Krom Schroder BCU 46 Series Operating Instructions Manual page 20

5 3
? The display blinks and indicates
! The time between two starts is less than the
min. time (timing cycle).
• Comply with max. number of start-ups (n) per
minute:
t Device type
SA
[s] Ignition transformer ID number
3
BCU..Q1
5
34340581
10
3
BCU..Q2
5
34340582
10
3
BCU..Q3
5
34340583
10
3
BCU..Q8
5
34340584
10
? The display blinks and indicates
! Faulty feedback signal of the control element
position for ignition capacity.
• Check wiring from central actuator to BCU (ter-
minal 39).
• Check whether parameter I072 = 13 (LDS ignition
position check) and A089 = 2.
E
? The display blinks and indicates
! Faulty actuation of the input for high tempera-
ture operation. The BCU is prompted to go into
menox mode, even though there is no signal for
high temperature operation (> 750°C).
• Check the wiring.
E
? The display blinks and indicates
! Burner 1 flame amplifier is defective.
• Remove the unit and return it to the manufacturer
for inspection.
E
? The display blinks and indicates
! Burner 2 flame amplifier is defective.
• Remove the unit and return it to the manufacturer
for inspection.
53 .
Max.
number
[n/min.]
6
BCU..W1
6
34340585
3
3
BCU..W2
2
34340586
1
6
BCU..W3
4
34340587
2
4
BCU..W8
3
34340588
2
5 4
54 .
5 7
E 57 .
8 0
E 80 .
8 5
E 85 .
E
E 8 9
E 9 7 E
? The display indicates
E 97 , E 98 or
! 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 5 (Cable selection and
installation).
• Ensure that the EMC regulations for the sys-
tem are satisfied – particularly for systems with
frequency converters – see page 5 (Cable
selection and installation).
• Reset the unit.
• 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.
? The display blinks and indicates
! Flame amplifier is defective.
• Check the wiring.
! Fuses defective.
• Replace the fuses.
• If the measure described above does not help,
the unit has probably suffered a hardware de-
fect – remove the unit and return it to the manu-
facturer for inspection.
? The display blinks and indicates
! DC voltage is supplied to the inputs.
! The signal inputs and L are supplied with different
phases of a three-phase current system.
• Check the wiring and ensure that the device and
the inputs are supplied with the same phase.
? The display blinks and indicates
! The inputs are supplied with different phases of
a three-phase current system.
GB-20
9 4 E 9 5 E
9 8 E 9 9
, ,
E 89 E 94 E 95
E 99 .
E 9 1
E 91
E 9 2
E 92
E 9 4
E 94
9 6
, ,
E 96
.
.
.