Инструкция на Настенные сплит-системы Toshiba серии RAS .... (сервис-мануалы) бренда Toshiba

SERVICE MANUAL

1. SAFETY PRECAUTIONS

The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. Be sure to read this installation manual carefully before installing. Recommend to the owner to perform maintenance periodically when using over long periods of time. Be sure to…

WARNING

• Installation work must be requested from the supplying retail dealership or professional vendors. Self-installation may cause water leakage, electrical shock, or fire as a result of improper installation. • Specified tools and pipe parts for model R410A are required, and installation work must be…

• Please read this installation manual carefbefore installing the unit. It contains further important instructions for proper installation. • Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet basement or expose to rain or water.…

2. SPECIFICATIONS

2-1. Specifications Unit model Cooling capacity Cooling capacity range Heating capacity Heating capacity range Power supply Electric Indoor characteristic Outdoor COP Sound Pressure level Sound power level Indoor unit RAS -18N3KVR -E RAS -22N3KVR -E RAS -18N3AV -E RAS -22N3AV -E 5.0 6.0 1.1 - 6.0…

2-2. Operation Characteristic Curve

<Cooling> <Heating> 10.00 10.00 9.00 9.00 8.00 8.00 RAS-22N3KVR-E 7.00 6.00 5.00 Current (A) Current (A) 7.00 RAS-18N3KVR-E 4.00 3.00 RAS-22N3KVR-E 6.00 5.00 RAS-18N3KVR-E 4.00 3.00 2.00 2.00 1.00 1.00 0.00 0.00 Compressor Speed (RPS) Compressor Speed (RPS) 2-3. Capacity Variation Ratio According to…

3. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC (R410A) which does not damage the ozone layer. The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful…

Table 3-2-1 Thicknesses of annealed copper pipes

Thickness (mm) Nominal diameter Outer diameter (mm) R410A R22 1/4 6.35 0.80 0.80 3/8 9.52 0.80 0.80 1/2 12.70 0.80 0.80 5/8 15.88 1.00 1.00 2. Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints Flare joints used to…

d) Flare Processing

Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conventional flare tool. Flare processing dimensions differ according to the type of flare tool. When using a conventional flare…

Table 3-2-6 Flare and flare nut dimensions for R22

Dimension (mm) Nominal Outer diameter Thickness diameter (mm) (mm) A B C D Flare nut width (mm) 1/4 6.35 0.8 9.0 9.2 6.5 13 17 3/8 9.52 0.8 13.0 13.5 9.7 20 22 1/2 12.70 0.8 16.0 16.2 12.9 20 24 5/8 15.88 1.0 19.0 19.7 16.0 23 27 3/4 19.05 1.0 23.3 24.0 19.2 34 36 45˚ 6˚ to 4 B A C 43˚ D to 4 5˚…

3-3. Tools

3-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12.7…

3-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. When the compound gauge’s pointer has indicated –0.1 Mpa (–76 cmHg), place the handle Low in the…

1. Be sure to make setting so that liquid can be charged

2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment…

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature. • Due to a wide effective temperature range, flux is hard to carbonize. • It is easy to remove slag after brazing. • The corrosive action to the treated metal and brazing filler is minimum. • It excels in coating performance and…

4. CONSTRUCTION VIEWS

4-1. Indoor Unit Heat exchanger Air Inlet Grille Inlet Air filter 243 1050 50 Air outlet Knock out system Knock out system 7 73.5 Wireless remote controller Hanger Hanger Connecting pipe (0.39m) (Flare Connecting pipe (0.49m) 12.70) (Flare 786 85 Hanger 235 215 6.35) For stud bold ( 6) For stud bold…

4-2. Outdoor Unit

A R15 36 Ø6 hole R5.5 Ø6 hole Ø11x14 hole 36 50 R15 A detail Drawing (Back leg) Ø 25 Drain outlet 2- Ø11 x 14 Hole (For Ø8 -Ø10 anchor bolt) B Detail Drawing (Front leg) FAN-GUARD Ø 436 COVER-PV 275 550 Z Liquid side (Flare Ø 6.35) Gas side (Flare ∅12.7) Z View Service port 2 - R5-5 x 17L Ushape…

5. WIRING DIAGRAM

5-1. Indoor Unit / Outdoor Unit P04 P05 P06 Q200 ~ 205 IGBT P25 YEL P24 P23 YEL P22 P21 BRW Q300 ~ 305 MOS-FET R221 R321 R220 R320 R219 R319 P35 L03 C13 3 3 CN603 P. C. Board MCC-5009 P34 P19 + + + P08 C12 Power Relay C14 L01 DB02 Varistor CT Relay Q404 P31 PUR CN701 P30 Surge Absorber P07 BLK PMV…

6. SPECIFICATIONS OF ELECTRICAL PARTS

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram RAS-18N3KVR-E / RAS-18N3AV-E INDOOR UNIT T1 Temp. measurement Cross flow fan P Pressure measurement Gauge attaching port Vacuum pump connecting port Allowable height difference: 10m TC TA Deoxidized copper pipe Outer dia. : 6.35mm Thickness : 0.8mm Sectional shape of…

INDOOR UNIT T1 Temp. measurement TA Cross flow fan P Pressure measurement Gauge attaching port Vacuum pump connecting port Allowable height difference: 10m TC Deoxidized copper pipe Outer dia. : 6.35mm Thickness : 0.8mm Sectional shape of heat insulator Deoxidized copper pipe Outer dia. : 12.7mm…

7-2. Operation Data

<Cooling> Tempeature condition(°C) Indoor Outdoor 27/19 35/24 Model name RAS18N3KVR-E Standard Heat exchanger Indoor Outdoor Compressor pressure pipe temp. fan mode fan mode revolution P (MPa) T1 (°C) T2 (°C) 0.9 to 1.1 11 to 13 40 to 42 (rps) 67 High 22N3KVR-E 0.9 to 1.1 11 to 13 High 41 to 43 77…

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit Indoor Unit Control Unit M.C.U. Heat Exchanger Sensor (Tc) Room Temperature Sensor (Ta) Infrared Rays Signal Receiver and Indication Initializing Circuit Louver Motor Drive Control Functions Louver Motor • Cold draft preventing Function • 3-minute Delay at Restart for Compressor…

Heat exchanger

temp.sensor Suction temp. sensor Outdoor air temp. sensor Discharge temp. sensor Noise Filter Indoor unit send/receive circuit 220-240V~, 50Hz 220-230V~, 60Hz For INDOOR UNIT − 23 − Relay circuit 4-way valve PMV Converter (AC → DC) Input current sensor Driver circuit of PMV Clock frequency 4MHz High…

9. OPERATION DESCRIPTION

• Detection of inverter input current and current release operation • Over-current detection and prevention operation to IGBT module (Compressor stop function) • Compressor and outdoor fan stop function when serial signal is off (when the serial signal does not reach the board assembly of outdoor…

Description

Operation flow and applicable data, etc. Item 1. Basic operation 1. Operation control Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are controlled. 1) The operation conditions are selected by the remote controller as shown in the below. 2) A signal is…

1. Basic

operation Operation flow and applicable data, etc. Description 2. Cooling/Heating operation The operations are performed in the following parts by controls according to cooling/heating conditions. 1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal…

2. Indoor fan

motor control <In cooling operation> (This operation controls the fan speed at indoor unit side.) The indoor fan (cross flow fan) is operated by the phasecontrol induction motor. The fan rotates in 5 stages in MANUAL mode, and in 5 stages in AUTO mode, respectively. (Table 1) Description ∗ Symbols…

2. Indoor fan

motor control Description <In heating operation> 1) When setting the fan speed to L, L+, M, M+ or H on the remote controller, the operation is performed with the constant speed shown in Fig. 3 and Table 1. 2) When setting the fan speed to AUTO on the remote controller, revolution of the fan motor is…

Description

The cooling or heating capacity depending on the load is adjusted. According to difference between the setup value of temperature and the room temperature, the capacity is adjusted by the compressor revolution. 1) The difference between set temperature on remote controller (Ts) and room temperature…

Description

6. Release protective control by temperature of indoor heat exchanger <In cooling/dry operation> (Prevent-freezing control for indoor heat exchanger) In cooling/dry operation, the sensor of indoor heat exchanger detects evaporation temperature and controls the compressor speed so that temperature of…

Description

7. Defrost control (Only in heating operation) (This function removes frost adhered to the outdoor heat exchanger.) The temperature sensor of the outdoor heat exchanger (Te sensor) judges the frosting status of the outdoor heat exchanger and the defrost operation is performed with 4-way valve…

8. Louver control

1) Louver position Description This function controls the air direction of the indoor unit. • The position is automatically controlled according to the operation mode (COOL/HEAT). • The set louver position is stored in memory by the microcomputer, and the louver returns to the stored position when…

9. ECO operation

Description Operation flow and applicable data, etc. Item When pushing [ECO] button on the remote controller, a Economic operation is performed. <Cooling operation> This function operates the air conditioner with the difference between the set and the room temperature as shown in the following…

Description

10. Temporary operation Pushing [RESET] button starts the temporary operation of [AUTO] operation. When keeping [RESET] button pushed for 10 seconds or more, the temporary [COOL] operation is performed. 1) When pushing [RESET] button, the temporary [AUTO] operation starts. 2) When keeping [RESET]…

Description

12. Pulse motor valve (PMV) control This function controls throttle amount of the refrigerant in the refrigerating cycle. According to operating status of the air conditioner, this function also controls the open degree of valve with an expansion valve with pulse motor. 1) When starting the…

Description

Operation flow and applicable data, etc. Item 13. Self-Cleaning function Unit now performing cooling or dry operation Push “STOP” button Only timer indicator lights, and Self-Cleaning operation starts Time set now elapses Operation stops • During Self-Cleaning operations: The louver opens slightly.…

13. Self-Cleaning

function Operation flow and applicable data, etc. Description • Self-Cleaning diagram Operation display ON OFF OFF FCU fan ON rpm is depend on presetting. ON (500RPM) OFF FCU louver OPEN OPEN (12.7°) CLOSE Timer display ON or OFF depend on presetting of timer function. ON ON or OFF depend on…

Description

15. QUIET mode When the [QUIET] button is pushed, the fan of the indoor unit will be restricted the revolving speed at speed L - until the [QUIET] button is pushed once again (cancel Quiet mode). Quiet mode is the system which, control the revolving speed of indoor fan to work constantly at lower…

18. One Touch

Comfort Operation flow and applicable data, etc. Description One touch comfort is the fully automated operation that is set according to the preferable condition in a region. Operation condition for model to Europe market When an indoor unit receives “One Touch Comfort Signal” from the remote…

9-3. Auto Restart Function

This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with the set operating conditions in the event of a power supply being accidentally shut down. The operation will resume without warning three minutes after power is restored. This function…

9-3-2. How to Cancel the Auto Restart Function

To cancel auto restart function, proceed as follows : Repeat the setting procedure : the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote controller after the main power supply is turned off. • When the system is on stand-by (not operating)…

9-4. Remote control

9-4-1. Remote Controller and Its Functions 1 1 Infrared signal emitter 2 Start/Stop button 3 Mode select button (MODE) 4 Temperature button (TEMP) 5 Fan speed button (FAN) 6 Swing louver button (SWING) 7 Set louver button (FIX) 8 On timer button (ON) 9 Off timer button (OFF) 10 Setup button (SET) 11…

4. DRY OPERATION (COOLING ONLY)

For dehumidification, a moderate cooling performance is controlled automatically. 1. Press MODE : Select Dry 2. Press . : Set the desired temperature. 5. AIR PURIFYING OPERATION During air conditioner operation. Press PURE : Start and stop the Plasma air purifier and air ionizer operation. The…

10. PRESET OPERATION

Set your preferred operation for future use. The setting will be memorized by the unit for future operation (except air flow direction). 1. Select your preferred operation. 2. Press and hold for 3 seconds to memorize the setting. The P mark displays. 3. Press : Operate the preset operation. 11. AUTO…

9-4-3. Names and Functions of Indications on Remote Controller

[Display] All indications, except for the clock time indicator, are displayed by pushing the 1 Transmission mark 8 This transmission mark indicates when the remote controller transmits signals to the indoor unit. 9 ECO indicator 3 Temperature indicator Indicates when the ECO is in activated. Push…

10. INSTALLATION PROCEDURE

170 mm or m 50 mm or more 10-1. Installation Diagram of Indoor and Outdoor Units ore For the rear left and left piping Hook 1 Installation plate Hoo k 17 0 mm o Wall rm or e Do not allow the drain hose to get slack. Air fi lter 8 Insert the cushion between the indoor unit and wall, and tilt the…

10-2. Optional Parts, Accessories and Tools

10-2-1. Optional installation parts Part Code Parts name Q'ty A Refrigerant piping Liquid side : ∅6.35 mm Gas side : ∅12.70 mm One each B Pipe insulating material (polyethylene foam, 8 mm thick) C Putty, PVC tapes 1 One each <Fixing bolt arrangement of outdoor unit> 108 mm 125 mm Air inlet 25 m m 28…

10-2-2. Accessory and installation parts

Part No. Part name (Q’ty) 1 Part No. Part name (Q’ty) Battery-cover x 1 Filter x Pure Air Purifier x 1 Battery x 2 Others Flat head wood screw ∅3.1 x 25 s x 1 Remote control holder x 1 Wireless remote control x 1 Part name (Q’ty) 9 4 Installation plate x 1 Part No. Screw ∅4 x 10 s x 2 Name Owner’s…

10-2-3. Installation/Servicing Tools

Changes in the product and components In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch) • In order to…

10-3-2. Cutting a Hole and Mounting

Installation Plate 10-3. Indoor Unit 10-3-1. Installation Place • A place which provides the spaces around the indoor unit as shown in the diagram. • A place where there are no obstacle near the air inlet and outlet. • A place which allows easy installation of the piping to the outdoor unit. • A…

<When the installation plate is directly

mounted on the wall> 10-3-3. Wiring Connection 1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook up the indoor unit. 2. To mount the installation plate on a concrete wall with anchor bolts, use the aanchor bolt holes as illustrated in the below…

70 mm

10-3-4. How to Connect Remote Controller for Wire Operation 4 2 * Wire size 28-22 AWG (0.08~0.32 mm ) Outer diameter not over 4.7 mm, control wire length 30 m. or less. 5 mm 5 Indoor unit Control wire out position 6 Control wire Control wire Remote controller Tighten fi rmly Terminal but not over…

Die-cutting

front panel slit Bottom left Remote controller Left Wall Bottom right Remote controller Right Screw (∅3.1 x 25L) for fi x battery cover " 1. Die-cutting front panel slit Cut out the slit on the left or right side of the front panal for the left or right connection and the slit on th bonttom left or…

<How to attach the drain cap>

<In case of bottom right or bottom left piping> 1. Insert hexagon wrench (4 mm) in a center head. • After scribing slits of the front panel with a knife or a making-off pin, cut them with a pair of nippers or an equivalent tool. Slit Fig. 10-3-18 4 mm Fig. 10-3-15 <Left-hand connection with piping>…

Information

• Bind the auxiliary pipes (two) and connecting cable with facing tape tightly. In case of leftward piping and rear-leftward piping, bind the auxiliary pipes (two) only with facing tape. The lower part of indoor unit may float, due to the condition of piping and you cannot fix it to the installation…

Arrange the drain pipe for proper drainage from

the unit. Improper drainage can result in dew-dropping. This air conditioner has the structure designed to drain water collected from dew, which forms on the back of the indoor unit, to the drain pan. Therefore, do not store the power cord and other parts at a height above the drain guide. Wall…

10-4. Outdoor Unit

CAUTION 10-4-1. Installation place • A place which provides the spaces around the outdoor unit as shown in the left diagram. • A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration. • A place where the operation noise and discharged air do…

10-4-4. Evacuating

Imperial (wing nut type) Outer dia. of copper pipe R410A ∅ 6.35 1.5 to 2.0 ∅ 12.70 2.0 to 2.5 CAUTION After the piping has been connected to the indoor unit, you can perform the air purge together at once. <Tightening connection> Align the centers of the connecting pipes and tighten the flare nut as…

10-4-5. Wiring connection

CAUTION • KEEP IMPORTANT 5 POINTS FOR PIPING WORK (1) Take away dust and moisture (Inside of the connecting pipes.) (2) Tight the connection (between pipes and unit) (3) Evacuate the air in the connecting pipes using a VACUUM PUMP. (4) Check gas leak (connected points) (5) Be sure to fully open the…

18 Class

Model 22 Class 10-5-2. Remote Control A-B Selection 220 - 240V Single phase, 50Hz 220 - 230V Single phase, 60Hz Power source Maximum running current 10.0A 13.5A Plug socket & fuse rating 16A 16A Power cord H07RN-F or 60245 IEC66 (1.5 mm2) Connecting cable H07RN-F or 60245 IEC66 (1.0 mm2) CAUTION •…

10-5-3. Test operation

10-5-4. Auto restart setting To switch the TEST RUN (COOL) mode, press [RESET] button for 10 sec. (The beeper will make a short beep.) This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure. Information The product…

11. HOW TO DIAGNOSE THE TROUBLE

The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.) Table 11-1 No.…

A high voltage (equivalent to the supply voltage) is also energized to ground through the

sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered with insulated tubes for protection. Nevertheless, care must be taken to ensure that these wires are not pinched. Take sufficient care to avoid directly touching any of the circuit parts without first turning…

11-1. First Confirmation

11-1-1. Confirmation of Power Supply Confirm that the power breaker operates (ON) normally. 11-1-2. Confirmation of Power Voltage Confirm that power voltage is AC 220–230–240 ± 10%. If power voltage is not in this range, the unit may not operate normally. 11-1-3. Operation Which is not a Trouble…

11-2. Primary Judgment

To diagnose the troubles, use the following methods. 1) Judgment by flashing LED of indoor unit 2) Self-diagnosis by service check remote controller 3) Judgment of trouble by every symptom Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.…

11-4. Self-Diagnosis by Remote Controller (Check Code)

1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller. 2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condition and indicates the information of the self-diagnosis on the display of…

11-4-2 Caution at Servicing

1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function. 2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air conditioner to normal operation. However, the…

Block distinction

Check code Operation of diagnosis function Check code Block Air conditioner status Cause of operation Action and Judgment Display flashing error Serial signal 1) Defective wiring of the Indoor unit Flashes when and connecting connecting cable or operates error is detected. operate. cable.…

Operation of diagnosis function

Block distinction Check code Block Outdoor P.C. board Check code Cause of operation Air conditioner status Judgment and action Remarks Inverter over-current protective circuit operates. (Short time) All off Displayed when error is detected. Even if trying operation again, all operations stop…

11-5. Judgement of Trouble by Every Symptom

11-5-1. Indoor unit (Including remote controller) (1) Indoor unit is not operated. Operation Check Item Considerable principle cause Turn off power supply once, and 5 second later, turn it on again. Measures NO Item by symptoms Is OPERATION indicator flashing? YES Is it possible to turn on A/C by…

(3) Only the indoor motor fan does not operate

<Primary check> 1. Is it possible to detect the power supply voltage (AC220–240V) between 1 and 2 on the terminal block? 2. Does the indoor fan motor operate in cooling operation? (In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned on, to…

A

Is it possible to change airflow level to “HIGH”? NO Does check display on remote show high? NO Replace remote YES YES Change the new PC board. Does fan speed change? NO Replace motor YES B Fan motor operates normally. Is it possible to rotate cross-flow fan by hand properly? NO Does check…

(4) Indoor fan motor automatically starts to rotate by turning on power supply

<Cause> The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor. If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning on power supply. <Inspection procedure> 1. Turn on breaker. 2. After…

(5) Troubleshooting for remote controller

<Primary check> Check that A or B selected on the main unit is matched with A or B selected on the remote controller. Push the [ The unit does not beep at all. Operation lamp on indoor unit is not indicated. ] button. NO Is transmission mark indicated? YES Is receiver on indoor unit exposed to…

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

(1) Outdoor unit does not operate 1) Is the voltage between 2 and 3 of the indoor terminal block varied? Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the following diagram. NOTE: • Measurement should be performed 2 minutes and 30 seconds after starting…

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

<Check procedure> 1C 1E Gas leakage, disconnection of TS/TC sensors (Check code 02, 1C) Discharge temp. error, gas leakage (Check code 03, 1E) Valve drive check NO Is coil of the pulse motor valve (P.M.V.) correctly set? Set it correctly. YES NO Is connecter of coil connected to inverter? Set it…

11-7. Troubleshooting

11-7-1. How to Check Whether the Air Purifier is Good or Not Turn off the power breaker once, and turn on again after 10 seconds. Does the OPERATION indicator flash? NO To item “Power supply is not turned on” Primary check YES Turn off the power breaker and remove CN41 (Micro switch connector).…

11-7-2. How to Check Whether the Minus Ion Generator is Good or Not

Turn off the power breaker once, and turn on again after 10 seconds. Does the OPERATION indicator flash? NO To item “Power supply is not turned on” Primary check YES Turn off the power breaker and remove CN41 (Micro switch connector). Short-circuit between 1 and 2 pin of CN41 at PC side, and turn on…

11-8. How to Diagnose Trouble in Outdoor Unit

Check Power Supply (Voltage Rate ±10%) YES Turn OFF power supply. Remove connector of compressor. Check 25A fuse (F01) failure? NO YES NO Check component parts of control board assembly by visual. (damage, burn,.. Etc.) YES Replace control board. Replace fuse. Turn ON power Supply. Check terminal…

A

Does outdoor fan operate normally? NO YES YES Turn OFF power supply. Does compresser operate normally? NO NO Compressor is normal YES Turn OFF power supply. Replace outdoor fan motor. Check compressor winding resistance correct? YES NO Replace compressor. Turn ON power supply. Check voltage of the…

11-9. How to Check Simply the Main Parts

(2) Inspection procedures 1) When a P.C. board is judged to be defective, 11-9-1. How to check the P.C. board (Indoor unit) check for disconnection, burning, or discoloration of the copper foil pattern or this P.C. board. (1) Operating precautions 2) The P.C. board consists of the following 2 parts…

GND +12V +5V [1] Sensor characteristic table 100 Resistance value (kΩ) 90 80 TD TA, TC, TCJ, TO, TE, TS Temperature ( C) – 84 – TD : Discharge temp. sensor TA : Room temp. sensor TC, TCJ : Heat exchanger temp. sensor TO : Outdoor temp. sensor TE : Outdoor heat exchanger temp. sensor TS : Suction…

11-9-3. Indoor Unit (Other Parts)

No. Part name 1 Room temp. (TA) sensor Heat exchanger (TC) sensor Checking procedure Disconnect the connector and measure the resistance value with tester. (Normal temp.) Temperature Sensor TA, TC (kΩ) 10°C 20°C 25°C 30°C 40°C 20.7 12.6 10.0 7.9 4.5 2 Remote controller Refer to 11-5-1. (5). 3 Louver…

11-9-5. Checking Method for Each Part

Part name Checking procedure 1 Electrolytic capacitor (For boost, smoothing) 1. Turn OFF the power supply breaker. 2. Discharge all three capacitors completely. 3. Check that safety valve at the bottom of capacitor is not broken. 4. Check that vessel is not swollen or exploded. 5. Check that…

11-10. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

1. Symptom • Outdoor fan motor does not rotate. • Outdoor fan motor stops within several 10 seconds though it started rotating. • Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc. Remote controller check code “02 : Outdoor block, 1A : Outdoor fan…

12. HOW TO REPLACE THE MAIN PARTS

WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. • After the repairs have been completed (after the front panel and cabinet have been installed)…

Part name

Procedures Electric parts box assembly 1) Follow the procedure up to 6) in above. 2) Remove screw of earth lead attached to the end plate of the evaporator. 3) Remove the lead wire cover, and remove connector for the fan motor and connector for the louver motor from the electric parts box…

Part name

Procedures Remarks Horizontal louver 1) Remove shaft of the horizontal louver from the back body. (First remove the left shaft, and then remove other shafts while sliding the horizontal louver leftward.) Evaporator (Heat exchanger) 1) Follow to the procedure in the item . 2) Remove the pipe…

Part name

Bearing Procedures Remarks 1) Follow to the procedure in the item . 2) Remove the two screws used to secure the bearing base. Two screws Two screws 3) Remove the bearing base. <Caution at assembling> • If the bearing is out from the housing, push it into the specified position and then incorporate…

Part name Fan motor Procedures Remarks 1) Follow to the procedure till item . 2) Loosen the set screw of the cross flow fan. 3) Remove two fixing screws of the motor cover and them remove the motor cover. 4) Remove two more fixing screws of the motor band and remove the motor band. Set screw Two…

Part name

Procedures Cross flow fan <Caution at reassembling> 1) To incorporate the fan motor, remove the fan motor rubber (at shaft core side), incorporate the motor into the position in the following figure, and then install the fan motor. • Install the cross flow fan so that the right end of the 1st…

Part name

Procedures Front panel 4) Press "PUSH" part under the front panel and remove hooks of the front panel from the installation plate. Remarks Installation plate Front panel Press 5) Remove the front panel fixing screws. (4 pcs.) 6) Take off four hooks of panel from rear side. 4 Screw 2 Screws Three…

12-3. Outdoor Unit

No. Part name Common procedure Procedure Remarks NOTE Upper cabinet 1. Detachment Wear gloves for this job. Otherwise, you may injure your hands on the parts, etc. Waterproof cover 1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner. 2) Remove…

Part name

Procedure Front cabinet 1. Detachment 1) Perform step 1 in . 2) Remove the fixing screws (ST1TØ4 × 10L 2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST1TØ4 × 10L 4 pcs.) used to secure the front cabinet at the bottom, and the fixing screws (ST1TØ4 × 10L 2 pcs.) used to…

Part name

Inverter assembly Procedure 1) Perform work of item 1 in . 2) Remove screw (ST1TØ4 × 10L 2 pcs.) of the upper part of the front cabinet. • If removing the inverter cover in this condition, P.C. board can be checked. • If there is no space above the unit, perform work of 1 in . Remarks Inverter…

Part name

Procedure Control board assembly 1. Disconnect the leads and connectors connected to the other parts from the control board assembly. 1) Leads • 3 leads (black, white, orange) connected to terminal block. • Lead connected to compressor : Disconnect the connector (3P). • Lead connected to reactor…

Part name

Procedure Side cabinet 1. Side cabinet (right) 1) Perform step 1 in and all the steps in . 2) Remove the fixing screw (ST1TØ4 × 10L 4 pcs.) used for securing the side cabinet to the bottom plate and valve fixing panel. Remarks 2. Side cabinet (left) 1) Perform step 1 in . 2) Remove the fixing…

Part name

Procedure Compressor 1) Perform work of item 1 of and , , , . 2) Extract refrigerant gas. 3) Remove the partition board. (ST1TØ4 × 10L 3 pcs.) 4) Remove the sound-insulation material. 5) Remove terminal cover of the compressor, and disconnect lead wire of the compressor from the terminal. 6)…

Part name

Electronic expansion valve coil Procedure 1. Detachment 1) Perform step 1 in , all the steps in and 1 in . 2) Remove the coil by rotating it at 90° toward either direction. Remarks Lead connecting part 2. Attachment 1) Insert a valve coil in a volve body to the bottom, and fix it by rotating at…

Procedure Part name Remarks TE sensor (Outdoor heat exchanging temperature sensor) • Attachment With the leads pointing downward and the sensor leads pointing in the direction shown in the figure, install the sensor onto the straight pipe part of the condenser output pipe. Detail C 12 TS sensor…

Part name

Procedure 14 Replacement of temperature sensor for servicing only 1) Cut the sensor 100 mm longer than old one. 2) Cut the protective tube after pulling out it (200 mm). 3) Move the protective tube toward the thermal sensor side and tear the tip of lead wire in two then strip the covering part. 4)…

13. EXPLODED VIEWS AND PARTS LIST

13-1. Indoor Unit (Part-E) Location No. Part No. Location No. Part No. Description 401 43T50308 SENSOR HEAT EXCHANGER 407 43T69723 PC BOARD ASSY (RAS-18N3KVR-E) 402 43T60331 TERMINAL; 3P 407 43T69724 PC BOARD ASSY (RAS-22N3KVR-E) 403 43T69320 TEMPERATURE SENSOR 411 43T51308 SWITCH ASSY,MICRO 404…

13-2. Indoor Unit

Location No. Part No. Location No. Part No. 201 43T21428 FAN-MOTOR 224 43T39022 BAND, MOTOR, RIGHT UP 202 43T22312 BEARING ASSY, MOLD 225 43T09040 LOUVER, HORIZONTAL 203 43T70313 HOSE, DRAIN 226 43T03015 BODY ASSY, BACK 204 43T20016 FAN, ASSY, CROSS FLOW 227 43T44030 EVAPORATOR ASSY 205 43T49010…

13-3. Outdoor Unit

13-4. P.C. Board Layout (Outdoor)

13-5. P.C. Board Layout (Outdoor)

TOSHIBA CARRIER (THAILAND) CO.,LTD.

Инструкция на Настенные сплит-системы Toshiba серии RAS .... (сервис-мануалы)

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