I have a SmartSolar MPPT 100/30 which I am attempting to control remotely using the relay on a BMV 702.
In the online manual Item 5.2.5 states the following;
This is the default setting. This functionality will switch the solar charger on or off via the RX pin.
- RX pin to GND will switch the solar charger off.
- RX pin floating or to battery positive will switch the solar charger on.
However this does not appear to work, when I short Gnd-Rx nothing happens?