How can i fix my bosch exxcel 1400s washing machine?

the washing machine isnt heating at all. All washes are running on cold. i have tried all heat cycles and all are running cold. The damp clothes at the end are stone cold when removed from the drum. The clothes seem to be clean after drying but i do like to run some items at a high temperature wash.

Is this an easy fix or is it a sign of a new washing machine on the horizon.