Carrier VECTOR 6500, Operation & Service Manual

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Alarm
NO.
Steps Alarm/Cause Corrective Action
23 A/C CURRENT OVER LIMIT
•
TRIGGER ON: The high voltage amp draw is over the limit shown in the following table for more
than 10 seconds.
CONDITION DRAW
Engine High / Low Speed, Standby Cool or Pretrip 30A
Engine High Speed Heat 18A
Engine Low Speed or Standby Heat 14A
Engine High Speed Defrost (With heaters energized) 16A
Engine Low Speed or Standby Heat Defrost 12A
Engine High/Low Speed or Null 8A
Engine Low Speed or Standby Null 8A
Engine or Standby Natural Defrost (when heaters are de-energized) 10A
•
UNIT CONTROL: Engine Operation: refrigeration system shutdown and alarm.
Standby Operation: refrigeration system shutdown and alarm with PSCON
still energized.
•
RESET CONDITION: Auto reset after 15 minutes or alarm may be manually reset via keypad or by
turning the unit OFF, then back ON.
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 Perform Pretrip.
Clear Active Alarm list, then run Pre-
trip & check for any new alarms.
Any active alarms must be corrected and cleared be-
fore proceeding.
2 Check Configurations for Correct Maximum Amps Settings
a. Check DIESEL MAX GEN AMPS
configuration setting.
Setting should be 24 - 25 Amps. Maximum recom-
mended setting is 25 Amps. Minimum recommended
setting is 22 Amps.
b. Check STANDBY MAX GEN AMPS
configuration setting.
Setting should be 22 - 25 Amps. Maximum recom-
mended setting is 25 Amps. Minimum recommended
setting is 22 Amps.
c. Check STARTUP MAX AMPS con-
figuration setting.
Setting should be 15 - 19 Amps. Maximum recom-
mended setting is 19 Amps.
d. Check DIESEL OFFSET MAX
AMPS configuration setting.
Setting should be 4 Amps.
3 Check For Electrical Failure In System
a. Check electrical motors. Visually inspect condenser fans and evaporator fan
for damage to motor or fan blade, or for foreign ma-
terial obstructing the movement of the fan. Listen for
noise caused by failed bearing or motor obstruction.
b. Check for defective wiring. Check for discolored wiring at contactors and loose
connections.
c. Check for defective contactor. Remove and replace any suspected contactor(s).
Additional steps on the next page.