Chiller Troubleshooting
66
ARTC-SVX002A-EN
Variable Frequency Drive Fault
Codes (Optional)
The following table lists the faults by code number and
describes each.
Warnings and faults indicate an abnormal drive status.
The codes and names of active warnings and faults are
displayed on the control panel of the drive as well as in the
Drive composer PC tool. Only the codes of warnings and
faults are available over fieldbus.
Warnings do not need to be reset; they stop showing when
the cause of the warning ceases. Warnings do not latch and
the drive will continue to operate the motor.
Faults latch inside the drive and cause the drive to trip, and
the motor stops. After the cause of a fault has been
removed, the fault can be reset from the panel or from a
selectable source (parameter 31.11 Fault reset selection)
such as the digital inputs of the drive. Reseting the fault
creates an event 64FF Fault reset. After the reset, the drive
can be restarted.
Note that some faults require a reboot of the control unit
either by switching the power off and on, or using
parameter 96.08 Control board boot – this is mentioned in
the fault listing wherever appropriate.
18. Symptom: Freeze protection safety activated
Possible Causes
Potential Solutions
Thermostat set too low
Reset above freezing temperature at evaporate or discharge
Low water flow
Remove restrictions. Increase HP
Low suction pressure
See “low suction pressure”
Code (hex)
Fault / Aux. code
Cause
What to do
1080
Backup/Restore timeout
Panel or PC tool has failed to
communicate with the drive when
backup was being made or restored.
Request backup or restore again.
1081
Rating ID fault
Drive software has not been able to read
the rating ID of the drive.
Reset the fault to make the drive try to
reread the rating ID.
If the fault reappears, cycle the power to
the drive. You may have to be repeat
this. If the fault persists, contact your
local ABB representative.
2310
Overcurrent
Output current has exceeded internal
fault limit.
In addition to an actual overcurrent
situation, this fault may also be caused
by an earth fault or supply phase loss.
Check motor load.
Check acceleration times in parameter
group 23 Speed reference ramp (speed
control), 26 Torque reference chain
(torque control) or 28 Frequency
reference chain (frequency control).
Also check parameters 46.01 Speed
scaling, 46.02 Frequency scaling and
46.03 Torque scaling.
Check motor and motor cable (including
phasing and delta/star connection).
Check there are no contactors opening
and closing in motor cable.
Check that the start-up data in
parameter group 99 corresponds to the
motor rating plate.
Check that there are no power factor
correction capacitors or surge absorbers
in motor cable.
Check for an earth fault in motor or
motor cables by measuring the
insulation resistances of motor and
motor cable.
