Hi. You are right to do this yourself, it is very simple. There are 2 screws underneath the unit that will allow you to easily remove the unit. Be sure to switch off at the mains first or you may blow a fuse like I did!
WOW! I moved into a new property 7 weeks ago. Last Friday my 207XL did exactly the same. The noise and the controller stopped after about 10 seconds although but the controller appears to be dead. I called the Sunvic technical helpline on Monday morning who were very good but said that the...