For notification, a system of codes has been developed, which are blinking of light indicators in a given order. Indicators are located on the front of the indoor unit as well as on the outdoor unit. When more than one SANYO air conditioner error is detected at the same time, the most serious one is displayed first.
| SANYO air conditioner error code | Decoding the error code of the SANYO air conditioner |
| E01 | There is no connection between the indoor and outdoor units |
| E02 | Failure to transfer data between modules |
| E03 SANYO air conditioner error | Data transmission from the remote control to the indoor unit is not correct |
| E04 | Incorrect data transfer |
| E05 | Incorrect data transfer, including between modules |
| E06 | Violation of information transfer between modules |
| E07 | Outdoor unit voltage too low |
| E08 SANYO air conditioner error | Information to the indoor unit comes in duplicated form |
| E09 | Data transmitted from the control panel is duplicated |
| E10 | Error in transferring multiple data |
| E11 | The work of the main control panel is duplicated |
| E14 | Violation in the transmission of multiple data |
| E15 | Indoor unit voltage too high |
| E16 error codes for Sanio air conditioners | Indoor unit not connected |
| E17 | Error receiving multiple signals |
| E18 | Disconnected communication with MDC |
| E20 | Multiple data transmission error |
| E31 | Outdoor unit operation error |
| L03 | Data is duplicated on the outdoor unit |
| L04 | The connection of wires to the indoor unit is broken |
| L07 | No address for receiving information |
| L08 | The capacity of the indoor unit does not correspond to the specified parameters |
| L09 | Outdoor unit control error or power not supplied |
| L10 errors of Sanio air conditioners | Incorrect connection of wire groups |
| L11 | The power of the indoor unit is disturbed |
| L13 | The connection of the ceiling panel of the indoor unit is broken |
| P01 | The float switch has tripped (condensation container overflowed) |
| P03 | AC open phase detected |
| P05 | No gas |
| P09 | Fan safety thermostat tripped |
| P10 | Dangerous discharge temperature |
| P15 error codes for Sanio air conditioners | Blocked four-way valve |
| P19 | Excessive load on the cooling circuit |
| P20 | Outdoor fan breakage |
| P22 | Inverter Compressor Malfunction (HIC PCB) |
| P26 | Malfunctioning inverter compressor (MDC) |
| P29 | Parallel operation of control boards is broken |
| P31 | Compressor overvoltage |
