I have an LG model LHD65EBL dehumidifier. The humidistat will not change from 70 when I push either + or -. The fan runs well and the compressor sounds like it is running well Some water comes out when the ambient humidity is above 70. It is in a basement room that is quite humid. It indicates 75. Then it runs and shuts off at 70.

Prt of the problem may be a dirty or clogged air intake filter.

Turn the unit OFF and unplug, it before removing the filter to check and clean it.
You can ether vacuum it or if it's really dirty & clogged, wash it in warm water and mild dish washing liquid. Rinse thoroughly, shake off access water and allow it to dry completely, before reinstalling it.
Never operate the unit without the filter in place. As this could damage the unit.

Plug the unit back in and turn it ON. Try lowering the humidity extraction level now, using the arrow down button. For a very damp, humid basement application 35% is a good setting to start with for several days.

Hope this helped you and thanks for choosing FixYa.