Toshiba Air Conditioner Error Codes

Toshiba is known for producing high-quality air conditioners, but that doesn’t mean that you won’t experience a few issues down the road. All air conditioners, even those made by reputable companies like Toshiba, will naturally run into a few problems, but the good news is that your unit displays an error code to tell you what’s going on. Here’s a list of Toshiba aircon error codes, as well as their corresponding meanings.

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Toshiba Aircon Error Code List

• C05: Central control sending error in TCC-Link central control devices
• C06: Central control receive error in TCC-Link central control device
• C12: Batch alarm for general purpose equipment interface
• E01: Communication between remote control and indoor unit
• E02: Local controller failure
• E03: Master indoor unit receives no data to A-B
• E04: Communication error between indoor and outdoor unit
• E06: Decrease of number of indoor units
• E07: Communication error between indoor and outdoor units
• E08: Duplicated indoor unit address
• E09: Multiple local controllers connected on a group – both configured as masters
• E1: Room temperature sensor error
• E2: Evaporator temperature sensor error
• E3: Condenser temperature sensor error
• E4: Display panel communication error
• E10: Indoor unit PSB failure
• E12: Automatic address start error
• E16: Maximum number of connected indoor units exceeded
• E18: Communication failure between master indoor unit and slave indoor unit or units
• E19: Number of header outdoor units error
• E20: Other line connected during automatic addressing
• E23: Sending error between outdoor units
• E25: Duplicated follower outdoor address setup
• F01: Indoor unit TCJ (Liquid) sensor error
• F02: Indoor unit TC2 (Vapour) sensor error
• F04: Outdoor unit TD (Discharge) sensor error
• F06: Outdoor unit TE (Coil) sensor open
• F07: Heat exchanger temperature sensor (TE) disconnect
• F08: Outdoor unit TO (Ambient) sensor open
• F10: Indoor unit TA (Return Air) sensor error
• F12: Suction temperature sensor (TS) disconnect
• F15: Outdoor temperature sensor (TE, TS) issue
• F29: Indoor unit PCB failure
• F31: Outdoor EEPROM error
• H01: Outdoor unit inverter compressor overcurrent
• H02: Master outdoor unit overcurrent
• H03: Current detected on master outdoor unit while idle
• H04: Abnormal overheat of compressor
• H06: Outdoor unit low pressure detected
• L03: Duplicated master indoor units in a group
• L07: Indoor unit in a group of units previously addressed as a single unit
• L08: Indoor unit addresses not set
• L09: Indoor unit capacity not set
• L10: Unset model type of service P.C. board
• L29: Outdoor unit IPDU error
• L30: Input on indoor PCB CN80 circuit for 1 minutes
• L31: Outdoor unit PCB error
• P01: Indoor unit fan motor error
• P03: Outdoor unit high discharge temperature
• P04: Outdoor unit high pressure switch activated
• P05: Power supply voltage error
• P07: Outdoor unit PCB heat sink overheated
• P1: Bottom tray is full
• P10: indoor unit float switch activated
• P12: Indoor unit fan motor error
• P15: Gas leak detected
• P19: Wrong change in temperature recorded
• P20: High pressure protective operation
• P22: Outdoor unit fan motor IPDU error
• P26: Outdoor unit giant transistor short circuit
• P29: Outdoor unit compressor error detected by feedback circuit
• P30: Indoor unit group control follower unit error / duplicated central control addresses
• P31: Indoor unit PCB error
• 0C: Short-circuit or disconnection of room temperature sensor
• 0d: Heat exchanger sensor (TC) out of place, disconnected, short-circuited, or migrated
• 0F: Heat exchanger sensor (TCj) out of place, disconnected, short-circuited, or migrated
• 04: Return serial signal is not sent to indoor side from operation started
• 07: Return signal has been sent when operation started but is not sent from halfway
• 08: Four-way valve inverse error
• 1A: Outdoor fan drive system error
• 1b: Outdoor temperature sensor (TO) out of place or short circuited
• 1C: Compressor drive output error
• 1d: Compressor not rotating
• 1E: Discharge temperature overheating
• 1F: Compressor breakdown
• 11: Indoor fan circuit
• 12: Indoor P.C boards issue
• 14: Inverter overcurrent
• 16: Position-detect circuit error or short circuit between windings of compressor
• 17: Current-detect circuit error
• 18: Heat exchanger sensor (TE) or suction temperature sensor (TS) out of place, disconnected, or short circuited‍
• 19: Discharge temperature sensor disconnected or short circuited