You’ve lost the user’s manual where every Toshiba air error code is explained? No need to worry, as we have all the fault codes explained in the list below.
- The list contains the following information for every fault code:
- the parts of the air conditioner that are probably not working;
- judging device;
- a brief error description, as well as the parts that should be checked.
In addition to this, every Toshiba air error code is provided with the information on the conditioner status. This column explains whether the conditioning system is working or whether it has experienced an entire stop or auto-reset.
Toshiba mini split type AC error code
|Heat exchanger||• Dust/dirt clogging, scratches||• Wash the heat exchanger when it is clogged.|
|Fan motor||• Sound||• Take appropriate measures when abnormal sound is generated.|
|Filter||• Dust/dirt, breakage||• Wash the filter with water when it is contaminated.
• Replace it when it is damaged.
|Fan||• Vibration, balance|
• Dust/dirt, appearance
|• Replace the fan when vibration or balance is terrible.
• Brush or wash the fan when it is contaminated.
|Air inlet/outlet grilles||• Dust/dirt, scratches||• Fix or replace them when they are deformed or damaged.|
|Drain pan||• Dust/dirt clogging, drain contamination||• Clean the drain pan and check the downward slope for smooth drainage.|
|Ornamental panel, louvres||• Dust/dirt, scratches||• Wash them when they are contaminated or apply repair coating.|
|Exterior||• Rust, peeling of insulator|
• Peeling/lift of coat
|• Apply repair coating.|
Error codes and parts to be checked
|Wired remote controller display|
|Main defective parts||Parts to be checked
|E01||No header remote controller||Incorrect remote controller setting - The header remote controller has not been set (including two remote controllers).|
|E01||Remote controller communication error||No signal can be received from the indoor unit.|
|E02||Remote controller transmission error||System interconnecting wires, indoor P.C. board, remote controller.
- No signal can be sent to the indoor unit.
|E03||Indoor unit-remote controller regular communication error||Remote controller, network adapter, indoor P.C. board - No data is received from the remote controller or network adapter.|
|E04||Indoor unit-outdoor unit serial communication error||System interconnecting wires, indoor P.C. board, outdoor P.C. board - Serial communication error between indoor unit and outdoor unit|
|E04||IPDU-CDB communication error|
|E08||Duplicated indoor addresses *||Indoor address setting error - The same address as the self-address was detected.|
|E09||Duplicated header remote controllers||Remote controller address setting error - Two remote controllers are set as header in the double-remote controller control.
(* The header indoor unit stops raising alarm and follower indoor units continue to operate.)
|E10||CPU-CPU communication error||Indoor P.C. board - Communication error between main MCU and motor microcomputer MCU|
|E18||Header indoor unit-indoor follower unit regular communication error||Indoor P.C. board - Regular communication is not possible between header and follower indoor units or between twin header (main) and follower (sub) units.|
|E31||IPDU communication error||Communication error between IPDU and CDB|
|F01||Indoor unit heat exchanger sensor (TCJ) error||Heat exchanger sensor (TCJ), indoor P.C. board - Open-circuit or short-circuit of the heat exchanger sensor (TCJ) was detected.|
|F02||Indoor unit heat exchanger sensor (TC) error||Heat exchanger sensor (TC), indoor P.C. board - Open-circuit short-circuit of the heat exchanger sensor (TC) was detected.|
|F04||Outdoor unit discharge temp. sensor (TD) error||Outdoor temp. sensor (TD), outdoor P.C. board - Open-circuit or short-circuit of the discharge temp. sensor was detected.|
|F06||Outdoor unit temp. sensor (TE/TS) error||Outdoor temp. sensors (TE/TS), outdoor P.C. board - Open-circuit short-circuit of the heat exchanger temp. sensor was detected.|
|F07||TL sensor error||TL sensor may be displaced, disconnected or short-circuited.|
|F08||Outdoor unit outside air temp.|
|Outdoor temp. sensor (TO), outdoor P.C. board - Open-circuit or short-circuit of the outdoor air temp. sensor was detected.|
|F10||Indoor unit room temp. sensor (TA) error||Room temp. sensor (TA), indoor P.C. board - Open-circuit or short|
|F12||TS (1) sensor error||TS (1) sensor may be displaced, disconnected or short-circuited.|
|F13||Heat sink sensor error||Abnormal temperature was detected by the temp. sensor of the IGBT heat sink|
|F15||Temp. sensor connection error||Temp. sensor (TE/TS) may be connected incorrectly.|
|F29||Indoor unit, other P.C. board error||Indoor P.C. board - EEPROM error|
|F31||Outdoor unit P.C. board||Outdoor P.C. board - In the case of EEPROM error.|
|H01||Outdoor unit compressor breakdown||Current detect circuit, power voltage - Minimum frequency was reached in the current releasing control or short-circuit current (Idc) after direct excitation was detected|
|H02||Outdoor unit compressor lock||Compressor circuit - Compressor lock was detected.|
|H03||Outdoor unit current detect circuit error||Current detect circuit, outdoor unit P.C. board - Abnormal current was detected in AC-CT or a phase loss was detected.|
|H04||Case thermostat operation (1)||Malfunction of the case thermostat|
|H06||Outdoor unit low-pressure system error||Current, high-pressure switch circuit, outdoor P.C. board - Ps pressure sensor error was detected or low-pressure protective operation was activated.|
|L03||Duplicated header indoor units||Indoor address setting error - There are two or more header units in the group.|
|L07||Group line in individual indoor unit *||Indoor address setting error - There is at least one group-connected indoor unit among individual indoor units.|
|L08||Indoor group address not set *||Indoor address setting error - Indoor address group has not been set.|
|L09||Indoor power level not set||Indoor power level has not been set.|
|L10||Outdoor unit P.C. board||In the case of outdoor P.C. board jumper wire (for service) setting error|
|L20||LAN communication error||Address setting, central control remote controller, network adapter - Duplication of address in central control communication|
|L29||Other outdoor unit error||Other outdoor unit error
1) Communication error between IPDU MCU and CDB MCU
2) Abnormal temperature was detected by the heat sink temp. sensor in IGBT.
|L30||Abnormal external input into indoor unit (interlock)||External devices, outdoor unit P.C. board incorrect external input into CN80|
|L31||Phase sequence error, etc.||Power supply phase sequence, outdoor unit P.C. board - Abnormal phase sequence of the 3-phase power supply|
|P01||Indoor unit fan error||Indoor fan motor, indoor P.C. board - Indoor thermal relay activated) was detected.|
|P03||Outdoor unit discharge temp. error||An error was detected in the discharge temp. releasing control.|
|P04||Outdoor unit high-pressure system error||High-pressure switch - The IOL was activated or an error was detected in the high-pressure releasing control using the TE.|
|P05||Open phase detected||The power supply wire may be connected phase and voltages of the power supply.|
|P07||Heat sink overheat||Abnormal temperature was detected by the temp. sensor of the IGBT heat sink.|
|P10||Indoor unit water overflow detected||Drain pipe, clogging of drainage, float switch circuit, indoor P.C. board - Drainage is out of order or the float switch was activated.|
|P15||Gas leakage detected||There may be gas leakage from the pipe or connecting part. Check for gas leakage.|
|P19||4-way valve error||4-way valve, indoor temp. sensors (TC/TCJ) - An error was detected due to temperature drop of the indoor unit heat exchanger sensor when heating.|
|P20||High-pressure protective operation||High-pressure protection|
|P22||Outdoor unit fan error||Outdoor unit fan motor, outdoor unit P.C. board - An error (overcurrent, locking, etc.) was detected in the outdoor unit fan drive circuit.|
|P26||Outdoor unit inverter Idc activated||IGBT, outdoor unit P.C. board, inverter wiring, compressor - Short-circuit protection for compressor drive circuit devices (G-Tr/IGBT) was activated.|
|P29||Outdoor unit position error||Outdoor unit P.C. board, high-pressure switch - Compressor motor position error was detected.|
|P31||Other indoor unit error||Another indoor unit in the group is raising an alarm. E03/L07/L03/L08 alarm check locations and error description|
* – : The air conditioner automatically enters the auto-address setting mode.