My thanks to all for helpful comments.

Updates:

1)Triac Gate disconnected as suggested by Jamie and No heat, so confirms Triac OK.

2)No S/C between heating element and earth/common. Now looking upstream from Triac.

3)I have checked the temp sensor in Iron (wand) and it's O/C ALL of the time. So, have substituted a low value Pot and can now create a variation in readout on Station display now, but still the element is ON all the time (red hot tip etc!)


Richard