Message Possible cause Remedy
0001 W
Equipment number
incomplete
Equipment number not entered, or en‐
tered incompletely.
Contact an authorized KAES‐
ER service representative.
0002 W
Motor temperature ↑
Compressor motor hot. Keep ambient conditions with‐
in specified limits.
Check the cooling air supply.
Clean the motor.
0003 W
Air filter Δp ↑ - Change
prefilter!
Prefilter clogged. Change the prefilter at the
earliest opportunity.
0004 W
Oil separator Δp ↑
Increased differential pressure in oil sep‐
arator cartridge.
Oil separator cartridge clogged.
Change oil separator car‐
tridge.
0005 W
Idle warm-up
Idling warm-up activated —
0006 W
Surge arrester
High voltage in the power supply (Cana‐
dian version only)
Check power supply.
Contact an authorized KAES‐
ER service representative.
0007 W
Power supply monitor
High voltage or low voltage in the power
supply.
Check voltage alarm setting
and power supply.
Contact an authorized KAES‐
ER service representative.
0008 W
Airend discharge
temperature ADT ↑
Maximum airend discharge temperature
almost reached.
Clean cooler.
Check cooling oil level.
Change oil filter.
Ensure adequate ventilation.
Keep installation conditions
within specified limits.
0010 W
Oil filter 2 Δp ↑
Increased differential pressure in oil filter.
Oil filter clogged.
Change oil filter.
0011 W
Oil filter 1 Δp ↑
Increased differential pressure in oil filter.
Oil filter clogged.
Change oil filter.
0013 W
Air filter Δp ↑ - Change
air filter!
Air filter clogged. Change air filter.
0015 W
Com-Module
communication error
Bus link via PROFIBUS interface inter‐
rupted.
Check bus lines and bus con‐
nector.
0021 W
Refrigeration dryer T ⇟
Refrigerated dryer:
Compressed air temperature too low.
Keep ambient conditions with‐
in specified limits.
Contact an authorized KAES‐
ER service representative.
10 Fault Recognition and Rectification
10.3 Interpreting warning messages
No.: 9_9450 13 USE
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.1.2
207
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