Message Possible cause Remedy
0031 W
Motor bearings h ⇞
Motor bearing of com‐
pressor motor:
Maintenance interval
has elapsed.
Contact KAESER Service.
0032 W
Electrical equipment h ⇞
Electric components and
installation:
Maintenance interval
has elapsed.
Inspect and reset the mainte‐
nance interval counter.
0033 W
Fan bearings h ⇞
Motor bearing of fan mo‐
tors:
Maintenance interval
has elapsed.
Contact KAESER Service.
0034 W
PD temperature ↓
Package discharge (PD)
temperature too low.
Contact KAESER Service.
0035 W
PD temperature ↑
Compressed air dis‐
charge temperature too
high.
Clean the cooler.
Check the cooling oil level.
0036 W
Motor starts/h ⇞
The permissible number
of motor starts was ex‐
ceeded in the last 60 mi‐
nutes.
Extend the idle period.
Increase the capacity of the
air receiver.
Increase the cross-section of
piping between compressor
and air receiver.
0037 W
Motor starts/d ⇞
The permissible number
of motor starts was ex‐
ceeded in the last
24 hours.
Extend the idle period.
Increase the capacity of the
air receiver.
Increase the cross-section of
piping between compressor
and air receiver.
0038 W
Blow-off protection ↑
The safety relief valve's
activating pressure will
soon be reached.
Change the oil separator car‐
tridge.
Open the shut-off valve in the
venting line.
0041 W
Mains voltage ↓
1. Power failure:
The machine is auto‐
matically restarted.
Check power supply.
Check the door interlock
switch.
0043 W
External load signal?
Ambiguous external
load signal:
Increased cut-out pres‐
sure exceeded.
The external load con‐
trol has not switched to
idle.
Check settings of the external
controller. Take into account
pressure drops across filters
and dryer.
0044 W
Oil temperature ↓
Cooling oil temperature
too low.
Check temperature switch,
line and connection.
Check the oil circuit.
Increase room temperature.
9 Fault Recognition and Rectification
9.5 Interpreting warning messages
164
Service manual Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3 9_9450 03USE
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