Operating Instructions and Installation Instructions

OPERATION
Troubleshooting
ENGLISH
www.stiebel-eltron.com DHB-E AU| 5
6. Troubleshooting
Fault Cause Remedy
The appliance will
not start despite the
DHW valve being
fully open.
There is no voltage in the
appliance.
Check the fuses/MCBs in
your fuse box/distribution
panel.
The aerator in the tap or
the shower head is scaled
up or contaminated.
Clean and/or descale the
aerator or shower head.
The water supply has been
interrupted.
Vent the appliance and the
cold water inlet line (see
chapter "Settings / Follow-
ing an interruption to the
water supply").
Cold water flows
briefly while hot
water is being
drawn.
The air sensor detects air
in the water and the ap-
pliance's heating output is
briefly switched off.
The appliance restarts au-
tomatically after 1minute.
Required temper-
ature >45°C is not
achieved.
The appliance no longer
delivers heat. The cold
water inlet temperature is
>45°C.
Reduce the cold water inlet
temperature.
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):
No.: 000000-0000-000000
DHB-E ... AU
26�02�02�1125�