Message
Possible cause
Remedy
1220 W
AII%d.0%d - error
power supply
Power supply for ext. sensor at analogue
input faulty.
Check the power supply.
1221 W
AII%d.0%d - overload
fault
Overload at analogue input for ext. sen‐
sor.
Contact an authorised serv‐
ice partner.
1222 W
AII%d.0%d - open
circuit
Wire break in line for ext. sensor at ana‐
logue input.
Check line paths and sensor
connection.
1223 W
AII%d.0%d - short-
circuit
Short circuit in line for ext. sensor at ana‐
logue input.
Check line paths and sensor
connection.
1226 W
AIR%d.0%d - accidental
ground
Ground fault in line for ext. sensor at ana‐
logue input.
Check line paths and sensor
connection.
1227 W
AIR%d.0%d - short-
circuit
Short circuit in line for indicated analogue
input.
Check line paths and sensor
connection.
1228 W
AIR%d.0%d - open
circuit
Wire break in line for indicated analogue
input.
Check line paths and sensor
connection.
1229 W
AIR%d.0%d - sensor
fault
Sensor fault at indicated analogue input. Check line paths and sensor
connection.
1230 W
AIR%d.0%d - open
circuit
Wire break in line for indicated analogue
input.
Check line paths and sensor
connection.
1232 W
AIR%d.0%d - accidental
ground
Ground fault in line for ext. sensor at ana‐
logue input.
Check line paths and sensor
connection.
1233 W
AIR%d.0%d - short-
circuit
Short circuit in line for indicated analogue
input.
Check line paths and sensor
connection.
1234 W
AIR%d.0%d - open
circuit
Wire break in line for indicated analogue
input.
Check line paths and sensor
connection.
1235 W
AIR%d.0%d - sensor
fault
Sensor fault at indicated analogue input. Check line paths and sensor
connection.
1236 W
AIR%d.0%d - open
circuit
Wire break in line for indicated analogue
input.
Check line paths and sensor
connection.
1238 W
AIR%d.0%d - accidental
ground
Ground fault in line for ext. sensor at ana‐
logue input.
Check line paths and sensor
connection.
10 Fault Recognition and Rectification
10.3 Interpreting warning messages
No.: 9_9450 12 E
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.0.X
223