11-4-2. Caution at Servicing

1.After servicing, push the START/STOP button to return to the normal mode.

2.After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.

However, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.

3.After servicing, push [CLR] button under check mode status and then send the check code “7F” to the indoor unit. The error code stored in memory is cleared.

Table 11-4-1

Block distinction

 

Operation of diagnosis function

 

 

 

 

 

 

 

 

 

Judgment and action

Check

 

Check

 

Air

 

 

Block

Cause of operation

conditioner

 

Remarks

 

code

code

 

 

 

 

status

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor P.C.

 

Short-circuit or discon-

Operation

 

Displayed when

1. Check the room temp. sensor.

 

board etc.

 

nection of the room

continues.

 

error is detected.

2. When the room temp. sensor is

 

 

 

temperature sensor

 

 

 

 

 

 

 

 

 

normal, check P.C. board.

 

 

 

(TA sensor).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Being out of place,

Operation

 

Displayed when

1. Check heat exchanger sensor.

 

 

 

disconnection, short-

continues.

 

error is detected.

2. When heat exchanger sensor is

 

 

 

circuit, or migration of

 

 

 

 

 

 

 

 

 

normal, check P.C. board.

 

 

 

heat exchanger sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

(TC sensor)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Being out of place,

Operation

 

Displayed when

1. Check heat exchanger sensor.

 

 

 

disconnection, short-

continues.

 

error is detected.

2. When heat exchanger sensor is

 

 

 

circuit, or migration of

 

 

 

 

 

 

 

 

 

normal, check P.C. board.

 

 

 

heat exchanger sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

(TCJ sensor)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lock of indoor fan or

All off

 

Displayed when

1. Check the motor.

 

 

 

trouble on the indoor fan

 

 

error is detected.

2. When the motor is normal,

 

 

 

circuit

 

 

 

 

 

 

 

 

 

check P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Not

 

Trouble on other indoor

Operation

 

Displayed when

Replace P.C. board.

 

displayed

 

P.C. boards

continues.

 

error is detected.

 

 

 

 

 

 

 

 

 

 

Connecting

 

Return serial signal is not

Operation

 

Flashes when

1. When the outdoor unit never

 

cable and

 

sent to indoor side from

continues.

 

trouble is detected

operate:

 

serial signal

 

operation started.

 

 

on Return serial

1) Check connecting cable, and

 

 

 

1) Defective wiring of

 

 

signal, and normal

 

 

 

 

 

correct if defective wiring.

 

 

 

 

 

status when signal

 

 

 

connecting cable

 

 

2) Check 25A fuse of inverter

 

 

 

 

 

is reset.

 

 

 

2) Operation of compres-

 

 

 

 

 

 

 

P.C. board.

 

 

 

 

 

 

 

 

 

sor thermo Gas

 

 

 

3) Check 3.15A of inverter P.C.

 

 

 

shortage Gas leak

 

 

 

 

 

 

 

 

 

board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. To display [Other] block during

 

 

 

 

 

 

 

operation, check compressor

 

 

 

 

 

 

 

thermo. operation and supply

 

 

 

 

 

 

 

gas (check gas leak also).

 

 

 

 

 

 

 

3. Unit operates normally during

 

 

 

 

 

 

 

check.

 

 

 

 

 

 

 

If return serial signal does not

 

 

 

 

 

 

 

stop between indoor terminal

 

 

 

 

 

 

 

board 2 and 3, replace inverter

 

 

 

 

 

 

 

P.C. board.

 

 

 

 

 

 

 

If signal stops between indoor

 

 

 

 

 

 

 

terminal board 2 and 3, replace

 

 

 

 

 

 

 

indoor P.C. board.

 

 

 

 

 

 

 

 

– 73 –

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Toshiba RAS-B10SKVP-E, RAS-B13SKVP-E Block distinction, Judgment and action, Air Block Cause of operation, Remarks, Status

RAS-10SAVP-E, RAS-B10SKVP-E, RAS-B13SKVP-E specifications

Toshiba has established itself as a leader in the HVAC market, known for its innovative technologies and reliable performance. Among its range of air conditioning units, the Toshiba RAS-B10SKVP-E, RAS-10SAVP-E, and RAS-B13SKVP-E models stand out for their efficiency and advanced features.

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