GB-12
D
GB
F
NL
I
E
?
LEDs and 4 flash.*
OFF
AUTO
+AUTO
1
2
3
4
5
!
A signal is applied for longer than 10 s to the
remote reset input (terminals 31 and 32) (per-
manent remote reset).
•
Remote reset must only be used to reset the
device.
?
LEDs and flash.
OFF
AUTO
+AUTO
1
2
3
4
5
!
The flame has not gone out within 5 s of the
burner being switched off. The gas valve does
not close correctly.
•
Shut off the gas supply to the device. Check
the burner and gas valves for correct function,
see page 14 (Checking the safety functions and
burner operation).
?
LEDs and flash.*
OFF
AUTO
+AUTO
1
2
3
4
5
!
The power supply has suffered a fault.
•
Ensure there is sufficient mains voltage, see
?
LEDs , 4 and 5 flash.
OFF
AUTO
+AUTO
1
2
3
4
5
!
While a fault was pending, more than 5 attempts
were made within 15 minutes to reset the de-
vice using the remote reset input (terminals 31
and 32).
•
Reset is only possible using the reset button on
the BCU.
Maintenance
CAUTION
To ensure that no damage occurs during operation
and maintenance, please observe the following
instructions. Otherwise, injuries or damage to the
device may occur and/or the function of the device
may be impaired. The supplier/manufacturer cannot
accept liability for damage resulting thereof.
– Have the heater cleaned at least once a year
by qualified maintenance personnel.
– Have the safety functions checked at least once
a year by qualified maintenance personnel, see
page 14 (Checking the safety functions and
burner operation).
– Sharp-edged metal sheets. Always wear protec-
tive gloves.
– After cleaning or repair work, check that the
components on and in the heater are in good
condition. The device may only be restarted
if all safety devices have been installed and
the safety functions have been checked, see
page 14 (Checking the safety functions and
burner operation).
Switch off the burner control unit BCU.
Disconnect the system from the electrical power
supply. The mains plug may only be pulled out
once the device has been switched off and post-
cooling is complete.
Shut off the gas supply.
▷
To facilitate cleaning of the components inside the
housing, the maintenance cover on the casing
can be opened
.
Z
I
4
5
10
9
11
7
6
8
I = Ionization electrode
Z = Ignition electrode
Z
I
4
5
10
9
11
7
6
8
