Troubleshooting; Cleaning, Care And Maintenance; Cleaning And Care - Stiebel Eltron SNU HOT Instructions De Montage Et D'utilisation

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CLEANING, CARE AND MAINTENANCE

Troubleshooting

Note
If the water boiler is on temperature setting "°C" for an
extended time or is fully disconnected from the power
supply, we recommend re-filling the DHW cylinder anew
or flushing it with clean water.
11. Troubleshooting
Problem
Cause
The system does not
The strainer in the cold
supply hot water.
water inlet pipe at the
angle valve is blocked.
The temperature limiter
has responded.
The temperature limiter
has responded.
The temperature selector
is set to "°C".
There is no power.
The LED illuminates,
The temperature control-
but the appliance does
ler is faulty.
not heat up water.
The temperature of
The temperature selector
> 95 °C is not reached.
is not set to "Max".
The LED flashes when
The water boiler was
the heat-up process
commissioned without
has been completed:
calibration.
flashing 3 x_5 seconds
OFF_flashing 3 x_5 sec-
onds OFF.
Only a small amount
The special aerator in the
of water can be drawn
draw-off tap is scaled up.
off from the tap.
The water boiler
Boiling dry is detected in
does not heat up, LED
the water boiler.
flashes rapidly.
Steam escapes from
The heater element is
the tap during heat-
scaled up.
up, the water boils.
If you cannot remedy the fault, notify your heating contractor. To
facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000).
Nr.: ...... - .... - ......
Typ: SNU 5 SL
SNU HOT
www.stiebel-eltron.com
CLEANING, CARE AND
MAINTENANCE

12. Cleaning and care

Remedy
Clean or replace the sieve,
if required. See separate
instructions for the BLANCO
HOT HD.
13. Maintenance
Remove the cause of the
fault and replace the tem-
perature controller. Reset
the temperature limiter
by briefly disconnecting
the water boiler from the
mains power supply.
Remedy the fault and
replace the temperature
controller as well as the
temperature limiter assem-
bly (safety fuses).
Switch ON the water boiler
by turning the temperature
selector.
Check the fuses/MCBs in
your fuse box.
Carry out a RESET and
Draining the water boiler
recalibrate the appliance,
see the "Commissioning"
You can drain the water boiler for maintenance work or to protect
chapter.
it from frost.
Set the temperature selec-
tor to "Max".
Calibrate the water boiler,
see chapter "Commission-
ing".
Descale or replace the spe-
cial aerator, see separate
instructions for the BLANCO
HOT HD tap.
Allow the water boiler
to cool down to < 40 °C.
Begin again with commis-
sioning.
Carry out a RESET and
recalibrate the appliance,
see the "Commissioning"
Opening the water boiler
chapter.
Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning and caring for the system.
WARNING Electrocution
Maintenance work and opening of the water boiler may
only be carried out by an authorised contractor and in
accordance with safety regulations.
WARNING Electrocution
Before any work on the water boiler, disconnect it from
the power supply.
Dismantle the water boiler for maintenance work.
CAUTION Burns
The water boiler connectors and hoses may be extremely
hot.
CAUTION Scalding
Hot water may escape when draining the water boiler.
Drain the water boiler via the connectors from the "cold
water inlet" and "boiling water outlet".
Store the dismantled system in a room free from the risk of
frost, as residual water inside the water boiler or tap can
freeze and cause damage.
CAUTION Burns
The water boiler connectors, hoses and internal parts
may be extremely hot.
SNU HOT (BLANCO HOT hot water system)|
17

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