• Code: 54.XX
• Display: 54.XX Error
• Description: The product has experienced a density sensor error.
• Remedy: at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

• Code: 55.X
• Display: 55.X Error
• Description: The product has experienced a DC controller memory error.
• Remedy: Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

• Code: 57
• Display: 57 Fan error
• Description: The product has experienced a problem with its internal fan.
• Remedy: Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

• Code: 59.20
• Display: 59.X Error
• Description: The product has experienced a problem with one of the motors.
  Main motor is defective (start-up failure)
• Remedy: Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on. If the problem is not solved, follow these steps. 1. Reconnect the connectors of the main motor (J701) and DC controller PCA (J121). 2. If the problem persists, replace the main motor.

• Code: 59.30
• Display: 59.X Error
• Description: The product has experienced a problem with one of the motors.
  Main motor is defective (rotational failure)
• Remedy: Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on. If the problem is not solved, follow these steps. 1. Reconnect the connectors of the main motor (J701) and DC controller PCA (J121). 2. If the problem persists, replace the main motor.

• Code: 79
• Display: 79 Error
• Description: The product has experienced an internal firmware error.
• Remedy: Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

• Code: 79
• Display: 79 Service error
• Description: An incompatible DIMM is installed.
• Remedy: 1. Turn the product power off. 2. Install a DIMM that the product supports. 3. Turn the product on.