User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 8 Addendum 08.02.2007
Error code central unit Error code device
122 Flow alarm heating circuit 2
123 Flow alarm DHW
171 Alarm contact
180 Connection to heat meter interrupted
For other errors, refer to the device descrip-
tion of the relevant controller
8.7.10 District heating controller SIGMAGYR
®
RVP97
The RVP97 district heating controller does not display general errors. Sensor errors are
assigned directly to the relevant sensor values. Error codes are made available via the
ACT97 tool.
Error code central unit Error code ACT97
34 Communication breakdown
M-bus
--- No error on the device
62 External alarm 0 Controller fault
65 Communication fault 9 Error load management telegram
66 Continuous control deviation
2 Flow temperature heating circuit too high
3 DHW temperature too high
4 Return temperature heating circuit too
high
5 Return temperature DHW too high
6 Differential heating circuit too great
7 Differential DHW too great
8 Pulse exceeded
71 Alarm input 1 1 Common contact
8.7.11 Third-party devices (devices unknown to the OZW10)
For evaluation of errors from other devices (devices the central unit does not know), the
M-bus status byte is evaluated. Coding of the M-bus status byte must be taken from the
relevant device description.
Error code central unit M-bus status byte (x=don’t care)
02 Undervoltage xxxx01xxb See device description
09 Device-specific error gggx00xxb See device description
(ggg000)
34 Communication breakdown M-bus --- Current error of device not
available
40 Severe error 000x10xxb See device description
42 Severe error, undervoltage xxxx11xxb See device description
49 Severe error, device-specific error gggx10xxb See device description
(ggg000)
8.7.12 Siemeca™ AMR devices
The WTX16 or WTT16 radio nodes map the errors of the meters on common error
messages. Depending on the type of meter, the errors can have different causes and
displays.