I have a Polar Wind Dehumidifier MDB-65AE. I connected a hose to a connector inside the hole at the back of the unit, but the bucket still gets full.

SOURCE: LG LHD45EL Dehumidifier

Push through the membrane with the drain connector. The membrane has a circular cut almost all the way through it, and pushing at it with the drain connector will pop out the little hole. I've done it with four LG units.

SOURCE: Connector hose inside dehumidifier leaks

let me know if you still have this

SOURCE: goldstar dehumidifier

The hose connector does not drain the bucket, it drains the condensate before it enters the bucket. Tube passes through back of dehumidifier by the cord wrap area. (you may have to remove a small cover)

SOURCE: Dehumidifier won't drain

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SOURCE: 50 pt. dehumidifier will not

Nothing worked, because the drain hole to the hose connection is clogged or the hose is clogged. When that happens, water is diverted to the bucket.

Turn the Master ON/OFF Switch to OFF & Unplug the unit.

Remove the hose and check it for clogs. If none are found, the clog is inside the hose connector.

Using an 18" long plastic Zip Tie appropriately sized to fit the hole. Carefully insert the tip of the Zip Tie and continue to push it in, until you reach a bend in the tubing. You will have to gingerly work the Zip Tie past the bend, until it bottoms out or you run out of usable Zip Tie. Then slowly remove the Zip Tie while rotating (twisting) it. This will break up any clogs. As you reach the inserted end of the Zip Tie, be prepared as some water that might follow. Even if you don't see any residue from a clog, it may have been pushed out of the way. Reinstall everything, plug the unit in, turn the Master ON/OFF Switch to ON and take it for a test drive.

Be sure the hose is no longer than 5 feet and that it gradually slopes down and away from the unit. The water drainage relies entirely on gravity.

Hope this helped you troubleshoot and solve the problem.