KAESER SIGMA CONTROL 2 - Interpreting warning messages

Message Possible cause Remedy
0242 A
Compressor motor USS
error %d
Fault on bus to frequency con‐
verter.
Contact an authorized KAESER serv‐
ice representative.
0243 A
Compressor motor FC
alarm %d
Frequency converter alarm mes‐
sage with message number.
Contact an authorized KAESER serv‐
ice representative.
0244 A
Compressor motor FC
activation failed
Frequency converter switched
on incorrectly.
Contact an authorized KAESER serv‐
ice representative.
0245 A
Compressor motor FC
run-up time exceeded
Minimum speed not reached
with a defined time (configura‐
ble).
Check the setting.
Contact an authorized KAESER serv‐
ice representative.
0246 A
Compressor motor FC
nMin undershot
Speed dropped below minimum
by a specified value (configura‐
ble) for a defined time (configu‐
rable).
Check the settings.
Contact an authorized KAESER serv‐
ice representative.
0247 A
Compressor motor FC:
STO function inactive
Parametrization error. Contact an authorized KAESER serv‐
ice representative.
0248 A
Compressor motor FC off
- STO?
Parametrization error. Contact an authorized KAESER serv‐
ice representative.
0251 A
Oil-/air cooler fan USS
alarm
Alarm triggered by software driv‐
er.
Contact an authorized KAESER serv‐
ice representative.
0253 A
Oil-/air cooler fan FC
PKW error P%d.E%d
Frequency converter fault. Contact an authorized KAESER serv‐
ice representative.
0255 A
Oil-/air cooler fan USS
error %d
Alarm triggered by software driv‐
er.
Contact an authorized KAESER serv‐
ice representative.
0270 A
Oil-/air cooler fan FC
Motor overload alarm
Fan motor overload. Contact an authorized KAESER serv‐
ice representative.
0271 A
Oil-/air cooler fan FC
Alarm %d
Frequency converter alarm mes‐
sage with message number.
Contact an authorized KAESER serv‐
ice representative.
0280 A
Oil-/air cooler fan USS
alarm
Alarm triggered by software driv‐
er.
Contact an authorized KAESER serv‐
ice representative.
0281 A
Oil-/air cooler fan FC
PKW error P%d.E%d
Frequency converter fault. Contact an authorized KAESER serv‐
ice representative.
0282 A
Oil-/air cooler fan USS
error %d
Alarm triggered by software driv‐
er.
Contact an authorized KAESER serv‐
ice representative.
10 Fault Recognition and Rectification
10.2 Interpreting fault messages
204
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.1.2 No.: 9_9450 13 USE