ASKO Dryer Error Code Overfull

The Overfull error means the condensation water collection system has reached capacity and the dryer has stopped to prevent overflow. On the T780 model, this typically points to a full condensation water tank. It can also indicate that the bottom water container has backed up due to a blocked pump or restricted hose preventing proper drainage.

Restarting the dryer after emptying the condensation tank will clear the error if a full tank was the only cause. However, if the underlying issue is a blocked pump or hose, the error will reappear once water backs up again. A reset alone without addressing the drainage problem is only a temporary measure.

If the fix is simply emptying the condensation tank, there is no cost involved. Clearing a blocked pump or hose yourself also costs nothing beyond your time. If the pump has failed and needs replacement, expect to pay somewhere in the range of $80 to $200 or more for the part, plus labor costs if you hire a technician.

Start by removing and emptying the condensation water tank, then restart the dryer. If the error does not return, routine emptying of the tank after each cycle will prevent recurrence. If the error comes back quickly, inspect the pump and all connected hoses for blockages, kinks, or disconnections, and clear any obstructions you find.

No, you should not continue operating the dryer while the Overfull error is active. The dryer stops automatically to prevent water from overflowing inside the cabinet, which could cause water damage or create an electrical hazard. Resolve the tank or drainage issue before resuming use.