75 toshiba AC error codes + troubleshooting (FULL LIST)

Table of Contents

Searching for Toshiba air conditioner error codes to fix your Toshiba aircon issues?

This guide we offer you the full list of Toshiba air conditioning fault codes that will help you.

Toshiba RAV-SM / RAV-SP aircon error codes

How to check Toshiba RAV-SM / RAV-SP aircon error code?

Toshiba error codes are displayed directly on wired remote controller – to access the service history:

Press the TEST and the SET button of the remote controller for at least 4 seconds.
Scroll through stored codes using the TEMP set buttons.
Then, press the TEST button again to cancel service history.
The final step is press the CLEAR button to delete codes

A note: Up to 4 Codes can be stored.

3 series earlier	4 series onwards	Possible causes
E01	E01	Controller (local or network) receives no communication from a master indoor unit- could include that master is turned off. Also check that there is a master controller
E02	E02	Local controller failure (unable to transmit)
E03	E03	Master indoor unit receives no data to A-B. Often appears as an E01 fault code
E04	E04	Indoor unit (except twin slave) receives no communication from outdoor unit; can include comprssorer klixon
E08	E08	Duplicated indoor address
E09	E09	2 local controller on a group – both configured as masters
E10	E10	Indoor PCB failure
E18	E18	Communication failure between master indoor unit and slave
F01	F01	Indoor TCJ sensor error
F02	F02	Indoor TC2 sensor error
F04	F04	TD Sensor error
F06		TE/TS Sensor error
	F06	TE Sensor error
	F07	TL Sensor Error
F08	F08	TO sensor error
F10	F10	Indoor TA sensor error
	F12	TS Sensor Error
	F13	Number of detected IPDU units is reduced
	F15	TE,TS Sensor Error IPDU error
	F23	PS sensor error
F29	F29	Indoor PCB failure
	F31	Outdoor P.C EEPROM Error
H01	H01	Inverter compressor over current detected
H02	H02	Master outdoor unit over current detected shortly after start up (compressor lock)
H03	H03	Current detected on master outdoor unit whilst idle
	H04	Case thermostat operation
H06	H06	Low pressure detected by Ps sensor (0.02Mpa)
L03	L03	Duplicated master indoor units in a group
L07	L07	Indoor in a group previously addressed as a single unit – check addressing
L08	L08	Indoor address not set
L09	L09	Indoor unit capacity not set
	L10	Unset jumper of service P.C board
L29	L29	IPDU error ( number of detected IPDU is reduced )
L30	L30	Input on CN80 circuit for 1 minute
L31	L31	Outdoor PCB error
P01	P01	Indoor fan motor error
P03	P03	High discharge temperature (TD1 exceeded 115°C)
P04	P04	High pressure switch activated (Detected by high TE temp on Digital Inverter)
	P05	Open Phase of 3 phase power supply
P07	P07	Heat sink overheat Error
P10	P10	Float switch activated
P12	P12	Indoor fan motor error – detected by feedback circuit
	P15	TD.TS sensor Error
P19	P19	Wrong change in temperature (4 way valve error)
	P20	TL Sensor error
P22	P22	Outdoor fan IPDU error
P26	P26	Short circuit error of compressor driving element
P29	P29	Compressor error detected by feedback circuit
P31	P31	Indoor PCB error

Toshiba RAS “N” Series aircon error codes

How to check Toshiba RAS “N” Series aircon error code?

Fault codes are displayed through the LEDs flashing at 5 times per second. Note, the green LED will flash once per
second when the system is initially powered.

More specific codes may be obtained, while in the fault mode through the wireless controller.

Press CHK to enter service mode
Navigate through TIMER buttons until all LEDs flash, accompanied by the internal buzzer – compare the
displayed code with the table below
Press CLR button to clear the existing fault code (controller displays 7F).
Press ON/OFF button to exit service mode.

Light blinking	Error code	Possible causes
green	0C	TA sensor open or short circuit
green	0d	TC sensor open or short circuit
green	11	Indoor fan motor problem
green	12	Indoor PCB problem
green + yellow	04	Indoor to outdoor communication (includes compressor thermostat)
green + yellow	05	Indoor to outdoor communication
green + orange	14	Inverter low voltage or short circuit protection
green + orange	16	Compressor position circuit
green + orange	17	Compressor current detected during off-cycle
green + orange	18	TE or TS sensor open or short circuit
green + orange	19	Td sensor open or short circuit
green + orange	1A	Outdoor fan motor problem
green + orange	1b	TE sensor fault
green + orange	1C	Compressor drive circuit
green + yellow + orange	07	Indoor to outdoor communication (includes compressor thermostat)
green + yellow + orange	08	Indoor heat exchanger changes temperature – but in wrong direction
green + yellow + orange	1d	Compressor locked rotor current protection
green + yellow + orange	1E	Compressor – high discharge temperature
green + yellow + orange	1F	Compressor current remains too high – after current release

Important: Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory.

Caution: must be taken when removing the access covers as high voltages are present.

RAS – Auto Restart Function

The indoor unit is equipped with an automatic restart facility that allows the unit to restart, at the last set operating conditions, after a power failure. The operation will resume without warning three minutes after power is restored. This feature is not set up when these systems are shipped from the factory, therefore it will need to be activated by the installing company.

Generally the process is the same for all RAS products since approx 2001 and is as follows:

To initiate auto restart:

Turn the power on. Green On/Off light will flash.
Set the system to operate using the remote controller. Green On/Off light will be on constantly.
Press and hold down the temporary button for three seconds.
The indoor unit will bleep three times to acknowledge set up. In most cases the green light changes to orange.
The system will continue to operate during this set up.
After set up the system may be stopped using the remote controller.

To cancel auto restart:

The system is operating. Green On/Off light will be on constantly.
Stop the system operating using the remote controller. Green On/Off light will extinguish.
Press and hold down the temporary button for three seconds.
The indoor unit will bleep three times to acknowledge cancellation.
The system will have stopped operating.

This feature cannot be set if the timer is in operation. The louver will not swing, if it was previously set, when the system auto restarts.

Toshiba RAV Series aircon error codes

How to check Toshiba RAV Series aircon error code?

Fault diagnosis is available by pressing the check button on the remote controller

The first number displayed is a code for the number of compressor starts the indoor unit has requested.
This number is displayed using the hexadecimal format.
Numbers displayed after the start number are fault codes

Error code	Possible causes / system status	Check procedure
0C	No cooling operation	Sensor Resistance, 20°C = 12.5kΩ, 25°C = 10kΩ
0d	Outdoor unit simulates high temperature release continually	Sensor Resistance, 20°C = 12.5kΩ, 25°C = 10kΩ
04	No communication outdoor to indoor. Indoor unit operates – outdoor unit does not	– Interconnecting cables / isolator – Outdoor transformer (240/12vac) – Printed Circuit Board
08	Cooling o/p in Heat mode or heating o/p in Cool mode	Operation of 4 way valve, energised for heating / TC sensor
09	Indoor fan low speed, no outdoor unit operation	– Gas charge / pipe blockage. – Indoor air flow – TC Sensor / For cross wiring
0b	Indoor water level	Lift pump operation. Condensate drain for blockage. Float switch operation – break on rise
97	One zone may not be operating	– X&Y terminations and wiring continuity. – Indoor PCB
98	Duplicated zone address	SW02 address set up
99	No communication Indoor to Rem. Con.	– Interconnecting cables. – Indoor is set up as a master. – Only one master in a group.
18	TE Sensor open circuit or short circuit	Sensor Resistance, 20°C = 12.5kΩ, 25°C = 10kΩ
19	TL or TD Sensor open circuit or short circuit	Sensor Resistance, 20°C = 12.5kΩ, 25°C = 10kΩ, TD 23°C = 53kΩ
20	Low Pressure Trip	Change Outdoor PCB (No LP Switch)
21	High Pressure Trip	– Gas Charge – quantity & quality – Pipe blockages – Air flows
1E	High Compressor Discharge Temperature	– Gas Charge – quantity & quality – TD sensor – Indoor unit air flow
b5	External input display fault or Low level refrigerant leak if RD1 fitted	Check connectons on indoor pcb and chech leak detection system if fitted
b6	External interlock display fault or high level refrigerant leak if RD1 fitted	Check connectons on indoor pcb and check leak detection system if fitted
b7	Slave unit in group has fault	Check group controller for faults