SOMFY LS40 Manual page 13

Why can't standard Somfy motors be wired in parallel?
Somfy operators are fitted with a single phase asynchronous motor type,
which means that there is a capacitor between the two directional windings.
When operators are wired in parallel, all directional wires are interconnected
through the capacitors (shown in light red below), this produces interference
between directions.
Example of parallel wiring
Capacitor
Capacitor
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