What to do if the Vaillant VR 92 display remains dark?
- HHeather GarciaAug 5, 2025
If the Vaillant Control Systems display remains dark, it might be due to a software error. Here's what you can try: 1. Press and hold the button on the top right of the remote control for longer than five seconds to force a restart. 2. Switch off the mains switch on all heat generators for about 1 minute, then switch them back on. 3. If the display is still dark, inform a qualified technician.