Message Possible cause Remedy
0069 W
Error operation without RD → Call
service!
Refrigerated dryer de‐
fective.
Compressed air supply
with undried air is acti‐
vated.
Immediately contact KAESER
service.
0070 W
Refrigeration dryer T ↑
Refrigerated dryer:
Compressed air temper‐
ature too high.
Maintain operating conditions.
Clean the refrigerant liquefier.
Clean the cooler.
Install an extractor fan.
0071 W
Oil level ↓
Cooling oil level too low. Replenish the cooling oil.
0072 W
RD condensate drain
Refrigerated dryer:
The condensate drain is
defective.
Check condensate drainage
0081 W
0082 W
0083 W
0084 W
0085 W
0086 W
0087 W
0088 W
0089 W
0090 W
0091 W
0092 W
0093 W
p-Switch pi
0094 W
T-Switch ADT
0095 W
p-Switch pN
Tab. 6 Warning messages and remedies
16 Interpreting warning messages
9_9450 03 USE
Quick user guide Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3
35
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