very imformative I must say.
Can I ask how any of these checks can be done if some of the buttons aren't working? (or should I say works after pressing 50 times in different angles)
I have that problem and my AUTO, REST and Recycle Internal Air buttons are all like that!!!!
I suspect its a bad button sensor. Any advise?? If I can't get AUTO and REST, I can't do any of the checks mentioned.
Any help appreciated and well done on the web!!