Very common fault on this Indesit machine, no heat fault.
It will be either the heater or the PCB 99{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the time. the heating element needs checking for resistance, continuity and insulation, if that is OK then it will be the PCB. 🙁
Be sure to remove the mains plug if you intend to go inside. 😉