Enerpro Document No: OP-0116; Rev.
A
Page 3 of 3
ECO #19-11073; Release Date: 07/23/2019
5.
Output Out of Range.
Voltage outside the ranges listed above may be due to VR31
malfunction, a defective AuxGen (Step 1) or a defective or damaged battery. Note that the output
measured is rectifier voltage, not battery voltage. Because of diode drop and cabling resistance,
battery voltage may be as much as 6 volts lower than rectifier voltage depending on battery state
of charge and health.
a.
Stage 1 voltage low.
With the Stage 1 LED illuminated, check battery current IB. If IB is
normal (0.8- 0.95 VDC, 80-95 amps), check RP voltage. If RP voltage is 68 VDC or
above, allow to run and check again in 1 hour. If RP is below 68 VDC or does not
increase after 1 hour, test battery for shorted cells or other defects.
b.
Stage 1 battery current out of range.
If Stage 1 is illuminated and IB is out of range
(0.8- 0.95 VDC, 80-95 amps), remove and replace VR31.
c.
Stage 2 or 3 voltage out of range.
Remove and replace VR31.
