GB-12
D
GB
F
NL
I
E
▷
The heater may only be disconnected from the
electrical power supply once the device has been
switched off and post-cooling is complete.
Shut off the gas supply.
4
Check the cover on the burner control unit and
the housing cover to ensure they are both tightly
closed
MOD
E
RESE
T
ON/O
FF
▷
The heat exchanger can be easily accessed via
the service flap.
5
Open the service flap and carefully clean the fins
on the heat exchanger with the high-pressure
cleaner (spray setting).
MOD
E
RES
ET
ON/O
FF
> 50 cm
▷
The rubber seals between the electrodes and
electrode plugs may be displaced by the water
jet.
6
After cleaning, check that all the parts on and
in the heater are in the correct positions, for ex-
ample whether the rubber seals between the
electrodes and electrode plugs are fitted cor-
rectly.
7
Remove the air filter and check it for dirt.
8
Tap the air filter.
9
The air filter can be rinsed under running water
if it contains stubborn dirt particles.
0
Chemical cleaning agents, disinfectants and/or
pesticides contain corrosive substances which
can even corrode stainless steel. Always rinse
the devices with water after cleaning using such
agents to remove any residue of these agents
from the surface.
After cleaning, select operating mode
3
Con-
trolled air flow so that the interior of the device
can dry properly.
After cleaning the heater, check it is functioning
faultlessly in normal operation, see page 19
(Checking the safety functions and burner opera-
tion).
When operating with LPG, check and clean the
breather orifice of the pressure reducer.
Assistance in the event of
malfunction
WARNING
To avoid harm to persons and animals or damage
to the heater, please observe the following:
– Electric shocks can be fatal! Before working
on possible live components, ensure the unit
is disconnected from the power supply.
– Fault-clearance must only be undertaken by
authorized trained personnel!
– Repairs to components, e.g. the burner control
unit or the combination control, may only be
carried out by the manufacturer. Otherwise, the
warranty will be voided. Unauthorized repairs or
incorrect electrical connections, e.g. the con-
nection of power to outputs, can cause gas
valves to open and the burner control unit to
become defective. In this case, fail-safe opera-
tion can no longer be guaranteed.
– (Remote) resets may only be conducted by au-
thorized personnel with continuous monitoring
of the devices concerned.
▷
In the event of an installation fault, the burner
control unit closes the gas valves and the status
indicator light will be red at the latest after a
restart has been unsuccessful.
▷
The 7-segment display will show a fault code
in the form of a letter with a decimal point and
a number alternately indicating a warning. To-
gether with the red status indicator light, this
then constitutes a fault.
▷
Warnings and faults may be cleared only using
the remedies described below.
Internal wiring
▷
To rectify a fault, it is sometimes necessary to
check the internal wiring.
Open the housing cover of the burner control
unit.
Undo the two screws (M3) using a Phillips screw-
driver and remove the complete plastic cover
from the burner control unit.
