Maintenance
6.3
Fault rectification
Possible faults are described below:
Description of the fault.
Possible cause.
Remedy.
Fan and lighting do not work.
No power supply.
Check that the mains cable is connected on both
sides.
The 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.
The device is not switched on.
Check all power levels.
"4.3 Normal operation" (page 140).
The device is connected to a window contact switch and
the window is closed.
Open the window.
The device is connected to an under-pressure monitor.
The under-pressure monitor detects a critical under-
pressure.
Open a window.
Wait until the air pressure returns to normal.
The lighting does not work.
The lamp has blown.
Please consult your dealer or customer services.
Smells occur during operation.
The filter filling is used up.
Change the filter filling.
"6.2.2 Replacing filter filling (with recirculating and
hybrid mode)" (page 145).
Poor device performance.
The recirculated air filter is clogged.
Replace the filter filling of the recirculated air filter.
"6.2.2 Replacing filter filling (with recirculating and
hybrid mode)" (page 145).
The hybrid filter is clogged.
Replace the filter filling of the hybrid filter.
"6.2.2 Replacing filter filling (with recirculating and
hybrid mode)" (page 145).
The exhaust pipe was not properly connected or installed.
Please consult your dealer or customer services.
6003396_a – 27.03.2017
Control panel does not react after being touched several times.
The control panel is soiled.
Clean the control panel.
"5. Cleaning" (page 143).
The device software requires a restart.
Briefly disconnect the mains power supply.
Moisture in the device.
Dripping or splashing water has penetrated the device.
Liquid (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.
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