All Toshiba error codes
This page brings together Toshiba error codes grouped by type of fault: what each code means, its likely causes, and what you can safely check before calling a professional.
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The Toshiba codes on this page, grouped by type of fault.
power supply
communication
compressor
discharge temperature
Temperature sensor — Toshiba
These codes indicate a sensor that’s no longer returning a consistent value. The fault almost always comes from the sensor itself or its connector, rarely from the unit.
Code E14Medium severityair-to-air
Outdoor coil sensor fault
Possible causes
- Faulty outdoor coil thermistor
- Faulty wiring
What you can check
- Cut the power for 30 minutes, then restart
Models concerned: Seiya, Haori, Shorai Edge
This fault requires a qualified technician. Do not open the unit.
Code F01Medium severityair-to-air
Indoor coil sensor fault (liquid side)
Possible causes
- Faulty liquid-side thermistor
- Disconnected connector
- Sensor out of its housing
What you can check
- Cut the power for 30 minutes, then restart
Models concerned: Seiya, Haori, Shorai Edge, Kazumi
This fault requires a qualified technician. Do not open the unit.
Code F02Medium severityair-to-air
Indoor coil sensor fault (gas side)
Possible causes
- Faulty gas-side thermistor
- Disconnected connector
- Damaged wiring
What you can check
- Cut the power for 30 minutes, then restart
Models concerned: Seiya, Haori, Shorai Edge, Kazumi
This fault requires a qualified technician. Do not open the unit.
Circuit board — Toshiba
A control or power board is no longer responding. A full restart sometimes clears a false fault; otherwise, it needs replacing.
Code F29Critical severityair-to-air
Indoor unit circuit board fault
Possible causes
- Faulty indoor PCB
- Power surge
- Moisture on the board
What you can check
- Cut the power for 30 minutes, then restart
Models concerned: Seiya, Haori, Shorai Edge, Kazumi
This fault requires a qualified technician. Do not open the unit.
Code F31Critical severityair-to-air
Outdoor unit EEPROM memory fault
Possible causes
- Corrupted EEPROM
- Power surge
- Faulty outdoor control board
What you can check
- Cut the power for 30 minutes, then restart
Models concerned: Seiya, Haori, Shorai Edge, Daiseikai
This fault requires a qualified technician. Do not open the unit.
General fault — Toshiba
These codes don’t point to a specific part: the unit is signaling that an internal safety feature has tripped.
Code E06Medium severityair-to-air
Incorrect number of indoor units detected (multi-split)
Possible causes
- An indoor unit is powered off
- A unit’s connecting cable is cut
- Incorrect addressing of a unit
What you can check
- Check that all indoor units are powered on
- Check the wiring of each unit
- Cut the main power for 30 minutes, then restart
Models concerned: Toshiba multi-split, RAS-M, Shorai Edge multi
This fault requires a qualified technician. Do not open the unit.
Code E19Medium severityair-to-air
Error in the number of master outdoor units (header)
Possible causes
- Outdoor unit configuration/addressing
Models concerned: Toshiba multi-split, RAS-M
This fault requires a qualified technician. Do not open the unit.
Power supply — Toshiba
The supply voltage is abnormal or absent. Check the dedicated circuit breaker first.
Code P05Critical severityair-to-air
Phase or power supply fault
Possible causes
- Missing phase
- Voltage out of range
- Blown fuse
- Phase reversal (three-phase)
What you can check
- Check the electrical panel and fuses
- Have an electrician check the connection
Models affected: Seiya, Haori, Shorai Edge, Daiseikai
This fault requires a qualified technician. Do not open the unit.
Communication — Toshiba
The indoor unit and outdoor unit are no longer communicating. It’s often the connecting cable or a circuit board, not the refrigerant circuit.
Code E02Low severityair-to-air
Wired remote control communication fault
Possible causes
- Remote control cable cut or loose
- Faulty wired remote control
- Interference on the line
What you can check
- Check the remote control wiring
- Try using the infrared remote control instead
- Cut the power for 30 minutes, then restart
Models affected: Seiya, Haori, Shorai Edge, Kazumi, Daiseikai
Compressor — Toshiba
The compressor is the central and most expensive part. These codes protect the unit by shutting it down before damage occurs: never force repeated restarts.
Code P29Critical severityair-to-air
Compressor position detection circuit fault
Possible causes
- Faulty power module
- Compressor struggling
- Damaged compressor wiring
What you can check
- Cut the power — call a technician
Models affected: Seiya, Haori, Shorai Edge, Daiseikai
This fault requires a qualified technician. Do not open the unit.
Discharge temperature — Toshiba
The temperature at the compressor outlet exceeds the safety threshold. This points to low refrigerant or poor heat exchange.
Code P03Critical severityair-to-air
Compressor discharge temperature too high
Possible causes
- Refrigerant shortage (leak)
- Clogged filter dryer
- Blocked expansion valve
- Excessive high pressure
What you can check
- Cut the power for 1 hour to let it cool down
- Clean the outdoor heat exchanger
- If the fault comes back: a leak is likely
Models affected: Seiya, Haori, Shorai Edge, Daiseikai
This fault requires a qualified technician. Do not open the unit.
All Toshiba codes published on the site
This list updates automatically with every new guide.
Technical information provided for guidance only, based on manufacturer documentation and field feedback. It does not replace the diagnosis of a qualified professional. Found an error on this page? Report it.