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Maintenance
6005077_a – 24.02.2020
EN
6.3 Fault rectification
Possible faults are described below:
Description of the fault.
yPossible cause.
Remedy.
Fan and lighting do not work.
yNo power supply.
Check that the all-pole mains switch is connected.
Switch the mains switch on.
yThe breaker may have been tripped or is defective.
Check to see if the breaker has tripped.
If you use electric circuit breakers, turn the circuit
breaker on again.
For other types of fuse, consult a qualified electrician.
The fan does not work.
yThe device is not switched on.
Check all power levels.
D“4.2.1 Normal operation (page 19).
yThe device is connected to a window contact switch and
the window is closed.
Open the window.
yThe device is connected to a safety device. The safety
device detects a critical under-pressure.
Open a window.
Wait until the air pressure returns to normal.
The lighting does not work.
yThe device software requires a restart.
Interrupt the power supply for approx. 10 seconds.
yThe lamp has blown.
Please consult your dealer or customer services.
Smells occur during operation.
yThe filter filling is used up.
Change the filter filling.
D“6.2.2 Replacing filter filling (with recirculating and
hybrid mode)” (page 25).
Poor device performance.
yThe recirculated air filter is clogged.
Replace the filter filling of the recirculated air filter.
D“6.2.2 Replacing filter filling (with recirculating and
hybrid mode)” (page 25).
yThe hybrid filter is clogged.
Replace the filter filling of the hybrid filter.
D“6.2.2 Replacing filter filling (with recirculating and
hybrid mode)” (page 25).
yThe exhaust pipe was not properly connected or installed.
Please consult your dealer or customer services.
Control panel does not react after being touched several times.
yThe control panel is soiled.
Clean the control panel.
D“5. Cleaning” (page 23).
yThe device software requires a restart.
Interrupt the power supply for approx. 10 seconds.
Moisture in the device.
yDripping or splashing water has penetrated the device.
yLiquid (e.g. from vases, bottles on the device) has
penetrated the device.
Immediately shut off the power supply, by removing
the fuse.
Make sure that the power supply cannot be
unintentionally reconnected. For example by tasking
a person with ensuring that the fuse/breaker is not
restored/switched on.
Ensure that no more liquid can penetrate the device.
Allow the device to dry.
Have the device checked and repaired by qualified,
specialist personnel prior to using the device again.
If a fault persists:
Please consult your dealer or customer services.
27


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