Murky water in tank
First things you need to check
Outer Reactor Tube
Power Supply Wires to the Water Repair Tube Bracket (see WRS Terminal Repair - below)
Poor electrical connection between the tubes in the white filter pitcher and the brackets that they go into.
If the error still comes up then check these
Remember this is a connection problem. Please see the attachment below on how to clean and adjust the brackets as this may help.