U-21
B-070343_EN • B
I
nstructIons
for
the
u
ser
What to Do if...
Cause
Action
Boiler does not start
No power supply
1. Check that the power button is in ON position
(pushed in and illuminated).
2. Make sure the power supply is connected to the
mains.
3. Check the external power supply box (circuit breaker)
and reset it as required.
Error code 133 displayed
Time out for flame ignition
1. Press Reset button (
)
.
2. If the fault appears several times, call your installer.
Error code 111 displayed
Temperature limit switch
open
Check that radiator valves are open/that there is flow
across the boiler.
Error code 105 displayed
Maintenance message
Press information button ( ) for detailed information. For
an explanation of the maintenance modes, see
“Main-
tenance Messages” on page I-75.
Maintenance icon (
)
Error code 118 displayed
Low water pressure
Refill the heating system.
Starting the Appliance
The first start-up of the boiler after its
installation must be performed by a
qualified professional, according to the
procedure in
“Start-up and Combus-
tion Adjustments” on page I-53.
Conditions:
Procedure:
1.
Make sure that the power supply cable is
connected to the boiler.
2.
Push in the On/Off switch located on the
right side of the boiler.
When in the ON position, the switch
remains pushed in and is illuminated.
3.
Select the heating mode as required.
4.
Activate the DHW mode as required.
Follow-on Task(s):
Check the pressure of the circuit in operation. It
should be between 1.2 and 6 bar (with pump on).
i
i
Stopping the Appliance
Conditions:
None
Procedure:
1.
Push the On/Off switch located on the right
side of the boiler.
When in the OFF position, the switch
is released from its pushed in position.
Its built-in light goes off and the button
comes flush with the outer frame.
2.
To completely cut the power supply to the
boiler, either disconnect the power supply
cable from the boiler, or use the external cir-
cuit breaker.
Follow-on Task(s):
None
i
