This is the instruction to change the setting on your MK1 (Honeywell) Ventis Controller.
- Press the bottom button (Override) to wake up the controller and hold it in
- the screen will change to
- Heat fan (%)
- Cool fan (%)
- Filter use (Running hours)
- Roof Fan (on or off)
- Press the arrow up or down button to adjust the different modes
With the MK1 Controller if you don't press the next button within 5 sec it will go back to the main menu and to sleep.
Should you have further queries please reply to this email and let us know how we may assist you further.