The following operating modes are available:

Comfort mode

In Comfort mode (ON), the thermostat displays the room temperature value, available user selection and status of the thermostat. It also maintains the setpoint that can be adjusted via the + and - buttons.

To save energy, the minimum (P09) and maximum (P10) setpoint can be set for limiting the available setpoint range.

Protection mode

In Protection mode, thermostat is turned off and the related heating setpoint is maintained and can be adjusted via control parameters P65.

Economy mode

When Economy mode is selected, the thermostat runs in an energy saving mode and the thermostat maintains the setpoint (P11), thus saving energy. Only one VRF HMI unit can be set as client unit or a client controller is used to select Economy mode.

Timer with delay Off mode

In timer with delay Off mode, the timer starts counting down according to the set hour when parameter P28 is enabled. When the timer expires, the device automatically turns off.


Activation of timer with delay Off mode

When P28=1, press and hold for more than 3 seconds to enter delay Off timer mode.


Setting the timer with delay Off mode

- A preset value (1h) is displayed after entering delay Off timer mode.

- Use + or - to change the time up to 23 hours with a 0.5 h increment or decrement respectively.

- Press () to confirm the change. The device automatically exits delay Off timer mode or press () to return to previous step.

- Or press () to exit delay Off timer mode without saving changes and to return to Normal mode.


Cancellation of timer with delay Off mode

Cancel by setting the timer to 0 hour.


Viewing or editing of timer with delay Off mode

- Press and hold down for more than 3 seconds to view the remaining time.

- Use + or - to change the time and press () to confirm the new value.

- The timer runs according to the new value.

VRF and UFH application switching

Press ( ) 1.5 seconds to switch application between VRF and UFH: VRF -> UFH -> VRF + UFH -> VRF.

FAU application switching

Press ( ) 1.5 seconds to enter or exit FAU.

Operating mode setting upon power failure

If the thermostat is disconnected from AC 230 V and reconnected, the unit returns to the operating mode before powering failure if P27=0. If P27=1, the unit is in OFF mode. If P27=2, the unit resumes Normal mode (ON).