Fault Codes – Toshiba RAS “N” Series

Fault Codes – RAS “N” Series
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.
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
1. Press CHK to enter service mode
2. Navigate through TIMER ƒ buttons until all LEDs flash, accompanied by the internal buzzer – compare the displayed code with the table below
3. Press CLR button to clear the existing fault code (controller displays 7F)
Press ON/OFF button to exit service mode.

Initial code/display = 01
Code = 0C
Description = TA sensor open or short circuit

Initial code/display = 01
Code = 0d
Description = TC sensor open or short circuit

Initial code/display = 01
Code = 11
Description = Indoor fan motor problem

Initial code/display = 01
Code = 12
Description = Indoor PCB problem

Initial code/display = 01
Code = 04
Description = Indoor to outdoor communication (includes compressor thermostat)

Initial code/display = 01
Code = 05
Description = Indoor to outdoor communication

Initial code/display = 02
Code = 14
Description = Inverter low voltage or short circuit protection

Initial code/display = 02
Code = 16
Description = Compressor position circuit

Initial code/display = 02
Code = 17
Description = Compressor current detected during off-cycle

Initial code/display = 02
Code = 18
Description = TE or TS sensor open or short circuit

Initial code/display = 02
Code = 19
Description = Td sensor open or short circuit

Initial code/display = 02
Code = 1A
Description = Outdoor fan motor problem

Initial code/display = 02
Code = 1b
Description = TE sensor fault

Initial code/display = 02
Code = 1C
Description = Compressor drive circuit

Initial code/display = 03
Code = 07
Description = Indoor to outdoor communication (includes compressor thermostat)

Initial code/display = 03
Code = 08
Description = Indoor heat exchanger changes temperature – but in wrong direction

Initial code/display = 03
Code = 1d
Description = Compressor locked rotor current protection

Initial code/display = 03
Code = 1E
Description = Compressor - high discharge temperature

Initial code/display = 03
Code = 1F
Description = Compressor current remains too high – after current release
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