Test Symbols; Appliance Description; Cleaning, Care And Maintenance; Troubleshooting - STIEBEL ELTRON DHE 21 SL LABS Bedienungs Und Installationsanleitung Handbuch

opErATIoN

Appliance description

2.3

Test symbols

See type plate on the appliance
Country-specific approvals and certifications: Germany
A general test certificate as verification of suitability regarding
noise emissions has been issued for this appliance, based on the
State Building Regulations [Germany].
DIN 4109
PA-IX 6830/I
3. Appliance description
This appliance with full electronic control and output matching
keeps the outlet temperature constant. The water is heated ac-
curately by the electronic control unit with motorised valve. This
occurs regardless of the inlet temperature.
DHW temperature
The DHW outlet temperature is fixed in the appliance, see
chapter "Specification".
Heating system
The bare wire heating system has a pressure-tested copper casing.
The heating system is suitable for hard and soft water areas; it
has low susceptibility to scale build-up. This system ensures rapid
and efficient DHW availability.
Note
The appliance is equipped with an air detector that large-
ly prevents damage to the heating system. If, during op-
eration, air is drawn into the appliance, the heater shuts
down automatically for one minute, thereby protecting
the heating system.
4.

Cleaning, care and maintenance

f Never use abrasive or corrosive cleaning agents. A damp f
cloth is sufficient for cleaning the appliance.
f Check the taps regularly. Limescale deposits at the spouts f
can be removed using commercially available descaling
agents.
www.stiebel-eltron.com
5.

Troubleshooting

fault Cause
The appliance will not There is no mains volt-
start despite the DHW age.
valve being fully open.
The aerator in the tap
or the shower head is
scaled up or contami-
nated.
The water supply has
been interrupted.
Cold water flows briefly The air sensor detects air
while hot water is being in the water and briefly
drawn. switches the heater off.
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 fuse/MCB in
your fuse box/distribu-
tion panel.
Clean and/or descale the
aerator or shower head.
Vent the appliance and
the cold water inlet line
(see chapter "Commis-
sioning / Restarting").
The appliance restarts
automatically after
1 minute.
DHE 18/21/24 SL LABS
No.: 000000-0000-000000
DHE SL LABS | 21