12
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 switched off to protect the system compo-
nents.
If the collector temperature drops below the collector protection temperature, the
solar circuit pump is switched on.The function is always activated.
7.3 Additional function
7.3.1 Energy yield measurement
The energy yield of the solar power system is calculated and displayed using the
temperature difference between the collector and the collector return temperature
and the measured flow rate.
Required accessories,
energy yield set
consists of:
Flow sensor
Tube sensor
"Basic Setup" menu
Display
Meaning
Value range Factory set-
ting
Line Value
5
0
Switches on or off the energy yield
measurement function
0 = Off
1 = On
0 = Off
8 System monitoring
If an error occurs, the flashing symbol is generally displayed.
8.1 Sensor monitoring
The connected sensors and sensor cables are monitored for interruptions and
short-circuits. Errors are indicated by the symbol. You can find the error source
by scrolling up or down the Info menu.
8.2 Flow monitoring
The controller is programmed to display a message if the flow is interrupted, e.g.
pump fault or if vapour is in the system. This message, however, does not switch off
the pump.
"Basic Setup" menu
Display
Meaning
+
No circulation in the solar circuit
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.
