Zehnder Rittling Bisque 4FE-40-106/F, Fitting Instructions Manual

12

13

Z23720

Z23720

lost. After the 230Vac power supply comes back, if chrono mode is selected, the sym-

bol     and the display writing flickers (the time): in that case following the procedure 

described at the beginning of the paragraph it is possible to set the time. Until the 

operation is not performed, the device temporarily counts the time from the moment 

when the power supply 230Vac has become available again (and this «temporary» 

time is used in case you selected the chrono mode).

3.4 Pilote wire mode

In the Pilote Wire mode, the setpoint temperature (set locally into the Comfort 

mode) is modified depending on the commands received from the Pilot Wire control 

unit, except the case with Pilot wire not connected or class I devices (appliances with 

eath connection). 

The device recognizes 6 commands: Comfort, Reduction (setpoint temperature 

-3.5°C), Stop, Frost protection (7°C), Eco1 (setpoint temperature -1°C) and Eco2 (set-

point temperature -2°C).

Pilote Wire 

icon

Symbol of FP command 

recognized (see table)

Setpoint temperature

Pilote-Wire signal

Display

Temperature

  COMFORT

   Setpoint temperature 

  REDUCTION

  (Setpoint temperature – 3,5°)

  ECO1

  (Setpoint temperature - 1°C)

  ECO2

  (Setpoint temperature – 2°C)

  FROST PROTECTION    

  7°C

  STOP

  Stop

The STOP command is enabled in all modes, except for the standby state. 

If the STOP command was implemented outside of the mode Pilote Wire, the 

icon       blinks.

With the STOP command present is still possible to put the device in stand-by 

state pushing the ON/Stand-by button     .

3.5 Electronic lock

This function is used to block the buttons so that they cannot be used. It may be 

useful to activate it to avoid inadvertent setting changes or tampering by unauthorized 

persons or children. To activate, hold down the 

+

 and 

–

 buttons simultaneously for at 

least 3 seconds. A padlock icon      appears when the buttons are blocked.

With the loocking function active is still possible to put the device in stand-by 

state or in ON state pushing the ON/Stand-by button      , but it is not possible to change 

setting or mode.

To deactivate the function, hold down the 

+

 and 

–

 buttons simultaneously for 

at least 3 seconds. The padlock icon will disappear and the buttons can be used 

normally.