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21Operating manual for the auroMATIC 620 0020094404_00 Controller
5.2 Checking the system status
You can check the system status in the graphic repre-
sentations.
Fig. 5.1 Graphic display: System status
The system status display is the standard display on the
controller and is thus the first display in the operating
sequence. When it is displayed, you can only turn the
left
knob to the right.
After an extended period where no operation takes
place, the controller always goes back to this display.
or
Turn the left knob
all the way to the left.
The dispaly shows the system status.
>
The symbols have the following meanings:
Current temperature at the cylinder
probe
On systems with two collector arrays,
the highest temperature is shown.
When the solar circuit protection func-
tion is active, the temperature dis-
played, "> xxx°C", flashes.
In combination with a solar pump unit
VPM S and VMS, the temperature
value of the solar pump unit is adop-
ted. The solar pump unit can only
determine the temperature if the solar
unit pump is running. When the solar
circuit protection function is active,
the temperature displayed,
"> 150 xxx°C", flashes. If there is no
solar gain, 20 °C is displayed.
Current gain performance
Indicates the instantaneous intensity
of the solar gain.
No bars black = low gain
All bars black = high gain
Solar gain
The cylinder symbol indicates the tem-
perature at which the solar cylinder is
currently being charged and how much
solar gain is still possible up to the
maximum temperature.
Burner
Arrow flashing: The solar cylinder is
currently being charged by the boiler.
Heating circuit
Arrow flashing: The temperature in
the solar cylinder (probe TD1) is high
enough to support the heating system
(only in systems for solar heating
support).
Operation 5
23


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