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6.3.7 Temperature sensor
The room thermostat attachment has a built-in temperature sensor which is used to measure
the room temperature.
In combination with a room thermostat insert, an external sensor can be connected, which is
used either to measure the room temperature or to limit the maximum floor temperature.
The following settings are possible:
The room temperature is measured by the internal temperature sensor.
The room temperature is measured by the external temperature sensor.
The internal temperature sensor is deactivated.
and
The room temperature is measured by the internal temperature sensor and the
floor temperature by the external sensor to monitor the floor temperature. If the
maximum floor temperature is exceeded, the underfloor heating is switched off
until the floor temperature falls below the maximum temperature again. This
prevents an unpleasantly hot floor.
6.3.8 Behaviour after power failure
If a power failure occurs, the behaviour of the attachment depends on whether the power failure
is longer or shorter than the power reserve.
Power failure shorter than the power reserve
− All data and settings are retained.
Power failure longer than the power reserve
− The date and time are reset and must be set again.
− The temperature control is performed as before the power failure.
− All times of the week timer switch are retained.
− All settings are retained.
148 TEMPERATURE CONTROL