Inlet Temperature Information; Following An Interruption To The Water Supply; Cleaning, Care And Maintenance; Troubleshooting - STIEBEL ELTRON DEL 18 SL Operation And Installation

OPERATION

Cleaning, care and maintenance

4.3 Inlet temperature information

If the inlet temperature is higher than the preferred
temperature, e.g. if water has been preheated by solar
energy, the display alternates between showing "hot"
and the measured inlet temperature. The LED scalding
risk indicator also flashes.
Recommended setting for operation with a thermostatic
valve and water preheated by solar energy
Set the temperature at the appliance to the max.
temperature.

4.4 Following an interruption to the water supply

Material losses
!
Following an interruption of the water supply the
appliance must be recommissioned by carrying out
the following steps, in order to prevent the
destruction of the bare wire heating system.
Disconnect the appliance from the power supply
by removing the fuses/tripping the MCBs.
Open the tap for one minute until the appliance
and its upstream cold water inlet line are free
of air.
Switch the mains power back ON again.
5. Cleaning, care and maintenance
Never use abrasive or corrosive cleaning agents. A
damp cloth is sufficient for cleaning the appliance.
Check the taps/valves regularly. Limescale deposits
at the spouts can be removed using commercially
available descaling agents.
26 | DEL SL electronic LCD

6. Troubleshooting

Fault Cause
The appliance will There is no voltage in the
not start despite the appliance.
DHW valve being
fully open.
The aerator in the tap or
the shower head is scaled
up or contaminated.
The water supply has been
interrupted.
Cold water flows The air sensor detects air
briefly while hot in the water and the ap -
water is being pliance's heating output is
drawn. briefly switched off.
The temperature at The child-proofing Tmax is
the appliance cannot enabled.
be set to > 43 °C
The anti-scalding protec -
tion in the appliance is
enabled.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000):
Remedy
Check the fuses/MCBs in
your fuse box.
Clean and/or descale the
aerator or shower head.
Vent the appliance and the
cold water inlet line (see
chapter "Settings / Following
an interruption to the water
supply").
The appliance restarts
automatically after 1 minute.
Disable the child-proofing
(see chapter "Appliance
description")
Your qualified contractor
can disable the anti-scald -
ing protection for you.
DEL ... SL
No.: 000000-0000-000000
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