After power-up, the thermostat resets and all LCD segments light up for about 3 seconds. Afterwards, the room temperature is displayed (factory setting).
Surge protection at power-up
When the thermostat is started up, the LCD display and key buttons work normally except all valve outputs, e.g., Q12, Q14.
The thermostat outputs start up at random to protect mains against overload. It may take a while before all outputs work properly.
Sensor calibration
The thermostat is equipped with an internal sensor for accurate temperature display. If the temperature display is influenced by its mounting location, calibrate the sensor via parameter P05 to adjust the readings.
Setpoint and range limitation
For comfort and to save energy, we suggest reviewing the setpoints (P11, P12, P65 and P66) and setpoint range (parameters P09 and P10) and change them as needed.
Other control parameters
The thermostat's control parameters can be adjusted to ensure optimum performance of the entire system (see “Control parameters”).