11
7.2.3 System protection
If the collector temperature exceeds the collector protection temperature (see
7.2.2) by 10K, the solar circuit pump is turned off to protect the system compo-
nents. As soon as the temperature falls below this value the system is started again.
This function comes into effect no matter if the collector protection is activated or
not.
7.2.4 Anti-freeze protection
This function must be activated if the water or glycol mixture can freeze.
If the temperature at the anti-freeze sensor (S1) drops below the set value, the solar
circuit pump is activated and heats the solar circuit using the heat exchanger in the
storage tank.
"Basic Setup" menu
Display
Meaning
Value range Factory set-
ting
Line Value
4
0
Switches on or off the anti-freeze
function
0 = Off
1 = On
0
5
3
Temperature at which the anti-freeze
function is activated
-20°C – +7°C 3°C
8 System monitoring
In the case of an error the flashing symbol is shown.
8.1 Sensor monitoring
The sensors necessary for the control functions and their connecting cables are
monitored to show breaks or short circuits. If a faulty sensor or installation is re-
corded by the software, the symbol is shown . By scrolling up and down you can
quickly find the error source.
8.2 Flow monitoring
The controller checks the flow rate when the pump is switched on. If after 15
minutes no flow is recorded an error message will be shown. The error message is
automatically reset after fault correcting.
This message, however, does not switch off the pump.
"Basic adjustment" Menu
Indication
Meaning
+
A fault with the fluid circulation within the solar
system
Settings and changes in
this menu must only be
carried out by a specialised
technician. Incorrect settings can
damage or adversely affect the
function of the solar power
system.
