Check whether the dehumidifier works properly. The small box at the back of the cabinet, on inside (analog series have the knob for setting RH there) has an opening on top. Use a finger and feel inside. If it's not noticeably cold (not just a bit cool from metal) then the unit is not working anymore. Check all cables and switches (my cat once stepped on the switch of the power distribution). If no result then the dehumidifier unit is due for exchange. Use a screwdriver to remove the 6 screws, bring the unit together with warranty card to Digi Service Center (opening times and address on warranty card) and get a new one. Mount again and done.