GB-15
D
GB
F
NL
I
E
? Fault code
A.
and
4
flash alternately and the
light is red?
Burner fan continues to operate when the burner
control unit is in idle state.
!
Wiring fault.
•
Check whether the wiring from plug X21 to the
burner fan has continuity.
!
A vacuum is generated in the chimney due to
strong wind and this affects the burner fan.
? Fault code
A.
and
5
flash alternately?
The burner fan does not reach the required speed
when starting up.
!
The air route is blocked.
•
Check the air supply route.
!
This air filter is not OK.
•
Check the air filter and clean it if necessary, see
!
Fan motor defective.
•
Check motor.
!
Wiring fault.
•
Check wiring (plugs X21 and X12).
? Fault code
A.
and
5
flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷
Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
•
Rectify the cause of the fault as described above
for warning
F.5
.
•
Check the air filter and replace it if necessary.
? Fault code
A.
and
6
flash alternately?
The burner fan does not reach the required speed
during operation.
!
The air route is blocked.
•
Check the air supply route.
!
This air filter is not OK.
•
Check the air filter and clean it if necessary, see
!
Fan motor defective.
•
Check motor.
!
Wiring fault.
•
Check wiring (plugs X21 and X12).
? Fault code
A.
and
7
flash alternately?
!
The air filter is becoming blocked and must be
cleaned shortly.
•
Check the air filter and clean it if necessary, see
? Fault code
A.
and
8
flash alternately?
The main fan does not start during the start-up
attempts.
!
The pressure switch does not switch.
•
Check the air hose on the pressure switch for
dirt and moisture and clean it.
•
Check the pressure switch and replace it if nec-
essary.
!
The main fan is rotating in the wrong direction.
•
Check the wiring. The rotating field may be incor-
rect. Swap L1 and L2, see page 4 (Wiring).
!
Main fan defective.
•
If possible, remove the main fan and replace it.
? Fault code
A.
and
8
flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷
Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
•
Rectify the cause of the fault as described above
for warning
A.8
.