Dantherm CDF 40 Service Manual page 23

Maintenance and care: Trouble shooting
Unlock Sequence
Loc
Follow the steps below in order to unlock the unit.
Step Action
1
2
3
!
If the dehumidifier is not functioning correctly, shut it down immediately!
NOTICE
Fault finding
Use this table to localize and solve a possible problem or fault:
Led Audible alarm
OFF
RED
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.
The message indicates that the unit is locked. If no buttons are pressed within 5
seconds the display will return to previous fail state.
Description
UnLo
(unlock function) is displayed
tESt
OK
(test function) is displayed
test is activated. The test will detect if the error is fixed.
OK
cccc
indicates that the error has been fixed and the unit is un-
locked successfully.
faIL
indicates that the error is NOT fixed yet and the unit will
still be locked.
Problem
-
-
230V connected
but no function
-
-
HP fault - Can't
3 sec. Initiating
turn on /shuts
beep
down
LP fault - Can't
Double beep
turn on /shuts
every 1 min.
down
Single short beep Sensor fail -
every 5 min. check display
Possible cause(s) Solution
Power outlet in wall is Restore the power
disconnected (Electrical)
Fuse F1 on main PCB
Replace the fuse
are blown
Defective power sup-
Replace main PCB
ply on main PCB
Disconnected/loose Check 230V connec-
230V connection tions according to
inside the unit wiring diagram
Defective fan Replace fan
Dirty filter Clean the filter
Dirty condenser coil Clean coil
Find leak and repair
Leaking refrigerant
leak + refill refrigerant
Malfunction of Replace thermostatic
thermostatic valve valve
Insufficient
Refill refrigerant
refrigerant
Defective sensor Replace sensor
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