Message Possible cause Remedy
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.
0046 W
System pressure ↓
Network pressure has
fallen below the set
“system pressure low”
value.
Air consumption too
high.
Check air demand.
Check cable runs and sensor
connections.
Check the 'system pressure
low' warning value.
0047 W
No pressure buildup
The compressor cannot
build-up to working pres‐
sure.
Check for air leaks.
Check the value for internal
pressure given in the
<Analog
data>
menu against the read‐
ing on the oil separator tank
pressure gauge.
0048 W
Bearing lube h ⇞
Re-grease the motor
bearings.
Maintenance interval
has elapsed.
Re-grease the motor bear‐
ings.
0049 W
Annual maintenance
Last maintenance was
1 year ago.
Carry out the necessary
maintenance and reset the
corresponding maintenance
interval counter.
0059 W
Start temperature ↓↓
The airend temperature
is too low (< 14°F) for
the machine to be oper‐
ated.
Keep ambient conditions
within specified limits.
0060 W
Start temperature ↓
The airend temperature
is too low (< 36°F).
Keep ambient conditions
within specified limits.
0061 W
Compressor T ↓
The airend discharge
temperature (ADT) did
not reach the minimum
value within the speci‐
fied time.
Contact KAESER Service.
0066 W
Air filter Δp ⇡
Initial warning:
Air filter clogged.
Change the air filter element
soon.
0068 W
Condensate drain
The condensate drain is
defective.
Check the condensate drain
and drain line.
16 Interpreting warning messages
34
Quick user guide Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3 9_9450 03 USE
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