KAESER SIGMA CONTROL 2 User Manual

Message Possible cause Remedy
0021 A
Refrigeration dryer T ⇟
Refrigerated dryer:
Compressed air temperature too
low.
Contact an authorized KAESER serv‐
ice representative.
0022 A
Oil separator Δp ⇞
Oil separator cartridge clogged. Replace the oil separator cartridge.
0032 A
Oil pressure ⇞
Cooling oil temperature too low,
resulting in highly viscous cool‐
ing oil.
Residue within the cooling oil
lines.
Keep ambient conditions within speci‐
fied limits.
Contact an authorized KAESER serv‐
ice representative.
0033 A
Oil pressure ⇟
Oil level too low.
Defective oil pump (vacuum ma‐
chines only).
Check the cooling oil level.
If necessary, have pump replaced by
an authorised service partner.
0034 A
Mains contactor on?
Compressor motor main contac‐
tor not switching on.
Check mains contactor and wiring.
0035 A
Cabinet fan I ⇞
Overload shutdown of control
cabinet fan motor.
Contact an authorized KAESER serv‐
ice representative.
0038 A
PD temperature ⇟
Compressed air discharge tem‐
perature too low.
Contact an authorized KAESER serv‐
ice representative.
0039 A
PD temperature ⇞
Compressed air discharge tem‐
perature too high.
Check the cooling oil level.
Clean the cooler.
Check the fan motor.
0040 A
Mains contactor off?
Compressor motor main contac‐
tor not switching off.
Check main contactor and wiring.
0041 A
Mains voltage ⇟
Second voltage drop. Check the supply voltage.
Check the door limit switch.
0042 A
Back pressure stop
Back pressure in oil separator
tank due to defective venting.
Check the venting line.
0043 A
Airend discharge
temperature ADT rise
dT/dt ⇞
Permissible rate of rise for air‐
end discharge temperature
(ADT) exceeded.
Check the cooling oil level.
0044 A
No pressure buildup
Machine does not produce com‐
pressed air.
Gauge working pressure does
not rise above 50 psig within a
specified time period.
Machine does not go into LOAD
Minimum pressure/check valve
defective.
Check the machine for leaks.
Check coupling and V-belt.
Contact an authorized KAESER serv‐
ice representative.
0048 A
High-voltage cell
High-voltage cell alarm. Contact an authorized KAESER serv‐
ice representative.
0050 A
Customer-provided
power element
Power switching not ready or
faulty.
Check the power switching.
10 Fault Recognition and Rectification
10.2 Interpreting fault messages
No.: 9_9450 13 USE
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.1.2
199

KAESER SIGMA CONTROL 2 Specifications

General

Controller Type	Microprocessor-based
Model	SIGMA CONTROL 2
Manufacturer	KAESER
Input Voltage	24 V DC
Protection Class	IP54
Communication Protocols	Modbus, Profibus
Data Logging	Comprehensive data logging
Remote Monitoring	Yes
Communication Interface	Ethernet