Automatic switch back from manual to auto operation after programmable time

The duration of the extended day/ night operation can be limited by SYS-01/ SYS-02. SYS-01 determines the extension period of the day switch command and SYS-02 determines the extension period of the night switch command.

When the operation mode is set to ‘ON’ via the bypass button of the wall module, the manual switch condition output is set to ‘ON’ (if the fan switch is not set to ‘OFF’), indicating the extended day operation and the extend day timer is started. When the extended day timer exceeds the value of SYS-01, the manual switch condition output is set back to auto. Another push to the bypass button during the extended day operation or the fan switch position ‘OFF’ will set the operation mode to ‘OFF’.

When the operation mode is set to ‘OFF’ via the bypass button of the wall module, the manual switch condition output is set to ‘OFF’, indicating the extended night operation and the extend night timer is started. When the extended night timer exceeds the value of SYS-02, the manual switch condition output is set back to auto. Another push to the bypass button during the extended night operation will set the ‘AUTO’ operation mode.


Note: To disable the automatic switch back from manual day operation to automatic operation set the SYS-01 to 0. To disable the automatic switch back from manual night operation to automatic operation set the SYS-02 to 0.


Description

Default value

SYS-01: max. extended day operation

120 min

SYS-02: max. extended night operation

120 min