User Manual | Temperature Controller Display HIB123 Part-No.: 3756766 Doc.-Version: I
3. ERROR CODES
Once an error (warning or alarm) is present, the error code is displayed automatically.
The following tables give you a complete overview over all error messages. Please note that not all
error codes are displayed because the technical requirements therefore are maybe missing.
Before acknowledging an error code, at first take listed actions. Additionally check possible causes
and fix them if necessary.
a) Warnings
Warnings are self-acknowledging, that means, a manual reset using the RESET button is not
required. When a warning appears, all electrical components (actuators) will remain in operation. If a
warning is present, it is signalled via the collective output “warning” (pre-interlock via potential-free
relay).
The following warnings have a different functionality:
U33, U34, U35, U40, U41, U42
- The signaling of these messages via the alarm interlock or the MFO Interlock (depending on the parameter).
U33
- All actuators are switched off during the venting process.
- A restart (RESET) of the installation is automatic. A manual RESET is not possible.
- This warning is automatically reset (after a waiting time of max. 300 seconds).
U34, U35
- All actuators remain in operation.
- No manual reset possible.
- This warning is automatically reset (when the temperature is within the valid range again).
U40, U41, U42
- The pump remains switched on. All other actuators switch off.
- This warning must be acknowledged with the reset button.
b) Alarms / Errors
An alarm must be reset manually using the RESET button if the fault is no longer present. When an
alarm appears, all electrical components (actuators) will turn off automatically. If an alarm is present, it
is signalled via the collective output “alarm” (interlock via potential-free relay).
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