The Toshiba Air Conditioner Error Codes help technicians and users identify and resolve potential issues efficiently.
Error Codes and Solutions
| Error Code | Solution |
|---|---|
| E01 | No communication between the remote control and the indoor unit. |
| E02 | Local controller failure: unable to transmit. |
| E03 | The master indoor unit does not receive data from A-B. |
| E04 | The indoor unit (excluding the dual slave) does not receive communications from the outdoor unit; may also involve the klixon on the discharge pipe of the outdoor unit. |
| E08 | Duplicate indoor unit address. |
| E09 | Two local controllers connected in a group, both set as masters. |
| E10 | Failure of the indoor unit PSB. |
| E18 | Communication failure between the master indoor unit and the slave indoor unit(s). |
| F01 | Error with the TCJ sensor (liquid) in the indoor unit (open or closed circuit: resistance measured in kΩ). |
| F02 | Error with the TC2 sensor (vapor) in the indoor unit (open or closed circuit: resistance measured in kΩ). |
| F04 | Error with the TD sensor (discharge) in the outdoor unit (open or closed circuit: resistance measured in kΩ). |
| F06 | Error with the TE sensor (coil) in the outdoor unit (open or closed circuit: resistance measured in kΩ). |
| F08 | Error with the TO sensor (ambient) in the outdoor unit (open or closed circuit: resistance measured in kΩ). |
| F10 | Error with the TA sensor (return air) in the indoor unit (open or closed circuit: resistance measured in kΩ). |
| F29 | Indoor unit PCB failure. |
| H01 | Excessive current detected in the outdoor unit inverter compressor. |
| H02 | Excessive current detected in the master outdoor unit shortly after startup. |
| H03 | Current detected in the master outdoor unit while in standby mode. |
| H06 | Low pressure detected in the outdoor unit by the Ps sensor (0.2 bar – 2.9 psig). |
| L03 | Duplicate master indoor units in a group. |
| L07 | Indoor unit in a group previously addressed as a single unit: check the address. |
| L08 | Indoor unit addresses not set: check the address. |
| L09 | Indoor unit capacities not set (check DN 11 code). |
| L29 | IPDU error in the outdoor unit (reduction in the number of detected IPDUs). |
| L30 | Input on the CN80 circuit of the indoor PCB for 1 minute. |
| L31 | Outdoor unit PCB error. |
| P01 | Error with the indoor unit fan motor. |
| P03 | High discharge temperature in the outdoor unit (TD1 exceeds 115°C). |
| P04 | Outdoor unit high-pressure switch activated (detected by high temperature on the TE sensor in digital/super digital inverter units). |
| P07 | Overheating of the outdoor unit PCB heat sink (temperature exceeds 90°C). |
| P10 | Float switch in the indoor unit activated. |
| P12 | Indoor unit fan motor error detected by the feedback circuit. |
| P19 | Incorrect temperature change registered (four-way valve error). |
| P22 | IPDU error in the outdoor unit fan motor. |
| P26 | Short circuit in the outdoor unit’s giant transistor. |
| P29 | Compressor error in the outdoor unit detected by the feedback circuit. |
| P30 | Error in the follower unit of the indoor group control/duplicate central control addresses. |
| P31 | Indoor unit PCB error. |
| C05 | Transmission error in the TCC-Link central control device. |
| C06 | Reception error in the TCC-Link central control device. |
