Check the installation is ventilated
It is necessary to ensure that your oven has adequate ventilation spaces in the housing, or that any vent spaces are not blocked or covered over . If the oven is not properly ventilated then the outside may get hot and the kitchen units may potentially become scorched and burnt. Please refer to your installation guide which may be found in your instruction book, a copy of which can be downloaded from the website. Check that the housing is ventilated in accordance with the installation instructions.
Always disconnect your appliance from the mains before you start examining it!