11. Troubleshooting
Trouble shooting steps:
Start with checking firmware versions (needs to be latest). And when asking questions; report the exact firmware versions that are used.
Check battery type/brand. If lead then it might be unsuitable and probably broken because of the heavy cycling.
If some unknown or unsupported CANbus battery; change the battery to a supported type.
Check the state of the inverter/charger, if its Passthru, then there is an issue. Details are available in Q4 in the previous chapter.
Then; if PV is not used enough to power loads;
Check for the # reason codes; see CODE KEY in this manual.
Check wiring: lots of voltage drop between MPPT and multi will prevent the system from effectively powering AC loads from solar power.
Test with and without SVS enabled: leave it disabled.
Next, check MPPT charge current limit during the time that it is not used enough. MPPT CCL is supposed to be high always; even when battery full. Unless there is a temperature issue.
Now check MPPT Charge Voltage Setpoint. It is supposed to be above actual battery voltage.
Note that those last two set points are determined by software; and calculated based on the setpoints sent by the (CANbus connected) lithium battery: you can't change them manually. Looking at them however does help understanding why certain things are happening;