As mentioned both problems are the same.
Serial communication error Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly. Potential Causes
• Check Wire Harness connections to the MCU, the motor, and Central Control Unit (CCU)
• Check the Drive system for any worn or failed components
• Check MCU
• Check CCU
• Check Motor
• Check Wire Harness
Replace failed component.
Basically the problem you have here is the machine is having a communication issue between the main control (top of the machine) and motor control (bottom of the machine)
Try unplugging all the wires from the main control and the motor control, re seat the wires, it may be that the wires came loose.
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