Classic SL owner’s manual REV E 2056
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P a g e 1 0 - 0 0 1 - 3 R E V : E
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 Display 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 4 conductor phone cable
Classic says “Resting”
but the sun is out
*Resting indicates a lack of power available to the Classic. Verify you have
voltage on the display under the “IN” that is at least 130% 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 can be 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 customer service
*Try doing a factory restore. (Warning all settings will be lost)
The Display shows 0
volts in (or real 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 customer
service.
The Display is showing
all 0s and or “Got
Comm”
*Make sure you did not put a different display on the Classic, Firmware must
match on the Classic and MNGP.
*Do a HARDWARE Factory Restore (See manual)
The Display is showing
“Mode is OFF”
*Enter the main menu and select “Mode”. Turn the Mode “ON” ad press Enter
to save this. Then press Status to return to the main screen.
*If using the Classic for wind and you cannot turn the mode on this can also
indicate the wind curve is not linear and the classic cannot work with it. Please
make sure the wind curve continually goes up hill.
Stuck in the Quick Start
or “VMM”
*Check that the blue display cable is plugged in and connections are sound.
Try unplugging it and plugging it back in. Check for corrosion also.
*Do a HARDWARE Factory Restore (See manual)
The MNGP (Display) is
fuzzy or has odd
characters
*Check to make sure the blue display cable is plugged in well and that it is not
running down over the 2 big yellow inductors on the left hand side of the
circuit board.
Multiple charge
controllers and one or
more is showing 0 watts
and absorb or float
*This is normal as the battery is almost full and the extra power is not needed
so the controller throttles back to prevent over charging of the battery
Multiple Classics in
Follow Me and they are
not all making the same
amount of power?
*This is normal as Follow Me simply coordinates the charge stages, each
Classic still works independently as far as regulating the PV array.
Summary of Contents for Classic 150-SL
Page 16: ...Classic SL owner s manual REV E 2056 16 P a g e 1 0 0 0 1 3 R E V E Diagram 1...
Page 38: ...Classic SL owner s manual REV E 2056 38 P a g e 1 0 0 0 1 3 R E V E...
Page 39: ...Classic SL owner s manual REV E 2056 39 P a g e 1 0 0 0 1 3 R E V E...
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Page 41: ...Classic SL owner s manual REV E 2056 41 P a g e 1 0 0 0 1 3 R E V E Table 8...