Operation
7
6. Troubleshooting
Problem
Cause
Remedy
The appliance will not
start despite the DHW
valve being fully open.
No power to the ap-
pliance.
Check the fuses/
MCBs in your fuse
box.
The aerator in the tap
is scaled up or dirty.
Clean and/or descale
the aerator or replace
the special aerator.
The water supply has
been interrupted.
Vent the appliance
and the cold water
inlet line (see chapter
"Settings").
If you cannot remedy the fault, notify your qualified con-
tractor. To facilitate and speed up your request, provide
the serial number from the type plate (000000-0000-
000000).
MDO ...
Model:
000000
E-Nr:
F-Nr:
0000-00000
