• Code: D501
• Description: FLASH error
• Causes: Controller board (CTLB)
• Remedy: 1 Turn OFF/ON the main power switch. 2 If the above actions do not solve the problem, replace CTLB.

• Code: E301...E305
• Description: Error signal reception
  Received an error of irregularity.
• Causes:
• Remedy: 1 Turn OFF/ON the main power switch. 2 If the above actions do not solve the problem, contact KM.