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

SERVICE MANUAL

AIR CONDITIONER SPLIT WALL TYPE RAS-24UKHP-E3 / RAS-24UAH-E3 RAS-18UKHP-E3 / RAS-18UAH-E3 RAS-24UKP-E3 / RAS-24UA-E3 RAS-18UKP-E3 / RAS-18UA-E3 RAS-24UKP-AR3 / RAS-24UA-AR3 RAS-18UKP-AR3 / RAS-18UA-AR3 RAS-24UKPX3 / RAS-24UAX3 RAS-18UKPX3 / RAS-18UAX3 RAS-24UKPX3-T / RAS-24UAX3-T RAS-18UKPX3-T2 /…

CONTENTS

1. SPECIFICATIONS 2. CONSTRUCTION VIEWS 2-1 2-2 2-3 2-4 3. WIRING DIAGRAM 3-1 3-2 3-3 3-4 3-5 3-6 4. 4-5 4-6 4-7 4-8 4-9 Indoor Unit (RAS-24UKHP-E3, RAS-18UKHP-E3) Outdoor Unit (RAS-24UAH-E3) Outdoor Unit (RAS-18UAH-E3) Indoor Unit (RAS-24UKP-E3, RAS-24UKPX3, RAS-24UKP-AR3, RAS-24UKPX3-T…

OPERATION DESCRIPTION 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 8. 9. Outline of Air Conditioner Control Description of Operation Circuit Hi POWER Mode High-Temperature Limit Control Low-Temperature Limit Control Defrosting Operation Auto Restart Function Filter Check Lamp Self-Cleaning function…

1. SPECIFICATIONS

MODEL ITEM RAS-24UKHP-E3 RAS-24UKP-E3 RAS-24UKPX3 RAS-24UKP-AR3 RAS-24UKPX3-T RAS-24UAH-E3 RAS-24UA-E3 RAS-24UAX3 RAS-24UA-AR3 RAS-24UAX3-T Cooling Cooling Cooling Cooling Cooling Capacity kW Heating 220 V 240 V 220 V 240 V 220 V 240 V 220 V 6.30 6.30 6.80 6.90 6.40 6.45 6.40 Phase Power source V W…

MODEL

ITEM RAS-18UKHP-E3 RAS-18UKP-E3 RAS-18UKPX3 RAS-18UKP-AR3 RAS-18UKPX3-T2 RAS-18UAH-E3 RAS-18UA-E3 RAS-18UAX3 RAS-18UA-AR3 RAS-18UAX3-T2 Cooling Cooling Cooling Cooling Cooling Capacity kW Heating 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 5.05 5.05 5.80 5.90 5.20 5.25 5.20…

Note : 1

2. CONSTRUCTION VIEWS

2-1. Indoor Unit Back body 998 Front panel Grille inlet 51 50 Knock out system 50 Knock out system Drain hose (0.54 m) Connection pipe (0.49 m) (Flare ∅6.35) Connection pipe (0.39 m) (For 24 series and RAS-18UKPX3-T2 : Flare ∅15.88) (For 18 series except RAS-18UKPX3-T2 : Flare ∅12.7) (For stud bolt…

50 ∅12x18 hole 27 A Detail Drawing 600 340 4-∅12x18 holes (for ∅8 − ∅10 anchor bolt) 63.8 Handle ∅25 Drain outlet Handle 68 52 –7– 74 88 A or more 100 or more 364 340 (pitch) 310 Air outlet Air inlet 600 4-∅12x18 for ∅8 − ∅10 anchor bolt 12 Service Port Liquid side (Flare ∅6.35) Gas side (Flare…

Handle

300 ∅11x14 hole ∅420 ∅6 hole 90 Fan guard A 600 830 ∅25 Drain outlet or more 344 Air outlet Air inlet 4x∅11x14 for ∅8 − ∅10 anchor bolt 600 or more –8– Gas side (Flare ∅12.7) Liquid side (Flare ∅6.35) Electric Parts cover 600 or more 600 Air inlet Installation dimension 100 or more Service Port 8-∅6…

300 Handle ∅11x14 hole 50 35 ∅6 hole 23 R10 52.5 325 ∅420 Fan guard 90 A 65.5 27 8-∅6 hole ∅25Drain outlet 4-∅11x14 hole (for fixing outdoor unit) (for ∅8 − ∅10 anchor bolt) Air outlet 344 600 or more Service Port Gas side (Flare ∅12.7) Liquid side (Flare ∅6.35) Electric parts cover 100 or more Air…

3. WIRING DIAGRAM

3-1. RAS-24UKHP-E3 / RAS-24UAH-E3 R22 BLK P04 FAN MOTOR LOUVER MOTOR DC MOTOR BLU PNK YEL ORN RED BRW COLOR IDENTIFICATION BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE GRN&YEL : GREEN &YELLOW GRN : GREEN CN 07 CN 10 R09 1 1 IC04 SG01…

3-2. RAS-18UKHP-E3 / RAS-18UAH-E3

R22 BLK P04 FAN MOTOR LOUVER MOTOR DC MOTOR BLU PNK YEL ORN RED BRW COLOR IDENTIFICATION BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE GRN&YEL : GREEN &YELLOW GRN : GREEN CN 07 CN 10 R09 1 1 IC04 SG01 VARISTOR DSA T6. 3A 250 V L01 R01 DB01…

RAS-24UKPX3 / RAS-24UAX3, RAS-24UKPX3-T / RAS-24UAX3-T R22 BLK P04 FAN MOTOR LOUVER MOTOR DC MOTOR BLU PNK YEL ORN RED BRW COLOR IDENTIFICATION BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE GRN&YEL : GREEN & YELLOW GRN : GREEN CN 07 CN 10…

3-4. RAS-18UKP-E3 / RAS-18UA-E3, RAS-18UKPX3 / RAS-18UAX3

COLOR IDENTIFICATION BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE GRN&YEL GREEN & YELLOW GRN : GREEN R22 BLK P04 FAN MOTOR LOUVER MOTOR BLU PNK YEL ORN RED BRW DC MOTOR CN 07 CN 10 R09 1 1 IC04 SG01 VARISTOR DSA T6.3A 250 V L01 R01 DB01 T01…

3-6. RAS-18UKPX3-T2 / RAS-18UAX3-T2

R22 BLK P04 FAN MOTOR LOUVER MOTOR DC MOTOR BLU PNK YEL ORN RED BRW COLOR IDENTIFICATION BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE GRN&YEL : GREEN & YELLOW GRN : GREEN CN 07 CN 10 R09 1 1 IC04 SG01 VARISTOR DSA T6.3A 250 V L01 DB01 R01…

4. SPECIFICATION OF ELECTRICAL PARTS

4-3. Outdoor Unit (RAS-18UAH-E3)

4-5. Outdoor Unit (RAS-24UA-E3, RAS-24UAX3, RAS-24UAX3-T)

4-8. Outdoor Unit (RAS-18UA-AR3)

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-24UKHP-E3 / RAS-24UAH-E3 Cooling 0.39 m (Connecting pipe) ∅15.88 T Indoor unit Evaporator 0.49 m (Connecting pipe) ∅6.35 Heating Cross flow fan O.D.:15.88 mm O.D.:6.35 mm P Packed valve (∅15.88) Gas container connection (Reinstall etc.) Packed valve (∅6.35) Heating Cooling 4-way valve…

5-2. RAS-18UKHP-E3 / RAS-18UAH-E3

Cooling 0.49 m (Connecting pipe) ∅12.7 T Indoor unit Evaporator 0.39 m (Connecting pipe) ∅6.35 Heating Cross flow fan O.D.:12.7 mm O.D.:6.35 mm P Packed valve (∅6.35) Packed valve (∅12.7) Gas container connection (Reinstall etc.) Heating Cooling 4-way valve Capillary tube ∅0.8x500 s Heating Cooling…

T Indoor unit Evaporator Cooling 0.39 m (Connecting pipe) ∅15.88 0.49 m (Connecting pipe) ∅6.35 Cross flow fan P O.D.:15.88 mm O.D.:6.35 mm Packed valve (∅15.88) Gas container connection (Reinstall etc.) Packed valve (∅6.35) Cooling Cooling Compressor 2JS386D5BB02 Capillary tube ∅2.4x650 s…

5-4. RAS-24UKPX3 / RAS-24UAX3

RAS-24UKPX3-T / RAS-24UAX3-T T Indoor unit Evaporator Cooling 0.39 m (Connecting pipe) ∅15.88 0.49 m (Connecting pipe) ∅6.35 Cross flow fan P O.D.:15.88 mm O.D.:6.35 mm Packed valve (∅15.88) Gas container connection (Reinstall etc.) Packed valve (∅6.35) Cooling Cooling Compressor 2JS386D5BB02…

T Indoor unit Evaporator 0.39 m (Connecting pipe) ∅12.7 0.49 m (Connecting pipe) ∅6.35 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm P Packed valve (∅12.7) Packed valve (∅6.35) Capillary tube ∅2.0x700 s Compressor 2JS350D5DA02 Dryer Condenser Refrigerant R22 1.05 kg Propeller fan Outdoor unit ) means…

5-6. RAS-18UKPX3 / RAS-18UAX3

T Indoor unit Evaporator 0.49 m (Connecting pipe) ∅6.35 0.39 m (Connecting pipe) ∅12.7 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm P Packed valve (∅12.7) Packed valve (∅6.35) Capillary tube ∅2.0x700 s Compressor 2JS350D5DA02 Dryer Condenser Refrigerant R22 1.05 kg Propeller fan Mark ( Outdoor unit…

T Indoor unit Evaporator 0.49 m (Connecting pipe) ∅6.35 0.39 m (Connecting pipe) ∅12.7 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm P Packed valve (∅12.7) Packed valve (∅6.35) Capillary tube ∅2.0x1000 s Accumulator Capillary tube ∅0.8x900 s Compressor 2JS350D5DA02 Dryer Condenser Refrigerant R22 1.17 kg…

5-8. RAS-18UKPX3-T2 / RAS-18UAX3-T2

T Indoor unit Evaporator 0.49 m (Connecting pipe) ∅6.35 0.39 m (Connecting pipe) ∅15.88 Cross flow fan O.D.:15.88 mm O.D.:6.35 mm P Packed valve (∅15.88) Packed valve (∅6.35) Capillary tube ∅2.0x800 s Accumulator Compressor PH210T2-4L7 Condenser Refrigerant R22 1.47 kg Propeller fan Mark ( Outdoor…

6. CONTROL BLOCK DIAGRAM

6-1. RAS-24UKHP-E3, RAS18UKHP-E3 Indoor Unit Control Panel M.C.U. Operation Display • 3-minute Delay at Restart for Compressor Timer Display • Motor Revolution Control Filter Sign Display Initiallizing Circuit • Processing (Temperature Processing) PRE DEF. Sign Display Clock Frequency Oscillator…

6-2. RAS-18UKP-E3 / RAS-18UA-E3, RAS-18UKPX3 / RAS-18UAX3

RAS-18UKP-AR3 / RAS-18UA-AR3, RAS-18UKPX3-T2 / RAS-18UAX3-T2 RAS-24UKP-E3 / RAS-24UA-E3, RAS-24UKPX3 / RAS-24UAX3 RAS-24UKP-AR3 / RAS-24UA-AR3, RAS-24UKPX3-T / RAS-24UAX3-T Indoor Unit Control Panel M.C.U. • Louver Control Operation Display • 3-minute Delay at Restart for Compressor Timer Display •…

7. OPERATION DESCRIPTION

7-1. Outline of Air Conditioner Control 7-1-1. Louver control This is a fixed capacity type air conditioner, which uses a DC motor for an indoor fan. The DC motor drive circuit is mounted in the indoor unit. And electrical parts which operate the compressor and the outdoor fan motor, are mounted in…

7-2-2. Cooling operation

([MODE] button on the remote control is set to the cooling operation.) 7-2. Description of Operation Circuit (1) When turning on the breaker, the operation lamp blinks. This means that the power is on (or the power supply is cut off.) 0 Fig. 7-2-2 +3 M+ +2.5 *1 +2 *1 (2) When [FAN] button is set to…

(1) The compressor, 4-way valve, outdoor fan and

operation display lamp are controlled as shown in Fig. 7-2-6. −0.5 ON ON Outdoor fan OPERATION display lamp Outdoor fan 4-way valve OFF Common relay OFF 0 OPERATION display lamp +1 OFF ON ON OFF ON 4-way valve ON 0 Common relay ON OFF Preset temp. Compressor +2 °C (Room temp.) − (Preset temp.) +3…

(3) The indoor heat exchanger restricts revolving

speed of the fan motor to prevent a cold draft. The upper limit of the revolving speed is shown in Fig. 7-2-8 and Table 7-2-1. Manual (One of AUTO 5 steps) *4 SUL*3 *2 A+4 A+4 A-8 A-8 *6 L-H (Up to setting speed) 7-2-5. Automatic operation ([MODE] button on the remote control is set to the automatic…

7-3. Hi POWER Mode

([Hi POWER] button on the remote control is pressed.) 7-4. High-Temperature Limit Control *Heat pump model only When [Hi POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi POWER mark is indicated on the display of the remote control and the unit operates as…

7-7. Auto Restart Function

7-7-1. How to set auto restart function The 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 power supply being accidentally shut down. The operation will resume without warning three minutes…

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. When the unit is on standby (Not operating) Operation…

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…

8. INSTALLATION PROCEDURE

8-1. Safety Cautions For general public use Power supply cord of Outdoor unit shall be more than 4 mm2 (H07RN-F or 245 IEC66 : polychloroprene sheathed flexible cord) or 3.5 mm2 (AWG-12). CAUTION To Disconnect the Appliance from the Main Power Supply. This appliance must be connected to the main…

REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER

Please make absolutely sure that the installation of this appliance is reported to the local power supplier before installation. If you experience any problems, or if the installation is not accepted by the supplier, the service agency will take adequate countermeasures. Remark per EMC Directive…

65 mm or more

8-2. Installation Diagram of Indoor and Outdoor Units 170 or m mm ore Hook 1 Installation plate Hoo lter the fron t pa nel) (Att ach to 7 Bioenzyme filter 6 Zeolite filter Wall 170 or m mm ore k Air fi (Att ach to For the rear left and left piping Shield pipe the air filte r) Insert the cushion…

8-3. Installation

8-3-1. Optional installation parts Part Code Parts name Q'ty A Refrigerant piping Liquid side : ∅6.35 mm Gas side : ∅12.70 mm (18 series except RAS-18UKPX3-T2 / RAS-18UAX3-T2) : ∅15.88 mm (24 series and RAS-18UKPX3-T2 / RAS-18UAX3-T2) One each B Pipe insulating material (polyethylene foam, 6 mm…

8-3-2. Accessory and installation parts

Part No. Part name (Q'ty) 1 Part No. Part name (Q'ty) 4 Installation plate x 1 2 Remote control holder x 1 Wireless remote control x 1 Others Bioenzyme filter x 2 8 Mounting screw ∅4 x 25 s x 8 Filter frame x 2 6 Battery x 2 Part name (Q'ty) Part No. 9 Pan head wood screw ∅3.1 x 16 s x 2 Zeolite…

8-4-2. Cutting a hole and mounting installation

plate 8-4. Indoor Unit 8-4-1. Installation place • A place which provides the spaces around the indoor unit as shown in the above diagram. • A place where there is no obstacle near the air inlet and outlet. • A place that allows easy installation of the piping to the outdoor unit. • A place which…

<When the installation plate is directly mounted on

the wall> 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, utilize the anchor bolt holes as illustrated in the above figure. 3. Install the…

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 wiring instructions or limitations. Front panel 2 1 Connecting cable abo ut 1 5 Fig. 8-4-6 Terminal block Cord clamp cm <Stripping length of…

8-4-5. Piping and Drain Hose Installation

<In case of rightward piping> To connect the pipe after installation of the unit (figure) (To the forefront of flare) • After scribing slits of the body-right by a knife or a making-off pin, cut them by a pair of nippers or the like. 400 mm 300 mm Liquid side Gas side 43 mm Outward form of indoor…

8-4-7. Drainage

8-4-6. Indoor unit fixing 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 NOTE hooks. 2. Swing the indoor unit to right and left to confirm that • Hole should be made at a slight downward slant on…

8-5. Outdoor Unit

8-5-2. Refrigerant piping connection 8-5-1. Installation place 1. Cut the pipe with a pipe cutter. • 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…

Outer dia. of copper pipe Tightening torque ∅6.35 mm 16 to 18 (1.6 to 1.8 kgf·m) ∅12.70 mm 50 to 62 (5.0 to 6.2 kgf·m) ∅15.88 mm 65 to 80 (6.5 to 8.0 kgf·m) After the piping has been connected to the indoor unit, you can perform the air purge together at once. AIR PURGE Evacuate the air in the…

<Stripping length of connecting cable>

TO CHARGE REFRIGERANT RAS-24UKHP-E3 / RAS-24 UAH-E3 RAS-24UKP-E3 / RAS-24 UA-E3 RAS-24UKPX3 / RAS-24 UAX3 RAS-24UKP-AR3 / RAS-24 UA-AR3 RAS-24UKPX3- T / RAS-24UAX3-T RAS-18UKHP-E3 / RAS-18UAH-E3 RAS-18UKP-E3 / RAS-18UA-E3 RAS-18UKPX3 / RAS-18UAX3 RAS-18UKP-AR3 / RAS-18UA-AR3 RAS-18UKPX3-T2 /…

2. Set the remote control selector switch with the

remote control 8-6. How to Set Remote Control Selector Switch When two indoor units as installed in seperated rooms, there is no need to change the selector switch. [B] is indicated on the liquid crystal display when setting remote control selector switch to B. [A] is not indicated on the display…

8-7. Others

8-7-3. Auto restart setting 8-7-1. Gas leak test This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure. Electric parts cover C D Information Flare nut connections (Indoor unit) The product was shipped with Auto…

9. TROUBLESHOOTING CHART

9-2-2. Incorrect cable connection between Indoor and outdoor units 9-1. Troubleshooting Procedure : Follow the details of 9-2. Basic Check Items. If there is no trouble corresponding to 9-2, check whether or not there are faulty parts following 9-4. Self-Diagnosis by Remote Control. The indoor unit…

9-3. Primary Judgement

9-3-2. Failure diagnosis 9-3-1. Role of indoor unit controller The indoor unit diagnoses the operation condition and indicates the information of the self-diagnosis with the lamps on the display panel of the indoor unit. The indoor unit controller receives the operation commands from the remote…

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…

Table 9-4-1

Block level Check code Block Indoor P.C. board Cable connection Outdoor P.C. board Other parts (including compressor) Diagnosis function Check code Symptom Unit status Condition Judgement and action The indoor thermo sensor (TA) is defective. Disconnection or short-circuit Operation continues. The…

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? NO YES Are 1, 2 and 3 crossover wires connected properly? NO Connect crossover wires properly. NO Connect connector properly. YES Is connector connected…

[09 Other cycle error] (1) (Heat pump model)

Does compressor operate? NO YES Is compressor turned off shortly? YES NO Does inner overload relay (in compressor) operate? Check charged amount of refrigerant. Check defective overload. Check compressor. YES NO NO Failure Is TC sensor resistance value (10 kΩ at 25°C) normal? Replace compressor. YES…

[0C Indoor TA sensor error]

[19 outdoor TD sensor error] (Heat pump model)

Is TD sensor connected properly? Connect connector properly. NO YES Is TD sensor resistance value (50 kΩ at 25°C) normal? NO Replace TD sensor. YES Outdoor P.C. board is defective. Replace P.C. board. [1E Discharge temp. error] (Heat pump model) Is protective controller such as discharge thermostat…

9-6. Troubleshooting for Indoor unit

9-6-1. Power can not be turned on. (The unit does not operate at all.) <Primary check> (1) Is the supply voltage normal? (2) Is the connection to the AC output OK? (3) Are the connection of the primary side and the secondary side of the power transformer inserted into the P.C. board? (4) Is the fuse…

9-6-2. Only indoor fan motor does not operate

<Primary check> (1) Is it possible to detect the power supply voltage (200 – 240 V) 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…

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. <Inspection procedure> (1) Remove the front…

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- – 63 –

<Inspection procedure>

- Colling model Turn on power supply. Does OPERATION lamp blink? Refer to item Power can not be turned on . NO YES Is it possible to start unit by remote control? Refer to 9-9 Troubleshooting for Remote Control . NO YES Is it possible to detect AC 200V between 2 and 3 on terminal block? Replace P.C.…

<Inspection procedure)

- Heating model - AC 70-100V Replace transformer outdoor P.C. board. − 65 −

YES

Are all of compressor cords normal? NO Rewire or replace defective cords. YES Is compressor motor winding normal? (Check winding resistor.) NO Compressor is defective. Replace compressor. Capacitor is defective. Replace capacitor. Overload relay is defective. Replace overload relay. Compressor is…

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 1 and 2 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…

9-8. Troubleshooting for P.C. board

9-8-1. How to check indoor P.C. board <Cautions for handling P.C. board> (1) When removing the front panel and the P.C. board, be sure to turn off the power supply. (2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts. (3) When connecting or…

No

Procedure Check points Causes 5 Press [START/STOP] button once to start the unit. • Shorten the time of the restart delay timer. • Set the operation mode to COOL. • Set the fan speed level to AUTO. • Set the preset temperature much lower than the room temperature. (The unit (compressor) operates…

Top View Bottom View – 70 –

9-9. Troubleshooting for Remote Control

Press START/STOP button. Is transmission mark indicated? The unit does not beep at all. OPERATION lamp on indoor unit is not indicated. NO YES Is receiver on indoor unit exposed to direct sunlight? Press RESET button on remote control with tip of pencil. NO YES Is there any thyristor fluorescent…

10. PART REPLACEMENT

10-1. Indoor Unit No. 1 Part name Front panel Procedures Remarks 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. 3) Remove upper 3 hooks of the…

No

Part name 3 Horizontal grille 4 Heat exchanger Procedures Remarks 1) Remove center 2 shafts of the horizontal grille from the back body. 2) Remove left shaft of the horizontal grille from the back body. 3) Remove the horizontal grille from the back body. 1) Remove the front panel, electrical parts…

10-2. Outdoor Unit (RAS-24UAH-E3, RAS-24UA-E3, RAS-24UAX3, RAS-24UA-AR3,

RAS-24UAX3-T, RAS-18UAX3-T2) No. 1 Part name Common procedure Procedures 1) Stop the operation of the air conditioner and turn off 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…

10-3 Outdoor Unit (RAS-18UAH-E3)

No. 1 Part name Common procedure Procedures Remarks 1) Stop the operation of the air conditioner and turn off its main power supply or remove the power supply cord. 2) Remove the electrical parts cover. (4 screws ∅ 4 x 10L) Remove 3) Remove 2 cord clamps (4 screws ∅ 4 x 22L) and 8 screws Ø4 x 10L…

10-4 Outdoor Unit (RAS-18UA-E3, RAS-18UAX3, RAS-18UA-AR3)

No. 1 Part name Common procedure Procedures 1) Stop the operation of the air conditioner and turn off 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 disconnect the power supply cord and…

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (E-Parts Assy) Location No. Part No. Description 405 Location No. 402 403 43T60002 Terminal Block, 3P 43T50004 Sensor, Heat Exchanger 43T69005 Sensor, Thermostat 43T69066 P.C. Board Assy, WRS-LED MCC-819 43T69375 P.C. Board ASSY (RAS-24UKHP-E3) – 77 – Part No. Description 43T69376…

11-2. Indoor Unit

Location No. Part No. Description 43T00048 43T00049 43T00050 43T80306 43T80304 43T80003 43T01004 43T03010 43T03011 43T03012 43T09317 43T70301 43T21302 43T44310 43T44311 43T47311 43T47016 43T47316 43T49010 43T19003 43T49009 43T49036 43T49039 43T49038 43T49037 43T79007 43T39016 43T60075 43T21327…

11-3. Outdoor Unit (RAS-24UAH-E3)

11-4. Outdoor Unit (RAS-18UAH-E3)

11-5. Outdoor Unit (RAS -24UA-E3, RAS -24UAX3, RAS -24UAX3-T)

11-6. Outdoor Unit (RAS -24UA-AR3)

11-7. Outdoor Unit (RAS -18UAX3-T2)

11-8. Outdoor Unit (RAS -18UA-E3, RAS-18UAX3)

11-9. Outdoor Unit (RAS -18UA-AR3)

FILE NO. SVM-03010(1)

TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND. – 87 –

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