Why does the JOY room control unit show the wrong time after a power failure?

The room control unit JOY is equipped with a real-time clock. This clock provides the real time even after a power failure.


If this power failure occurs shortly after the commissioning, the energy storage of the real time clock has not been charged sufficiently.

If the time has been set once and the JOY room control unit has run for min. 24h, it will be able to bridge about 4 days without power supply and running the real-time clock. After power on it will still display the real time.

Was this article helpful? Yes or No


We are sorry that we couldn’t answer your question. Please help us to

improve our customer service and tell us what you’ve been seeking for.


Contact Support

Similar questions


    Contact us:

    Thermokon Sensortechnik GmbH
    Platanenweg 1
    35756 Mittenaar
    Tel.: +49 2778 6960-0

    Write email

    View contact