Siemens Building Technologies
74 319 0677 0 a
G2720xx
07.04.2009
13 / 98
Operation and display
QAW912 control elements
See Figure
29
on page 5
In normal operation
1
Mode button: Change the operating mode (all zones).
Switches within the timer function (Comfort/Economy).
2
Timer/Prog button: Activate the timer function. Set the duration
during timer function. Change to programming mode (press for
longer than 0.4 seconds).
3
Rotary knob: Select the information page.
Set the duration during the timer function.
F
Function button: Change to commissioning mode.
In programming mode
1
Mode button: Exit the programming mode.
2
Timer/Prog button: Enter selected operating line for value
adjustment or return to operating line selection.
3
Rotary knob: Select an operating line or adjust values.
In commissioning mode
1
Mode button: Exit the commissioning mode.
2
Timer/Prog button: Enter selected operating line for value
adjustment or return to operating line selection.
3
Rotary knob: Select an operating line or adjust values.
F
Function button: Delete device from device list, reset device to
factory settings.
QAW912 display
See Figure
30
on page 5
All symbols and their positions can be seen in the full display. The
symbols have the following meanings.
Symbol
Brief description
Zone 1
Zone 2
AUTO
Automatic operating mode: The current heating levels are controlled by the
timer program for the corresponding zone.
MAN
Manual operating mode: The heating levels are controlled by the settings on
the room unit.
Timer function active. Also displayed during setting of the timer function.
Heating to the Comfort setpoint value.
Heating to the Economy setpoint value.
Protection mode.
Optimized activation time function active.
Optimized deactivation time function active.
Holiday function active.
Heating request on (only with a connected RRV912 or KRF960).
Day
Weekday: 1 = Monday … 7 = Sunday
Error in the room unit or in an assigned radio device.
The batteries in the room unit or an assigned radio device will soon be empty
and must be replaced without delay.
Device binding/radio connection test/radio communication error. This symbol
flashes when binding devices and during an active radio connection test.
Prog
Line selection (1..70); this symbol flashes during the line selection.
Line number (1..70), weekday (1..7) or device number (d1..d7).
Set
Adjustable value. This symbol flashes when setting the value.
Actual
Non-adjustable value.
Value display or value adjustment.
Commissioning mode.
Timer program in steps of one hour.
SSA955 control and display elements
See Figure
31
on page 5
F
Function button: Bind SSA995 to QAW912, battery test, con-
nection test, reset device to factory settings.
LED
Display function: See detailed descriptions for the corre-
sponding control steps.
Control in normal operation
See Figures
32
to
35
on pages 5 - 6
Operating mode selection
32
The operating mode can be set with mode button
1
. The
selected operating mode applies to both zones. Operating modes
"Auto", "Manual Comfort", "Manual Eco" and "Manual Protection"
are available for selection.
Timer function
33
Press briefly the Timer/Prog button
2
to activate the timer
function. Each time the Timer/Prog button is pressed or with every
step the rotary knob
3
is turned, the timer value is extended by
30 minutes (a duration from 00:30 to 96:00 [h:m] can be set).
34
Mode button
1
can be used to switch between functions
"Comfort timer" (Comfort level during the timer period) and
"Absent timer" (lower heating level during the timer period).
Each timer setting takes effect after 4 seconds (timeout).
The timer function applies to both zones. The timer can be
set and activated in any operating mode (AUTO/MAN).
If the Timer/Prog button is briefly pressed while the timer function
is active, the timer’s remaining time is displayed.
The timer function can be cancelled by pressing the mode button
or by resetting the timer duration to 00:00.
Information pages
35
Rotary knob
3
can be used to scroll the information pages.
The number and type of information pages vary according to de-
vice configuration (number of zones) and operating status (e.g.,
holidays).
Error messages
Errors are displayed on a separate information page that appears
immediately upon occurrence of an error.
Error text
Symbol Description
Battery capacity low for QAW912 or SSA955 (
l
ow
bat
tery).
Radio communication error (
no co
mmunication).
Invalid time (
cloc
k).
Calibration error for SSA955 (
cali
bration).
No lead controller bound (
no l
ead
c
ontroller), configuration error.
Room temperature sensor defective for QAW912 or SSA955
(
sens
or).
Troubleshooting
In the case of
L.bAt
, the display shows which of the devices has
low battery levels (d1..d7). Replace the batteries in the relevant
device (see "Maintenance/service") and then run the radio con-
nection test (56).
For
no.CO
, the display shows which of the devices caused the
error (d1..d7). Check the battery capacity of the device and run
the radio connection test (56). Devices that have lost their con-
nection are again synchronized with the QAW912.
In the case of
CLOC
the time must be set (3-5).
For
CALI
errors, check if the corresponding control actuator is
correctly positioned on the valve and if the valve can be operated.
The actuator recalibrates itself after the batteries are removed and
reinserted.
If
no.LC
is displayed, an SSA955 control actuator must be bound
to the displayed zone (see "Commissioning").
In the case of a
SEnS
error, the device with the defective tem-
perature sensor must be replaced.
