Keystone Dehumidifiers - Recent Questions, Troubleshooting & Support

it is inside the water bucket

There's usually a float that senses the level of the water so it shuts the unit off. Perhaps the float arm got bent at some time. I would try to re-position ( lower) the float arm, to adjust the water level.

this happens when the drain tube becomes blocked so unit overflows and water falls into bucket and not flows out tube , clean tube and drain port with compressed air (wear eye protection!!!)

The filter in your Keystone KSTAD70B is meant to be washed. It is not listed as a replacement part in the owners manual. This is copied from the manual: 3. Clean the air filter Remove the filter every two weeks based on normal operating conditions. Remove the filter from the top of the unit (See.Fig.11a), or to remove the filter,remove Bucket then pull filter downwards (See.Fig.11b). Wash the filter with clean water then dry. Re-install the filter,replace Bucket. CAUTION: DO NOT operate the dehumidifier without a filter because dirt and lint will clog it and reduce performance. If you have lost or destroyed the filter, go to Amazon and order the Duck Brand 1285234 Replacement Air Conditioner Foam Filter, 24-Inch by 15-Inch by 1/4-Inch, 1-Pack for 96 cents with free shipping as an add-on item to any order. It is also washable so you will be able to use it like the OEM filter material.