If you have to execute repairs to your Diamo Velux then it is usually a great idea to have a Workshop Manual for reference in case you want to know easy methods to strip off a particular component for example the Door and install it again in the correct way.
Diamo Velux Workshop Manuals are able to offer precise diagnostic wisdom for the car so if something is playing up it will help you discover what the issue is and tips to resolve it. You can then decide if this can be achieved by yourself or in case the job is too big you can still make a booking for your Velux into a trusted car garage.
Diamo Velux manual