49
LEGEND
NOTE:
1. Warning or Alarm is determined by the setting of the reference
Parameter.
062 Warning
Output
Frequency at
Maximum Limit
The output frequency has reached the
value set in parameter 4-19 Max Output
Frequency
The warning clears when the output drops below
the maximum limit
064 Warning Voltage Limit Supply Voltage is too low
Check supply voltage to determine if within
permissable limits of VFD
065
Warning/
Alarm
Control Card
Over-
Temperature
The temperature limit of the control card
has been exceeded
• Check that the ambient operating temperature
is within the limits.
• Check for clogged filters.
• Check the fan operation.
• Check the control card
066 Warning
Heat Sink
Temperature Low
The frequency converter is too cold to
operate. This warning is based on the
temperature sensor in the IGBT module
Confirm that the VFD heater is working properly
by checking voltage across the heater terminals,
120V should be present at low temperatures
which would trigger this warning
068 Alarm Safe Stop Safe Stop input has been activated Yes Check Compressor High Pressure Switch
5-19 Terminal
37 Safe Stop
069 Alarm
Power Card
Temperature
The temperature sensor on the power card
is either too hot or too cold
• Check that the ambient operating temperature
is within limits.
• Check for clogged filters.
• Check fan operation.
• Check the power card
072 Alarm Emergency Stop An unexpected combination of failures Contact Carrier Service
098 Warning Clock Fault Time is not set or the RTC clock has failed
Reset the clock in parameter 0-70 Date and Time.
Contact Carrier Service
0-7* Clock
Settings
243
Warning/
Alarm
IGBT Fault
IGBT is defective or not functioning
properly
Contact Carrier Service
244
Warning/
Alarm
Heat Sink
Temperature
This alarm is generated by the Variable Fre-
quency Drive. The alarm will be generated if
the maximum temperature of the heat sink
has been exceeded. The temperature fault
cannot
reset until the temperature drops
below a defined heat sink temperature. The
trip and reset points are different based on
the power size. This alarm is equivalent to
A29 - Heat Sink Temp.
The circuit is
shut down or not
allowed to start.
Automatic, after heat sink temperature falls below
a preset point.
246 Al
arm
Power Card
Supply
247 Alarm
Power Card
Temperature
Table 13 — Alarms List (cont)
CODE
WARNING/
ALARM
DESCRIPTION POSSIBLE CAUSES
DOES MACHINE
SHUT DOWN
ACTION TO
BE TAKEN
REFERENCE
PARAMETER
AMA — Automatic Motor Adaptation
IGBT — Insulated Gate Bipolar Transistor
PTC — Positive Temperature Coefficient
VFD — Variable Frequency Drive
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