What error code means the mesh filter is clogged, and how do I clean it?

Error code '4C' appears when the mesh filter of the water hose is clogged. To clean it, turn off and unplug the machine, close the water tap, disconnect the water hose, pull out the mesh filter with pliers, submerge it in water, then dry it completely in the shade before reinserting. The mesh filter should be cleaned once or twice a year. (Page 38)