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HE 5750 Operating Instructions
#371627 Version 1.1
11 Alarm and error messages
11.1 System start
The Master controller tries to establish a valid CAN communication with the node (CAN
controller HE 5724 and HE5910 damper control and Extra-I/O) acc. to the system parameters.
Error Message
Criterion
Error cause
Bus error (inverted node
number)
Communication with node
failed
-CAN wire interrupted or not
connected.
-HE5724 no voltage.
-HE5910 no voltage.
-HE5724, HE5910 defect.
-fuses triggered.
-CAN wire not terminated.
-wrong node ID set.
-no common baud rate.
-system description does not
correspond to the actual
hardware.
When operated with HE 5750
switch unit:
-CAN wire interrupted when HE
5750 Master controller is
started.
-Master controller in Standby.
Errors at the start of CAN
communication are
displayed
inversely
.