Index: Split System AC Error Codes, Multi System AC Error Codes, Portable AC Error Codes; Split System AC Error Codes: When an error occurred in the air conditioner , an error code and indoor UNIT No. appear on the display part of the remote controller . The error code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error log” for confirmation. Toshiba Air Conditioner Error Codes Error Code Cause of fault E01 No communication between remote controller and indoor unit. E02 Local controller failure - unable to transmit E03 Master indoor unit receives no data to A-B E04 Indoor unit (except twin slave) receives no communications from outdoor unit; can also include klixon on discharge pipe of outdoor unit E08 Duplicated indoor unit address E09 2 local controllers connected on a group - both configured as masters E10 Indoor unit PSB failure E1...