7
−
10
62-11389
Alarm
NO.
Steps
Alarm/Cause
Corrective Action
16
BATTERY VOLTAGE TOO LOW
•
TRIGGER–ON: Voltage at the microprocessor is less than 10 VDC (except when the engine starter
is engaged.)
•
UNIT CONTROL: Unit Shutdown & Alarm. Alarm condition only if activated while starting unit.
•
RESET CONDITION: Auto Reset after 15 minutes when the voltage at the microprocessor is
between 11 - 14 VDC, or alarm may be manually reset via keypad
or by turning the unit off, then
back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
1
Check For Alarm 51
Check for “Alternator Not Charging
Alarm”. (
Note
: The A51 name is car-
ried over from unit models with alter-
nators. For the Vector Model, Alarm
51 indicates that the solid state bat-
tery charger is not performing cor-
rectly.)
Alarm conditions must be corrected and the alarm
cleared to continue.
2
Check Battery Voltage
a. Inspect battery cable ends and
posts.
Must be clean and tight.
b. Test voltage at battery with unit off. Must be above 11 VDC.
c. Test voltage at battery with unit
running.
Must be above 11 VDC.
d. Test specific gravity of battery.
(Check for battery specifications.)
e. Perform load test on battery.
(Follow battery manufacturer’s
procedure.)
(Check for battery specifications.)
3
Check Voltage At Microprocessor
a. Check voltage reading at
microprocessor input (MPQC1+ to
MPQC2-).
Must be above 11 VDC.
b. Check voltage reading on
microprocessor display.
Must be within 0.5 VDC of reading obtained at QC-1.
