GB-15
D
GB
F
NL
I
E
2 2
? The display blinks and indicates
22
.
!
Actuator IC 20 has been wired incorrectly.
•
Check the wiring. Wire the outputs and inputs
of connection terminals 52 – 55 as shown in the
connection diagram – see page 8 (IC 20..E
connected to BCU 570..F1).
!
The unit has suffered an internal fault in the power
module.
•
Replace the power module.
2 3
? The display blinks and indicates
23
.
!
The butterfly valve position is not constantly sig-
nalled back to the BCU.
•
Check the wiring and ensure that the position
of the butterfly valve for max. capacity/ignition
capacity/Closed is constantly signalled back via
terminal 52.
2 4
? The display blinks and indicates
24
.
!
Faulty activation via the bus. Requirements for
“Open” and “Close” set simultaneously.
•
Ensure that “Open” and “Close” are not activated
simultaneously.
3 0
? The display blinks and indicates
30
.
!
Abnormal data change in the parameters set for
the BCU.
•
Reset the parameters to their original values using
the BCSoft software.
•
Establish the cause of the fault to avoid repeat
faults.
•
Ensure that the cables have been installed prop-
erly – see page 4 (Cable selection).
•
If the measures described above do not help,
remove the unit and return it to the manufacturer
for inspection.
3 1
? The display blinks and indicates
31
.
!
Abnormal data change in the parameters set for
the BCU.
•
Reset the parameters to their original values using
the BCSoft software.
•
Establish the cause of the fault to avoid repeat
faults.
•
Ensure that the cables have been installed prop-
erly – see page 4 (Cable selection).
•
If the measures described above do not help,
remove the unit and return it to the manufacturer
for inspection.
3 2
? The display blinks and indicates
32
.
!
Supply voltage too low or too high.
•
Operate the BCU in the specified mains voltage
range (mains v10/-15%, 50/60 Hz).
!
An internal device error occurred.
•
Remove the unit and return it to the manufacturer
for inspection.
3 3
? The display blinks and indicates
33
.
!
Faulty parameterization.
•
Check parameter settings using BCSoft.
!
An internal device error occurred.
•
Remove the unit and return it to the manufacturer
for inspection.
3 6
? The display blinks and indicates
36
.
!
An internal device error occurred.
•
Replace the power module.
•
Remove the unit and return it to the manufacturer
for inspection.
4 0
? The display blinks and indicates
40
.
!
The gas solenoid valve V1 is leaking.
•
Check the gas solenoid valve V1.
!
The gas pressure switch DGp
u
/2 for the valve
check has been set incorrectly.
•
Check the inlet pressure.
•
Set DGp
u
/2 to the correct inlet pressure.
•
Check the wiring.
!
The test pressure between V1 and V2 has not
decreased.
•
Check the installation.
!
The test period is too long.
•
Change parameter 56 (Measurement time V
p1
)
using BCSoft.
•
If the fault cannot be remedied by doing this,
remove the unit and return it to the manufacturer
for inspection.
