The Passiv Programmer may occasionally display 'Waiting for the Hub'. This is part of regular operation, and can often show for a few seconds e.g. after an automatic update. If this screen displays for more than 5 minutes, or shows up frequently enough to disrupt your heating operation, then there could be an issue with communication between the Programmer and Hub.
In some cases, this can be resolved by restarting the Passiv Hub. The Hub is powered by a 3-pin plug, connected from a standard socket the underside of the device. Turn off the socket or unplug the device, and leave it unpowered for 1 minute. Then restore power to the device. Wait a few minutes for the Hub to reconnect with the Programmer, and check to see if the problem persists. If you are still experiencing the issue then this may be due to a wiring fault. In this case we recommend contacting your installer to investigate further.