If the device does not show an initial text onto its display while turning the switch from off to on position, then please verify whether the device is connected to a power source. The RS232 connection does not supply the device with current.
If the SICO2 does not communicate with TEMES then the following procedure might be helpful:
•Turn SICO2 off
•Bridge pin 2 and pin 3 (= two lower pins) of the connector LOGIC I/O, e. g. with a straightened electrically conducting paper clip
•Turn SICO2 on (the display is invalid due to a blocked communication with the LCD)
•Wait 5 seconds
•Remove the bridge (e. g. remove the paper clip)
•Program the SICO2 with TEMES