Thanks for that. The error code you have flashing here is F08 error code.
F08 error code indicates the heater relay is stuck.
This is on the main control board and if everything else checks out ok, it's likely to be the board at fault.
Unplug the appliance and take the top and rear covers off.
At the rear, check the wiring to the heater, give the wires a good tug as they can break internally.
Test the heater with a multimeter to see if it's failed. It should read around 25 ohms.
Also test the heater to earth as well as if the heater is failing to earth it can also cause the F08 code.
Check the wiring at the main control board.
This is located bottom left when viewed from the rear.
Take it out and one plug at a time, unplug them, ensure they are clean, dry and tight fitting.
Check the board for obvious damage too.
Refit the board.
At the top, locate the pressure switch, give it a couple of taps with your screwdriver handle.
Take the thin tube off of it and then refit it.
Try the machine again.
If still the same and everything else checked out ok, you'll need to replace the electronics.
The most cost effective way to do this is to have indesit come in and repair the appliance on the fixed price, parts and labour, scheme as these boards once replaced will need to be programmed up with there laptop as new boards are sold blank. But the cost for this is about £145 through them so sometimes not worth the repair. But check the heater first and see what you find.
If you need anymore info just get back to me.