Dantherm CDP 85 - Fault Finding Guide; Fault Finding

Fault nding guide: Fault nding
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Fault nding guide
If you cannot nd the reason for the fault, switch o the unit immediately in order to prevent
further damage. Contact a service technician or a representative from the manufacturer.
More help
Display text Type Fault Unit behaviour Possible cause Fault nding Solution(s) No text - - Unit not operating /
non responsive
Power supply interrupt- ed 12VDC power supply malfunction Controller malfunction
- Check fuses in main switch- board - Verify that supply voltage is present at input terminals - Verify 12VDC output from PSU
Replace / re-connect supply fuse(s) Replace 12VDC PSU Replace controller
No text - - Display dark or white
with no text or graphic Dehumidier operat- ing normally
Display malfunction Restart controller Replace controller
- - No fault Excessive fan noise Inlet/outlet clogged
Excessive back pressure
Verify if lter is clogged Verify if inlet/outlet has been restrained Verify dampers are open (if installed) Verify back pressure is within specied limits
Unresrict air inlet / outlet
Low Temp. Info No fault Unit in standby Ambient temperature at
RH sensor is too low
-Check actual ambient tem- perature -Read measured ambient temperature in ‘live data’ menu view
Unit will restart when ambient temperature is within operating limits
High Temp Ambient temperature at
RH sensor is too high
C. Sensor E. Sensor RH Sensor
Alarm Sensor
failure
Sensor failure can result in irregular behavior, LP Error or HP Error
Sensor malfunction Read sensor value in ‘live data’
view Verify temperature sensor resistance (ohm)* Verify sensor wire integrity
Replace sensor
Use this table to localize and solve a possible problem or fault:Fault nding
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