Operating Instructions

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Siemens Synco™ living CE1B2740en
Building Technologies Central apartment unit QAX9x3 13.12.2010
--- Holidays or special days have no influence on DHW op-
erating mode.
Normal
DHW is heated to Normal setpoint during holidays and
special days.
Reduced
DHW is heated to Reduced setpoint during holidays and
special days.
Protection
DHW is heated to Protection setpoint during holidays and
special days (guide value).
Time settings
Date/time of day
Enter the settings for the date and time of day using the following paths:
Main menu > Time of day/date > Time of day:
Main menu > Time of day/date > Date:
Main menu > Time of day/date > Year:
Faults
Error/fault status messages
The central apartment unit stores up to 10 current fault status messages ac-
cording to priority. They can be retrieved at any time. The lowest fault status
message number represents the fault with the highest priority. If priorities are
equal, the faults are listed in chronological order.
Both the central apartment unit’s internal faults and the faults of the other de-
vices contained in the system are taken into consideration.
Each device only transmits its most severe fault to the central apart-
ment unit. As soon as that fault has been rectified, the next fault is
transmitted.
The faults acquired are written to the “Current list of faults“.
Main menu > Faults > Faults current > Fault X:
With each fault status message, a fault number and fault text are displayed.
In the QAX913, faults can be connected with internal or external fault
status relay and to status outputs to a certain degree. The correspond-
ing relay closes when the fault appears.
(See page 83).