Roborock H7 - Which parts of the Cordless Stick Vacuum can be washed and which parts cannot be washed?; The Multi-Surface Brush stops rotating when the vacuum cleaner is stopped and then restarted, but nothing is entangled in it. What should I do?; The vacuum cleaner vibrates slightly when first switched on, but it doesnt start properly. After several attempts, a blockage error is displayed. What should I do?; The screen displays an unfamiliar interface which cannot be exited even by pressing the trigger. What should I do?

10. Q: The vacuum cleaner vibrates slightly when
first switched on, but it doesn't start properly. After
several attempts, a blockage error is displayed.
What should I do?
A: It may be that the temperature of the vacuum cleaner is too low for it to start properly. Please
leave it at room temperature for a while before using it.
11. Q: The screen displays an unfamiliar interface
which cannot be exited even by pressing the
trigger. What should I do?
A: The vacuum cleaner may have mistakenly entered engineering mode. Please press the main
switch to exit. If this fails to work, please leave the vacuum cleaner idle and do not press any
buttons for at least 2 minutes. It will return to normal after this time.