Message
Possible cause
Remedy
0032 A
Heavy load monitoring
triggered
Frequency converter fault
Contact an authorised service partner.
0033 A
Blower motor FC: STO-
function inactive
STO channels fault
Check STO channels
0034 A
Blower motor FC off -
STO?
STO channels fault
Check STO channels
0035 A
dp ⇟
Working pressure very low
Check operating conditions.
Check all supply lines, drainage lines, in‐
let and outlet silencers and airend.
0036 A
Rotational direction block
Drive motor rotating in
wrong direction.
Reverse supply lines L1 and L2.
0037 A
pRV ⇞
Safety valve does not open Contact an authorised service partner.
0038 A
Drag indicator p1 ⇟
Pressure peaks in vacuum
network
Check operating conditions
0039 A
Drag indicator p2 ⇞
Pressure peaks in com‐
pressed air network
Check operating conditions
0040 A
Surge arrester
Overvoltage in the power
supply (Canadian version
only)
Check power supply
Contact an authorised service partner.
0050 A
Greasing system
Relubrication device fault
Contact an authorised service partner.
0057 A
Model?
Machine type unclear.
Contact an authorised service partner.
0074 A
External message 2
1)
0075 A
External message 3
1)
0080 A
Vibration monitoring VSE
⇞
Alarm from vibration moni‐
toring
Contact an authorised service partner.
0092 A
Switch p1
1)
0093 A
Switch p2
1)
0094 A
Switch T1
1)
0095 A
Switch T2
1)
0096 A
Switch block speed
1)
10 Fault Recognition and Rectification
10.2 Interpreting alarm messages
No.: 901700 14 E
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 4.0.X
159
