Error 105 Model number WL80T65CW1 error 105

Try to get a Rotor position sensor as they are cheaper.
105. (01101001) Comms Error Time Out
These faults are reported when the Display Module detects an error in the communications
between the Display Module and the Motor Control Module.
Primary Source: Display Module.
Action: Replace Display Module.
Secondary Source: Motor Control Module.
Action: Replace Motor Control Module.
Tertiary Source: Rotor Position Sensor
Action: Replace Rotor position Sensor. If this corrects the fault refit the
original Display Module and/or Motor Control Module.