Temperature control

The thermostat acquires the room temperature via its built-in sensor and maintains the setpoint by delivering 2-position valve control commands.

The switching differential is 1 K in both heating and cooling modes.

  • If an external temperature sensor is connected and configured, the temperature detected by the external sensor is used for display and temperature control.
  • If a bus temperature is configured (P06), the temperature from the bus is used for display and temperature control.

Setpoint adjustment and limitations

The Comfort setpoint can be adjusted via the +/- button. For comfort and to save energy, limit the setpoint range between the minimum (P09) and maximum (P10) values.

Multi-functional input

Freely selectable, multi-functional input (P30) for:

  • External room temperature or return air temperature sensor: Sensor input for external room temperature sensor or return air temperature sensor to acquire the current room temperature. (NTC 3k)
  • Operating mode changeover contact: The hotel keycard input changes the operating mode to Economy with HMI locked when the room is unoccupied and returns to the previous operating mode when the room is occupied. (keycard)

Keylock and unlock

Keylock can be activated or deactivated via parameter P14. See “Control parameters” for details.

If the screen is locked, press and hold down for 3 seconds to unlock the screen. The thermostat remains unlocked (P14 is reset to "0") afterwards.