U-21
H-093630_EN • 00
I
nstructIons
for
the
u
ser
What to Do if...
Cause
Action
Appliance 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 break-
er) and reset it as required.
No water goes out of the
hot taps
The hot water circuit from
the water heater is closed
Open the hot water circuit stop valve
There is air in the water cir-
cuit
1. Make sure that the tank is filled with water
2. Bleed air from the circuit by opening a hot water tap
until water flows out
Only cold water is coming
out of the hot tap
Appliance not in operation
Check the correct operation of the appliance
Error code 133 displayed
Time out for flame ignition
1. Open controller removable panel and depress Reset
button. Refer to
“Control Panel and Main Func-
tions” on page G-12
.
2. If the fault appears several times, call your installer.
Error code 105 displayed
Maintenance message
Select and activate the Information icon ( ) for details
on the error and maintenance code.
Maintenance icon (
)
Starting the Appliance
The first start-up of the appliance after
its installation must be performed by a
qualified professional, according to the
procedure in
“Start-up and Commis-
sioning” on page I-55.
Conditions:
Procedure:
1.
Make sure that the power supply cable is
connected to the appliance.
2.
Push the On/Off switch located on the right
side of the appliance.
When in the ON position, the switch
remains pushed in and is illuminated.
Follow-on tasks:
Check the pressure of the water circuit in operation.
It should be between 0,8 and 6 bar (with pump on).
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Stopping the Appliance
Conditions:
None
Procedure:
1.
Push the On/Off switch located on the right
side of the appliance.
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
appliance, either disconnect the power sup-
ply cable from the appliance, or use the ex-
ternal circuit breaker.
Follow-on tasks:
None
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To remove an error code from the display temporarily and go back to the Home screen, de-
press the rotary selector for more than 3 seconds.
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