Chosen Solution
Ventilation is going into boost modus and going back to standard, making lots of noise. I don’t seem to be able to get in the menu, display shows a half bar.
Hi, It sounds like the logic board has failed. The spinning up could be the humidity sensor or it could be the faulty logic boards. Some systems have a wired controller if this is the issue then you can check the screen on the unit itself. In this case a new remote controller can be added. It would be interesting to know what the issue was as I appreciate you asked this question a while ago. Hope this helps, Tom.
