GB-17
D
GB
NL
RUS
PL
F
E
UA
CN
? Error 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 not working.
•
Check the relay and replace it if necessary.
!
Main fan defective.
•
If possible, remove the main fan and replace it.
? Error 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
.
? Error code
A.
and
9
flash alternately and the
light is red?
The main fan continues to operate after the de-
vice has been switched off.
!
Wiring fault.
•
Check the wiring to actuate the main fan, see
page 4 (Wiring).
!
The pressure switch does not switch.
•
Check the air hose on the pressure switch for
dirt and moisture and clean it.
!
The main fan is switched off but the pressure
switch signal does not drop.
•
Check the pressure switch and replace it if nec-
essary.
!
The relay to actuate the main fan is defective.
•
Replace the relay.
? Error code
C.
and
1
flash alternately and the
light is red after 5 minutes where applica-
ble?
Monitor temperature threshold (STM) of the safety
temperature sensor has been exceeded.
!
Temperature has been exceeded.
•
Leave heater to cool down for longer.
!
The main fan does not switch on.
•
Check the main fan.
!
Wiring fault.
•
Check the wiring to actuate the main fan, see
page 4 (Wiring).
!
Safety temperature sensor is incorrectly aligned.
•
Check the position of the safety temperature
sensor.
!
Ambient temperature exceeded.
•
The temperature is > 40°C. Allow the room to
cool.
!
The safety temperature sensor is measuring an
incorrect temperature.
•
Replace the safety temperature sensor.
!
The heater is badly soiled.
•
The heater must be cleaned urgently.
!
Installation position.
•
The heater is too close to other heaters, see
page 2 (Installation).
!
Incorrect λ or O
2
value.
•
The heater is not set correctly and must be ad-
justed, see page 10 (Adjusting the heater).
!
In the event of a power failure during operation,
the heater will be switched off without a cool-
ing phase. In the event of a brief power failure
(< 5 minutes), the heat exchanger will heat the
device excessively.
•
Once the voltage supply has been restored, Con-
trolled air flow mode is activated. The heater is
cooled for a maximum of 1 minute.
? Error code
C.
and
2
flash alternately and the
light is red?
Limiter temperature threshold (STL) of the safety
temperature sensor has been exceeded.
!
The cause of the fault as described above for
warning
C.1
could not be rectified.
•
Check the heater for damage, see page 20
(Visual inspection).
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