Table of Contents
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FILE NO. SVM-04007-(1)
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-18UKHP-ES3 / RAS-18UAH-ES3
RAS-24UKP-ES3 / RAS-24UA-ES3
RAS-18UKP-ES3 / RAS-18UA-ES3
RAS-24UKHP-AS3 / RAS-24UAH-AS3
RAS-18UKHP-AS3 / RAS-18UAH-AS3
RAS-24UKP-AS3 / RAS-24UA-AS3
RAS-18UKP-AS3 / RAS-18UA-AS3
18 Class
18 Class
24 Class
(Heat pump model)
(Cooling only model)
May 2004
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Table of Contents
Troubleshooting
Related Manuals for Toshiba AS-24UKHP-ES3
Summary of Contents for Toshiba AS-24UKHP-ES3
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Page 1: Service Manual
FILE NO. SVM-04007-(1) SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-18UKHP-ES3 / RAS-18UAH-ES3 RAS-24UKP-ES3 / RAS-24UA-ES3 RAS-18UKP-ES3 / RAS-18UA-ES3 RAS-24UKHP-AS3 / RAS-24UAH-AS3 RAS-18UKHP-AS3 / RAS-18UAH-AS3 RAS-24UKP-AS3 / RAS-24UA-AS3 RAS-18UKP-AS3 / RAS-18UA-AS3 18 Class 18 Class 24 Class (Heat pump model) (Cooling only model) May 2004... -
Page 2: Table Of Contents
FILE NO. SVM-04007-(1) CONTENTS SPECIFICATIONS CONSTRUCTION VIEWS 2-1 Indoor Unit 2-2 Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3, RAS-24UAH-AS3, RAS-24UA-AS3) 2-3 Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) 2-4 Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) WIRING DIAGRAM 3-1 RAS-24UKHP-ES3 / RAS-24UAH-ES3, RAS-24UKHP-AS3 / RAS-24UAH-AS3 3-2 RAS-18UKHP-ES3 / RAS-18UAH-ES3, RAS-18UKHP-AS3 / RAS-18UAH-AS3 3-3 RAS-24UKP-ES3 / RAS-24UA-ES3, RAS-24UKP-AS3 / RAS-24UA-AS3 3-4 RAS-18UKP-ES3 / RAS-18UA-ES3, RAS-18UKP-AS3 / RAS-18UA-AS3 SPECIFICATION OF ELECTRICAL PARTS... - Page 3 FILE NO. SVM-04007 TROUBLESHOOTING CHART 9-1 Troubleshooting Procedure 9-2 Basic Check Items 9-3 Primary Judgement 9-4 Self-Diagnosis by Remote Control (Check Code) 9-5 How to Diagnose Faulty Part 9-6 Troubleshooting for Indoor Unit 9-7 Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) 9-8 Troubleshooting for P.C.
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Page 4: Specifications
FILE NO. SVM-04007 1. SPECIFICATIONS RAS-24UKHP-ES3 RAS-24UKP-ES3 RAS-18UKHP-ES3 RAS-18UKP-ES3 MODEL RAS-24UAH-ES3 RAS-24UA-ES3 RAS-18UAH-ES3 RAS-18UA-ES3 ITEM Cooling Heating Cooling Cooling Heating Cooling 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V Capacity 6.30 6.30 6.80 6.90 6.80 6.85 5.00 5.05 5.45 5.55 5.30 5.35... - Page 5 FILE NO. SVM-04007 RAS-24UKHP-AS3 RAS-24UKP-AS3 RAS-18UKHP-AS3 RAS-18UKP-AS3 MODEL RAS-24UAH-AS3 RAS-24UA-AS3 RAS-18UAH-AS3 RAS-18UA-AS3 ITEM Cooling Heating Cooling Cooling Heating Cooling 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V Capacity 6.30 6.30 6.80 6.90 6.80 6.85 5.00 5.05 5.45 5.55 5.30 5.35 Phase...
- Page 6 FILE NO. SVM-04007 Note : 1 · Capacity is based on the following temperature conditions. JIS C9612-1994 Condition Temperature Cooling Heating (DB) 27°C 20°C Indoor unit inlet air temperature (WB) 19°C 15°C (DB) 35°C 7°C Outdoor unit inlet air temperature (WB) 24°C 6°C...
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Page 7: Construction Views
FILE NO. SVM-04007 2. CONSTRUCTION VIEWS 2-1. Indoor Unit Back body Front panel Grille inlet Knock out system Knock out system Drain hose (0.54m) Connection pipe (0.39m) Connection pipe (0.49m) Wireless remote control (Flare ∅12.7) (Flare ∅6.35) 763.5 (For stud bolt ∅6) Outline of indoor unit Installation Plate outline... -
Page 8: Outdoor Unit (Ras-24Uah-Es3, Ras-24Ua-Es3, Ras-24Uah-As3, Ras-24Ua-As3)
FILE NO. SVM-04007 2-2. Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3, RAS-24UAH-AS3, RAS-24UA-AS3) – 7 –... -
Page 9: Outdoor Unit (Ras-18Uah-Es3, Ras-18Uah-As3)
FILE NO. SVM-04007 2-3. Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) – 8 –... -
Page 10: Outdoor Unit (Ras-18Ua-Es3, Ras-18Ua-As3)
FILE NO. SVM-04007 2-4. Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) – 9 –... -
Page 11: Wiring Diagram
FILE NO. SVM-04007 3. WIRING DIAGRAM 3-1. RAS-24UKHP-ES3 / RAS-24UAH-ES3 , RAS-24UKHP-AS3 / RAS-24UAH-AS3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN &YELLOW GREEN CN 07 CN 10 IC04 VARISTOR SG01 T6. -
Page 12: Ras-18Ukhp-Es3 / Ras-18Uah-Es3, Ras-18Ukhp-As3 / Ras-18Uah-As3
FILE NO. SVM-04007 3-2. RAS-18UKHP-ES3 / RAS-18UAH-ES3, RAS-18UKHP-AS3 / RAS-18UAH-AS3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN &YELLOW GREEN CN 07 CN 10 IC04 VARISTOR SG01 T6. 3A 250V DB01 F01 FUSE DC15V... - Page 13 FILE NO. SVM-04007 3-3. RAS-24UKP-ES3 / RAS-24UA-ES3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE YELLOW GRN&YEL GREEN & : GREEN CN 07 CN 10 IC04 SG01 VARISTOR DB01 T6.3A 250 V F01 FUSE DC15V DC0V...
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Page 14: Ras-18Ukp-Es3 / Ras-18Ua-Es3, Ras-18Ukp-As3 / Ras-18Ua-As3
FILE NO. SVM-04007 3-4. RAS-18UKP-ES3 / RAS-18UA-ES3, RAS-18UKP-AS3 / RAS-18UA-AS3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE YELLOW GRN&YEL GREEN & GREEN CN 07 CN 10 IC04 SG01 VARISTOR DB01 T6.3A 250 V F01 FUSE DC15V DC0V... - Page 15 FILE NO. SVM-04007 3-5. RAS-24UKP-AS3 / RAS-24UA-AS3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN & YELLOW : GREEN CN 07 CN 10 IC04 SG01 VARISTOR DB01 T6.3A 250 V F01 FUSE DC15V DC0V...
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Page 16: Specification Of Electrical Parts
ILE NO. SVM-04007 4. SPECIFICATION OF ELECTRICAL PARTS 4-1. Indoor Unit (RAS-24UKHP-ES3, RAS-18UKHP-ES3, RAS-24UKHP-AS3, RAS-18UKHP-AS3) Parts name Type Specifications Fan motor (for indoor) ICF-340-30-2 DC 340V, 30W Thermo sensor (TA-sensor) ——— 10kΩ at 25°C DC-DC transformer (T01) SWT-58A DC 390V, Secondary DC 15V, 12V, 7V Microcontroller TMP87CM40AN Heat exchanger sensor... -
Page 17: Outdoor Unit (Ras-18Uah-Es3, Ras-18Uah-As3)
FILE NO. SVM-04007 4-3. Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) Parts name Type Specifications Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz Compressor PA225X3F-4L Winding resistance (Ω) Red-Black White-Black (at 20°C) 1.35 2.68 Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz Fan motor (for outdoor) HF-240-42B-2 Winding resistance (Ω) -
Page 18: Outdoor Unit (Ras-24Ua-Es3, Ras-24Ua-As3)
FILE NO. SVM-04007-(1) 4-5. Outdoor Unit (RAS-24UA-ES3, RAS-24UA-AS3) Parts name Type Specifications Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz Compressor 5JS315DAB Winding resistance (Ω ) Red-Black White-Black (at 20°C) 0.83 2.257 Output (Rated) 65W, 6poles, 1 phase, 220 − 240V, 50Hz Fan motor (for outdoor) KFG6-71SB5P-T Winding resistance (Ω) Red-Black White-Black... -
Page 19: Refrigeration Cycle Diagram
FILE NO. SVM-04007 5. REFRIGERATION CYCLE DIAGRAM 5-1. RAS-24UKHP-ES3 / RAS-24UAH-ES3 RAS-24UKHP-AS3 / RAS-24UAH-AS3 Indoor unit Heat exchanger Cooling 0.49m 0.39m Heating (Connecting pipe) (Connecting pipe) ∅12.7 ∅6.35 Cross flow fan O.D.:12.7mm O.D.:6.35mm Packed valve Packed valve (∅12.7) (∅6.35) Gas container connection (Reinstall etc.) Heating Cooling 4-way valve... -
Page 20: Ras-18Ukhp-Es3 / Ras-18Uah-Es3, Ras-18Ukhp-As3 / Ras-18Uah-As3
FILE NO. SVM-04007 5-2. RAS-18UKHP-ES3 / RAS-18UAH-ES3 RAS-18UKHP-AS3 / RAS-18UAH-AS3 Indoor unit Evaporator Cooling 0.39m 0.49m Heating (Connecting pipe) (Connecting pipe) ∅12.7 ∅6.35 Cross flow fan O.D.:12.7mm O.D.:6.35mm Packed valve Packed valve (∅12.7) (∅6.35) Heating Cooling 4-way valve Heating Cooling Compressor PA225X3F-4L Capillary tube ∅1.0x1500s... -
Page 21: Ras-24Ukp-Es3 / Ras-24Ua-Es3, Ras-24Ukp-As3 / Ras-24Ua-As3
FILE NO. SVM-04007 5-3. RAS-24UKP-ES3 / RAS-24UA-ES3 RAS-24UKP-AS3 / RAS-24UA-AS3 Indoor unit Heat exchanger Cooling 0.49m 0.39m (Connecting pipe) (Connecting pipe) ∅12.7 ∅6.35 Cross flow fan O.D.:12.7mm O.D.:6.35mm Packed valve Packed valve (∅12.7) (∅6.35) Gas container connection (Reinstall etc.) Cooling Cooling Compressor 5JS315DAG01 Capillary tube... -
Page 22: Ras-18Ukp-Es3 / Ras-18Ua-Es3, Ras-18Ukp-As3 / Ras-18Ua-As3
FILE NO. SVM-04007 5-4. RAS-18UKP-ES3 / RAS-18UA-ES3 RAS-18UKP-AS3 / RAS-18UA-AS3 Indoor unit Evaporator Cooling 0.39m 0.49m (Connecting pipe) (Connecting pipe) ∅12.7 ∅6.35 Cross flow fan O.D.:12.7mm O.D.:6.35mm Packed valve Packed valve (∅12.7) (∅6.35) Cooling Cooling Compressor 5KS225DAA Capillary tube ∅1.7x600s Condenser Refrigerant R410A 1.14 kg... -
Page 23: Control Block Diagram
FILE NO. SVM-04007 6. CONTROL BLOCK DIAGRAM 6-1. RAS-24UKHP-ES3, RAS-18UKHP-ES3 / RAS-24UKHP-AS3, RAS-18UKHP-AS3 Indoor Unit Control Panel M.C.U. Functions Operation Heat Exchanger Sensor Display • Louver Control Timer Temperature Sensor • 3-minute Delay at Restart for Compressor Display Filter Sign Infrared Rays Signal Receiver •... -
Page 24: Ras-24Ukp-Es3, Ras-18Ukp-Es3, Ras-24Ukp-As3, Ras-18Ukp-As3
FILE NO. SVM-04007 6-2. RAS-24UKP-ES3, RAS-18UKP-ES3 / RAS-24UKP-AS3, RAS-18UKP-AS3 Indoor Unit Control Panel M.C.U. Functions Operation Heat Exchanger Sensor Display Louver Control Timer Temperature Sensor 3-minute Delay at Restart for Compressor Display Filter Sign Infrared Rays Signal Receiver Motor Revolution Control Display 20 sec Self Cleaning function Fan Only... -
Page 25: Operation Description
FILE NO. SVM-04007 7. OPERATION DESCRIPTION 7-1. Outline of Air Conditioner Control 7-1-1. Louver control (1) Vertical air flow louver This is a fixed capacity type air conditioner, which uses Position of veritcal air flow louver is automatically a DC motor for an indoor fan. The DC motor drive controlled according to the operation mode. -
Page 26: Description Of Operation Circuit
FILE NO. SVM-04007 7-2. Description of Operation Circuit 7-2-2. Cooling operation ([MODE] button on the remote control is set (1) When turning on the breaker, the operation lamp to the cooling operation.) blinks. This means that the power is on (or the (1) The compressor, 4-way valve, outdoor fan and power supply is cut off.) operation display lamp are controlled as shown in... - Page 27 FILE NO. SVM-04007 7-2-3. Dry operation 7-2-4. Heating operation *Heat pump model only ([MODE] button on the remote control is set ([MODE] button on the remote control is set to the dry operation.) to the heating operation.) (1) The compressor, 4-way valve, outdoor fan and (1) The compressor, 4-way valve, outdoor fan and operation display lamp are controlled as shown in operation display lamp are controlled as shown in...
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Page 28: Cooling Operation
FILE NO. SVM-04007 (3) The indoor heat exchanger restricts revolving 7-2-5. Automatic operation speed of the fan motor to prevent a cold draft. The ([MODE] button on the remote control is set upper limit of the revolving speed is shown in to the automatic operation.) Fig. -
Page 29: Hi Power Mode
FILE NO. SVM-04007 7-3. Hi POWER Mode 7-4. High-Temperature Limit Control ([Hi POWER] button on the remote *Heat pump model only control is pressed.) The microcontroller detects the indoor heat exchanger temperature to prevent pressure of a refrigerating cycle When [Hi POWER] button is pressed while the indoor from increasing excessively. -
Page 30: Auto Restart Function
FILE NO. SVM-04007 7-7-1. How to set auto restart function 7-7. Auto Restart Function To set the auto restart function, proceed as follows: The indoor unit is equipped with an automatic The power supply to the unit must be on; the function restarting function which allows the unit to restart will not set if the power is off. -
Page 31: Filter Check Lamp
FILE NO. SVM-04007 7-7-2. How to cancel auto restart function To cancel auto restart function, proceed as follows: Repeat the setting prodedure: the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote control after the main power supply is turned off. -
Page 32: Self-Cleaning Function
FILE NO. SVM-04007-(1) 7-9. Self-Cleaning function. Self-Cleaning function is designed to reduce humidity that causes mold to form inside the air conditioning unit. This advanced, efficient system reduces moisture in the coil. When you turn off your air conditioner, the internal fan activates and dries the moisture in the coil for 20 minutes, then turns off automatically. -
Page 33: Installation Procedure
FILE NO. SVM-04007 8. INSTALLATION PROCEDURE 8-1. Safety Cautions For general public use Power supply cord of Outdoor unit shall be more than 4 mm (H07RN-F or 245 IEC66 : polychloroprene sheathed flexible cord) or 3.5 mm (AWG-12). CAUTION New Refrigerant Air conditioner Installation •... - Page 34 Also, make sure the equipment is properly earthed. • Appliance shall be installed in accordance with national wiring regulations. If you detect any damage, do not install the unit. Contact your TOSHIBA dealer immediately. CAUTION • Exposure of unit to water or other moisture before installation could result in electric shock.
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Page 35: Installation Diagram Of Indoor And Outdoor Units
FILE NO. SVM-04007 8-2. Installation Diagram of Indoor and Outdoor Units Hook Installation For the rear left and left plate piping Wall Insert the cushion between the indoor unit and wall, and lift the indoor unit for better operation. Shield pipe Do not allow the drain Bioenzyme filter... -
Page 36: Installation
FILE NO. SVM-04007 8-3. Installation 8-3-1. Optional installation parts Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅6.35 mm each : ∅12.7 mm Gas side Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit> RAS-24UA-ES3,RAS-24UAH-ES3, RAS-24UA-AS3, RAS-24UAH-AS3 600 mm Air inlet... - Page 37 FILE NO. SVM-04007 8-3-2. Accessory and installation parts Part Part Part Part name (Q'ty) Part name (Q'ty) Part name (Q'ty) Installation plate x 1 Remote control holder x 1 Bioenzyme filter x 2 Mounting screw ∅4 x 25 s x 8 Wireless remote control x 1 Filter frame x 2 Pan head wood screw...
- Page 38 FILE NO. SVM-04007 8-3-3. 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) •...
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Page 39: Indoor Unit
FILE NO. SVM-04007 8-4-2. Cutting a hole and mounting installation 8-4. Indoor Unit plate 8-4-1. Installation place <Cutting a hole> • A place which provides the spaces around the When installing the refrigerant pipes from the rear. indoor unit as shown in the above diagram. •... - Page 40 FILE NO. SVM-04007 <When the installation plate is directly mounted on 8-4-3. Electrical work the wall> 1. The supply voltage must be the same as the rated 1. Securely fit the installation plate onto the wall by voltage of the air conditioner. screwing it in the upper and lower parts to hook up 2.
- Page 41 FILE NO. SVM-04007 8-4-4. Wiring connection CAUTION Air Inlet grille • Be sure to refer to the wiring system diagram labeled inside the front panel. • Check local electrical cords and also any specific Front panel wiring instructions or limitations. Connecting cable Fig.
- Page 42 FILE NO. SVM-04007 8-4-5. Piping and Drain Hose Installation To connect the pipe after installation of the unit (figure) <In case of rightward piping> (To the forefront of flare) • After scribing slits of the body-right by a knife or a 400 mm Liquid side making-off pin, cut them by a pair of nippers or the...
- Page 43 FILE NO. SVM-04007 8-4-6. Indoor unit fixing 8-4-7. Drainage 1. Pass the pipe through the hole in the wall, and hook 1. Run the drain hose sloped downwards. the indoor unit on the installation plate at the upper hooks. NOTE •...
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Page 44: Outdoor Unit
FILE NO. SVM-04007 8-5-2. Refrigerant piping connection 8-5. Outdoor Unit 1. Cut the pipe with a pipe cutter. 8-5-1. Installation place • A place which provides the spaces around the outdoor unit as shown in the left diagram. Roughness Warp Obliquity 90°... - Page 45 FILE NO. SVM-04007 (Unit : N·m) 8-5-3. Evacuating Outer dia. After the piping has been connected to the indoor unit, Tightening torque of copper pipe you can perform the air purge together at once. ∅6.35 mm 16 to 18 (1.6 to 1.8 kgf·m) AIR PURGE ∅9.52 mm 30 to 42 (3.0 to 4.2 kgf·m)
- Page 46 FILE NO. SVM-04007 8-5-4. Wiring connection TO CHARGE REFRIGERANT 1. Remove the valve cover from the outdoor unit. Refrigerant 18 Class 24 Class 2. Connect the connecting cable to the terminal as No need to charge 15 m or les s 15 m or les s identified with their respective matched numbers on refrigerant...
- Page 47 FILE NO. SVM-04007 2. Set the remote control selector switch with the 8-6. How to Set Remote Control Selector remote control Switch When two indoor units as installed in seperated rooms, [B] is indicated on the liquid crystal display when there is no need to change the selector switch.
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Page 48: Others
FILE NO. SVM-04007 8-7-3. Auto restart setting 8-7. Others This product is designed so that, after a power failure, 8-7-1. Gas leak test it can restart automatically in the same operating mode Electric parts cover as before the power failure. Information Flare nut connections The product was shipped with Auto Restart function... -
Page 49: Troubleshooting Chart
FILE NO. SVM-04007 9. TROUBLESHOOTING CHART 9-1. Troubleshooting Procedure : 9-2-2. Incorrect cable connection between Indoor and outdoor units Follow the details of 9-2. Basic Check Items. The indoor unit is connected to the outdoor unit with 4 If there is no trouble corresponding to 9-2, check cables. -
Page 50: Primary Judgement
FILE NO. SVM-04007 9-3. Primary Judgement 9-3-2. Failure diagnosis The indoor unit diagnoses the operation condition and 9-3-1. Role of indoor unit controller indicates the information of the self-diagnosis with the The indoor unit controller receives the operation lamps on the display panel of the indoor unit. commands from the remote control and executes them. -
Page 51: Self-Diagnosis By Remote Control (Check Code)
FILE NO. SVM-04007 9-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to G in Table 9-3-1, exchanger the self-diagnosis by the remote control. (2) When the remote control is set to the service mode, the indoor controller diagnoses the operation condition and indicate the information of the self-diagnosis on the display of the remote... - Page 52 FILE NO. SVM-04007 Table 9-4-1 Block level Diagnosis function Judgement and action Check Check Unit Block Symptom Condition code code status Indoor The indoor thermo sensor (TA) is Operation The lamp on the 1. Check the indoor thermo sensor (TA). P.C.
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Page 53: How To Diagnose Faulty Part
FILE NO. SVM-04007 9-5. How To Diagnose Faulty Parts Operation Check item Conceivable principle cause [04 Serial signal error] (Heat pump model) Measure Item by symptoms Does outdoor unit operate? Connect crossover Are 1, 2 and 3 crossover wires properly. wires connected properly? Is connector Connect connector... - Page 54 FILE NO. SVM-04007 [09 Other cycle error] (1) (Heat pump model) Does compressor operate? Does inner Check charged amount of refrigerant. Is compressor overload relay Check defective overload. turned off shortly? (in compressor) Check compressor. operate? Failure Replace Is TC sensor resistance value compressor.
- Page 55 FILE NO. SVM-04007 [0C Indoor TA sensor error] Is CN04 (TA sensor connector) Connect CN04 properly. connected properly? Is TA sensor resistance value Replace TA sensor. (10 kΩ at 25°C) normal? Indoor P.C. board is defective. Replace P.C. board. [0d Indoor TC sensor error] Is CN05 (TC sensor connector) Connect CN05 properly.
- Page 56 FILE NO. SVM-04007 [19 outdoor TD sensor error] (Heat pump model) Connect connector Is TD sensor connected properly? properly. Is TD sensor resistance value Replace TD sensor. (50 kΩ at 25°C) normal? Outdoor P.C. board is defective. Replace P.C. board. [1E Discharge temp.
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Page 57: Troubleshooting For Indoor Unit
FILE NO. SVM-04007 9-6. Troubleshooting for Indoor unit 9-6-1. Power can not be turned on. (The unit does not operate at all.) <Primary check> Operation (1) Is the supply voltage normal? (2) Is the connection to the AC output OK? Check item (3) Are the connection of the primary side and the secondary side of the power transformer inserted into the P.C. - Page 58 FILE NO. SVM-04007 9-6-2. Only indoor fan motor does not operate. <Primary check> (1) Is it possible to detect the power supply voltage (200 – 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 5 minutes after it is turned on, to prevent a cold air from blowing in.) Turn off power...
- Page 59 FILE NO. SVM-04007 9-6-3. 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 the 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.
- Page 60 FILE NO. SVM-04007 9-6-4. Compressor does not operate. <Primary check> (1) Is the preset temperature higher than the room temperature in cooling operation? (2) Is the crossover cable connected properly? <Inspection procedure> -Cooling only model- – 58 –...
- Page 61 FILE NO. SVM-04007 <Inspection procedure> - Cooling model - Turn on power supply. Refer to item Power Does OPERATION can not be turned on . lamp blink? Refer to 9-9 Troubleshooting Is it possible to start for Remote Control . unit by remote control? Is it possible to detect AC 200V Replace P.C.
- Page 62 FILE NO. SVM-04007 <Inspection procedure) - Heating model - AC 70-100V Replace transformer outdoor P.C. board. − 60 −...
- Page 63 FILE NO. SVM-04007 Rewire or replace Are all of compressor cords normal? defective cords. Is compressor motor winding normal? Replace compressor. Compressor is defective. (Check winding resistor.) Is capacitor for compressor normal? Replace capacitor. Capacitor is defective. Replace overload relay. Is overload relay normal? Overload relay is defective.
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Page 64: Troubleshooting For Wiring (Interconnect Cable And Serial Signal Wire)
FILE NO. SVM-04007 9-7. Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) 9-7-1. Outdoor unit does not operate. <Inspection procedure> (1) Is the voltage between of the indoor terminal block varied? (2) Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram? NOTE: Measure the voltage for 2 minutes and 30 seconds after starting the unit. -
Page 65: Troubleshooting For P.c. Board
FILE NO. SVM-04007 9-8. Troubleshooting for P.C. board <Inspection procedure> (1) If the P.C. board is detective, check for disconnec- 9-8-1. How to check indoor P.C. board tion, burn or discoloration of the copper foil pattern of the P.C. board. <Cautions for handling P.C. - Page 66 FILE NO. SVM-04007 Procedure Check points Causes 1. The temperature of the indoor Press [START/STOP] button once 1. Check whether or not the heat exchanger is extremely low. to start the unit. compressor operates. • Shorten the time of the restart 2.
- Page 67 FILE NO. SVM-04007 9-8-3. P.C. Board layout Top View Bottom View − 65 −...
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Page 68: Troubleshooting For Remote Control
FILE NO. SVM-04007 9-9. Troubleshooting for Remote Control The unit does not beep at all. Press START/STOP OPERATION lamp on button. indoor unit is not indicated. Is transmission mark indicated? Press RESET button on remote control Is receiver on with tip of pencil. indoor unit exposed to direct sunlight? Does indoor unit... -
Page 69: Part Replacement
FILE NO. SVM-04007 10. PART REPLACEMENT 10-1. Indoor Unit Part name Procedures Remarks Front panel How to remove the front panel 1) Stop the operation of the air conditioner and turn off its main power supply. 2) Pull the inlet grille toward you to open it and remove 4 screws fixing the front panel. - Page 70 FILE NO. SVM-04007 Part name Procedures Remarks Horizontal grille 1) Remove center 2 shafts of the horizontal grille from (1) Center shafts the back body. 2) Remove left shaft of the horizontal grille from the back body. (2) Left shafts 3) Remove the horizontal grille from the back body.
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Page 71: Outdoor Unit (Ras-24Uah-Es3, Ras-24Ua-Es3, Ras-24Uah-As3, Ras-24Ua-As3)
FILE NO. SVM-04007 10-2. Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3, RAS-24UAH-AS3, RAS-24UA-AS3) Part name Procedures Remarks Common 1) Stop the operation of the air conditioner and turn off Top cabinet procedure its main power supply or remove the power supply Electrical cord. parts cover 2) Remove the electrical parts cover. - Page 72 FILE NO. SVM-04007 Part name Procedures Remarks 1) Perform the common procedure 1 Electric starter Running capacitor 2) Remove the fixing screw. (1 screw ∅ 4 x 12L) Starting (RAS-24UA-AS3) for compressor Spark killer capacitor for 3) Disconnect the lead wires from the terminal. compressor Running capacitor...
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Page 73: Outdoor Unit (Ras-18Uah-Es3, Ras-18Uah-As3)
FILE NO. SVM-04007 10-3. Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) Part name Procedures Remarks Common 1) Stop the operation of the air conditioner and turn off procedure its main power supply or remove the power supply cord. 2) Remove the electrical parts cover. (4 screws ∅4 x 10L) 3) Remove 2 cord clamps (4 screws ∅4 x 22L) and Remove... -
Page 74: Outdoor Unit (Ras-18Ua-Es3, Ras-18Ua-As3)
FILE NO. SVM-04007 10-4. Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) Part name Procedures Remarks Common 1) Stop the operation of the air conditioner and turn off procedure its main power supply or remove the power supply cord. 2) Remove the electrical parts cover. (2 screws ∅4 x 10L) 3) Remove 2 cord clamps (4 screws ∅4 x 22L) and Remove... -
Page 75: Exploded Views And Parts List
FILE NO. SVM-04007 11. EXPLODED VIEWS AND PARTS LIST 11-1. Indoor Unit (E-Parts Assy) Location Part Location Part Description Description 43T60002 Terminal Block, 3P 43T69376 P.C. Board ASSY 3P AC300V, 20A (RAS-24UKP-ES3 / AS3) 43T50004 Sensor, Heat Exchanger 43T69377 P.C. Board ASSY 10k 25°C (RAS-18UKHP-ES3 / AS3) 43T69005 Sensor, Thermostat 10k 25°C... -
Page 76: Indoor Unit
FILE NO. SVM-04007-(1) 11-2. Indoor Unit Location Location P a r t Part Description Description 43T00048 Front Panel, ASSY 43T49038 Plate, EVA-Seal 43T00049 Grille ASSY (For Heat pump model) 43T49037 Holder , Plate EV A-Seal 43T00050 Grille ASSY (For cooling only model) 43T79007 Guide Drain 43T80306 Air Filter (L) 43T39016 Fix Motor... -
Page 77: Outdoor Unit (Ras-24Uah-Es3, Ras-24Uah-As3)
FILE NO. SVM-04007-(1) 11-3. Outdoor Unit (RAS-24UAH-ES3, RAS-24UAH-AS3) 33, 34 12, 14 11, 13 Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T49012 Base, Spring, B 43T00025 Panel, Front 43T49019 Spring, Buffer 43T00026 Panel, Side 43T21315 Motor, Fan, AC 220 − 240V 50Hz 43T42002 Base Assembly 43T20301 Fan, Propeller, 491 43T19318 Guard, Fin... -
Page 78: Outdoor Unit (Ras-18Uah-Es3, Ras-18Uah-As3)
FILE NO. SVM-04007 11-4. Outdoor Unit (RAS-18U AH-ES3, RAS-18UAH-AS3) Location Part Location Part Description Description 43005144 Cabinet, Front 43T47308 Capillary Tube, 1.0Dia. 43T00005 Cabinet, Back 43T47014 Capillary Tube, 1.7Dia. 43T00004 Cabinet, Side 43T49008 Cushion, Rubber 43T42305 Base 43T55316 MF Capacitor (45µ F 370V) 43T00011 Plate, Packed, Valve 43T55318 MF Capacitor (2µ... -
Page 79: Outdoor Unit (Ras-24Ua-Es3, Ras-24Ua-As3)
FILE NO. SVM-04007 11-5. Outdoor Unit (RAS-24UA-ES3) Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T62014 Protector, Cord 43T00025 Panel, Front 43T62015 Protector, Cord 43T00026 Panel, Side 43T49309 Rubber Cushion 43T42307 Base Assembly 43T21314 Motor, Fan, AC 220 − 240V 50Hz 43T19318 Guard, Fin 43T20301 Fan, Propeller, 491 43T19011 Guard, Fan... - Page 80 FILE NO. SVM-04007 11-6. Outdoor Unit (RAS-24UA-AS3) Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T62014 Protector, Cord 43T00025 Panel, Front 43T62015 Protector, Cord 43T00026 Panel, Side 43T49309 Rubber Cushion 43T42307 Base Assembly 43T21314 Motor, Fan, AC 220 − 240V 50Hz 43T19318 Guard, Fin 43T20301 Fan, Propeller, 491 43T19011 Guard, Fan...
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Page 81: Outdoor Unit (Ras-18Ua-Es3, Ras-18Ua-As3)
FILE NO. SVM-04007 11-7. Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) Location Part Location Part Description Description 43005144 Cabinet, Front 43T46317 Valve, Packed 6.35Dia. 43T47020 Bonnet, 6.35Dia. 43005143 Cabinet, Side 43T46318 Valve, Packed 12.7Dia. 43T42312 Base 43T47018 Bonnet, 12.7Dia 43T00378 Plate, Packed, Valve 43T47014 Capillary Tube, 1.7Dia. - Page 82 FILE NO. SVM-03009(1) TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000,THAILAND. – 75 –...