GB-16
D
GB
F
NL
I
E
4 1
? The display blinks and indicates
41
.
!
One of the burner-side gas solenoid valves is
leaking.
•
Check the burner-side solenoid valves.
!
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 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.
5 0
? The display blinks and indicates
50
.
!
Interruption of signal at the “Enable/Emergency
stop” input (terminal 46).
•
Check voltage supply to terminal 46.
•
Check the setting of parameter 10.
5 1
? The display blinks and indicates
51
.
!
Short-circuit on one of the outputs of the safety
circuit.
•
Check the wiring.
•
Check fine-wire fuse F1 (3.15 A, slow-acting, H).
▷
The fine-wire fuse can be replaced once the
power module has been removed.
•
Then check the faultless processing of all input
and output signals.
!
The unit has suffered an internal fault in the power
module.
•
Replace the power module.
5 2
? The display blinks and indicates
52
.
!
The BCU is permanently reset by remote reset.
•
Check voltage supply to terminal 3.
•
Apply voltage to terminal 3 only for reset, approx.
1 second.
5 3
? The display blinks and indicates
53
.
!
The time between two starts is less than the
min. time (timing cycle).
•
Comply with the min. timing cycle tz
min
:
tz
min
[s] = (t
VZ
+ 0.6 × t
SA1
) + 9
Example:
Pre-ignition time t
VZ
= 2 s
Safety time 1 t
SA1
= 3 s
tz
min
= (2 + 0.6 × 3) + 9 = 12.8 s
8 0
9 4
9 9
9 5
9 6
9 8
8 9
8 8
8 6
8 7
8 5
8 4
8 3
8 1
? The display blinks and indicates
80
,
81
,
83
,
84
,
85
,
86
,
87
,
88
,
89
,
94
,
95
,
96
,
98
or
99
.
!
System fault – the BCU has performed a safety
shut-down. The cause may be a unit defect or
abnormal EMC influence.
•
Ensure that the ignition cable has been installed
properly – see page 4 (Cable selection).
•
Ensure that the EMC regulations for the sys-
tem are satisfied – particularly for systems with
frequency converters – see page 4 (Cable
selection).
•
Reset the unit by pressing the Reset/Information
button.
•
Disconnect the burner control unit from the mains
supply and then switch it on again.
•
Check mains voltage and frequency.
•
If the measures described above do not help, the
unit has probably suffered a hardware defect –
remove the unit and return it to the manufacturer
for inspection.
9 7
? The display blinks and indicates
97
.
!
No PCC.
•
Insert compatible PCC.
!
Contact problems on the power module.
•
Remedy contact problems.
!
Power module is defective.
•
Replace power module.
