 

[rutherford]

Are you sure - the diagram in the manual seems to make it pretty clear that's where it should be?

And is that not the heating flow pipe??

 

[bobw1956]

Sorry I must be thinking it,s the condencing model