OpErATiON
Troubleshooting
8
| DEM AU
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6. Troubleshooting
problem
Cause
remedy
The appliance will not
start despite the DHW
valve being fully open.
No power at the appli-
ance.
Check the fuse/MCB in
your fuse box/distribu-
tion board.
The aerator in the tap is
scaled up or dirty.
Clean and/or descale the
aerator or replace the
aerator.
The water supply has
been interrupted.
Vent the appliance and
the cold water inlet line
(see chapter "Settings").
The required tempera-
ture is not being reached.
The maximum tempera-
ture set inside the appli-
ance is too low.
Have your qualified con-
tractor adjust the maxi-
mum temperature.
The appliance has
reached its output limit.
Reduce the flow rate.
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000).
DEM
. . No.: 000000-0000-000000