Toshiba Air Conditioner Error Codes



Index: Split System AC Error Codes, Multi System AC Error Codes, Portable AC Error Codes;

Split System AC Error Codes:

When an error occurred in the air conditioner, an error code and indoor UNIT No. appear on the display part of the remote controller. The error code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error log” for confirmation.

Toshiba Air Conditioner Error Codes
Toshiba Air Conditioner Error Codes
Error CodeCause of fault
E01No communication between remote controller and indoor unit.
E02Local controller failure - unable to transmit
E03Master indoor unit receives no data to A-B
E04Indoor unit (except twin slave) receives no communications from outdoor unit; can also include klixon on discharge pipe of outdoor unit
E08Duplicated indoor unit address
E092 local controllers connected on a group - both configured as masters
E10Indoor unit PSB failure
E18Communications failure between master indoor unit and slave indoor unit or units
F01Indoor unit TCJ (Liquid) sensor error (Open or Closed circuit - resistance is measured in kΩ
F02Indoor unit TC2 (Vapour) sesnor error (Open or Closed circuit - resistance is measured in kΩ
F04Outdoor unit TD (Discharge) sesnor error (Open or Closed circuit - resistance is measured in kΩ
F06Outdoor unit TE (Coil) sesnor error (Open or Closed circuit - resistance is emasured in kΩ
F08Outdoor unit TO (Ambient) sesnor error (Open or Closed circuit - resistance is measured in kΩ
F10Indoor unit TA (Return Air) sesnor error )Open or Closed circuit - resistance is measure in kΩ
F29Indoor unit PCB failure
H01Outdoor unit inverter compressor over current detected
H02Master outdoor unit over current detected shortly after start up
H03Current detected on Master outdoor unit whilst idle
H06Outdoor unit Low pressure detected by Ps sensor (0.2 bar -n 2.9 psig)
L03Indoor unit Duplicated master indoor units in a group
L07Indoor unit in a group of units previously addressed as a single unit - check addressing
L08Indoor units addresses not set - check addressing
L09Indoor units capacity not set (check DN Code 11)
L29Outdoor unit IPDU error (Number of detected IPDU units is reduced)
L30Input on indoor PCB CN80 circuit for 1 minute
L31Outdoor unit PCB error
P01Indoor unit fan motor error
P03Outdoor unit High discharge temperature (TD1 exceeded 115°C)
P04Outdoor unit High pressure switch activated (Detected by high temperature on TE sensor on digital/super digital inverter units)
P07Outdoor unit PCB heat sink overheated (Temperature over 90°C recorded)
P10Indoor unit Float switch activated
P12Indoor unit fan motor error - detected by feedback circuit
P19Wrong change in temperature recorded (4 way valve error)
P22Outdoor unit fan motor IPDU error
P26Outdoor unit Giant transistor short circuit
P29Outdoor unit Compressor error detected by feedback circuit
P30Indoor unit Group control follower unit error / duplicated central control addresses
P31Indoor unit PCB error
C05Central control Sending error in TCC-Link central control device
C06Central control Receive error in TCC-Link central control device
C12Batch alarm for general purpose equipment interface

Error mode detected by indoor unit




Error CodesCause of errors
E03No communication from remote controller (including wireless) and communication adapter
E04The serial signal is not output from outdoor unit to indoor unit. Miswiring of inter-unit wire. Defective serial sending circuit on outdoor P.C. board. Defective serial receiving circuit on indoor P.C. board.
E08Duplicated indoor unit address
L03Duplicated indoor master unit
L07There is group wire in individual indoor unit.
L08Unset indoor group address
L09Unset indoor capacity
L30Abnormal input of outside interlock
P10Float switch operation. Float circuit, Disconnection, Coming-off, Float switch contact error
P12Indoor DC fan error
P194-way valve system error.
P31Own unit stops while warning is output to other indoor units.
F01
Coming-off, disconnection or short of indoor heat exchanger temp. sensor (TCJ)
F02Coming-off, disconnection or short of indoor heat exchanger temp. sensor (TC)
F10Coming-off, disconnection or short of indoor heat exchanger temp. sensor (TA)
F29Indoor EEPROM error. Check indoor P.C. board.
E10Communication error between indoor MCU
E11 Communication error between Application and indoor unit
E18Regular communication error between indoor master and follower units and between main and sub units

 

Toshiba Air Conditioner Indoor Display Panel
Toshiba Air Conditioner Indoor Display Panel

Error mode detected by outdoor unit




Error CodesCause of errors
F04Disconnection, short of discharge temp. sensor (TD)
F06Disconnection, short of heat exchanger temp. sensor (TE)
F07Disconnection, short of heat exchanger temp. sensor (TL)
F12Disconnection, short of suction temp. sensor (TS)
F15Miss-mounting of outdoor temp. sensor (TE, TS)
F08Disconnection, short of outside air temp. sensor (TO)
F13Disconnection, short of heat sink temp. sensor (TH)
F31Outdoor EEPROM error
L10Unset model type of service P.C. board
P07Heat sink overheat error
P15Detection of gas leak
P194-way valve inverse error
H01Compressor break down
H02Compressor lock
H03Current detection circuit error
H04Case thermostat operation. Abnormal overheat of compressor
P03Discharge temp. error
P04High pressure SW system error
P05Power supply voltage error
P20High pressure protective operation
P22Outdoor fan system error
P26Short-circuit error of compressor driving element
P29Position detection circuit error

Toshiba Multi VRF AC Error Codes: 




In addition to the check code on the remote controller of the indoor unit, a trouble of the outdoor unit can be diagnosed by 7-segment display of the control P.C. board of the outdoor unit. Make good use of this function for various checks. After check, return each bit of Dip switch to OFF position.

Toshiba Multi VRF AC Error Codes
Toshiba Multi VRF AC Error Codes
Error CodesCause
E06Decrease of number of indoor units
E07Indoor/Outdoor communication circuit error
E08Duplication of indoor addresses
E12Automatic address start error
E15Indoor is nothing during automatic addressing
E16Capacity over / Number of connected indoor units
E19Number of header outdoor units error
E20Other line connected during automatic addressing
E23Sending error between outdoor units communication
E25Duplicated follower outdoor address setup
E26Decrease of connected outdoor units
E28Follower outdoor unit error
E31IPDU communication error
F04TD1 sensor error
F05TD2 sensor error
F06TE1 sensor error
F07TL sensor error
F08TO sensor error
F12TS1 sensor error
F13TH sensor error
F15Outdoor temp. sensor miswiring (TE, TL)
F16Outdoor pressure sensor miswiring (Pd, Ps)
F23Ps sensor error
F24Pd sensor error
F31Outdoor EEPROM error
H01Compressor breakdown
H02Magnet switch error
H03Current detective circuit system error
H04Compressor 1 case thermo operation
H06Low-pressure protective operation
H07Oil level down detection protection
H08Temp sensor error for oil level detection
H14Compressor 2 case thermo operation
H16Magnet switch error
L04Outdoor system address duplicated
L06Duplication of indoor units with priority
L08Indoor group/Address unset
L10Outdoor capacity unset
L28Outdoor connected quantity over
L29IPDU quantity error
L30External interlock of indoor unit
L31Extended I/C error
P03Discharge temp TD1 error
P04High-pressure SW system operation
P05Phase missing detection / Phase order error
P07Heat sink overheat error
P10Indoor overflow error
P13Outdoor liquid back detection error
P15Gas leak detection
P17Discharge temp. TD2 error
P194-way valve inverse error
P20High-pressure protective operation
P22Outdoor fan IPDU error
P26IGBT short protection error
P29Compressor position detective circuit system error



toshiba multi system air conditioner error codes
toshiba multi system air conditioner error codes
toshiba multi system air conditioner error codes
toshiba multi system air conditioner error codes



Toshiba Air Conditioner Remote Control Display Meaning
Toshiba Air Conditioner Remote Control Display Meaning

 

Toshiba Portable AC Error Codes: 

Shows the set temperature in °C (Degrees Celsius) or °F (Degrees Fahrenheit) and the Auto-timer settings. While on DRY and FAN modes, it shows the room temperature.

Toshiba Portable AC Error Codes
Toshiba Portable AC Error Codes

Shows Error codes and protection code:

  • E1 – Room temperature sensor error.
  • E2 – Evaporator temperature sensor error.
  • E3 – Condenser temperature sensor error (select models).
  • E4 – Display panel communication error.
  • P1 – Bottom tray is full – Connect the drain hose and drain the collected water away.If protection code repeats, call for service



Error codes and parts to be checked

E01,E02,E03,E04,E06,E09,E10,E18,E31,F01,F02,F04,F06,F07,F08,F10,F12,F13
E01,E02,E03,E04,E06,E09,E10,E18,E31,F01,F02,F04,F06,F07,F08,F10,F12,F13
F13,F15,F29,F31,H01,H02,H03,H04,H06,L03,L07,L06,L07,L08,L09,L10
F13,F15,F29,F31,H01,H02,H03,H04,H06,L03,L07,L06,L07,L08,L09,L10
L20,L29,L30,L31,P01,P03,P04,P05,P07,P10,P15,P19,P20,P22,P26,P29,P31
L20,L29,L30,L31,P01,P03,P04,P05,P07,P10,P15,P19,P20,P22,P26,P29,P31

Troubleshooting




Poor cooling or heating performance

  • The air inlet or outlet of the outdoor unit is blocked.
  • Doors or windows are opened.
  • The air filter is clogged with dust.
  • The louver is not at the correct position.
  • The fan speed is set to low.
  • The air conditioner is set to the DRY or SLEEP MODE.
  • The temperature setting is too high (during cooling operation).
  • The temperature setting is too low (during heating operation). (heat pump models)

Condensation forms on the back of the indoor unit




Condensation on the back of the indoor unit is automatically collected and drained out.

Indoor unit or outdoor unit makes a strange noise

When the temperature changes sharply, the indoor or outdoor unit may make a strange noise (such as a tit-tack noise or flowing noise) because of the expansion/contraction of parts or change in refrigerant flow.

The room air smells.

A bad odor comes from the air conditioner.

  • Smells absorbed in the wall, carpet, furniture, clothing, or furs are coming out.
  • During PURE operation, a small amount of ozone is produced, and you might notice the smell.

The OPERATION indicator turns on and off

The indicator turns on and off (1 Hz) when power is restored after a power failure or when the power main switch is set to on. Reset the circuit breaker to ON.

A white mist of chilled air or water is generated from the outdoor unit.

Steam is sometimes generated from the indoor unit during cooling operation or the outdoor unit during defrosting operation.

The FILTER indicator turns on

  • This indicator turns on after PURE operation has been performed for approximately 1000 hours.
  • The indicator may turn on if the front panel is not firmly closed.
  • The indicator may turn on if the plasma pure filter is not securely attached.

Sounds made from the indoor unit

  • The plasma pure filter may make a humming, clicking, or buzzing sound when it is dirty.
  • When the power is turned on or the air conditioner is stopped, the vertical air louvers may make a rattling sound or shuttling sound.
  • Some parts may expand or shrink due to temperature fluctuations, and this can result in a slapping sound.
  • When the refrigerant is flowing, a hissing sound or gurgling sound can result.
  • A hissing sound can be made when the air conditioner is switched to defrosting operation during heating operation
Toshiba AC Wiring Diagram RAS-B10N3KV2-E1 RAS-10N3AV2-E1
Toshiba AC Wiring Diagram RAS-B10N3KV2-E1 RAS-10N3AV2-E1

Toshiba Installation Manual PDF

Toshiba Wall Type Air Conditioning MANUAL

Toshiba Multi System AC Service Manual PDF – 1

Toshiba Multi System AC Service Manual – 2



 




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