SCC low amps

Back again with more noob questions.
Today I noticed my SCC is not outputting a lot of amps, max about 0.6A. I have one 100W on it and i have tested and it is outputting @ 21V. However, the SCC shows about 14V. I have an attached screen shot but I have seriously loaded the battery and it drop to ~ 12.3 (not in this screen shot) but still the SCC stays at ~0.5A. Its an EPEVER Tracer 30A.
I have confirmed polarity and wires correctly attached etc. Is this normal, shouldn't the amps increase with load?

At least with the Victron charge controller, the voltage from the panel has to exceed the battery voltage by 5 volts to start charging, then by 1 volt to continue charging. Maybe the EPEVER is the same?

oh, that might make sense <runs to check the manual.....>
Although, would that explain why my multimeter reads 21V straight off the panel but on 14V at the SCC?

Which side of the charge controller? If you see 21v on the wires coming from the panels then your charge controller should have reached the threshold to start charging. The usual explanation for "no charge" is that the batteries are fully charged. But you said the batteries were drawn down.

I see 21v on the wires coming from the panels but the SCC is displaying 14V. Yes, on full load I can get the battery at or below 12.3. In my ignorance I thought this would be enough to make the SCC up the current to compensate

Does anyone know what "Anti-reverse MOSFET is short" means? I queried the SCC via the RS485 controller and this returned?