Malfunction Messages - Rotex Controller Series Product Documentation

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11.4

Malfunction messages

In order to set up a precise diagnosis in the case of malfunction the control system is equipped with an
extensive malfunction message system. An occurring error is always announced in the display of the
corresponding basic control and stored.
There are five different categories of malfunction messages:
1 Sensor alarm messages
Sensor values which are not in their respective measuring range will either be sensor breaks or
sensor short circuits. They appear with an error message according to their use.
2 Boiler alarm messages
These messages depend on the actual switching conditions. They appear with the corresponding
error message, depending on the version and allocation.
3 Logical alarm messages
These messages will react on the actual control result. They appear with the corresponding error
message, depending on the version and allocation.
4 Bus alarm messages
These messages display address problems such as double addresses or not recognizing
addresses within the data bus system. They appear with the corresponding error message,
depending on the version and allocation.
5 Alarm messages from boiler control (high efficiency condensing boilers)
These fault messages come of the boiler control and are divided into permanent faults (permanent
lock) with error code E-XX (MCBA-code) or temporary faults (self cancelling lock) with error code
B-XX (MCBA-code). (MCBA-Code).
The displaying characters and further processing of the logical faults can be enabled or suppressed by a
corresponding parameterization (see SYSTEM level-parameter 13 (logical error message).
Further processing in case of malfunction messages:
• Alarms will be indicated in the basic display of the control unit
• System errors appear in the information level beside the corresponding information
• Malfunction messages are loaded into a malfunction message log (see description below)
• Malfunction messages activate in case of corresponding parameterisation an alarm output for optical or
audible signallers.
• Malfunction messages are transmitted via data bus to corresponding gateways.
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Product documentation THETA NORM/UNIT