MidNite Classic - Page 57

Classic Manual Rev L
56 | P a g e 1 0 - 0 0 1 - 1 R E V L
Meld” from the 2 fingers needed to push the arrows
Classic will not power
on. No Fans or life on
power up.
 Check for reverse polarity on the battery positive and negative
terminals on the blue terminal block.
 Check for voltage on the battery positive and negative terminals
on the blue terminal block; if less than 10V, charge the battery or
find the bad connection.
Classic MNGP is blank
but the Classic is on
 Check that the blue display cable is plugged into the top jack on
the main circuit board and the display.
 Try the middle jack on the circuit board.
 Try a different 6-conductor phone cable (RJ12).
Classic says “Resting”
but the sun is out
 Resting indicates a lack of power available to the Classic.
 Go to the 3
rd
Status page; reads Voc in lower left corner.
 Verify you have Voc on the display that is at least 133% of the
actual battery voltage at that time.
 Verify the charging mode is correct for the source as well as the
“Mode” is on.
Classic switches
between Resting and
Bulk MPPT repeatedly
but produces 0 watts
 This is normal under low light conditions.
 Watch the input voltage; if it drops down close to battery voltage
and then the Classic goes to Resting, this is usually a sign of a bad
connection. If it is rock solid call Tech Support.
 Try doing a factory restore.
The MNGP shows 0V
IN (or really close) but
shows battery voltage
correctly
 If this is a new install, check for reverse polarity on the PV
positive and negative on the blue terminal block inside the
Classic.
 If the system has been running all along and this just happened,
call Tech Support.
The MNGP is showing
all 0s and/or “Got
Comm?”
 Ensure you did not put a different display on the Classic. The
firmware must match on the Classic and MNGP.
 Do a HARDWARE Factory Restore.
The MNGP is showing
“Mode is OFF”
 Enter the Main Menu and select “Mode.” Turn the Mode “ON” and
depress Enter to save. Depress Status to return to the main
screen.
 If using the Classic for wind and you cannot turn the mode on,
this may indicate the wind curve is not linear and the Classic