14-3. Check Code Table

Error mode detected by indoor unit (1)

Operation of diagnostic function

Block

Check

 

Status of air

Judgment and measures

Cause of operation

Condition

display

code

conditioner

 

 

[MODE] [TIMER] lamp 5Hz flash

The serial signal is not output

Operation

Displayed when

1. Outdoor unit does not completely

from outdoor unit to indoor unit.

continues

error is detected

operate.

Miscabling of inter-unit cables

 

 

Inter-unit cable check, correction of

Defective serial sending

 

 

miscabling

 

 

 

circuit on outdoor P.C. board

 

 

Outdoor P.C. board check, P.C. board

Defective serial receiving

 

 

cables check

 

 

 

circuit on outdoor P.C. board

 

 

Compressor case thermo check

Compressor case thermo

 

 

2. In normal operation

operation

 

 

When outdoor sending serial LED

 

 

 

 

 

 

(Green) flashes, the receiving serial

 

 

 

LED (Orange) also flashes. : Indoor

 

 

 

P.C. board (Main P.C. board) check

 

 

 

When the receiving serial LED

 

 

 

(Orange) does not flash: Outdoor P.C.

 

 

 

board check

BUS communication circuit error

*BUS communication was interrupted over the specified time.

Operation

Displayed when

1. Communication line check, miscabling

continues

error is detected

check

(According

 

Power supply check for central

to remote

 

controller (Central control remote

controller of

 

controller, etc.) and indoor unit

indoor unit)

 

2. Communication check (XY terminal)

 

 

 

 

3. Indoor P.C. board check

 

 

4. Central controller check

 

 

(Communication P.C. board)

Network address miss-setting Operation

Displayed when

1. Check central control system network

Addresses of central

continues

error is detected

address setting. (SW02)

 

 

 

controllers (Central control

 

 

2. Indoor P.C. board check

remote controller, etc.) are

 

 

3. Central controller check

duplicated.

(Communication P.C. board)

 

Error in 4-way valve system

Indoor heat exchanger temperature rise after start of cooling operation.

Indoor heat exchanger temperature fall after start of heating operation.

Operation

Displayed when

continues

error is detected

1.Check 4-way valve.

2.Check 2-way valve and non-return valve.

3.Check indoor heat exchanger sensor (TC).

4.Check indoor P.C. board (Main P.C. board).

Error in other cycles

Indoor heat exchanger temp (TC) does not vary after start of cooling/heating operation.

*

Operation

Displayed when

continues

error is detected

1.Compressor case thermo operation

2.Coming-off of detection part of indoor heat exchanger sensor

3.Check indoor heat exchanger sensor (TC).

4.Check indoor P.C. board (Main P.C. board).

[MODE] lamp

Coming-off, disconnection or

Operation

Displayed when

1. Check indoor temp sensor (TA).

5Hz flash

short of indoor temp sensor

continues

error is detected

2. Check indoor P.C. board (Main P.C.

 

(TA)

 

 

board).

 

 

 

 

 

Coming-off, disconnection or

Operation

Displayed when

1. Check indoor temp sensor (TC).

 

short of indoor temp sensor

continues

error is detected

2. Check indoor P.C. board (Main P.C.

 

(TC)

 

 

board).

 

 

 

 

 

Coming-off, disconnection or

Operation

Displayed when

1. Check indoor temp sensor (TCJ).

 

short of indoor temp sensor

continues

error is detected

2. Check indoor P.C. board (Main P.C.

 

(TCJ)

 

 

board).

 

 

 

 

*: No display in the setting at shipment

118

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Toshiba RAV-SM560BT-E, RAV-SM800AT-E, RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM560AT-E, RAV-SM800BT-E Check Code Table, 118

RAV-SM800BT-E, RAV-SM560BT-E, RAV-SM560AT-E, RAV-SM560UT-E, RAV-SM800UT-E specifications

Toshiba offers a range of innovative air conditioning units designed for optimal performance and efficiency, including the RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM800AT-E, RAV-SM560BT-E, and RAV-SM800BT-E models. Each of these units is part of Toshiba's commitment to quality air conditioning solutions that cater to both residential and commercial spaces.

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