Explanation Of The Control Keys - Atag A200SOV Instructions For Use And Installation

9.1 Explanation of the control keys

i
+
i
-
R
i
+
i
-
R
i
+
i
- -
R
i
+
i
-
R
22
Hot water
Not applicable
+
-
Central heating
Setting the CH water temperature:
Briefly press + or - ; the display will show the flashing preset value;
+
Briefly press + or – to change the set value. Each change becomes active directly.
CH program OFF: Press – until the lowest value is reached and then press – again. The
-
display is showing – and the upper
Switching on works in reverse order.
Information(i)-key
Requesting current data:
Briefly press the i-button (or the scroll key) in order to obtain the following value:
OK
A0 =
+
A1 =
A2 =
A4 =
ESC
A5 =
A6 =
A9 =
To return to the standard view press ESC.
Reset key
+
The reset key allows the boiler to restart if a malfunction has occurred.
In case of a failure the
-
In other cases the Reset button does not function and will not respond to operation.
See 13 for a brief overview of codes.
Some keys have ancillary functions. These ancillary functions are activated only if,
according to the procedure described in Section 10.3, settings need to be changed or
data retrieved from the CMS.
Ancillary functions:
DHW KEY: Scroll function
('scrolling' through parameters)
is off.
Supply water temperature
Return water temperature
Hot water temperature (n.a.)
Flue gas temperature (only if a flue gas sensor is connected)
Outside temperature (n.a.)
Water pressure
Rpms of fan
symbol is displayed with a Cx xx code.
CH key: OK and ESC function
(OK= confirm, ESC= back to standard display)
OK
ESC