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12. Faults, Causes, Remedy
You can remedy simple operational faults yourself with the following troubleshooting advice. For
further information, contact your specialist retailer.
Caution! All devices are equipped with a multitude of safety installations. Should a fault occur this will be
brought to your attention on the display.
In the event of a fault, do not pull the power plug so that the internal safety functions are always
able to run their course. Pull the power plug only before working on the cold device.
12.1 Fault messages on the display
1. STB triggered, check burner (Fault number 1)
Cause:
STB was triggered due to overheating
Or fuse ( F4 ) on the central unit is defective
Remedy:
¾ Replace fuse ( F 4 )
¾ If the STB was triggered, it is imperative to
contact the service technician
2. Starting phase set temperature exhaust gas not
reached (Error 2) Check burner
Cause:
The transition temperature from the starting
phase to heating mode was not reached.
Remedy:
¾ Check pellet supply (see Instruction 7.2)
¾ Check if the down pipe between burner and
screw is unobstructed
¾ Contact service technician
3. Disconnection material correction (3) Check
burner
Cause:
The automatic fuel reduction triggered a safety
shutdown
Remedy:
Contact service technician
4. Disconnection excess air (4) Check burner
Cause:
Safety shutdown, triggered through excessive air in the
combustion.
Remedy:
Contact service technician
5. Burner dirty - clean burner ( Error 25 )
Cause: The airflow measured during the burner test,
which is carried out prior to the starting phase,
was insufficient
This can be caused by the following:
Burner is dirty
Airflow sensor is dirty
Intake filter dirty
Vapour extraction hood in the vicinity and in
operation
Room too tight - required combustion air is
unable to flow into the room
Leaks on the pellet oven (door, seals )
Backpressure in chimney
Remedy:
¾ Clean burner, intake filter and airflow sensor
¾ Check to see if a vapour extraction hood is in
the vicinity and switched on
¾ Ensure the supply of required combustion air,
e.g. slightly open the window
¾ Check chimney is not obstructed
¾ Contact service technician
6. Disconnection exhaust temperature heating
mode (5)
Cause:
Exhaust temperature starts dropping severely
for an extended period despite maximum
heating output
This can be caused by the following:
No pellets available
The screw fails to turn, is jammed, the screw
motor is defective or the down pipe is
obstructed
The required combustion air cannot be
supplied to the oven, e.g. a vapour extraction
hood in the vicinity of the place of installation is
switched on.
Airflow sensor dirty or defective
Burner dirty
Intake filter dirty
Room too tight - required combustion air is
unable to flow into the room
Leaks on the pellet oven ( door, seals )
Flame temperature sensor defective
Exhaust temperature sensor defective
Remedy:
¾ Check pellet supply
¾ Check if the down pipe between pellet
tank and burner is unobstructed.
¾ Clean burner, intake filter and airflow
sensor
27


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