TROUBLESHOOTING <WALL TYPE>. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E

Toshiban lämmitys- ja jäähdytyslaitteiden jälleenmyyjä pääkaupunkiseudulla on Jäähdytinpalvelu RefGroup Oy

14. TROUBLESHOOTING <WALL TYPE>

14-1. Summary of Troubleshooting

<Wired remote controller type>

1. Before troubleshooting

1) Required tools/instruments

•

+ and

–

screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch

•

Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check

The following operations are normal.

a) Compressor does not operate.

•

Is not 3-minutes delay (3 minutes after compressor OFF)?

•

Does not thermostat turn off?

•

Does not timer operate during fan operation?

•

Is not detected an overflow error?

•

Is not outside high-temperature operation controlled in heating operation?

b) Indoor fan does not rotate.

•

Does not cool air discharge preventive control work in heating operation?

c) Outdoor fan does not rotate or air speed changes.

•

Does not high-temperature release operation control work in heating operation?

•

Does not outside low-temperature operation control work in cooling operation?

•

Is not defrost operation performed?

d) ON/OFF operation cannot be performed from remote controller.

•

Is not during emergency operation?

•

Is not the control operation performed from outside/remote side?

Did you return the cabling to the initial positions?

Are connecting cables of indoor unit and remote controller correct?

2. Troubleshooting procedure

When a trouble occurred, check the parts along with the following procedure.

Trouble

→

Confirmation of check code display

→

Check defective position and parts.

NOTE :

For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer noise is considered except the items to be checked. If there is any noise source, change the cables of the remote controller and the signal line to shield cables.

–

108

– www.ilmalämpöpumput.com


(a) Outline of Judgment

A primary judgment to detect cause of error exists on the indoor unit or outdoor unit is performed in the following procedure.

<Judgment by flashing display on the indoor unit display part>

The indoor unit monitors operating status of the air conditioner, and if a protective circuit works, contents of the self-diagnosis are displayed with a block restricted to the following cases on the indoor unit display part.

Remote controller code

—

Block display

Operation lamp display flashes. (1Hz)

00 Operation lamp display flashes. (5Hz)

01

02

03

—

Operation/timer lamp displays flash. (5Hz)

Operation/defrost lamp displays flash. (5Hz)

Operation/timer/defrost lamp displays flash. (5Hz)

——

Contents of self-diagnosis

Power failure (In power ON)

Indoor P.C. board

Inter-unit cables/transmission system

Outdoor P.C. board

Cycle system, etc.

——

Check code

——

0b to 0F, 11, 12, b5, b6

04

14 to 19, 1A, 1C

1d, 1E, 1F, 21

1b, 8b

(b) Self-diagnosis by check code on the remote controller

Refer to

“

Judgment of error mode by check code on the remote controller

”

.

<Wireless remote controller type>

1. Before troubleshooting

1) Required tools/instruments

•

+ and

–

screwdrivers, spanners, radio cutting pliers, nippers, etc.

•

Tester, thermometer, pressure gauge, etc.

2) Confirmation points before check

The following operations are normal.

a) Compressor does not operate.

•

Is not 3-minutes delay (3 minutes after compressor OFF)?

•

Does not thermostat turn off?

•

Does not timer operate during fan operation?

•

Is not outside high-temperature operation controlled in heating operation?

b) Indoor fan does not rotate.

•

Does not cool air discharge preventive control work in heating operation?

c) Outdoor fan does not rotate or air volume changes.

•

Does not high-temperature release operation control work in heating operation?

•

Does not outside low-temperature operation control work in cooling operation?

•

Is not defrost operation performed?

d) ON/OFF operation cannot be performed from remote controller.

•

Is not forced operation performed?

•

Is not the control operation performed from outside/remote side?

Did you return the cabling to the initial positions?

Are connecting cables between indoor unit and receiving unit correct?

–

109



2. Troubleshooting procedure

When a trouble occurred, check the parts along with the following procedure.

Trouble

→

Confirmation of check code by service mode

→

Check defective position and parts.

NOTE :

For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer noise is considered except the items to be checked. If there is any noise source, change the cable of the signal line to shield cable.

(a) Outline of Judgment

A primary judgment to detect cause of error exists on the indoor unit or outdoor unit is performed in the following procedure.

<Judgment by flashing display on the indoor unit display part>

The indoor unit monitors operating status of the air conditioner, and if a protective circuit works, contents of the self-diagnosis are displayed with a block restricted to the following cases on the indoor unit display part

(Sensors).

Remote controller code

—

Block display


00

01


Operation/timer lamp displays flash. (5Hz)

02

03

—

Contents of self-diagnosis

Power failure (In power ON)

Indoor P.C. board

Inter-unit cables/transmission system

Operation/defrost lamp displays flash. (5Hz) Outdoor P.C. board

Operation/timer/defrost lamp displays flash. (5Hz)

——

Cycle system, etc.

——

Check code

——

0b to 0F, 11, 12, b5, b6

04

14 to 19, 1A, 1C

1d, 1E, 1F, 21

1b, 8b

(b) Self-diagnosis by check code on the remote controller

In the wireless type models, the self-diagnosis for the protective circuit operation is performed by handling the remote controller. First change the operation mode of the remote controller, and then perform the selfdiagnosis by the displayed contents of the remote controller and the existence of operation lamp flashing

(5Hz) and buzzer sound (Pi, Pi, Pi). During self-diagnosis operation, the timer lamp usually flashes (5Hz).

Selection of remote controller operation mode

1) Selection of service mode

Push the select button at lower side of the wireless remote controller with a tip of pencil, etc. for approx. 3 seconds or more. In this time, check that [00] is displayed on the room temp. display part and other displays go off.

2) Selection of normal mode

Push the reset button at lower side of the wireless remote controller with a tip of pencil, etc. In this time, check that [

“

AM

”

] display on the time display part flashes.

Cautions in service

1) After service work, be sure to push the reset button to return the mode to normal mode.

2) After service by the check codes, turn off the power switch once and then turn on the switch to return the stored memory in microcomputer to the initial status.

–

110



(c) Self-diagnosis with remote controller

With the indoor unit control, self-diagnosis of protective circuit action can be done by turning the remote controller operation into service mode, operating the remote controller, observing the remote controller indicators and checking whether TIMER lamp flashes (5 Hz).

NOTE :

• To perform this self-diagnosis, the remote controller with the service code of 43069666 is required.

<How to select remote control operation mode>

1. Selecting service mode

Push the switch button provided on rear bottom of the wireless remote control with a tip of pencil for more than 3 seconds. Make sure the setting temperature

“ ”

is displayed on the display and other display is turned off.

2. Selecting ordinary mode

Push the all clear button (ACL) on the rear bottom of the wireless remote controller with a tip of pencil for more than 3 seconds. Make sure the operation mode display, wind volume display, clock display and setting temperature display are turned on and

“

:

”

of the clock display is flashing.

<Cautions when doing service>

1. After completion of servicing, always push the all clear (ACL) button to return the operation mode to the normal mode.

2. After completion of servicing by the check code, turn off the power once and then turn on the power to reset memorized contents of the microcomputer to the initial status.

All clear button

Switch for selecting service mode

ACL CLOCK

ACL CLOCK

(Rear bottom of remote control)

Rear bottom cover

–

111



<Self-diagnosis by check codes>

1. The self-diagnosis by the check codes is conducted under the block displays.

2. Remote controller key operation under the service mode is conducted by ON/OFF or TEMP. The remote controller display by each key operation is varied as shown below. Two digit number is displayed in a hexadecimal number.

3. The self-diagnosis by the check codes is conducted with procedures shown below.

1) Enter the service mode and make sure the off timer display of the remote controller shows

“ ”

.

2) Operate the

“

ON/OFF

”

key and make sure the timer lamp on the display section is flashing (5 Hz).

3) At the same time, also make sure the operation lamp is also flashing. This shows that the protection circuit on the indoor P.C. board is working.

4) Operate the TEMP. key and make sure the remote controller display shows “ ” and flashing of the operation lamp. If the operation lamp is flashing, it shows the protection circuits for connecting cable is working or thermal fuse is blown.

5) In the same way, operate the TEMP. key so that the display is increased one by one to continue checks by the self-diagnosis as shown in the next table. From

“ ”

up to “ ” check operations of protection circuits for each block, and

“ ”

to

“ ”

check operations of the typical protection circuits.

Operating key

ON/OFF

Indication after operation

“

”

TEMP. (Up)

TEMP. (Down)

“

AUTO

”

LOUVER

“

SET

”

LOUVER

1 is added to data before operation.

(Example)

1 is subtracted from data before operation.

(Example)

10 is subtracted from data before operation.

(Example)

“

“

Data before operation is directly transferred.

(Example)

“

“ ” “

”

” “

” “

“

”

”

”

”

–

112



14-2. Troubleshooting with CHECK Display of Remote Controller

14-2-1. In case of main remote controller/sub-remote controller A

RBC-AM1E RBC-AS1E

1. Operation for CHECK display

When pushing the CHECK switch, the indoor unit No. (Group address No.) which sends the check code is displayed at the right side of the set up TEMP. display section, and the check data of 2 errors/faults x 16 units is displayed in the set up temp. display section.

If there is a filter display, the indoor unit No. which sends the filter signal is displayed at the right side of the set up temp. display section, and then the check code is displayed as described above.

(1 display for 3 seconds)

F A N

CHECK ADDRESS

UNIT

1 2

H E AT AU TO

CENTRAL

FILTER

PREHEA

DEFROST

L O U V E R

M A N UA L

MODE

FILTER CHECK

ON/OFF

LCD display “STANDBY” is present.

• When phase-sequence of power wiring is incorrect

• When combination of indoor units is over capacity

• Indoor unit with command excepted by operation mode select switch

• When there is an indoor unit which stopped with the indoor overflow alarm “0b”.

• Indoor unit with cooling operation command excepted by heating priority control

RESET switch

Push the switch in the hole with pin.

The remote controller resets the power supply.

(All data is cleared.)

CHECK switch

Push for 0.5 seconds to display CHECK code.

Push for 3 seconds to reset indoor microprocessor.

(While indoor microprocessor is locked by ALL STOP alarm)

Push for 10 seconds to clear check data.

–

113



2. Reading of CHECK monitor display

<7 segment display>

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Hexadecimal notation

Decimal notation

<Display on CHECK monitor>

CHECK

1 2

UNIT

FILTER

FILTER sign

Indoor unit No.

CHECK code

<FILTER data>

(Example)

Case that Filter signal is sent from No.1 and No.16 units under group operation

UNIT

FILTER

UNIT

FILTER

<CHECK data>

(Example)

Room temp.sensor of No.1 is defective.

In No.16, first the heat exchanger sensor has failed.

Next, interconnection wire (serial signal line) of indoor/outdoor is defective.

CHECK

1

UNIT CHECK

1

UNIT CHECK

2

UNIT

(Example) There is no check data.

CHECK

–

114



14-2-2. Remote controller with timer

RBC-AM1E


When pushing the CHECK switch, the indoor unit No. (Group address No.) which sends the check code is displayed in the set up temp. display section, and check code is displayed in the TIME display section.

If FILTER display (air filter cleaning sign) is present, the indoor unit No. which sends the filter signal is displayed in the set up temp. display section, and then the check code is displayed. (1 display for 3 seconds)

LCD display STANDBY is present.

• When phase-sequence of power wiring is incorrect

• When combination of indoor units is over capacity.

• Indoor unit with command excepted by operation mode select switch

• When there is an indoor unit which stopped with the indoor overflow alarm “0b”.

• Indoor unit with cooling operation command excepted by heating priority control

MODE

FAN ONLY

COOL

HEAT

FAN

AUTO

HIGH

MED

LOW

FIX

PREHEAT

DEFROST

OPERATION

STANDBY

FILTER

TEMP

UNIT

CHECK

DEMAND

C

F

LOUVER

MANUAL

TIMER CONT.OFF ON ADDRESS

AFTER H M

REMOTE CONTROLLER

MODE

TIMER ADJUST

CHECK FILTER

ON/OFF

(This display is for remote control with timer.)

CHECK switch





RESET switch


The remote controller resets initialized.


–

115





0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


Decimal notation

<FILTER data>

(Example)

Filter signal is sent from No.1 and No.15 units under grouping operation

UNIT

CHECK

FILTER

UNIT

CHECK

FILTER

<CHECK data>

Unit No.

UNIT

CHECK

Check code detected at first Check code detected at last

(Example)

Room temp.sensor of No.1 is defective.

In No.15, first the indoor heat exchanger sensor has failed.

Next, interconnection wire (bus communication line) of indoor/outdoor is defective.

(Example)

There is no check data.

UNIT

CHECK

UNIT

CHECK CHECK

After 3 seconds

–

116



14-2-3. Central remote controller


When pushing the CHECK switch, the indoor unit No. (Network address No.) including the check data is displayed in the UNIT No. display section, and the check code is displayed in the set up temp. display section.

ON

MONITOR

SET

ZONE

ALL UNIT

ON

OFF

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

CENTER

LOCKED

MODE

FAN ONLY

COOL

DRY

HEAT

AUTO

AUX. TYPE

TIMER No.

FAN

AUTO

HIGH

MED.

LOW

FIX

LOUVER

MANUAL

STANDBY

FILTER

TEMP.

CHECK

1 C

2

MONITOR/SET ALL/ZONE ZONE UNIT ON CENTER/LOCKED MODE TEMP.

FILTER RESET CHECK

ZONE SET/ENTER SELECT OFF TIMER ON

FAN LOUVER

CHECK switch





RESET switch


The remote controller resets initialized.




0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


Decimal notation

<Display on CHECK monitor>

Unit line No. (Network address No.)

MONITOR

SET

ZONE

ALL UNIT

ON

OFF

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

CENTER

LOCKED

MODE

FAN ONLY

COOL

DRY

HEAT

AUTO

AUX. TYPE

TIMER No.

FAN

AUTO

HIGH

MED.

LOW

FIX

TEMP.

1

2

LOUVER

MANUAL

STANDBY

FILTER

CHECK

C

Check code detected at first

Check code detected at last

<CHECK data>

(Example)

There is no check data.

UNIT

TEMP.

CHECK

(Example)

In No.1 unit, first the interconnection wire (bus communication line) of indoor/outdoor has failed.

Next, the room temp. sensor is defective.

For No.16 unit, the high pressure switch at the inverter unit side operates.

UNIT UNIT UNIT

TEMP.

CHECK

1

TEMP.

CHECK

2

TEMP.

CHECK

1

–

117



14-3. Check Code Table

Error mode detected by indoor unit (1)

Block display

[MODE]

[TIMER] lamp

5Hz flash

[MODE] lamp

5Hz flash

Check code

*

Operation of diagnostic function

Cause of operation

Status of air conditioner

Error in other cycles

•

Indoor heat exchanger temp

(TC) does not vary after start of cooling/heating operation.

Coming-off, disconnection or short of indoor temp sensor

(TA)


(TC)

Operation continues

Operation continues

Operation continues

Condition

Judgment and measures

The serial signal is not output from outdoor unit to indoor unit.

•

Miscabling of inter-unit cables

•

Defective serial sending circuit on outdoor P.C. board

•

Defective serial receiving circuit on outdoor P.C. board

•

Compressor case thermo operation

Operation continues

Displayed when error is detected

1. Outdoor unit does not completely operate.

•

Inter-unit cable check, correction of miscabling

•

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

•

Compressor case thermo check

2. In normal 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 continues

(According to remote controller of indoor unit)


1. Communication line check, miscabling check

Power supply check for central controller (Central control remote controller, etc.) and 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

•

Addresses of central controllers (Central control remote controller, etc.) are duplicated.

Operation continues


1. Check central control system network address setting. (SW02)

2. Indoor P.C. board check

3. Central controller check

(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 continues


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).


1. Compressor case thermo operation

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

3. Check indoor heat exchanger sensor

(TC).


board).


1. Check indoor temp sensor (TA).


board).


1. Check indoor temp sensor (TC).


board).


(TCJ)

Operation continues


1. Check indoor temp sensor (TCJ).


board).

*

: No display in the setting at shipment

–

118




Block display

[MODE] lamp

5Hz flash

Check code




Error in indoor fan system

Revolutions frequency error of fan

All stop

Condition



1. Check indoor fan motor connector circuit (CN210).

2. Check indoor fan.


board).


1. Check indoor P.C. board

(EEPROM and peripheral circuits)

(Main P.C. board).

Error in indoor unit or other positions

1. EEPROM access error

Operation continues

Outside error input

Detected by input voltage level from outside devices

Operation continues

Outside interlock input

Detected by input voltage level from outside devices

All stop



1. Check outside devices.


board).


Check code




Condition

Serial return signal is not sent from No. 1 indoor unit to remote controller.

•

Miscabling of inter-unit cable between remote controller and indoor unit

•

Miss-setting of indoor unit No.

(Group address)

ON/OFF



1. Indoor unit does not completely operate.

•

Check inter-unit cable.

•

Check indoor P.C. board. (Main/Sub P.C. boards)

•

Check remote controller.

2. In normal operation

•

Check setting of indoor unit No.

(SW01) (Sub P.C. board)

•

Check remote controller.

–

119



Error mode detected by outdoor unit

Check code




Inverter over-current protective circuit operates.

(For a short time)

All stop

Condition



1. Inverter immediately stops even if restarted.

•

Compressor rare short

2. Check IPDU.

•

Cabling error

Error on current detection circuit

•

Current value is high at AC side even while compressor stops.

•

Phase of power supply is missed.

Coming-off, disconnection or short of outdoor temp sensor

All stop

All stop


1. Compressor immediately stops even if restarted.

: Check IPDU.

2. Phase-missing operation of power supply

•

Check power voltage of R, S, T.


Compressor drive output error

•

Tin thermistor temp, Tin error

(IPDU heat sink temp. is high.)

Communication error between

IPDU

•

Connector coming-off between CDB and IPDU

All stop

All stop

Compressor does not rotate.

(Over-current protective circuit works when constant time passed after activation of compressor.)

All stop

Discharge temp error

•

Discharge temp over specified value was detected.

All stop


1. Check outdoor temp sensor (TE, TS).

2. Check CDB.


1. Check outdoor temp sensor (TD).

2. Check CDB.


1. Abnormal overload operation of refrigerating cycle

2. Loosening of screws and contact error of IPDU and heat sink

3. Cooling error of heat sink

4. Check cabling of CDB and IPDU.



1. Compressor error (Compressor lock, etc.)

: Replace compressor.

2. Cabling trouble of compressor (Phase missing)

1. Check refrigerating cycle. (Gas leak)

2. Error of electron control valve

3. Check pipe sensor (TD).


1. Check power voltage. (AC200V±20V)

2. Overload operation of refrigerating cycle

3. Check current detection circuit at AC side.

Compressor breakdown

•

Operation frequency lowered and stops though operation had started.

All stop

High-voltage protection error by TE sensor

•

TE temp over specified value was detected.

All stop

DC outdoor fan motor error

•

IDC operation or lock was detected by DC outdoor fan driving.

All stop

Error on IPDU position detection circuit


All stop

Operation continues



1. Overload operation of refrigerating cycle

2. Check outdoor temp sensor (TE).

1. Position detection error

2. Over-current protection circuit operation of outdoor fan drive unit

•

Check CDB.

•

Refer to Judgment of outdoor fan.


1. Position detection circuit operates even if driving by removing 3P connector of compressor.

•

Replace IPDU.


1. Check outdoor temp sensor (TO).

2. Check P.C. board.

–

120



14-4. Troubleshooting for Each Check Code

[1A error]

Are connections of CN301 and

CN300 of CDB correct?

YES

Does the fan rotate without trouble when handling the fan with hands under condition of removing CN301 and CN300 from CDB?

YES

NO

The status that the resistance values between leads below are 50 to 80 for 40W motor (ICF-140-43) and 25 to 55 for 60W motor (ICF-140-63-1) is normal.

NO of motor winding of connector (CN301)

YES

The status that there is

5k to 20k resistance values between of motor position detection of connector

(CN300, CN302) is normal.

YES

NO

CN301

CN300

•

For RAV-SM560AT-E, CN300 changes to

CN301, and CN301 to CN300, respectively.

Normal fan motor Defective fan motor

(CDB error)

NOTE :

However, GND circuit error inside of the motor is rarely detected even if the above check is carried out.

When the circuit does not become normal even if P.C. board has been replaced, replace outdoor fan motor.

Objective P.C. board

Fan motor winding

Motor position detection

RAV-SM560AT-E

Control P.C. board

CN300

CN301

RAV-SM800AT-E

CDB P.C. board

CN301

CN300

–

121



[04 error]

NO

Does outdoor unit operate?

YES

Are 1, 2, 3 inter-unit cables normal?

YES

NO

Correct inter-unit cable.

Are connections of connectors normal?

YES

NO

Correct connection of connector.

Is DC310 to 340V applied between terminals of electrolytic capacitor of IPDU main circuit?

YES

* For RAV-SM560AT-E, check case thermo.

NO

Replace IPDU.

* For RAV-SM560AT-E, replace control P.C. board.

Is DC310 to 340V power supplied to CDB?

(CN03)

YES

NO

Replace IPDU.

NO

Does LED (D05) (Orange) on indoor main P.C. board flash?

YES

Is case thermo

(CN500) connected?

YES

NO


Does case thermo operate?

YES

NO

Check CDB.

Defect Replace


Check CDB.

Defect Replace


Check main indoor main P.C. board

(MCC-1370A).

Defect Replace

Check/Correct charged refrigerant amount.


–

122



[08 error]

Check and replace

2-way valve, check valve, or electron expansion valve.

Is operation of

4-way valve normal?

YES

NO

NO

Is flow of refrigerant by

2-way valve, check valve, or electron expansion valve normal?

YES

Is 200V applied to

4-way valve coil terminal in heating operation?

NO

YES

Check 4-way valve.

Is circuit cable normal?

YES

NO

Check and correct circuit.

NO

Are characteristics of TC sensor resistance value normal?

* Refer to Characteristics-2.

YES

Replace TC sensor.

Check indoor main P.C. board

(MCC-1370A) and sub P.C. board (MCC-1370B).

Defect Replace

* For RAV-SM560AT-E, check control P.C. board.

Check CDB P.C. board.

YES

NO

Check CDB P.C. board.

Defect Replace


•

In cooling operation, if high pressure is abnormally raised, [08 error] may be displayed. In this case, remove cause of pressure up and then check again referring to the item [21 error].

[0C error]

Is connection of TA sensor connector

(Indoor main P.C. board CN04) normal?

YES

NO

Are characteristics of

TA sensor resistance value normal?

YES

NO


Check indoor P.C. board

(MCC-1370A).

Defect Replace


Replace TA sensor.

–

123



[0d error]

Is connection of TC sensor connector

(Indoor P.C. board CN05) normal?

YES

NO


TC sensor resistance value normal?

YES

NO



(MCC-1370A).

Defect Replace


Replace TC sensor.

[0F error]

Is connection of TCJ sensor connector

(Indoor P.C. board CN20) normal?

YES

NO


TCJ sensor resistance value normal?

YES

NO



(MCC-1370A).

Defect Replace


Replace TCJ sensor.

–

124



[99 error]

Is inter-unit cable of

A, B and C normal?

YES

NO

Is there no disconnection or contact error of connector?

NO

YES

Is individual (1 : 1) operation?

NO

YES

NO

Is unit set to No.1?

YES

NO

Are not No.1 unit duplicated?

YES

NO

Does indoor unit operate?

YES

Correct inter-unit cable of remote controller.


Check circuit cables.

Does LED (Green) on indoor main P.C. board flash?

(D13)

NO

YES

Set the unit to No.1.

Avoid duplication of unit No.1 setting.

Check remote controller P.C. board.

Defect Replace

Check indoor main P.C. board

(MCC-1370A).

Defect Replace

–

125



[11 error]

Turn off the breaker once.

Turn on the breaker after approx. 10 seconds.

Does fan stop when operation stopped?

YES

NO

Is DC1V or more voltage applied between 5 + and 3

–

of the motor connector (CN210)?

YES

Start the operation with cooling mode [L (Low)].

NO

Does the fan rotate?

YES


–


YES

(Connection status of motor)


–


YES

Change the cooling mode to [H (High)].

NO

NO

Stop the operation and turn off the breaker.

After removing motor connector, turn on the breaker again and then stop the operation from remote controller.

NO

Is fan speed raised?

YES

Is DC15V voltage applied between 4 + and 3

–


YES


–

of the motor connector (CN210) when changing the operation mode (except HEAT)?

(Check within approx. 15 seconds after operation has started.)

NO

YES

NO

Stop the operation and disconnect the receptacle. After removing motor connector, connect receptacle again and then stop the operation from remote controller.

NO

Normal fan motor

NO


–

of the motor connector (CN210) when changing the operation mode (except HEAT)?

(Check within approx. 15 seconds after operation has started.)

YES

NO

Does the cross flow fan rotate normally when handled with hands?

YES

Does 0 to 5V voltage

(revolutions return signal) generate between 6 + and 3

–

of the motor connector (CN210) when rotating the cross flow fan with hands under condition of operation-stop?

YES

Repair bering of the cross flow fan.

NO

–

126


Replace indoor fan motor.

Replace indoor main P.C. board

(MCC-1370A).


(MCC-1370A).



(MCC-1370A).



[11 error]

Indoor fan starts rotating by inserting receptacle.

[Check output voltage (DC) of P.C. board fan motor.]

Measure the voltages of the motor connector

CN210 Pin 3 (GND (minus): Black) and Pin 5 (V line (plus): Yellow) under condition that indoor fan rotates.

DC1.0V or less DC1.0V or more

Defective indoor main P.C. board

(MCC-1370A)

Defective indoor fan motor

DC

CN210

Yellow

Black

P.C. board

6 (Blue)

5 (Yellow)

4 (White)

3 (Black)

2 –

1 (Red)

[12 error]

Is there no turbulence of power supply?

YES

Check indoor main P.C. board (MCC-1370A).

Defect Replace

NO

Check power voltage. Improve line.

Check and eliminate noise, etc.

– 127 – www.ilmalämpöpumput.com


[14 error]

Is power voltage normal?

YES

NO

Improve the power supply line.

YES

Are connections of cabling/connector normal?

YES

NO

* For RAV-SM560AT-E, check RY01 on the control P.C. board.

Check and correct circuit cables.


Check and correct reactor connection.

Does RY01 relay of

IPDU operate?

NO

YES

Is not

“

14

”

errors output when an operation is performed by removing 3P connector of compressor?

YES

* Single-phase type is not provided to RAV-SM560AT-E.

NO

Replace IPDU.

Is not AC fuse fused?

NO

* Replace control P.C. board of RAV-SM560AT-E.

Replace IPDU.

* Replace control P.C. board of RAV-SM560AT-E.

Is compressor normal?

YES

NO

Check IPDU.

Defect Replace

Check rare short of compressor trouble.

Defect Replace

[16 error]

Are connections of cable/connector normal?

YES

NO

NO


YES

YES

Is not earthed?

NO

Is not winding shorted?

(Is resistance between windings 0.6 to 1.2 ?)

NO

YES

YES

Is not winding opened?

NO

Check and correct circuit cabling such as cabling to compressor.

Compressor error Replace



Check IPDU P.C. board.

Defect Replace

–

128



[18 error]

Are connections of

TE/TS sensor connectors of

CDB CN604/CN605 normal?

YES

NO


Are characteristics of TE/TS sensor resistance values normal?

YES

* (For RAV-SM560AT-E, CN600 TE sensor and CN603 TS sensor)

NO

Replace TE and TS sensors.


Check CDB.

Defect Replace

* For RAV-SM560AT-E, replace the control P.C. board

[19 error]

Is connection of TD sensor connector of CDB CN600 normal?

YES

Are characteristics of TD sensor resistance value normal?

YES

NO


* For RAV-SM560AT-E, CN601 on control P.C. board

NO

Replace TD sensor.

Check control P.C. board.

Defect Replace


[1C error] * Except RAV-SM560AT-E

Are connections of

CDB CN800 and CDB IPDU CN06 connectors normal?

YES

NO

Was the error just after power ON determined?

NO

YES

Are cabling/connector normal?

YES

NO


Check cabling between IPDU and CDB and connector.

IPDU P.C. board error

Defect Replace

Is there no abnormal overload?

NO

YES

NO

Is IPDU P.C. board come to closely contact with heat sink?

YES

Improve and eliminate the cause.

Correct mounting.

IPDU P.C. board error

Defect Replace

–

129



[1d error]

NO


YES


YES

NO

NO


YES

Improve power line.

Check and correct circuit cabling such as cabling to compressor

(phase missing) and connector.

Is there no slackened refrigerant?

YES

NO

Does electron expansion valve normally operate?

YES

NO

Compressor lock Replace

Check TE and TS sensors. Replace

Check electron expansion valve. Replace

Check IPDU and CDB.

Defect Replace


Defect Replace

[1E error]

Is protective control such as discharge temprelease control normal?

YES

NO


YES

NO

Correct the cabling and connection of connector.

Check parts. Defect Replace

Is charged refrigerant amount normal?

YES

NO

YES

Is not abnormal overload?

NO

NO


TD sensor resistance value normal?

YES


Check and correct the charged refrigerant amount.

Improve and delete the cause

Replace TD sensor.

Check CDB.

Defect Replace

[1F error]


YES

Is not abnormal overload?

NO

Is the circuit detected by current sensor normal?

YES


NO

YES

NO

Improve power line.

Improve and delete the cause.

Check and correct circuit cables.

Check IPDU.

Defect Replace


–

130



[21 error] [ ] LCD flash

Is high-voltage protective operation by

TE sensor normal?

YES

NO

Is connection of cabling connector normal?

YES

NO

Correct connection of cabling connector.

Check TE sensor.

Defect Replace

Does cooling outdoor fan normally operate?

YES

NO

Is connection of connector normal?

YES

NO


NO

Is fan motor normal?

YES

Replace fan motor.

NO

Check TE, TC, TS sensors.

Does electron control valve normally operate?

YES

Do not TD and TO sensors come off the detection part?

NO

YES

Replace electron expansion valve.

Correct coming-off.


TD, TO, TC sensor resistance values normal?

YES

NO

Replace TD, TO, and TC sensors.

* Refer to Characteristics-3 and 4.

Check charged refrigerant amount.

Check liquid/gas valves.

Check abnormal overload.

Check CDB.

Defect Replace


–

131



14-5. Simple Check Method for Main Parts

14-5-1. Indoor unit

No.

Part name Check procedure

1 Temperature sensor (Ta)

Heat exchanger sensor (Tc)

Heat exchanger sensor (Tcj)

Measure the resistance value with tester by removing the connector.

(Normal temperature)

Normal value

10 k

Ω

to 20 k

Ω

Refer to Characteristics table.

2 Louver motor

MP35EA12

Measure the resistance value of each winding coil with tester.

(Under normal temperature 25

°

C)

Brown

Red

Orange

Yellow

Pink

Blue

1

2

3

4

5

6

1

2

3

4

5

6

Position

Between 1 and 2

Between 1 and 3

Between 1 and 4

Between 1 and 5

Resistance value

130 ± 40

Ω

3 Indoor fan motor

(ICF-340-30-1) lMeasure the resistance value of each winding coil with tester.

lFor P.C. board side, proceed to [11 error] of

“

Troubleshooting procedure for each check code

”

.

Position

Between

(Black) and

(Red)

Between

(Black) and

(White)

Between

(Black) and

(Yellow)

Between

(Black) and

(Blue)

Resistance value

∞

(M

Ω

)

27 to 47 k

Ω

140 to 280 k

Ω

∞

(M

Ω

)

Red 1 1

Black 3

White

Yellow

4

5

Blue 6

3

4

5

6

1

3

4

5

6

1

2

3

4

5

6

–

132



Relational graph of temperature sensor resistance value and temperature

Resistance

(k )

10

20

0

10 20

40

TA sensor

Caracteristics-1

30

Resistance

(k )

20

30 40

Temperature [ C]

50

TC, TCJ sensor


10

0

–

10 0 10 20 30 40 50 60 70

Temperature [ C]

20

TE, TO, TS sensor

200


Resistance

(k )

(10 C or lower)

100

Resistance

(k )

(10 C or higher)

10

0

200

-10 0 10 20 30 40

Temperature [ C]

50 60 70

0

TD sensor


Resistance

(k )

(50 C or lower)

100

20

Resistance

(k )

(50 C or higher)

10

0 0

50

Temperature [ C]

100

–

133


100

50


Resistance

(K )

200

150


TH sensor

Resistance

(K )

(10 C or higher)

20

15

10

5

–

30

–

20

–

10 0 10 20 30 40

Temperature [

º

C]

50 60 70 80 90 100

–

134


TROUBLESHOOTING <WALL TYPE>. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E 181 Pages

TROUBLESHOOTING <WALL TYPE>. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E

14. TROUBLESHOOTING <WALL TYPE>

14-1. Summary of Troubleshooting

“

”

14-2. Troubleshooting with CHECK Display of Remote Controller

14-2-1. In case of main remote controller/sub-remote controller A

RBC-AM1E RBC-AS1E

LCD display “STANDBY” is present.

RESET switch

CHECK switch

<7 segment display>

<Display on CHECK monitor>

CHECK

UNIT

FILTER

<FILTER data>

<CHECK data>

14-2-2. Remote controller with timer

RBC-AM1E

LCD display STANDBY is present.

CHECK switch

RESET switch

<7 segment display>

<FILTER data>

<CHECK data>

14-2-3. Central remote controller

<7 segment display>

<Display on CHECK monitor>

<CHECK data>

14-3. Check Code Table

*

14-4. Troubleshooting for Each Check Code

CN301

CN300

14-5. Simple Check Method for Main Parts

14-5-1. Indoor unit

∞

∞

Key Features

Frequently Answers and Questions

What are the different types of indoor units available?

What is the standard capacity of the units?

What is the sound level of the outdoor unit?

Related manuals

Toshiba

MiNi SMMS

Toshiba

RAV-SM800 XT-E

Mitsubishi Heavy Industries

QA-S SRK25QA-S

Toshiba

RAV-SP 1100UT-E

Toshiba

RBC-AS21E

Toshiba

RAS

Toshiba

RAV-SM562MUT-E

Toshiba

RAV-SM1100AT-E

Toshiba

RAV-SM 802UT-E

Philips

Hue White and Color Ambiance Επιτραπέζιο φωτιστικό Gradient Signe

Toshiba

RAV-SM 561AT-E

Toshiba

RAV-360UH-P/360AH8-P

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