Reason 1: The drain hose put too high. Water could not be drained out or drained too slowly.
Solution 1: Put the drain hose in a right position according to following picture.
Reason 2: Is the drain hose blocked or pressed?
Solution 2: Clean the foreign material. Release the drain hose.
Reason 3: Is the drain hose extended too long?
Solution 3: The proper length of drain hose is less than 3m.
(The original hose plus the extended hose) . Please adjust the length of drain hose.
If the problem is not solved, please contact the after-sales personnel.