Installation Manual
Classic owner’s manual Rev I 2193
62 | P a g e 1 0 - 0 0 1 - 1 R E V : I
Updating the firmware
and the Classic went
well but the MNGP will
not update
*Make sure the MNGP (Display) is actually plugged in using the blue display
cable in the top jack of the main circuit board
*Verify you have an MNGP and not an MNLP. The MNLP is an LED panel
that comes with the Classic Lite and does not need to be updated
*When the black box pops up telling you to power the Classic up, Count to 4
before turning the breaker on
*If you do not have a breaker or disconnect and you are trying to connect a
wire to a terminal block or a battery the connection will likely be to dirty for
the boot loader. Install the proper breakers
Classic goes to absorb at
too low of a voltage
*Verify this is not normal operation due to the battery being warmer than the
neutral point. You can verify the battery temperature by going into the main
menu and selecting the ―Temps‖ menu. The Classic like all other chargers will
adjust the actual charge voltage based on the temperature of the battery. It uses
2 variables you program in for this. 1-Temperature neutral point (Typically 25
degrees C) and this is found in the WBjr set up menus. 2-Milli volts per degree
C per cell (typically -5Mv). So verify both of these are set per the battery
manufacturers specs.
So for an example if Absorb was set for 58.8 volts and the battery is at 35
degrees C and the temp comp is set for -5mv we have a 10 degree C
difference:
10 x 24 = 240 x 5 = 1200Mv or 1.2v so the Classic would actually charge to
57.6v
Classic goes to absorb at
too high of a voltage
*Verify this is not normal operation do to the battery being cooler than the
Neutral point. You can verify the battery temperature by going into the main
menu and selecting the ―Temps‖ menu. The Classic like all other chargers will
adjust the actual charge voltage based on the temperature of the battery.
See above calculation’s the same works for cold batteries as well you just end
up with a negative number so a battery that is 15 degrees C would look like:
-10x24 = -240x5 = -1200Mv or -1.2v so the Classic would actually charge to
60v
Classicgoes to Float to
early
*Make sure End Amps is not set too high causing the Classic to go to Float
(End Amps is in the Charge menu and the way it works is if the charge current
falls below the End Amps setting AND the Classic is in Absorb the Classic will
go to Float. Setting End Amps to 0 will disable it. End Amps setting is a value
the battery manufacturer supplies
*Make sure you have the Absorb time is set properly
Follow Me with my
Classic is not working
*Classic Lites older than serial # CL05435 did not work with Follow Me
please call customer service for a new MNLP
*Verify you are seeing the short blips of the blue LED internally as talked
about above. If not please check all your cables.
My Classicsays ―OCP is
OFF‖ on the display
*This can happen on older Classics that have had the firmware updated. This
will have no effect on the operation of the classic but to make the message go
away do a factory restore to fix this. (Warning all settings will be lost)
My Classic says ―OCP‖
now and then on the
*This can be normal if the battery bank is small or the inverter cables are too
small. If this shows up just once in a great while that would be ok but if it is