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The unit is controlled by an electronic board located in the upper part .
To access it, use the same procedure described for connection of the parts of the solar system .
There are two different types of boards, depending on the unit version (Basic or SOL) .
To access it for any inspections, refer to the wiring diagrams supplied with the unit .
The figures below show the layouts of the two available versions:
Basic Version
ELECTRONIC BOARD
INSTALLATION