What does your Toshiba fault code mean?
Pick the code showing on your remote, wall controller or indoor unit and see what it means, what commonly causes it, and what is safe to check yourself. This page covers 70 Toshiba fault codes for units sold in Australia, compiled from official Australian manufacturer and distributor documentation, the same references our own technicians carry.
Heads up: Toshiba uses the same code with different meanings on different product ranges, so check the model range shown next to the code.
Every Toshiba fault code at a glance
Some models show faults as a flashing-light pattern instead of a code; documented lamp patterns are listed alongside their codes.
| Code | What it means | Severity |
|---|---|---|
| 04 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The indoor and outdoor units are not communicating with each other. | Fault – service needed |
| 07 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The outdoor unit’s signal drops out while running, often caused by low refrigerant or a brief power interruption. | Fault – service needed |
| 08 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The heating/cooling changeover valve (4-way valve) is operating in reverse. | Fault – service needed |
| 0C (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The room temperature sensor in the indoor unit has failed; the unit keeps running. | Minor fault |
| 0d (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The indoor coil temperature sensor has failed or come out of position; the unit keeps running. | Minor fault |
| 11 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The indoor fan motor has failed and the unit has shut down. | Fault – service needed |
| 12 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
A fault on the indoor unit’s circuit board. | Fault – service needed |
| 14 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The inverter detected a sudden overcurrent and shut the system down. | Fault – service needed |
| 16 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
A fault in the compressor position detection circuit or a short between compressor windings. | Fault – service needed |
| 17 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The outdoor unit’s current detection circuit has an error. | Fault – service needed |
| 18 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
An outdoor coil or suction temperature sensor has failed or come loose. | Fault – service needed |
| 19 (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The compressor discharge temperature sensor has failed. | Fault – service needed |
| 1A (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The outdoor fan drive system has a fault. | Fault – service needed |
| 1C (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The compressor drive output has a fault; the compressor may be locked or not connected. | Fault – service needed |
| 1E (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The compressor discharge temperature went above 117 degrees C and the system shut down. | Fault – service needed |
| 1F (RAS residential wall-mounted splits (older Digital series); code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The compressor has broken down and cannot keep running. | Fault – service needed |
| 1d (RAS residential wall-mounted splits (older Digital series); compressor variant, distinct from the 1d outdoor sensor fault: all lamps off and the unit stops; code is read on the remote controller in service mode) also shown as All indoor unit lamps flash 5 times per second when a fault is active; code is read on the remote in service mode via the CHECK button |
The compressor is not rotating when it should be. | Fault – service needed |
| 1d (RAS residential wall-mounted splits (older Digital series); outdoor sensor variant, distinct from the 1d compressor fault: the unit keeps running) also shown as Listed as 1b in many industry references; seven segment b and d are easily confused, Not shown on the unit lamps; read on the remote controller in service mode via the CHECK button |
An outdoor unit temperature sensor (heat exchanger or outdoor air) has failed; the system keeps running. | Minor fault |
| C05 (Systems on TCC-Link central control (multi-head, ducted and VRF installations)) | The central controller cannot send signals on the central control wiring. | Minor fault |
| C06 (Systems on TCC-Link central control (multi-head, ducted and VRF installations)) | The central controller cannot receive signals on the central control wiring. | Minor fault |
| C12 (Systems on TCC-Link central control (multi-head, ducted and VRF installations)) | A general alarm from equipment connected through the system’s external control interface. | Minor fault |
| E01 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
The remote controller is not receiving communication from the indoor unit. | Fault – service needed |
| E02 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
The wired remote controller cannot send its signal to the indoor unit. | Fault – service needed |
| E03 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
The indoor unit has stopped hearing from the remote controller or central controller. | Fault – service needed |
| E04 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready lamp flashing, Timer and Operation lamps off (hi-wall lamp indication) |
The indoor unit is not receiving any signal from the outdoor unit. | Fault – service needed |
| E08 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
Two or more indoor units have been set to the same address, so the system cannot tell them apart. | Fault – service needed |
| E09 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
Two remote controllers in the same group are both set as the master controller. | Minor fault |
| E10 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
A communication fault between processors on the indoor unit’s circuit board. | Fault – service needed |
| E18 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Operation lamp flashing, Ready and Timer lamps off (hi-wall lamp indication) |
The master indoor unit has lost communication with its follower indoor units (twin or group systems). | Fault – service needed |
| F01 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp off (hi-wall lamp indication) |
The indoor coil temperature sensor (TCJ) has failed or come loose. | Fault – service needed |
| F02 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp off (hi-wall lamp indication) |
The indoor coil temperature sensor (TC) has failed or come loose. | Fault – service needed |
| F04 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
The compressor discharge temperature sensor (TD) on the outdoor unit has failed. | Fault – service needed |
| F06 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
An outdoor coil temperature sensor (TE) has failed. | Fault – service needed |
| F07 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
The outdoor liquid line temperature sensor (TL) has failed. | Fault – service needed |
| F08 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
The outdoor air temperature sensor (TO) has failed; the system keeps running. | Minor fault |
| F10 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp off (hi-wall lamp indication) |
The indoor return air temperature sensor (TA) has failed or come loose. | Fault – service needed |
| F12 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
The compressor suction temperature sensor (TS) has failed. | Fault – service needed |
| F13 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
The inverter heat sink temperature sensor (TH) has failed. | Fault – service needed |
| F15 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing alternately, Ready lamp on (hi-wall lamp indication) |
Outdoor temperature sensors (TE and TS) appear to be swapped or fitted in the wrong positions. | Fault – service needed |
| F29 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing together, Ready lamp off (hi-wall lamp indication) |
The indoor unit’s memory chip (EEPROM) has an error. | Fault – service needed |
| F31 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer and Operation lamps flashing together, Ready lamp on (hi-wall lamp indication) |
The outdoor unit’s memory chip (EEPROM) has an error. | Fault – service needed |
| H01 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer lamp flashing, Ready and Operation lamps off (hi-wall lamp indication) |
The outdoor unit has shut down after detecting too much electrical current at the inverter compressor. | Fault – service needed |
| H02 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer lamp flashing, Ready and Operation lamps off (hi-wall lamp indication) |
The compressor appears to be locked or seized; overcurrent was detected just after start-up. | Fault – service needed |
| H03 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer lamp flashing, Ready and Operation lamps off (hi-wall lamp indication) |
The outdoor unit’s current detection circuit is reading current when it should not be. | Fault – service needed |
| H04 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Timer lamp flashing, Ready and Operation lamps off (hi-wall lamp indication) |
The compressor case thermostat has operated because the compressor overheated. | Fault – service needed |
| H06 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) | The system has shut down on low refrigerant pressure. | Fault – service needed |
| L03 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp off (hi-wall lamp indication) |
There is more than one master indoor unit set in the same group. | Fault – service needed |
| L07 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp off (hi-wall lamp indication) |
A group control wire is connected to an indoor unit that is set up as an individual unit. | Fault – service needed |
| L08 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp off (hi-wall lamp indication) |
The indoor unit’s group address has not been set. | Fault – service needed |
| L09 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp off (hi-wall lamp indication) |
The indoor unit’s capacity setting has not been set. | Fault – service needed |
| L10 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp on (hi-wall lamp indication) |
The outdoor service circuit board has not had its model type set (jumper not configured). | Fault – service needed |
| L20 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp on (hi-wall lamp indication) |
Two units on the central control system have been given the same central control address. | Fault – service needed |
| L29 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp on (hi-wall lamp indication) |
A fault inside the outdoor unit’s electronics (processor communication, heat sink, sensor or valve related). | Fault – service needed |
| L30 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing together, Timer lamp on (hi-wall lamp indication) |
The system was stopped by an external interlock signal connected to the indoor unit. | Fault – service needed |
| L31 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) | The outdoor unit’s control board (PCB) has a fault. | Fault – service needed |
| P01 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Timer lamps flashing alternately (hi-wall lamp indication) |
The indoor fan motor is not running correctly and the unit has shut down to protect itself. | Fault – service needed |
| P03 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The compressor discharge temperature went too high and the system shut down to protect itself. | Fault – service needed |
| P04 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The outdoor unit’s high pressure protection has activated. | Fault – service needed |
| P05 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The power supply voltage to the unit is outside the acceptable range. | Fault – service needed |
| P07 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The inverter heat sink in the outdoor unit has overheated. | Fault – service needed |
| P10 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Timer lamps flashing alternately (hi-wall lamp indication) |
The indoor unit’s float switch has detected condensate water building up in the drain tray. | Fault – service needed |
| P12 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Timer lamps flashing alternately (hi-wall lamp indication) |
The indoor DC fan motor has a fault (detected by its feedback circuit). | Fault – service needed |
| P15 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The system has detected signs of a refrigerant gas leak and shut down. | Urgent – turn it off |
| P19 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The heating/cooling changeover valve (4-way valve) is not switching correctly. | Fault – service needed |
| P20 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
High pressure protection has operated because a coil temperature went above its limit. | Fault – service needed |
| P22 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The outdoor fan system has a fault. | Fault – service needed |
| P26 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
A short circuit was detected in the compressor’s inverter drive electronics. | Fault – service needed |
| P29 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
The compressor position detection circuit has an error. | Fault – service needed |
| P30 (Systems on TCC-Link central control (multi-head, ducted and VRF installations)) | The central controller is reporting a fault on one of the follower units in a group. | Fault – service needed |
| P31 (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems) also shown as Ready and Operation lamps flashing alternately (hi-wall lamp indication) |
This indoor unit has stopped because another indoor unit in its group has a fault. | Fault – service needed |
Codes that mean switch the system off
If your Toshiba unit shows P15, turn the system off at the isolator and leave it off. These faults involve the compressor, refrigerant or electrical protection, and running the unit can cause further damage.
The most serious Toshiba fault codes explained
What does Toshiba fault code P15 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The system has detected signs of a refrigerant gas leak and shut down.
Likely causes:
- Refrigerant leak or undercharge
- Service valve not fully open
- Damaged refrigerant pipe
Safe checks before you call:
- Stop using the unit and arrange service; do not attempt any refrigerant checks yourself
What does Toshiba fault code E01 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The remote controller is not receiving communication from the indoor unit.
Likely causes:
- Loose or damaged wiring between the remote controller and indoor unit
- Indoor unit has no power
- Remote controller or indoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
- Check the switchboard breaker for the air conditioner has not tripped
What does Toshiba fault code E02 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The wired remote controller cannot send its signal to the indoor unit.
Likely causes:
- Fault inside the remote controller
- Wiring fault between controller and indoor unit
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code E03 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The indoor unit has stopped hearing from the remote controller or central controller.
Likely causes:
- Remote controller cable disconnected or damaged
- Central control adapter fault
- Indoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code E04 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The indoor unit is not receiving any signal from the outdoor unit.
Likely causes:
- Miswiring or damage to the cable between indoor and outdoor units
- Outdoor unit has lost power
- Outdoor or indoor circuit board serial circuit fault
Safe checks before you call:
- Check the outdoor unit isolator switch (next to the outdoor unit) is switched on
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code E08 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
Two or more indoor units have been set to the same address, so the system cannot tell them apart.
Likely causes:
- Addressing error after installation or board replacement
- Remote controller group wiring changed without re-addressing
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code E10 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
A communication fault between processors on the indoor unit’s circuit board.
Likely causes:
- Indoor unit circuit board fault
- Power surge or electrical interference
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code E18 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The master indoor unit has lost communication with its follower indoor units (twin or group systems).
Likely causes:
- Wiring fault between indoor units
- One indoor unit in the group has lost power
- Indoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
- Check breakers for all indoor units in the group are on
What does Toshiba fault code F01 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The indoor coil temperature sensor (TCJ) has failed or come loose.
Likely causes:
- Sensor unplugged, open circuit or short circuit
- Sensor out of position on the coil
- Indoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code F02 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The indoor coil temperature sensor (TC) has failed or come loose.
Likely causes:
- Sensor unplugged, open circuit or short circuit
- Indoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code F04 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
The compressor discharge temperature sensor (TD) on the outdoor unit has failed.
Likely causes:
- Sensor open circuit or short circuit
- Outdoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
What does Toshiba fault code F06 mean? (RAV Digital and Super Digital Inverter systems (ducted, cassette, under ceiling and light commercial hi-wall) with wired controllers; many codes are shared with multi-head and VRF systems)
An outdoor coil temperature sensor (TE) has failed.
Likely causes:
- Sensor open circuit or short circuit
- Outdoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it
Fault confirmed? Here is what to do next
A fault code is the starting point, not the fix. Start here:
- Air conditioner repairs – how we diagnose and fix Toshiba faults across Adelaide. Our fault find covers the full diagnosis, and it is on us if you go ahead with the repair.
- Repair or replace calculator – whether fixing your current system is the smarter money.
- Service and maintenance – regular servicing prevents most of the faults on this page.
- Air conditioner fault code lookup – all 15 brands in one place.
- All calculators and tools
Call us on 08 8296 7888 or book online and we will call or text you back ASAP.
Sources for this page
Every Toshiba code above is checked against these Australian documents. Open them yourself to verify anything on this page:
- toshiba-aircon.com.au (toshiba-aircon.com.au)
- toshiba-aircon.com.au (toshiba-aircon.com.au)
- toshiba error codes (compareairconditioning.com.au)
- toshiba error codes (aircaresolutionsnsw.com.au)
- toshiba-aircon.com.au (toshiba-aircon.com.au)
Toshiba fault code FAQs
Where do I find the fault code on a Toshiba air conditioner?
Check the remote or wall controller display first. Some models flash the indoor unit’s lamps in a pattern instead; the table above lists documented lamp patterns alongside their codes. If nothing is showing, the code may only appear while the fault is active.
Can I clear a Toshiba fault code myself?
You can reset the system by turning it off at the isolator or breaker for five minutes. If the code stays gone, it was a one-off. If it returns, the fault is real and needs a licensed technician, and repeated resets can cause further damage on compressor or refrigerant faults.
Does a Toshiba fault code mean I need a new air conditioner?
Usually not. Most codes point to repairable faults like sensors, fan motors or drainage. Our fault find gives you an honest verdict either way, and the fee is credited if you repair with us.
Are these Toshiba fault codes correct for Australian models?
Yes. Every code on this page was checked against Australian documentation (toshiba-aircon.com.au, compareairconditioning.com.au, aircaresolutionsnsw.com.au), not overseas lists, because the same code can mean different things in different markets. Meanings still vary between model series, so treat this page as reference and cross-check your unit’s manual.
Written by Oliver Hastings, T&K Airpower. Last updated 01/08/2026. Compiled from Australian sources including toshiba-aircon.com.au, compareairconditioning.com.au, aircaresolutionsnsw.com.au, so you can check every code against the official documentation. Fault code meanings vary between model series and controllers, so treat this page as reference only and never remove panels or work on the refrigeration or electrical parts of the system yourself.
