Siemens RVS41.813 - Error History; Error List; Error Message Functions

This function should not be used in normal operation.
Error message functions
This function can be used for maintaining the required flow temperature.
If the flow temperature deviates constantly from the required level for more than the
period of time set, an error message will be delivered. If, during an active alarm, the
setpoint is maintained again, the error message will be canceled.
An alarm message can be issued if the DHW storage tank cannot be charged during
DHW charging within a parameterized time as a minimum to the switching difference.
Line no. Operating line
6740 Flow temp 1 alarm
6741 Flow temp 2 alarm
6745 DHW charging alarm
6746 Flow temp cooling 1 alarm
Error code 121: Flow temperature heating circuit 1 is too low (par.6740)
Error code 122: Flow temperature heating circuit 2 is too low (par.6741)
Error code 126: DHW charging supervision (par. 6745)
Error code 357: Flow temperature cooling circuit is achieved (Par 6746)
The flow temperature is regarded as having been complied with if the deviation from
the setpoint is less than 1°K. If the flow temperature setpoint is reduced by more than
4K, the monitoring function will be deactivated until the flow temperature has dropped
to the new setpoint.
The function is also passive if the heating circuit pump is off due to an ECO function or
quick setback.
Error history
Line no. Operating line
6800…68
19
History and error code 1 - 10
The controller saves the last 10 errors in nonvolative memory. Any additional entry
deletes the oldest entry in the memory.
For each error entry, error code and time of occurrence are saved.
The ACS 70
0 PC tool can be used to display the relevant actual values, setpoints and
relay outputs for each error.
Error list
The error text in the following table corresponds to the clear-text on the display of the
operator unit.
E
rror text
Sensors or co
ntacts in connection with error messages.
Lo-cation
The errors are reset either manually or automatically, depending on the type of error
(refer to the following table with the error messages).
Reset
Manual reset
In the case of error displays on the info level where "Reset?" appears, the error can be
manually reset.
202/258
Siemens Switzerland Ltd User manual RVS61.843, RVS41.813 CE1U2355en_02
HVAC Products 6 The settings in detail 28. September 2009