E-Bike - RadCity 5 Plus Ebike

4 ½ years old. Error Code 30 displaying. Possible replacement of controller required (cost to buy €170). Otherwise in great condition. Specifications: 250W Geared Hub Motor Semi-integrated, 48V, 14 Ah (672 Wh) Battery Weight 29.5 kg Min-Max Seat Height 810 - 1055 mm Standover Height 762 mm Rider Height Range 150 - 188 cm Frame Size 430 mm Integrated Rear Rack Front Suspension Fork 7-Speed Drivetrain Torque Sensor Pedal Assist Hydraulic Disk Brake Calipers Aluminium Frame Side-mounted kickstand Custom LCD display Display Readouts - Charge indicator, speedometer, odometer, trip odometer, pedal assist level, motor watts, headlight/taillight indicator, trip time, clock