Message
Possible cause
Remedy
0003 A
Fan motor
Current draw of fan motor
too high.
Defective fan motor.
Fan wheel jammed or dama‐
ged.
Check fan
Check operating conditions.
0004 A
Mains contactor
feedback signal
Mains contactor does not
pull out.
Mains contactor welded.
Reset spring on mains con‐
tactor defective.
Feedback contact defective.
I/O wiring defective.
Contact an authorised service partner.
0005 A
Motor stop
Drive system fault.
Check drive motor and belt drive.
0006 A
Phase error blower motor
Electrical supply line has in‐
correct phase sequence.
Ensure clockwise rotation.
Check all three phases
0007 A
Vibration alarm
Vibration
Check transport securing device re‐
moved.
Check vibration isolation in connecting
line.
Contact an authorised service partner.
0008 A
Oil level side A
Lubricant level at airend
drive-end too low.
Replenish lubricating oil.
0009 A
p1 ⇟
Inlet pressure too low.
Inlet filter clogged.
Check operating conditions.
Check all supply lines, airend inlet silenc‐
er and inlet filter.
0010 A
p2 ⇞
Final pressure too high.
Check operating conditions.
Check all drainage lines, outlet silencer
and airend.
0011 A
dp ⇞
Differential pressure too
high.
Check operating conditions.
Check all supply lines, drainage lines, in‐
let and outlet silencers and airend.
0012 A
T2 ⇞
Airend discharge tempera‐
ture too high.
Check ambient conditions.
Check function of sound enclosure fan.
0013 A
T_S ⇞
Sound enclosure tempera‐
ture too high.
Keep ambient conditions within specified
limits.
Check function of sound enclosure fan.
0014 A
T_S ⇟
Sound enclosure tempera‐
ture too low.
Check function of machine heating sys‐
tem.
Keep ambient conditions within specified
limits.
10 Fault Recognition and Rectification
10.2 Interpreting alarm messages
No.: 901700 14 E
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 4.0.X
157
