Update - simulated morning sunrise.
Hooked up controller to regulated DC supply, battery was resting 13V, setpoints as in the post #1.
MPPT input 15.2V, battery went into Boost/Bulk, current 11A.
Battery voltage went up instantly to 13.4 and dropped back to 13.1 when disconnected again.
So... boost/bulk starts in the morning just fine, despite battery voltage being already higher than Boost Reconnect. This was the only time when things worked - bear with me.
Simulated "battery full":
Disconnected DC supply, changed Boost Charge, Overvolt Reconnect (I wish I knew what it was) and Charge Limit to 13.4. Battery was charging at 13.4 before disconnecting.
Reconnected DC supply - no charging, laptop reads "Boost, SOC 100%" - as it should, because the battery = 13.4, controller thinks it's Full. In 10 minutes it switched to Float 12.9 as per timer, laptop reading "Float", battery resting at 13.2V, current - zero.
Shut the sun down - lowered DC input to to 13.6 - at this point charging stopped, laptop reads "Solar Cut Out, Not Charging".
Turned the sun On again - MPPT input 13.4, still no charging. Alright, I previously set charging limit 13.4 so controller still thinks it is Full.
Changed charging limit to 14.2 as before, set MPPT input to 13.4, 13.6, 14.0 - no charging. Controller wakes up when input is at least 14.2 and goes into Float, current = 0.
Upped MPPT input to 15.2V as at the beginning of the experiment - still Float, zero current. What changed? Battery resting voltage is almost the same as it was at the beginning - 13.2 vs 13.0, Charge Limit = 14.2. I need Boost now, not Float.
Other findings:
Can't set Boost Reconnect to zero, software response: "BR not in the allowed range".
Can't set BR to 11 or 12, software response: "Low Voltage Reconnect must be smaller than BR". (I wish I knew what the Low Voltage Reconnect was).
Can't set Boost timer to less 10 minutes.
What do you think, should I throw this controller out of the window?
