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6. Troubleshooting
Problem Cause
Remedy
No hot water
is available.
No power at the appliance.
Check that the appliance is con-
nected to the power supply.
A fuse/MCB in the fuse box
has blown/responded.
Check whether the fuses/MCBs
in your fuse box have blown/
responded. Contact a qualified
contractor if the fuse blows or
the MCB responds again after
the appliance is connected to the
power supply.
The air intake or air discharge
of the appliance is blocked.
Check the air intake grille and
air discharge grille for contami-
nation. Remove any contamina-
tion (see chapter "Maintenance
and care").
Outside the application lim-
its, the appliance blocks the
compressor. This could lead to
reduced DHW convenience.
No action required. The appli-
ance will then restart the com-
pressor automatically.
The DHW cylinder is not com-
pletely full.
The appliance restarts automati-
cally when the DHW cylinder has
been filled.
Due to a previous high de-
mand for hot water, the unit
has not had the chance to
fully recover.
No action required. Allow the
unit to continue operating nor-
mally until the heating cycle is
completed.
The safety pressure limiter
has responded 5 times in
5hours.
Notify a qualified contractor who
will reset the safety pressure
limiter.
A safety valve
is dripping.
These units are under water
mains pressure. During the
heat-up process, expansion
water will drip from a safety
valve.
If water continues to drip when
heating is completed, please in-
form your qualified contractor.
The conden-
sate drain
drips.
The surface temperature of
the evaporator is lower than
the dew point temperature of
the ambient air. Condensate
forms.
This is expected and no action
is required. The amount of
condensate depends on the air
humidity level.
For indoor in-
stallations the
room temper-
ature drops
too low.
Operation of the appliance can
cause the room temperature to
fall by 1 to 3°C. If the room tem-
perature falls by more than 5°C,
check the room size (see chapter
"Specification/Data table").
Increasing the room size by
opening a door to another room
will remedy this.
Notifying a qualified contractor
If you cannot remedy the fault, notify your qualified contractor. In
Australia direct notify us (1800153351). To facilitate and speed up
your request, provide the number from the type plate (000000-
0000-000000). The type plate can be found on the left, above the
DHW outlet connection.
Sample type plate
000000-0000-000000
D0000035352
1
1 Number on the type plate
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