Liebherr CUN 3033 Comfort NoFrost - Manual (Page 11)

→ SuperFrost is activated.
u The compressor runs for longer in order to rapidly cool the
food. This is normal.
A LED on the bottom rear of the appliance (at the
compressor) flashes regularly every 15 seconds*.
→ The inverter is equipped with a diagnostic LED.
u The flashing is normal.
Excessive noise.
→ Speed-controlled* compressors may produce varying
running noise due to different speed steps.
u The sound is normal.
A bubbling and gurgling noise.
→ This noise comes from the refrigerant flowing in the refriger-
ation circuit.
u The sound is normal.
A quiet clicking noise.
→ The noise is produced whenever the refrigeration unit
(motor) automatically switches on or off.
u The sound is normal.
A hum. It is briefly a little louder when the refrigeration
unit (the motor) switches on.
→ The refrigeration increases automatically when the Super-
Frost, function is activated, fresh food has just been placed
in the appliance or the door has been left open for a while.
u The sound is normal.
→ The ambient temperature is too high.
u Solution: (see 1.2)
Vibratory noise.
→ The appliance is not fixed to the ground. The running of the
cooling unit therefore makes objects and adjacent furniture
vibrate.
u Adjust appliance via the height-adjustable feet.
u Move bottles and containers apart.
The SuperFrost button flashes together with the tempera-
ture display.
→ There is a fault.
u Contact the customer service. (see Maintenance).
All LEDs light up in the temperature display.
→ Demo mode is activated.
u Please contact the after sales service. (see Maintenance).
The outside surfaces of the appliance are warm.
→ The heat of the refrigeration circuit is used to prevent
condensate from forming.
u This is normal.
The temperature is not cold enough.
→ The door of the appliance is not properly closed.
u Close the door of the appliance.
→ Insufficient ventilation.
u Clear ventilation grilles.
→ The ambient temperature is too high.
u Solution: (see 1.2) .
→ The appliance was opened too frequently or for too long.
u Wait until the appliance reaches the required temperature
itself. If not, contact the customer service. (see Mainte-
nance).
→ Too much fresh food was placed inside without SuperFrost.
u Solution: (see 5.4.3)
→ The appliance is too close to a source of heat (stove, heater
etc).
u Change the position of the appliance or the source of heat.
The interior light is not on.
→ The appliance is not switched on.
u Switch on the appliance.
→ The door was open longer than 15 min.
u The interior light automatically switches off if the door has
been open for about 15 min.
→ If the interior light is not on but the temperature display is lit,
the bulb is faulty.
u Change the bulb. (see Maintenance).
With an ambient temperature below 18 °C the device is
slightly warmed in places on the inner surface of the
fridge compartment's left side wall.
→ This is a necessary part of the function.
u This is normal.
8 Decommissioning
8.1 Switching off the appliance
u Using a coin, turn the temperature control Fig. 3 (1) to 0.
w The temperature display is dark.
8.2 Taking the appliance out of service
u Empty the appliance.
u Pull out the power plug.
u Clean the appliance (see 6.2) .
u Leave the door open to prevent odour.
9 Disposing of the appliance
The appliance contains some reusable materials
and should be disposed of properly - not simply
with unsorted household refuse. Appliances which
are no longer needed must be disposed of in a
professional and appropriate way, in accordance
with the current local regulations and laws.
When disposing of the appliance, ensure that the refrigeration
circuit is not damaged to prevent uncontrolled escape of the
refrigerant it contains (data on type plate) and oil.
u Disable the appliance.
u Pull out the plug.
u Cut through the connecting cable.
Decommissioning
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