ATTENTION! Only qualified persons shall carry out the design, installation and testing of
the solar system functionality!
There are two operating modes – with or without mains supply.
-
Available mains
In this mode, the UPS powers the electronic board and recharges its battery. Mains supplies the
electric heater and the circulating pump. All modes of electronic control function normally.
-
No power supply
In this case there is no power to the electric heater. Only the electronic control board is
powered and it is possible to infer the error the heater is on but there is no temperature
increase in the water heater. In solar mode the electronic control operates properly, but in
combined mode the timers for switching the electric heater on shall not work.
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