Check Code List

Error mode detected by indoor unit

 

 

Operation of diagnostic function

 

 

 

 

 

 

 

 

 

 

 

 

Judgment and measures

Check

 

Cause of operation

 

Status of

 

Condition

 

 

 

 

 

 

 

 

 

 

code

 

 

air conditioner

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No communication from remote

 

Stop

 

Displayed when

1.

Check cables of remote controller and communication adapters.

E03

 

 

 

 

• Remote controller LCD display OFF (Disconnection)

 

controller (including wireless) and

 

 

 

 

 

(Automatic reset)

 

error is detected

 

 

 

communication adapter

 

 

 

• Central remote controller [97] check code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The serial signal is not output from

 

 

 

 

1.

Outdoor unit does not completely operate.

 

 

outdoor unit to indoor unit.

 

 

 

 

 

Inter-unit wire check, correction of miswiring

 

 

• Miswiring of inter-unit wire

 

 

 

 

 

 

 

 

Stop

 

Displayed when

 

• Check outdoor P.C. board. Correct wiring of P.C. board.

E04

 

• Defective serial sending circuit on

 

 

 

 

 

(Automatic reset)

 

error is detected

2. When outdoor unit normally operates

 

 

 

 

 

 

outdoor P.C. board

 

 

 

 

 

Check P.C. board (Indoor receiving / Outdoor sending).

 

 

• Defective serial receiving circuit on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

indoor P.C. board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E08

 

Duplicated indoor unit address

 

 

 

 

1.

Check whether remote controller connection (Group/Individual)

 

 

 

 

 

 

 

 

was changed or not after power supply turned on

 

 

 

 

 

 

 

 

L03

 

Duplicated indoor header unit

 

 

 

Displayed when

 

(Finish of group construction/Address check).

 

 

 

 

Stop

 

 

* If group construction and address are not normal when the

 

 

 

 

 

 

 

 

There is group wire in individual indoor

 

 

error is detected

 

L07

 

 

 

 

power has been turned on, the mode automatically shifts to

 

 

 

 

 

 

 

 

 

 

 

 

 

unit.

 

 

 

 

 

address setup mode. (Resetting of address)

 

 

 

 

 

 

 

 

 

L08

 

Unset indoor group address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L09

 

Unset indoor capacity

 

Stop

 

Displayed when

1. Set indoor capacity (DN=11)

 

 

 

error is detected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L30

 

Abnormal input of outside interlock

 

Stop

 

Displayed when

1. Check outside devices.

 

 

 

error is detected

2.

Check indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Float switch operation

 

 

 

 

1.

Trouble of drain pump

P10

 

 

Stop

 

Displayed when

2. Clogging of drain pump

 

• Float circuit, Disconnection,

 

 

 

 

 

error is detected

3.

Check float switch.

 

 

 

 

 

 

 

Coming-off, Float switch contact error

 

 

 

 

 

 

 

 

 

 

4.

Check indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

Position detection error

P12

 

Indoor DC fan error

 

Stop

 

Displayed when

2. Indoor fan driving part over-current protective circuit operation

 

 

 

error is detected

3.

Indoor fan lock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Indoor P.C. board check

 

 

 

 

 

 

 

 

 

 

 

4-way valve system error

 

 

 

 

1.

Check 4-way valve.

 

 

 

Stop

 

Displayed when

2. Check 2-way valve and check valve.

P19

 

• After heating operation has started,

 

 

 

 

(Automatic reset)

 

error is detected

3.

Check indoor heat exchanger (TC/TCJ).

 

 

indoor heat exchangers temp. is

 

 

 

 

 

 

 

 

 

 

down.

 

 

 

 

4.

Check indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Own unit stops while warning is output

 

Stop

 

Displayed when

1.

Judge follower unit while master unit is [E03], [L03], [L07] or [L08].

P31

 

 

(Follower unit)

 

2.

Check indoor P.C. board.

 

to other indoor units.

 

 

error is detected

 

 

 

(Automatic reset)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F01

 

Coming-off, disconnection or short of

 

Stop

 

Displayed when

1.

Check indoor heat exchanger temp. sensor (TCJ).

 

indoor heat exchanger temp. sensor

 

 

2. Check indoor P.C. board.

 

 

(Automatic reset)

 

error is detected

 

 

(TCJ)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Coming-off, disconnection or short of

 

Stop

 

Displayed when

1.

Check indoor heat exchanger temp. sensor (TC).

F02

 

indoor heat exchanger temp. sensor

 

 

2. Check indoor P.C. board.

 

 

(Automatic reset)

 

error is detected

 

 

(TC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F10

 

Coming-off, disconnection or short of

 

Stop

 

Displayed when

1.

Check indoor heat exchanger temp. sensor (TA).

 

indoor heat exchanger temp. sensor

 

 

2. Check indoor P.C. board.

 

 

(Automatic reset)

 

error is detected

 

 

(TA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F29

 

Indoor EEPROM error

 

Stop

 

Displayed when

1. Check indoor EEPROM. (including socket insertion)

 

• EEPROM access error

 

(Automatic reset)

 

error is detected

2.

Check indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Communication error between indoor

 

Stop

 

 

1.

Check indoor P.C. board.

E10

 

MCU

 

 

Displayed when

 

 

 

• Communication error between fan

 

(Automatic reset)

 

error is detected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

driving MCU and main MCU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Regular communication error between

 

Stop

 

Displayed when

1.

Check remote controller wiring.

E18

 

 

 

2.

Check indoor power supply wiring.

 

indoor header and follower units

 

(Automatic reset)

 

error is detected

 

 

 

 

3.

Check indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 48 –

Page 48
Image 48
Toshiba CEILING TYPE, CONCEALED DUCK TYPE service manual Check Code List, Error mode detected by indoor unit

CONCEALED DUCK TYPE, CEILING TYPE specifications

Toshiba has long been a name associated with innovative and efficient HVAC solutions, and their Concealed Duck Type, Ceiling Type air conditioning units exemplify this legacy. These units are designed to provide exceptional comfort while seamlessly integrating into a variety of interior spaces.

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Furthermore, these units are designed for reliability and ease of maintenance. Toshiba emphasizes durability in their construction, and the concealed installation not only enhances aesthetics but also protects the unit from potential damage. Routine maintenance can be performed efficiently, ensuring longevity and sustained performance.

In summary, Toshiba's Concealed Duck Type, Ceiling Type air conditioning units deliver a blend of innovative technology, energy efficiency, and contemporary design. With features like inverter technology, quiet operation, advanced air filtration, and flexible control options, they offer a compelling choice for those seeking comfort without compromising style. These units stand as a testament to Toshiba's commitment to quality and customer satisfaction in the HVAC industry.