40
Symptom
Cause
Remedy
Actual humidity much higher
than the reference value.
The actual humidity is higher
than the set reference air hu-
midity.
Let unit running as air purifier.
Fan does not run
Humidification mode “Humidi-
fication” selected. Ambient hu-
midity is higher than selected
reference value.
None. Unit is working prop-
erly.
Unit is in program mode. The
currently active program sets
the fan step to “0”.
None. Unit is working prop-
erly.
Fan defective.
Replace fan.
Base tub and rotary humidifi-
cation drum/centrifuge have
heavy slime accumulation.
Silver coating on the water ioni-
sation electrodes is worn.
Have a service technician of
your Defensor supplier replace
the water ionisation elec-
trodes.
Displayed actual humidity
is 99 %
Integrated humidity sensor not
correctly connected
Check the connections of the
sensor cable at the humid-
ity sensor and on the control
board.
Humidity sensor defective
Replace humidity sensor.
Summary of Contents for Defensor H15A
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