What you will get here is an honest opinion of the Italian owned, Polish made appliance.
When you say the light under the start/pause button do you mean the Salt indicator light which is directly under the Start button, or do you mean one of the three lights just to the left of the salt button.
If you do and the green END light is flashing then you have a thermistor ( temp sensor) problem.
It could be a faulty thermistor, loose or broken wiring ( very cheap, thin wiring in the door harness in particular ) or a fault in the main PCB. The thermistor appears to be hard wired into the pcb.
That which can be asserted without evidence, can be dismissed without evidence.