GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) - Manual (Page 56)

This alarm/warning could also occur should the brake resistor overheat. Terminal 104 to 106 are available as brake resistor. Klixon inputs, see section Brake
Resistor Temperature Switch.
WARNING/ALARM 28, Brake check failed
Brake resistor fault: the brake resistor is not connected or not working.
Check par. B-15 Brake Check.
ALARM 29, Heatsink temp
The maximum temperature of the heatsink has been exceeded. The temperature fault will not be reset until the temperature falls below a defined heatsink
temperature. The trip and reset point are different based on the frequency converter power size.
Troubleshooting:
Ambient temperature too high.
Motor cable too long.
Incorrect clearance above and below the frequency converter.
Dirty heatsink.
Blocked air flow around the frequency converter.
Damaged heatsink fan.
For the 4x, 5x and 6x Frame frequency converters, this alarm is based on the temperature measured by the heatsink sensor mounted inside the IGBT modules.
For the 6x Frame frequency converters, this alarm can also be caused by the thermal sensor in the rectifier module. See the rating table in Section 1.9 for the trip
point.
Troubleshooting:
Check fan resistance (see section 6.2.9 or 6.2.10).
Check soft charge fuses (see section 6.2.1 or 6.2.3).
IGBT thermal sensor (see section 6.2.8).
ALARM 30, Motor phase U missing
Motor phase U between the frequency converter and the motor is missing.
Turn off the frequency converter and check motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the frequency converter and the motor is missing.
Turn off the frequency converter and check motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the frequency converter and the motor is missing.
Turn off the frequency converter and check motor phase W.
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time period. Let the unit cool to operating temperature.
WARNING/ALARM 34, Network communication fault
The network on the communication option card is not working.
WARNING/ALARM 35, Out of frequency range:
This warning is active if the output frequency has reached the high limit (set in parameter H-73) or low limit (set in parameter H-72). In Process Control, Closed
Loop, par. H-40 Configuration Mode this warning is displayed.
WARNING/ALARM 36, Mains failure
This warning/alarm is only active if the supply voltage to the frequency converter is lost and par. SP-10 Line failure is NOT set to OFF. Check the fuses to the
frequency converter
ALARM 38, Internal fault
It may be necessary to contact your GE supplier. Some typical alarm messages:
AF-650 GP and AF-600 FP High Power Service Manual
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