9
If the above checks have been made but the converter output still reads 0.0 VDC, the converter is
not functioning properly. Contact the Arterra Distribution Power PROs at 1 (877) 294-8997.
AC REVERSE POLARITY (AUDIBLE ALARM)
This power center is equipped with an AC REVERSE POLARITY PROTECTION feature. Should
the incoming AC neutral wire and lead wire be connected backwards at the power center, an
alarm located in the power center enclosure will sound. This alarm will continue to sound until
the AC wires are connected correctly.
Should it be determined that the WF-8900-AD-MBA Series Main Board Assembly needs to be
replaced, removal of the Main Board Assembly Is a simple process.
REPLACING THE CONVERTER SECTION (MBA)
Make sure no AC power is coming into the RV from either the Shore Power cord or an on-board
generator. Remove and set aside the Reverse Polarity Fuses located on the fuse board to
disconnect the converter section from the rest of the RV’s DC power.
Figure 4
