Fault Finding Guide - Dantherm CDF 35 Service Manual

Fault finding guide

Important! If the dehumidifier is not functioning correctly, shut it down immediately!
Fault finding Use this table to localize and solve a possible problem or fault:
More help If you cannot find the reason for the fault, switch off the unit immediately in order to
prevent further damage.
Contact a service technician or a Dantherm representative.
20
Fault
-
 The dehumidifier
does not work
 No light in the
LEDs on the dis-
play
The compressor has
 The compressor
stopped automati-
does not work
cally caused by a too
 The triangle is
high temperature on
constantly red
the condenser
The room tempera-
 The dehumidifier
ture is lower than
does not work
3 °C and the dehu-
 The thermome-
midifier has been
ter LED on the
switched off auto-
display is lit in
matically
red
-
 The dehumidifier
does not work
 The lighting on
the display is
green
Possible cause
 Check the external fuses
 Check the power supply to the unit
If the unit does not start again after 45
minutes, check the following:
 Check that the fan(s) is running
 Check if the filter (CDF-T: in the duct
kit) is dirty
 Check if the evaporator and the con-
denser coil is dirty
 Check if the room temperature is
higher than 30 °C. If the room tem-
perature is higher than 30 °C, the unit
must be stopped
 Check that the front cover panel
(CDF)/duct openings (CDF-T) are not
covered
Wait till the temperature has increased to
more than 3 °C
Check the built-in or the external hygro-
stat, if any, by setting it to a low relative
humidity, e.g. 10 – 20 %RH.
If the unit still does not start, check the
built-in or external hygrostat for defects
Solution