GB-14
D
GB
NL
RUS
PL
F
E
UA
CN
?
Error code
A.
and
3
flash alternately?
!
The vane switch has not switched on 15 s after
the fan has been switched on.
•
Vane, fan or grille are dirty. Clean, see page 18
•
Fuse F1 defective (8 A, slow-acting, H). Check
the function of the fan and replace fuse F1 if
necessary.
!
Motor defective.
•
Remove the device and return it to the supplier.
?
Error code
A.
and
3
flash alternately and the
light is red?
!
The fault could not be rectified. The programmed
number of start-up attempts having failed, the
ACU initiates a fault lock-out.
•
Reset using the RESET button on the ACU or
via the remote reset.
•
Check that the vane switch is functional. Clean
the vane, fan or grille if soiled.
?
Error code
F.
and
1
flash alternately?
!
On burner start-up, the ACU has not detected
a flame during the safety time. In the parameter
“Number of start-up attempts”, it is possible to
program up to three start-up attempts. If one
of the further start-up attempts is successful,
warning signalling stops automatically once the
post-purge time has elapsed.
!
Ignition is not working properly.
•
Clean the spark electrode and check for correct
distance, see page 18 (Maintenance).
•
Check the connection of the ignition cables for
damage or moisture.
▷
The spark plug must be fitted correctly.
•
Check the ignition spark optically and acoustically
from the fan side during the 4-second ignition
time.
!
Poor flame signal due to incorrect burner adjust-
ment.
•
Readjust gas pressure p
G
, see page 8 (Ad-
!
Poor flame signal due to dirty/badly connected
flame rod.
•
Clean the flame rod and check for correct dis-
tance, see page 18 (Maintenance).
•
Check the cable connection, cable and terminal
boot for damage or moisture. The terminal boot
must be fitted correctly.
•
Check the yellow and green burner ground cable
for corrosion and to ensure it is firmly connected.
!
Air in the gas pipe.
•
Vent the gas pipe.
!
Valves do not open.
•
Remove the valve plug on the combination con-
trol CG and measure the voltage between L1
and N during the safety time. If the voltage is
not adequate, first replace the CG and return it
to the supplier.
Attention!
Only commission the new ACU once
the short-circuit or fault on the valve output of
the CG has been remedied. Otherwise, the new
ACU will be damaged.
•
If the fault continues to be signalled, there may
be a short-circuit on the valve output. Return
the burner control unit to the manufacturer for
inspection.
!
Short-circuit on ignition output.
•
Replace fine-wire fuse F2 (3.15 A, slow-acting,
H) and check the safety function, see page 20
(Checking the safety functions and burner opera-
tion).
?
Error code
F.
and
1
flash alternately and the
light is red?
!
The fault could not be rectified. The programmed
number of start-up attempts having failed, the
ACU initiates a fault lock-out.
•
Reset using the RESET button on the ACU or
via the remote reset.
•
Rectify the cause of the fault as described for
warning
F.1
.
?
Error code
F.
and
2
flash alternately?
!
The flame has gone out during operation. If a
restart has been programmed, an automatic re-
start is carried out provided that the burner has
been in operation for at least 2 s beforehand.
•
Poor flame signal due to incorrect burner adjust-
ment. Readjust gas pressure p
G
, see page 8
•
Poor flame signal due to dirty or badly connected
flame rod. Clean the flame rod and check for
correct distance, see page 18 (Maintenance).
•
Check the cable connection for damage or mois-
ture. The terminal boot must be fitted correctly.
