Triton T70i Shower?

Hi
I have a Triton T70i shower that seems to have died?
There is power to the shower and when I check all the microswitches they function correctly, even to the extent when power is applied 240volts will track through them, when I read the thermo stat on top of what I believe is the pump this for me seems to be the problem but before I order one can someone let me know if on the right tracks? Or if know what the problem might be?
Thanks