9 Fault Recognition and Rectification
9.1 Basic instructions
The following tables are intended to assist in locating faults.
SIGMA CONTROL 2 will indicate three types of faults:
■ Fault on the machine:
The
red LED
flashes, the machine is shut down, see chapters 9.2 and 9.4.
■ Fault on the controller:
The machine is shut down, see chapter 9.3.
■ Warning:
The
yellow LED
illuminates, the machine is not shut down, see chapter 9.5.
The messages valid for your machine are dependent on the controller and individual equipment fit‐
ted.
1. Do not attempt fault rectification measures other than those given in this manual!
2. In all other cases:
Have the fault rectified by an authorized KAESER service representative.
9.2 Interpreting alarm messages
If an input signal is classified as an alarm, the controller will display the alarm upon the sig‐
nal's arrival.
Consequences
■ The
red LED
flashes:
■ The controller switches the machine off.
Alarm messages are identified with the letter A.
The message numbers are not numbered consecutively.
Messages 0081 to 0095 are customer-specific and may differ from the suggested values. Com‐
plete them with your defined message text, possible causes and remedies.
Message Possible cause Remedy
0001 A
Direction of rotation
The compressor drive motor
is turning in the wrong di‐
rection.
Change over phase
lines L1 and L2.
0002 A
Motor temperature ⇞
Compressor drive motor
overheated.
Clean the motor.
Keep ambient condi‐
tions within specified
limits.
0003 A
pRV ⇞
The activating pressure of
the safety relief valve on the
oil separator tank has been
exceeded.
Change the safety
relief valve.
0004 A
EMERGENCY STOP
EMERGENCY STOP push
button actuated.
Unlatch the push
button.
9 Fault Recognition and Rectification
9.1 Basic instructions
9_9450 03USE
Service manual Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3
157
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