Carrier VECTOR 6500 Operation & Service Manual page 142

Alarm
Steps
NO.
15 BATTERY VOLTAGE TOO HIGH
•
TRIGGER–ON: Voltage at the microprocessor is greater than 17 VDC.
•
UNIT CONTROL:
•
RESET CONDITION: Auto Reset after 15 minutes when the voltage at the microprocessor is
between 11 and 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 Battery Voltage
a. Test voltage at battery with unit
off.
b. Test voltage at battery with unit
running.
2 Check Battery Charger Voltage
a. Test voltage at battery charger
output terminal with unit off.
b. Test voltage at battery charger
output terminal with unit running.
3 Check Voltage At Microprocessor
a. Check voltage reading at
microprocessor input (QC1+ to
QC2-.)
b. Check voltage reading on
microprocessor display.
Alarm/Cause
Engine Operation: engine and unit shutdown and alarm.
Standby Operation: refrigeration system shutdown and alarm with PSCON
still energized.
7−9
Corrective Action
Must be between 11-16 VDC.
Must be between 12-16 VDC.
Must be between 11-16 VDC.
Must be between 12-16 VDC.
Energize circuit. (See Note 2 page 7−2.)
Must be between 11-16 VDC.
Must be within 0.5 VDC of reading obtained at QC-1.
62-11389