Indesit Dishwasher

[Wallofthewolves]

Hi all dishwasher recently stopped working. Its an Indesit it has wash light flashing, salt light red other lights off. It drains as usual then fills up but then beeps 3 times and stops and then beeps once ever 10 seconds. Eventually tries to start again but then same happens. From what Ive read i think may be heating issue but struggling to find much info. Anyone have any ideas ?