27
DE
GB
Care
The enclosure can simply be cleaned with a damp cloth. Do not use aggressive
cleaners or cleaner’s with a scouring effect!
Legionella prevention
Do not use heated water as drinking water.
After prolonged shutdown of the device for example due holiday, the device
should be fully heated up to the maximum temperature (tap at minimum flow)
before re-using. It is recommended to flush the pipes for one minute.
5. Troubleshooting
First aid
• Check the leakage protection switch and the fuses.
• Check if any fittings or shower head are affected by the build-up of lime scale
or dirt.
• See also „Troubleshooting by users“.
Troubleshooting by users
Problem
Cause
Solution
Water heater is not heating
at all (water is flowing but the
unit is not heating - the outgo-
ing water temperature is the
same as the cold water supply)
- the digital display does NOT
light up.
No power or incorrect
wiring.
Make sure the breakers at
main electrical panel are
ON. You may have a faulty
breaker or unit may be
wired incorrectly.
Water heater is not heating
at all (water is flowing but
the unit is not heating - the
outgoing water temperature
is the same as the cold-water
supply) The digital display
DOES light up, but no temper-
ature display.
Flow rate is too low /
water pressure is too
low.
Your water heater has an
activation flow rate of ap-
proximately 2.5L/min. If your
water flow rate is less than
this level, your unit will not
activate. Increase the flow
rate or check the filter mat
inside the inlet connector.
The air bubbles in the
water heater have not
been purged out.
Make sure the breakers at
main electrical panel are
ON, turn on the unit and
open the hot water tap for
about 20s.
Flow rate is too low
Something was blocked
in the filter mat / Pipe
was blocked
Check and clean the filter
mat inside the inlet connec-
tor.
Water heater is not heating
at all. The LCD display shows
“E2”
Internal part failure
Please call for your local
service.
