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

FILE NO. A07-008

SERVICE MANUAL SPLIT TYPE Indoor Unit <High Wall, Heat Pump Type> RAS-18SKV-E RAS-22SKV-E RAS-18SKVR-E RAS-22SKVR-E Outdoor Unit <Heat Pump Type> RAS-18SAV-E RAS-22SAV-E R410A Printed in Japan, Feb., 2008

1. SAFETY PRECAUTIONS

For general public use Power supply cord of outdoor unit shall be more than 1.5 mm2 (H07RN-F or 60245IEC66) polychloroprene sheathed flexible cord. • Read this “SAFETY PRECAUTIONS” carefully before servicing. • The precautions described below include the important items regarding safety. Observe…

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE

TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION. • TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTORS, FURNACE, STOVES, ETC. • WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION…

2. SPECIFICATIONS

2-1. Specifications Unit model Indoor Outdoor Cooling capacity Cooling capacity range Heating capacity Heating capacity range Power supply Electric Indoor characteristic Outdoor COP Sound Pressure Indoor level Outdoor Sound power Indoor level Outdoor Unit model Indoor unit Dimension (kW) (kW) (kW)…

Unit model

Indoor Outdoor Cooling capacity Cooling capacity range Heating capacity Heating capacity range Power supply Electric Indoor characteristic Outdoor COP Sound Pressure Indoor level Outdoor Sound power Indoor level Outdoor Indoor unit Unit model Dimension (kW) (kW) (kW) (kW) Operation mode Running…

2-2. Operation Characteristic Curve

<Heating> <Cooling> 10.00 10.00 9.00 9.00 RAS-22SKV-E RAS-22SKVR-E 8.00 7.00 7.00 RAS-18SKV-E RAS-18SKVR-E 6.00 Current (A) Current (A) RAS-22SKV-E RAS-22SKVR-E 8.00 5.00 4.00 3.00 6.00 RAS-18SKV-E RAS-18SKVR-E 5.00 4.00 3.00 2.00 2.00 1.00 1.00 0.00 0.00 Compressor Speed (RPS) Compressor Speed…

3. REFRIGERANT R410A

6. When an air conditioning system charged with a large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, even when refrigerant leaks, its concentration does not exceed the marginal level. If the refrigerant gas leakage occurs and its concentration exceeds…

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 diameter Outer diameter (mm) Thickness (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 to 4 B A C 43 D to 4 5 Fig. 3-2-2…

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 RAS-18SKVR-E RAS-22SKVR-E 215.5 262.5 262.5 – 15 – 153.5 109

4-2. Indoor Unit

RAS -18SKV-E RAS -22SKV-E 215.5 262.5 262.5 – 16 – 153.5 109

4-3. Outdoor Unit

600 A leg part 90 dia.11-14U-shape hole 290 306 dia.7 hole pitch 8-dia.7 hole (for fixing outdoor unit) CL 257 145 Packed valve cover 108 dia.436 B leg part 483 Connecting pipe port (Pipe dia.6.35) 449 550 Fan guard Z di a 143 342 4-dia.4.5 embossment Connecting pipe port (Pipe dia.12.7) 600 .25…

5. WIRING DIAGRAM

6. SPECIFICATIONS OF ELECTRICAL PARTS

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram RAS-18SKV-E / RAS-18SAV-E RAS-18SKVR-E / RAS-18SAV-E T1 INDOOR UNIT Temp. measurement Indoor heat exchanger Cross flow fan Allowable height difference : 10m P Pressure measurement Gauge attaching port Vacuum pump connecting port TA Deoxidized copper pipe Outer dia.…

RAS-22SKV-E / RAS-22SAV-E

RAS-22SKVR-E / RAS-22SAV-E T1 INDOOR UNIT Temp. measurement Indoor heat exchanger Cross flow fan Allowable height difference : 10m P Pressure measurement Gauge attaching port Vacuum pump connecting port TA Deoxidized copper pipe Outer dia. : 6.35mm Thickness : 0.8mm Sectional shape of heat insulator…

7-2. Operation Data

<Cooling> Tempeature Model name Standard condition(°C) RAS- pressure Indoor Outdoor 27/19 35/- Heat exchanger Indoor Outdoor Compressor pipe temp. fan mode fan mode revolution P (MPa) T1 (°C) T2 (°C) (rps) 18SKV-E 0.9 to 1.1 11 to 13 40 to 42 High High 67 18SKVR-E 0.9 to 1.1 11 to 13 40 to 42 High…

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit RAS-18SKV-E, RAS-22SKV-E Indoor Unit Control Unit M.C.U. Heat Exchanger Sensor (Tc) Room Temperature Sensor (Ta) Louver Motor Functions • Cold draft preventing Function • 3-minute Delay at Restart for Compressor Infrared Rays Signal Receiver and Indication • Fan Motor Starting…

RAS-18SKVR-E, RAS-22SKVR-E

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

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

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…

1. Basic

operation Description 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 sent by ON button of the remote…

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 UH H M+ M…

2. Indoor fan

motor control Description 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 controlled to the fan…

Description

4. Capacity

control Operation flow and applicable data, etc. 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…

Indoor heat exchanger temperature

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

7. Defrost control (This function removes frost adhered to the outdoor

(Only in heating heat exchanger.) operation) 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 reverse defrost system. Outdoor heat exchanger temperature Start of heating…

Description

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

9. ECO

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

Description

10. Temporary Pressing [RESET] button starts the temporary operaoperation tion of [AUTO] operation. When keeping [RESET] button pressed for 10 seconds or more, the temporary [COOL] operation is performed. YES Filter lamp ON Press RESET button. NO NO Did you press [RESET] button for 3 seconds or…

1. Purpose

The air purifying control function is to alert the user to trouble in the ionizing or air purifying operation. 11. Air purifying control [Detection of abnormality] Air purifying operation 2. Description Trouble is determined to have occurred (indicated by the FILTER indicator) in the following four…

Description

12. Pulse Modulating valve (P.M.V.) 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 Modulation. 1) When starting…

Description

Operation flow and applicable data, etc. 13. Self-Cleaning function Unit now performing cooling or dry operation Press “STOP” button Only timer indicator lights, and Self Cleaning operation starts 1. Purpose The Self-Cleaning operation is to minimize the growth of mold, bacteria etc. by running the…

Description

• Self-Cleaning diagram 13. Self-Cleaning function Operation display ON OFF OFF FCU fan ON rpm is depend on presetting. ON (450RPM) OFF FCU louver OPEN OPEN (12.7º) CLOSE Timer display ON or OFF depend on presetting of timer function. ON ON or OFF depend on presetting of timer function. Compressor…

15. QUIET mode

Description Operation flow and applicable data, etc. When the [QUIET] button is pressed, the fan of the indoor unit will be restricted the revolving speed at speed L − until the [QUIET] button is pressed once again (cancel Quiet mode). Quiet mode is the system which, control the revolving speed of…

18. One-Touch

Comfort Operation flow and applicable data, etc. One touch comfort is the fully automated operation that is set according to the preferable condition in a region. 0 * AUTO/L 12 L 25 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 control and its functions Infrared signal emitter Start/Stop button Mode select button (MODE) Temperature button (TEMP) Fan speed button (FAN Swing louver button (SWING) Set louver button (FIX) On timer button (ON) Off timer button (OFF) Sleep timer button (SLEEP) Setup button (SET)…

4. DRY OPERATION (COOLING ONLY)

For dehumidification, a moderate cooling performance is controlled automatically. 1. Press MODE : Select Dry . 2. Press MODE : Set the desired temperature. 5. AIR PURIFYING OPERATION (RAS-18,22SKVR-E Only) During air conditioner operation Press PURE to start and air ionizer operation. The plasma air…

Note

· Keep the remote control in accessible transmission to the indoor unit; otherwise, the time lag of up to 15 minutes will occur. · The setting will be saved for the next same operation. 10. PRESET OPERATION Set your preferred operation for future use. The setting will be memorized by the unit for…

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

[Display] All indications, except for the clock time indicator, are displayed by pressing the 1 Transmission mark button. 6 TIMER and clock time indicator This transmission mark indicates when the remote controller transmits signals to the indoor unit. The time setting for timer operation or the…

10. INSTALLATION PROCEDURE

50 mm or more 10-1. Installation Diagram of Indoor and Outdoor Units Pure Air Purifier SKVR only 17 0 mm o rm ore plate Hoo Air f For the rear left and left piping 1 Installation Hook 17 0 k mm o Wall rm ore Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better…

10-2. Optional Parts, Accessories and Tools

10-2-1. Optional Installation Parts Part Code Parts name Q’ty Refrigerant piping Indoor unit name Y Liquid side (Outer diameter) Gas side (Outer diameter) 6.35 mm 12.7 mm RAS-18SKVR-E, 18SKV-E RAS-22SKVR-E, 22SKV-E 1 ea. Shield pipe (for extension drain hose) (polyethylene foam, 6 mm thick) 108 mm 1…

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. Drilling a Hole and Mounting Installation Plate

10-3. Indoor Unit 10-3-1. Installation Place Drilling a hole When install the refrigerant pipes from the rear. m from the right side edge is e center of pipe hole • A place which provides enough spaces around the indoor unit as shown in the diagram. • A place where there are no obstacle near the air…

When the installation plate is directly

mounted on the wall 1. Securely fit the installation plate onto the wall by screws with the upper and lower catches, that hold the indoor unit, facing out. 2. To mount the installation plate on a concrete wall use anchor bolts. Drill the anchor bolt holes as illustrated in the above figure. 3.…

10-3-5. Piping and Drain Hose Installation

CAUTION • Be sure to refer to the wiring system diagram labeled inside the front panel. • Check local electrical regulations for any specific wiring instructions or limitations. Piping and drain hose forming • Since condensation results in machine trouble, make sure to insulate both the connecting…

How to attach the drain cap

In case of bottom right or bottom left piping 1. Insert hexagonal wrench (4 mm). • After making slits on the front panel with a knife or similar tool, cut them out with a pair of nippers or an equivalent tool. Slit Fig. 10-3-14 4 mm Fig. 10-3-11 Left-hand connection with piping 2. Firmly insert…

10-3-7. Drainage

CAUTION 1. Run the drain hose at a downward sloped angle. • 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. NOTE : • Hole should be made at a slight downward slant…

10-4. Outdoor Unit

Precautions for adding refrigerant 10-4-1. Installation Place • Use a scale having a precision with at least 10 g per index line when adding the refrigerant. Do not use a bathroom scale or similar instrument. • Use liquid refrigerant when refilling the refrigerant. Since the refrigerant is in liquid…

10-4-2. Draining the Water

10-4-3. Refrigerant Piping Connection • Holes are provided on the base plate of the outdoor unit to ensure that the defrost water produced during heating operations is drained off efficiently. If a centralized drain is required when installing the unit on a balcony or wall, follow the steps below to…

Revised-2

Tightening Connection Use a vacuum pump Align the centers of the connecting pipes and tighten the flare nut as much as possible with your fingers. Then tighten the nut with a wrench and torque wrench as shown in the figure. Be sure to use a vacuum pump with counter-flow prevention function so that…

Revised

Packed Valve handling precautions • Open the valve stem all the way; but do not try to open it beyond the stopper. • Securely tighten the valve stem cap with torque in the following table: Gas side (Ø12.7 mm) 50 to 62 N•m (5.0 to 6.2 kgf•m) Liquid side (Ø6.35 mm) 14 to 18 N•m (1.4 to 1.8 kgf•m)…

Setting 10-5. Test Operation 10-5-1. Gas Leak Test When two indoor units are installed in the separated rooms, it is not necessary to change the selector switches. • Check the flare nut connections for gas leaks with a gas leak detector and/or soapy water. Remote control A or B Selection Check…

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 servicing, press 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…

Block distinction

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

11-5. Judgment of Trouble by Every Symptom

11-5-1. Indoor Unit (Including Remote Controller) (1) Power is not turned on (Does not operate entirely) <Primary check> 1. Is the supply voltage normal? 2. Is the normal voltage provided to the outdoor unit? 3. Is the crossover cable connected properly? 4. Is the fuse (F01) blown? Operation Check…

(3) Only the indoor motor fan does not operate

<Primary check> 1. Is it possible to detect the power supply voltage (AC220–240V) between Q and R 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…

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

(For DC fan motor in RAS-18,22SKV-E, RAS-18,22SKVR-E) <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.…

(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. The unit does not beep at all. Push the START/STOP button. Operation lamp on indoor unit is not indicated. NO Is transmission mark indicated? YES Is receiver on indoor unit exposed…

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

(1) Outdoor unit does not operate 1) Is the voltage between R and S 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 18 and 1E

<Check procedure> 18 1E Gas leakage, disconnection of TS/TE sensors (Check code 02, 1C) Discharge temp. error, gas leakage (Check code 03, 1E) Valve drive check Is coil of the pulse motor valve (P.M.V.) correctly set? NO Set it correctly. YES Is connecter of coil connected to inverter? NO Set it…

11-7. Troubleshooting

11-7-1. How to Check Whether the Air Purifier is Good or Not (18, 22SKVR-E only) 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…

11-7-2. How to Check Whether the Minus Ion Generator is Good or Not (18, 22SKVR-E only)

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” NO Replace the power P.C. board or the housing assembly. Primary check YES Turn off the power breaker and remove CN41 (Micro switch connector).…

11-8. How to Diagnose Trouble in Outdoor Unit

11-8-1. Summarized Inner Diagnosis of Inverter Assembly Table 11-8-1 Diagnosis/Process flowchart Item Contents Preparation Turn “OFF” the power supply breaker, and remove 3P connector which connects inverter and compressor. Check • Check whether 25A fuse on the control board assembly is blown or…

Diagnosis/Process flowchart

A Item Contents Check Check winding resistance between phases of compressor, and resistance between outdoor frames by using a tester. B Replace control board assembly. Check compressor winding resistance. • Is not grounded. → OK if 10MΩ or more • Is not short-circuited between windings.  → OK if…

(3) Check procedures

RAS-18, 22 Series Table 11-9-1 No. Procedure Check points 1 Turn off the power supply breaker and remove the P.C. board assembly from electronic parts base. Remove the connecting cables from the terminal block. Check whether or not the fuse (F01) is blown. Impulse voltage was applied or the indoor…

(RAS-18, 22 Series) GND +12V +5V [1] Sensor characteristic table 100 Resistance value (k ) 90 80 TD TA, TC, TO, TE, TS Temperature (˚C) – 82 – TD TA TC TO TE TS : Discharge temp. sensor : Room temp. sensor : Heat exchanger temp. sensor : Outdoor temp. sensor : Outdoor heat exchanger temp. sensor…

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 tens 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)…

Procedures

Remarks Front panel 4) Press "PUSH" part under the front panel and remove hooks of the front panel from the installation plate. 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 hooks Four…

Procedures

High voltage 1) Follow to the procedure in the item . generator 2) To remove the air ionizer from the back body, (only in model pull it toward you. RAS-18, 22 SKVR-E) Remarks 3) Disconnect the connectors of the high voltage generator. 2 Screws 4) Remove the fixing screws (2 pcs) and remove the…

Procedures

Electric parts box assembly 1) Follow the procedure up to 3) 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 assembly. 4) Pull…

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 holder from the…

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…

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…

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 joint from the…

12-2. Microcomputer

No. Part name Common procedure Procedure Remarks 1) Turn the power supply off to stop the operation of air-conditioner. 2) Remove the front panel. • Remove the 2 fixing screws. 3) Remove the electrical part base. Replace terminal block, microcomputer ass’y and the P.C. board ass’y. <P.C. board…

12-3. Outdoor Unit

No. Part name Common procedure Procedure Remarks 1. Detachment NOTE Wear gloves for this job. Otherwise, you may injure your hands on the parts, etc. 1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner. 2) Remove the valve cover. (ST1TØ4 × 8L 1…

Procedure

Front cabinet 1. Detachment 1) Perform step 1 in . 2) Remove the fixing screws (ST1TØ4 × 8L 2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST1TØ4 × 8L 3 pcs.) used to secure the front cabinet at the bottom, and the fixing screws (ST1TØ4 × 8L 2 pcs.) used to secure the…

Inverter assembly Procedure 1) Perform work of item 1 in . 2) Remove screw (ST1TØ4 × 8L 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…

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…

Side

cabinet Procedure Remarks 1. Side cabinet (right) 1) Perform step 1 in and all the steps in . 2) Remove the fixing screw (ST1TØ4 × 8L 5 pcs.) used for securing the side cabinet to the bottom plate and valve fixing panel. 2. Side cabinet (left) 1) Perform step 1 in . 2) Remove the fixing screw…

Procedure

Compressor 1) Perform work of item 1 of and , , , . 2) Extract refrigerant gas. 3) Remove the partition board. (ST1TØ4 × 8L 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) Remove pipe…

Electronic expansion valve coil Procedure Remarks 1. Detachment 1) Perform step 1 in , all the steps in and 1 in . 2) Remove the coil by pulling it up from the electronic control valve body. Coil anti-turn lock 2. Attachment 1) When assembling the coil into the valve body, ensure that the coil…

Part name Procedure 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 for RAS-18SAV-E…

13. EXPLODED VIEWS AND PARTS LIST

13-1. Indoor Unit ElectricPartsAssembly 206 231 Location Part No. No. Description 232 233 Location Part No. No. Description 201 43T21371 MOTOR, FAN 226 43T03014 BODY ASSY, BACK (18,22SKV-E) 202 43T22312 BEARING ASSY, MOLD 226 43T03015 BODY ASSY, BACK (18,22SKVR-E) 203 43T70313 HOSE, DRAIN 227…

Indoor Unit (Part-E)

Location

Part No. No. Description Location Part No. No. Description 001 43005657 CABI, FRONT 025 43046445 VALVE, 4WAY, STF-0213Z (22SAV-E) 002 43005642 CABINET, UPPER 026 43046444 VALVE, 4WAY, STF-0108Z (18SAV-E) 003 43005658 CABI, SIDE, REGHT 027 43146722 COIL, SOLENOID, STF-01A, J502E1 004 43005634…

13-3. P.C. Board Layout (Outdoor)

TOSHIBA CARRIER (THAILAND) CO.,LTD

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

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