This is weird.
Last week the printer was working fine and has always been reliable. Selecting a model to print always used to preheat nozzle and bed and then it start to print.
This week the printer powers up, I select the model to print then the printer does nothing. Neither the nozzle or bed preheat - it just sits there.
If I preheat the nozzle and bed and then select the model to print - it again just sits there.
I can auto home, self level etc. I have reset to default initial config - same result.
Any ideas please?