GB-18
D
GB
F
NL
I
E
!
Short-circuit or discontinuity on the flame signal
cable.
!
Soiled UV sensor.
•
Remedy fault.
1 0
E
? The display blinks and indicates
E 10
.
!
Actuation of the remote reset input is faulty.
!
Too many remote resets. More than 5 resets
have been conducted within the last 15 minutes,
either automatically or manually.
!
Consecutive fault caused by a previous fault
whose actual cause has not been remedied.
•
Pay attention to previous fault messages.
•
Remedy cause.
▷
The cause will not be remedied by performing a
reset every time a fault lock-out occurs.
•
Check whether remote reset complies with
standards (EN 746 allows resetting only under
supervision) and correct if necessary.
▷
The BCU may only be reset manually under su-
pervision.
•
Press the Reset/Information button on the BCU.
1 1
E
? The display blinks and indicates
E 11
.
!
Too many restarts for burner 1. More than 5 re-
starts initiated within the last 15 minutes.
•
Check burner settings.
▷
Ensure that the flame signal is above the switch-
off threshold during operation.
•
Check the settings for capacity control during
operation.
•
Press the Reset/Information button on the BCU.
1 2
E
? The display blinks and indicates
E 12
.
!
Too many restarts for burner 2. More than 5 re-
starts initiated within the last 15 minutes.
•
Check burner settings.
▷
Ensure that the flame signal is above the switch-
off threshold during operation.
•
Check the settings for capacity control during
operation.
•
Press the Reset/Information button on the BCU.
2 1
E
? The display blinks and indicates
E 21
.
!
Inputs 40 and 41 are activated simultaneously.
•
Check input 41.
▷
Input 41 may only be activated if the valve is
open.
•
Check input 40.
▷
Input 40 may only be activated if the valve is in
the position for ignition capacity.
2 2
E
? The display blinks and indicates
E 22
.
!
The butterfly valve position is not constantly sig-
nalled back to the BCU.
•
Check the wiring and ensure that the position for
max. capacity/ignition capacity of the butterfly
valve is constantly signalled back via terminals
41 and 42.
3 0
E
? The display blinks and indicates
E 30
,
E 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 5 (Cable selection and instal-
lation).
•
If the measures described above do not help,
remove the unit and return it to the manufacturer
for inspection.
3 2
E
? The display blinks and indicates
E 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
E
? The display blinks and indicates
E 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 1
E