Multi split system outdoor units error codes

E0 Outdoor Units

Outdoor unit EEPROM parameter error

Malfunction decision conditions

PCB main chip does not receive feedback from EEPROM chip

Supposed causes

  • Installation mistake
  • PCB faulty
E2 Outdoor Units

Communication malfunction between indoor and outdoor units

Malfunction decision conditions

Indoor unit does not receive the feedback from outdoor unit during 120 seconds or outdoor unit does not receive the feedback from any one indoor unit during 180 seconds.

Supposed causes

  • Wiring mistake
  • Indoor or outdoor PCB faulty