• E1 –  Remote control communication error
  • E2 –  Duplicate indoor unit address
  • E3 –  Outdoor unit signal line error
  • E5 –  Communication error during operation
  • E6 –  Internal heat exchanger temperature thermistor abnormality (Thi-R)
  • E7 –  Internal return air temperature thermistor abnormality (Thi-A)
  • E9 –  Unloading problem
  • E10 – Excessive number of indoor units with remote control
  • E12 –  Address setting error with mixed setting method
  • E16 – Internal fan motor abnormality (FDT series)
  • E16 – Internal fan motor abnormality (FDK series)
  • E19 –  Indoor unit operation control unload motor control mode abnormality
  • E28 –  Remote control temperature thermistor abnormality (ThC)
  • E30 – Incompatible connection of indoor and outdoor unit
  • E31 – Replicated outdoor unit address no.
  • E32 – Open L3 phase in the primary side power supply
  • E36 – Drain pipe temperature error (Tho-D1, D2)
  • E36 – Liquid overflow abnormality
  • E37 – Abnormalities of external heat exchanger temperature thermistor (Tho-R) and sub-cooling coil temperature thermistor (Tho-SC, -H)
  • E38 – Outdoor temperature thermistor abnormality (Tho-A)
  • E39 – Drain pipe temperature thermistor abnormality (Tho-D1, D2)
  • E40 – High pressure abnormality (63H1-1, 2 active)
  • E41 (E51) –  Power transistor overheating
  • E42 – Power failure (CM1, 2)
  • E43 – Over-connected indoor units, over-total capacity connection
  • E45 – Communication error between inverter PCB and external control PCB
  • E46 – Mixed address setting methods available on the same network
  • E48 – External DC fan motor abnormality
  • E49 – Low pressure abnormality
  • E53/E55 –  Suction pipe temperature thermistor abnormality (Tho-S), Under-dome temperature thermistor abnormality (Tho-C1, C2)
  • E54 – High pressure sensor (TSH) Low pressure sensor (PSL) abnormality
  • E56 – Power transistor temperature thermistor abnormality (Tho-P1, Tho-P2)
  • E58 – Abnormal compressor with loss of synchronization
  • E59 – Compressor start failure (CM1, 2)
  • E60 – Rotor position detection failure (CM1, 2)
  • E61 – Communication error between main unit and backup units System error
  • E63 – Emergency stop