Toshiba RAS-18S2AH-ES Service Manual Download Page 2

Page: 2 / 84

–

FILE NO. SVM-09036

CONTENTS

SPECIFICATIONS

CONSTRUCTION VIEWS

2-1 Indoor Unit
2-2 Outdoor Unit

WIRING DIAGRAM

SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-18SKP-ES, RAS-24SKP-ES)
4-2
4-3

Outdoor Unit (RAS-18SA-ES)

Outdoor Unit (RAS-24SA-ES)

REFRIGERATION CYCLE DIAGRAM

5-1
5-2

RAS-18SKP-ES / RAS-18SA-ES
RAS-24SKP-ES / RAS-24SA-ES

CONTROL BLOCK DIAGRAM

3-1 RAS-18SKP-ES / RAS-18SA-ES,

3-2 RAS-18SKHP-ES / RAS-18S2AH-ES

RAS-24SKP-ES / RAS-24SA-ES

RAS-24SKHP-ES / RAS-24S2AH-ES

4-4
4-5

Indoor Unit (RAS-18SKHP-ES, RASP-24SKHP-ES)

Outdoor Unit (RAS-18S2AH-ES)

4-6 Outdoor Unit (RAS-24S2AH-ES)

5-3
5-4

RAS-18SKHP-ES / RAS-18S2AH-ES
RAS-24SKHP-ES / RAS-24S2AH-ES

6-1 RAS-18SKP-ES / RAS-18SA-ES,

6-2 RAS-18SKHP-ES / RAS-18S2AH-ES

RAS-24SKP-ES / RAS-24SA-ES

RAS-24SKHP-ES / RAS-24S2AH-ES

Summary of Contents for RAS-18S2AH-ES

Page 1: ...February 2009 FILE NO SVM 09036 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS 18SKHP ES RAS 18S2AH ES RAS 24SKHP ES RAS 24S2AH ES RAS 18SKP ES RAS 18SA ES RAS 24SKP ES RAS 24SA ES ...

Page 2: ...AM 5 1 5 2 RAS 18SKP ES RAS 18SA ES RAS 24SKP ES RAS 24SA ES 6 CONTROL BLOCK DIAGRAM 3 1 RAS 18SKP ES RAS 18SA ES 3 2 RAS 18SKHP ES RAS 18S2AH ES RAS 24SKP ES RAS 24SA ES RAS 24SKHP ES RAS 24S2AH ES 4 4 4 5 Indoor Unit RAS 18SKHP ES RASP 24SKHP ES Outdoor Unit RAS 18S2AH ES 4 6 Outdoor Unit RAS 24S2AH ES 5 3 5 4 RAS 18SKHP ES RAS 18S2AH ES RAS 24SKHP ES RAS 24S2AH ES 6 1 RAS 18SKP ES RAS 18SA ES 6...

Page 3: ...ntrol 10 10 1 Indoor Unit 10 2 Outdoor Unit 11 EXPLODED VIEWS AND PARTS LIST 11 1 Indoor Unit E Parts Assy 11 2 Indoor Unit 11 3 11 4 Outdoor Unit RAS 18SA ES RAS 24SA ES Outdoor Unit RAS 18S2AH ES RAS 24S2AH ES 9 5 How To Diagnose Faulty Parts Troubleshooting for Indoor unit HOW TO REPLACE THE MAIN PARTS 7 OPERATION DESCRIPTION 7 2 Outline of Air Conditioner Control 7 3 Description of Operation C...

Page 4: ... Air filter OUTDOOR UNIT Dimensions Height mm Width mm Depth mm Net weight kg Condenser type Outdoor fan type Airflow volume m3 h Fan motor output W Compressor Model Output W Safety device Louver type Usable outdoor temperature range C 2600 PA200X2CS 4KU1 1500 15 43 RAS 18SKP ES RAS 24SKP ES 1000 880 20 2 25 2 8 10 56 57 1 65 15 1 98 2450 93 0 3 7 30 0 3 6 90 0 50 14 70 0 50 12 90 240V 220V 5 35 6...

Page 5: ...ype Outdoor fan type Airflow volume m3 h Fan motor output W Compressor Model Output W Safety device Louver type Usable outdoor temperature range C 15 43 10 24 15 43 10 24 PA200X2CS 4KU1 1500 2400 2550 2400 2550 2400 2550 RAS 18SKHP ES RAS 24SKHP ES 1000 1000 880 900 1100 1100 20 2 25 2 8 10 56 57 57 58 1 53 15 1 12 7 98 96 98 1 220 240 50 240V 220V 220V 240V 220V 240V 5 45 5 56 6 30 6 35 1470 Capa...

Page 6: ...m or less extra refrigerant 2 Need to charge Over 15 m up to 20 m 20 g m Over 15 m up to 25 m 20 g m extra refrigerant RAS 18SKP ES RAS 18SA ES Temperature Condition JIS C9612 Cooling Heating Indoor unit inlet air temperature DB 27 C 20 C WB 19 C 15 C Outdoor unit inlet air temperature DB 35 C 7 C WB 24 C 6 C RAS 18SKHP ES RAS 18S2AH ES RAS 24SKP ES RAS 24SA ES RAS 24SKHP ES RAS 24S2AH ES ...

Page 7: ... 5 40 262 5 215 235 215 235 320 40 109 47 215 5 153 5 85 23 6 5 200 525 278 200 222 150 6 Hanger 8 Hanger Hanger Center line 10 Installation plate outline For stud bold For stud bold Outline of indoor unit 786 72 78 50 50 78 72 Drain hose 0 5m 12 70 Connecting pipe 0 39m Connecting pipe 0 49m 6 35 Flare Hanger Flare Hanger 132 19 157 Wireless remote controller 56 Remote controller holder 26 125 63...

Page 8: ...e 50 36 R15 R5 5 Ø6 hole 28 320 86 A 125 108 600 or more Air out let 320 600 Air inlet 4xØ11 Long holes For Ø8 Ø10 anchor bolt Gas side Flare Ø 15 88 Liquid side Flare Ø 6 35 90 600 90 69 342 320 Z 50 36 R15 B Detail Drawing Front leg Ø 436 FAN GUARD 715 290 275 600 or more 84 129 5 4 Electrical part cover 320 306 100 or more 100 or more Installation dimension 2 2 Outdoor Unit ...

Page 9: ... 18SA ES RAS 24SKP ES RAS 24SA ES S V W T L N 3 1 2 RED RED RED RED BLK BLK CHASSIS GRY POWER SUPPLY 220 240 V 50 Hz SPARK KILLER MAGNETIC CONTACTOR BLK BLK RED A2 A1 52C R U COMPRESSOR WHI PNK BLK C S R CAPACITOR CAPACITOR WHI RED FAN MOTOR BLK OUTDOOR TERMINAL BLOCK UNIT ...

Page 10: ...LK BLK COIL FOR 4 WAY VALVE RED RED RED CAPACITOR CAPACITOR BLK BLK WHI RED CN01 CN05 GRY 1 3 5 7 9 1 3 5 7 9 BLK BLK RED RED 1 1 3 3 1 1 3 3 2 CN11 BLU YEL 1 3 1 3 1 1 3 CN02 BLU BLU 1 1 3 3 CN03 F01 250VAC T6 3A CR11 CR12 CR13 RY07 RY05 RY06 SG01 CN06 TNR R74 TNR R73 COMPRESSOR FAN MOTOR OUTDOOR TERMINAL BLOCK L N 3 1 2 S R C POWER SUPPLY 220 240V 50Hz i CHASSIS 3 2 RAS 18SKHP ES RAS 18S2AH ES R...

Page 11: ...tor R09 R10 SR561K14DL 560 V 11 Resistor R01 RF 5TK1R8 No 1 8Ω P 5W ar 1 ts name 2 T Lou ype v Specifications er motor MP24Z3T Output Rated 2 W 6 poles 1 2 phase DC 12 V 13 G5NB 1A CA Relay RY03 Coil DC 12V 16 7mA Contact AC 250V 1A No Parts name Type Specifications Output Rated 1500W 2poles 1 phase 220 240V 50Hz 1 Compressor PA200X2CS 4KU1 Winding resistance Ω Red Black White Black at 20 C 1 85 2...

Page 12: ...10 Varistor R09 R10 SR561K14DL 560 V 11 Resistor R01 RF 5TK1R8 1 8Ω 5W 12 Louver motor MP24Z3T Output Rated 2 W 6 poles 1 2 phase DC 12 V No Parts name Type Specifications Output Rated 2000W 2poles 1 phase 220 240V 50Hz 1 Compressor PA270X3CS 4MU2 Winding resistance Ω Red Black White Black at 20 C 1 37 2 55 Output Rated 42W 4poles 1 phase 220 240V 50Hz 2 Fan motor for outdoor FG 240 42A Winding re...

Page 13: ...rmer TT 05 220 240V 9 Microcomputer TMP47C840N No Parts name Type Specifications 10 Varistor R73 R74 15G471K 470V 11 Fuse F01 TSCR T6 3A 250V No Parts name Type Specifications Output Rated 2000W 2poles 1 phase 220 240V 50Hz 1 Compressor PA270X3CS 4MU2 Winding resistance Ω Red Black White Black at 20 C 1 37 2 55 Output Rated 42W 4poles 1 phase 220 240V 50Hz 2 Fan motor for outdoor FG 240 42A 1 Wind...

Page 14: ...Low temperature 0 75 4 3 Low 21 15 21 15 Fan speed indoor 50 Hz Standard pressure P MPaG Cross flow fan Compressor Propeller fan Outdoor unit PA200X2CS 4KU1 O D 12 7 mm O D 6 35 mm Packed valve 12 7 Packed valve 6 35 T P Refrigerant R410A 1 65 kg 0 39 m Connecting pipe 12 7 0 49 m Connecting pipe 6 35 Mark means check points of Gas Leak Capillary tube 2 0x1100 s Surface temp of heat exchanger inte...

Page 15: ...0 Low 21 15 21 15 Fan speed indoor 50 Hz Standard pressure P MPaG Heat exchanger Indoor unit Cross flow fan Cooling Propeller fan Outdoor unit PA270X3CS 4MU2 Cooling O D 12 7 mm O D 6 35 mm Cooling Gas container connection Reinstall etc Packed valve 6 35 Packed valve 12 7 0 39 m Connecting pipe 12 7 0 49 m Connecting pipe 6 35 T P Refrigerant R410A 1 70 kg Compressor Mark means check points of Gas...

Page 16: ...efrigerant R410A 1 53 kg Æ12 7 Æ6 35 Ambient temp conditions DB WB C Indoor Outdoor Standard 2 53 44 0 High 20 15 7 6 Heating Overload 1 3 30 3 65 51 0 55 0 Low 27 24 18 Low temperature 1 75 32 0 High 20 Standard 0 54 11 0 High 27 19 35 24 Cooling Overload 1 12 15 0 High 32 23 43 26 Low temperature 0 72 4 2 Low 21 15 21 15 Standard pressure P MPaG Surface temp of heat exchanger interchanging pipe ...

Page 17: ...frigerant R410A 1 62 kg Æ12 7 Æ6 35 Ambient temp conditions DB WB C Indoor Outdoor Standard 2 86 45 6 High 20 15 7 6 Heating Overload 1 3 54 3 91 53 6 57 6 Low 27 24 18 Low temperature 2 19 33 9 High 20 Standard 0 84 10 0 High 27 19 35 24 Cooling Overload 1 12 16 1 High 32 23 43 26 Low temperature 0 74 2 3 Low 21 15 21 15 Standard pressure P MPaG Surface temp of heat exchanger interchanging pipe T...

Page 18: ... Compressor Motor Revolution Control Processing Timer Louver ON OFF Signal Louver Driver Operation Display Timer Display Filter Sign Display Fan Only Sign Display Indoor Fan Motor Hi Power Sign Display Louver Motor Infrared Rays Remote Control Temperature Processing Operation Operation Remote Control Operation Mode Selection AUTO COOL DRY FAN ONLY Temperature Setting Fan Speed Selection ON TIMER S...

Page 19: ...Louver ON OFF Signal Louver Driver Serial Signal Transmitter Receiver Serial Signal Communication Operation Display Timer Display Filter Sign Display PRE DEF Sign Display Indoor Fan Motor Hi Power Sign Display Louver Motor Infrared Rays Remote Control Temperature Processing Operation Operation Remote Control Operation Mode Selection AUTO COOL DRY HEAT FAN ONLY Temperature Setting Fan Speed Selecti...

Page 20: ...utton CLR 20 12 Memory and Preset button PRESET One Touch button ONE TOUCH High power button Hi POWER Economy button ECO 21 Quiet button QUIET Comfort sleep button COMFORT SLEEP Filter reset button FILTER Clock Reset button CLOCK Check button CHK 1 2 9 7 1 Remote control 7 1 1 Function of Push Putton 18 17 16 15 14 13 20 19 13 PRESET ONE TOUCH QUIET SWING TIMER ON FILTER CHK CLOCK OFF CLR SLEEP SE...

Page 21: ...han 3 seconds while the mark is blinks Press another button to turn off the mark 8 ECO indicator Indicates when the ECO is in activated Press the ECO button to start and press it again to stop operation 9 A B change indicator remote controller When the remote controller switching function is set B appears in the remote controller display When the remote controller setting is A there is no indicati...

Page 22: ...erates the indoor fan motor based upon commands transmitted by the remote control and transfers the operation commands to the outdoor unit The outdoor unit receives operation commands from the indoor unit and operates the outdoor fan motor and the compressor 1 Role of indoor unit controller The indoor unit controller receives the operation commands from the remote control and executes them Tempera...

Page 23: ...et to AUTO the indoor fan motor operates as shown in Fig 7 3 3 When FAN button is set to LOW LOW MED MED or HIGH the motor operates with a constant air flow 1 2 3 3 2 5 2 1 5 1 0 5 0 5 0 M Preset temp C Room temp Preset temp 0 5 0 Preset temp ON ON OFF OFF OFF ON Compressor 4 way valve Outdoor fan OPERATION display lamp Room temp Preset temp Preset temp 24 C 2 2 5 3 C 1 5 1 0 5 0 M 1 2 3 Room temp...

Page 24: ... turning off the indoor fan motor operates in the SUPER LOW position The pattern of operation depending on the relation between room temperature and preset temperatures is shown in Fig 7 3 5 Fig 7 3 5 3 FAN button on the remote control is set to AUTO only 4 The ECO COMFORT SLEEP QUIET and Preset temp 3 2 1 0 OFF ON OFF 4 way valve Outdoor fan OPERATION Compressor ON 6min OFF 4min ON 5min OFF 5min ...

Page 25: ...No limitation while fan speed MANUAL mode is in stability A When Tsc 24 A is 24 and when Tsc 24 A is Tsc Tsc Set value Normal AUTO Line approximate H and SL with Tc Stop 46 Tc 34 45 33 33 21 32 20 A 0 A 0 A 8 A 8 Fan speed MANUAL or AUTO in starting Fan speed AUTO in stability Fan speed AUTO Fan speed MANUAL L H Up to setting speed Line approximate H and SL with Tc SL W2 Stop SL W2 Fig 7 3 8 Cold ...

Page 26: ...the specified temperature the outdoor unit starts the defrosting operation At this time the 4 way valve relay and the outdoor fan motor are turned off The indoor fan motor is also turned off by the cold draft preventing control of the indoor microcomputer Then PRE DEF lamp on the indoor unit comes on The defrosting operation stops and the 4 way valve relay outdoor fan motor and the indoor fan moto...

Page 27: ... the comfort mode and operates according to the signal received Operation description When an indoor unit receives One Touch Comfort Signal from the remote controller the indoor unit operates as following 1 Air conditioner starts to operation when the signal is received even if the air conditioner was OFF 2 Operation mode is set according to room temperature the same as AUTO mode 3 Target temperat...

Page 28: ... 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 indoor fan to work constantly at lower than speed L In addition noise level of indoor unit is less 1 Quiet mode is unable to work in dry mode 2 Quiet mode is appropriate...

Page 29: ...p mode has operated for 1 hour and the temperature will decrease another 1ºC after the comfort sleep mode has operated for 2 hour The value of the preset temperature on the remote control does not change The principles of comfort sleep mode are temperature reach setting temperature automatically The air condition can shut down by itself auto matically Quietness for more comfortable When room Save ...

Page 30: ...it on 7 11 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 is not set to work when shipped from the factory Therefore it is nece...

Page 31: ...me press RESET button once more or use the remote controller to turn it on 7 11 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 o...

Page 32: ...rmed prior to the reception of the stop code 3 After the Self Cleaning operation has been performed for the specified period the unit stops operation Unit now performing cooling or dry operation Press 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 The indoor fan operates conti...

Page 33: ...econds but it is not related to Self Cleaning function After holding about 20 seconds the air conditioner will beep 5 times and OPERATION display blinks 5 times The Self Cleaning function had been set Remark Presetting of Self Cleaning function above AUTO RESTART function had been cancelled To set AUTO RESTART again 7 12 1 Self Cleaning diagram How to cencel Self Cleaning function To cancel the Se...

Page 34: ...ght of the unit Personal injury and property damage can result if the unit falls Before doing the electrical work attach an approved plug to the power supply cord 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 uni...

Page 35: ...ER 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 ...

Page 36: ...Insert the cushion between the indoor unit and wall and tilt the indoor unit for better operation Do not allow the drain hose to get slack Make sure to run the drain hose sloped downward The auxiliary piping can be connected to the left rear left rear right right bottom right or bottom left Right Rear right Left Bottom right Rear left Bottom left Insulate the refrigerant pipes separately with insu...

Page 37: ... 5 m m Æ If it is necessary to drain the defrost water attach drain nipple 11 and cap water proof 10 to the bottom plate of the outdoor unit before installing it FILE NO SVM 09036 8 3 Installation 8 3 1 Optional installation parts Fixing bolt arrangement of outdoor unit Part Code A B C Q ty One each 1 One each Parts name Refrigerant piping Liquid side 6 35 mm Gas side 12 7 mm Pipe insulating mater...

Page 38: ...me Q ty Remote control holder x 1 Super Oxi Deo filter x 2 Part No 4 5 6 Part No Others Name Owner s manual Installation manual The part marked with asterisk is packaged with the outdoor unit Part name Q ty Mounting screw 4 x 25 x 6 Pan head wood screw 3 1 x 16 x 2 Drain nipple x 1 Cap water proof x 2 Screw 4 x 10 x 2 l 7 8 9 11 l Super Sterilizer filter x 2 l ...

Page 39: ...t diameter has been changed In order to increase pressure resisting strength hose materials and port size have been changed to 1 2 UNF 20 threads per inch When purchasing a charge hose be sure to confirm the port size As pressure is hight and gasification speed is fast it is difficult to read the indicated value by means of charging cylinder as air bubbles occur The size of opposite sides of flare...

Page 40: ...sturbances or noise interference The location of the remote controller should be determined as shown below 8 4 2 Drilling a Hole and Mounting Instal lation Plate Drilling a hole When install the refrigerant pipes from the rear 1 After determining the pipe hole position on the installation plate ð drill the pipe hole Ø65 mm at a slight downward slant to the outdoor side NOTE When drilling into a wa...

Page 41: ...hich discon nects all poles and has a contact separa tion of at least 3 mm must be incorporated in the fixed wiring An approved circuit breaker or switch must be used 2 Connection with power supply plug Attach power supply plug with power cord and plug it into wall outlet An approved power supply cord and plug must be used NOTE Perform wiring work being sure the wire length is long enough 8 4 4 Wi...

Page 42: ...nt panel slit Cut out the slit on the left or right side of the front panel for the left or right connection and the slit on the bottom left or side of thefront panel for the bottom left or right connection with a pair of nippers 2 Changing drain hose For left connection left bottom connection and rear left connection s piping it is necessary to relocate the drain hose and drain cap Fig 8 4 8 CAUT...

Page 43: ... the bending radius of each connection pipe Fig 8 4 15 NOTE If the pipe is incorrectly bent the indoor unit may be unstable on the wall After passing the connecting pipe through the pipe hole connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them To connect the pipe after installation of the unit figure Outer diameter Slit 43 mm Use a screwdriver handle etc To the ...

Page 44: ...rm that it is firmly hooked on the installation plate For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing the bottom up at the specified places Fig 8 4 18 Push Push Fig 8 4 17 50 mm or more Do not rise the drain hose Do not form the drain hose into the waved shape Do not put the drain hose end into water Do not put the drain hose end in the drain...

Page 45: ... coast A place full of sulfide gas A place where high frequency waves are likely to be generated as from audio equipment welders and medical equipment Fig 8 5 1 Strong wind Outer dia R410A of copper pipe 6 35 1 5 to 2 0 Outer dia R410A Conventional of copper pipe tool used tool used 6 35 0 to 0 5 1 0 to 1 5 8 5 2 Refrigerant piping connection 1 Cut the pipe with a pipe cutter Fig 8 5 2 2 Insert a ...

Page 46: ...nd Liquid 7 Remove the charging hose from the service port 8 Securely tighten the caps on the packed valves Tightening torque of flare pipe connections The operating pressure of R410A is higher than that of R22 Approx 1 6 times It is therefore necessary to firmly tighten the flare pipe connecting sections which connect the indoor and outdoor units up to the specified tightening torque Incorrect co...

Page 47: ...may cause some electrical parts burn out Be sure to comply with local codes on running the wire from indoor unit to outdoor unit size of wire and wiring method etc Every wire must be connected firmly NOTE Connecting cable Wire type More than 1 5 mm2 H07RN F or 245 IEC66 or 1 3 mm2 AWG 16 TO CHARGE REFRIGERANT Refrigerant No need to charge 15 m or less 15 m or less extra refrigerant Need to charge ...

Page 48: ...2 air conditioner are installed nearly the remote control signal simultaneously and operate In this Remote Control B Setup 1 Press RESET button on the indoor unit to turn the air conditioner ON 2 Point the remote control at the indoor unit 3 Push and hold CHK button on the Remote Control by the tip of the pencil 00 will be shown on the display 4 Press MODE during pushing CHK B will show on the dis...

Page 49: ...r is turned on 8 The operation mode changes in the Automatic operation 9 The Fan only operation continues in the Automatic operation 10 The ECO operation or Hi POWER operation does not work 11 When Hi POWER button is pressed the display on the remote control does not change at all No Operation of air conditioner Descriptions The OPERATION lamp blinks to indicate that power is turned on If the butt...

Page 50: ...Hz E OPERATION lamp is blinking 5 Hz F OPERATION and TIMER lamps are blinking 5 Hz G OPERATION TIMER and PRE DEF or FAN ONLY for cooling only model lamps are blinking Table 9 3 2 Diagnosis by detective operation The remote control does not work The outdoor fan does not rotate Turn off the power supply once then turn it on Try to operate the remote control The compressor operates The compressor doe...

Page 51: ...oor unit will beep once Beep and the display of the remote controller will change as follows The TIMER indicator of the indoor unit flashes continuously 5 times per 1 sec Check the unit with all 52 check codes to as shown in Table 11 4 1 Press ON or OFF button to change the check code backward If there is a fault the indoor unit will beep for 10 seconds Beep Beep Beep Note the check code on the di...

Page 52: ...he indoor unit blinks when error is defected The lamp on the indoor unit blinks when error is defected The lamp on the indoor unit blinks when error is defected And it returns to the normal condition when recovering from errors The lamp on the indoor unit blinks when error is defected The lamp on the indoor unit blinks when error is detected 1 Check the indoor thermo sensor TA 2 Check the indoor P...

Page 53: ...operly Connect connector properly Indoor P C board is defective Replace P C board Operation Check item Conceivable principle cause Measure Item by symptoms Does four way valve operate properly Does coil terminal have 220 240 V in heating operation Are circuit wires normal Is outdoor P C board normal Four way valve is defective Outdoor P C board is defective CN11 220 240 V Indoor P C board is defec...

Page 54: ...fective Indoor P C board is defective Is TC sensor resistance value 10 kΩ at 25 C normal Failure 09 Other cycle error 1 Heat pump model 09 Other cycle error 2 Clean filters Replace TC sensor Charge refrigerant Replacd P C board Anti freezing operation Anti freezing operation Does indoor fan operate Are filters clogged Is charged amount of refrigerant normal Is outside air low load Indoor P C board...

Page 55: ...ly Replace TA sensor Replace P C board NO NO YES YES Is CN01 TC sensor connector connected properly Is TC sensor resistance value 10 kΩ at 25 C normal Indoor P C board is defective Connect CN01 properly Replace TC sensor Replace P C board NO NO YES YES Is TE sensor connector connected properly Is TE sensor resistance value 10 kΩ at 25 C normal Indoor P C board is defective Connect connector proper...

Page 56: ...stance value 50 kΩ at 25 C normal Are wires connected to connector properly Outdoor P C board is defective Connect wires to connector properly Check and modify charged amount of refrigerant Unit operates normally Replace TD sensor Replace P C board NO NO YES YES Is TD sensor connected properly Is TD sensor resistance value 50 kΩ at 25 C normal Outdoor P C board is defective Connect connector prope...

Page 57: ... by pressing button on remote control Does transmission mark on remote control flash normally and is its signal transmitted properly Remote control is defective Refer to 9 9 Remote Control Part C01 C02 SG01 DB01 R09 R10 T01 and IC10 are defective Is fuse F01 of indoor control board blown Is voltage DC 12V or 5V indicated on rear of indoor control board normal Microconlroler defective Replace main ...

Page 58: ... 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 prevent a cold air from blowing in 9 6 2 Only indoor fan motor does not operate ...

Page 59: ...V between 2 and 3 on terminal block Are all of compressor cords normal Is compressor motor winding normal Check winding resistor Is capacitor for compressor normal Is overload relay normal Does compressor start Does compressor stop after a while Is gas quantity normal Check gas pressure Compressor is defective NO YES YES YES Replace P C board Gas shortage Gas leak Compressor is defective Microcomp...

Page 60: ... 59 Replace transformer FILE NO SVM 09036 AC 70 100V outdoor P C board CN06 of transformer Inspection procedure RAS 18 24SKHP ES ...

Page 61: ... compressor motor winding normal Check winding resistor Is gas quantity normal Check gas pressure Is capacitor for compressor normal Is overload relay normal Does compressor start Does compressor stop after a while Replace compressor Compressor is defective Compressor is defective NO Capacitor is defective NO Overload relay is defective NO Compressor is defective NO Gas shortage Gas leak FILE NO S...

Page 62: ...conds after star V ting the unit oltage varied between AC70 100V Abnormal condition Voltage does not vary 2 1 3 1 2 Terminal block on indoor side Terminal block Tester Red White RAS 18SKHP ES and RAS 24SKHP ES 9 7 2 Outdoor unit stops a while after starting the unit Confirmation procedure Select one of 3 cases below and follow the procedure 1 The outdoor unit stops between 10 and 20 minutes passed...

Page 63: ...n procedure No Procedure Check points Causes Impluse voltage was applied or the indoor fan motor short circuited 1 The terminal block or the crossover cable is connected wrongly 2 The capacitor C01 and C02 line filter L01 resistor R09 or the diode DB01 is defective 3 C27 T01 and IC01 are defective 4 IC10 C30 C11 or T01 are defective IC03 or IC04 are defectice The lamps are defective or the housing...

Page 64: ... of the indoor heat exchanger is extremely high 2 The connector of the heat exchanger sensor short circuited CN01 3 The heat exchanger sensor and the P C board are defective Refer to Table 9 8 2 4 The main P C board is defective 1 The indoor fan motor is defective Protected operation of P C board 2 The connection of the motor connector is loose 3 The P C board is defective 1 Check whether or not t...

Page 65: ...2 and 3 of terminal block for connecting cable Check whether or not all lamps OPERATION Auto restart TIMER FILTER and Hi power are indicated for 3 seconds and they return to normal 3 seconds later 5 Press 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 must lower than the room temper...

Page 66: ...rature 0 C 10 C 20 C 25 C 30 C Resistance value 33 8 20 35 12 59 10 00 7 99 kΩ 9 8 3 How to set cancel self cleaning function The self cleaning function is set from a factory To cancel this function should keep press the RESET button on Indoor unit for 20 seconds till can hear the long combination sound and repeat the same procedure when need to set PRESET ONE TOUCH QUIET SWING TIMER ON FILTER CHK...

Page 67: ...control is defective Does indoor unit start to operate by automatic restart function Does radio sound is affected by remote control when a signal is transmitted at distance of 5 cm from radio P C board is defective Keep indoor unit away from thyristor fluorescent light Avoid direct sunlight Replace P C board Replace batteries Normal operation Replace remote control The unit does not beep at all OP...

Page 68: ...s are not extinguished they may ignite any oil mixed with the refrigerant gas 2 Do not use welding equipment in an airtight room Carbon monoxide poisoning may result if the room is not properly ventilated 3 Do not bring welding equipment near flammable objects Flames from the equipment may cause the flammable objects to catch fire If keeping the power on is absolutely unavoidable while doing a job...

Page 69: ...ove the front panel fixing screws 4 pcs 6 Take off four hooks of panel from rear side How to assemble the front panel 1 Press three center positions and two lower center positions of the air outlet and then hang the hanging hooks 4 pcs at the top side of the front panel to the rear plate 2 Tighten four screws Incomplete hanging or incomplete pressing may cause a dewdrops 2 Screws Three hooks 4 Scr...

Page 70: ... loop the grounding wire and TC sensor leads once at the bottom 4 Disengage the display unit by simply pushing at the top of the display unit 5 Remove the fixing screw that secures the electric parts box assembly LED assembly and remove the assembly Electric part box cover TC sensor Earth Screw Fan motor connector Louver motor connector Fixing screw LED assembly Fixing screw 1 Remove screw of eart...

Page 71: ...e sliding the horizontal louver leftward Evaporator Heat exchanger 1 Follow to the procedure in the item 2 Remove the pipe holder from the rear side of the main unit 3 Remove two fixing screws at the left side of the end plate of the heat exchanger Remarks 4 Remove two fixing screw on the heat exchage fixing holder to separate the heat exchage from the back body Screw Screw 2 Screws ...

Page 72: ... 2 Remove the two screws used to secure the bearing base 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 it in the main body Remarks Two screws Bearing Bearing base Two screws Bearing Bearing base ...

Page 73: ... 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 Remarks 5 Pull the fan motor outward Set screw Two screws on motor band Two screws on motor cover ...

Page 74: ...s set keeping 5 mm from wall of rear plate of the main unit Holding the set screw install the cross flow fan so that U groove of the fan motor comes to the mounting hole of the set screw Perform positioning of the fan motor as follows When assembling the fan motor the fan motor must be installed in such a way that the fan motor leads will be taken out is positioned at the bottom front After assemb...

Page 75: ...and 1 ground screw on the electrical parts base No Part name Procedures Remarks Front cabinet Side cabinet 2 Remove the packed valve cover and the electrical parts cover 2 screws 4 x 10L 4 Remove the top cabinet 7 screws 4 x 10L Pulling out upward 5 Remove the top cabinet 2 screws 4 x 10L Pull the front right portion toward you and remove it pulling out upward Top cabinet Front cabinet 2 screws 4 ...

Page 76: ...edure 1 2 Remove the fixing screw 2 screws 4 x 18L 3 Disconnect the lead wires from the terminal 1 Perform the common procedure 1 2 Remove the fixing screw 1 screws 4 x 10L 3 Disconnect the lead wires from the terminal 2 Running capacitor for compressor 3 Running capacitor for fan motor 4 Magnetic contactor 5 Spark killer Procedures Remarks Part name No 75 FILE NO SVM 09036 Spark killer Running ca...

Page 77: ... x 18L 3 Disconnect the lead wires from the terminal 2 Running capacitor for compressor 3 Running capacitor for fan motor 4 Magnetic contactor 5 Procedures Remarks Part name No Running capacitor for compressor Running capacitor for fan motor Magnetic P C Board Transformer 1 Perform the common procedure 1 2 Remove the fixing screw 2 screws 4 x 10L 3 Disconnect the housing from the P C Board Transfo...

Page 78: ... For RAS 18SKP ES 403 43T50004 SENSOR HEAT EXCHANGER 411 43T69821 PC BOARD For RAS 24SKP ES 404 43T69005 SENSOR THERMOSTAT 411 43T69822 PC BOARD For RAS 24SKHP ES 405 43T69736 PC BOARD ASSY WRS LED 414 43T69747 ASM STEPPING MOTOR 407 43T62003 CORD CLAMP 415 43T60386 MOTOR CORD 411 43T69816 PC BOARD For RAS 18SKHP ES Description Description 402 405 403 404 414 407 411 415 ...

Page 79: ...43T03374 BACK BODY ASSY 216 43T19333 HOLDER SENSOR For RAS 18 24SKP ES 217 43T49010 PIPE SHIELD 203 43T03377 BACK BODY ASSY 218 43T82008 PLATE INSTALLATION For RAS 18 24SKHP ES 219 43T49043 HOLDER PIPE 204 43T80019 AIR FILTER 220 43T62031 COVER TERMINAL 205 43T09040 LOUVER HORIZONTAL 221 43T69615 WIRELESS REMOTE CONTROL 206 43T70313 HOSE DRAIN For RAS 18 24SKHP ES 207 43T79313 CAP DRAIN 221 43T696...

Page 80: ... 79 11 3 Outdoor Unit RAS 18SA ES RAS 24SA ES FILE NO SVM 09036 ...

Page 81: ...CONDENSER ASSEMBLY 29 43T52309 SWITCH MAGNET CLK 35J S649 For RAS 24SA ES For RAS 24SA ES 8 43T00448 FIXING PLATE VALVE 30 43T55352 MF CAPACITOR For RAS 18SA ES 9 43T46332 VALVE PACKED 6 35 DIA 30 43T55354 MF CAPACITOR For RAS 24SA ES 10 43T46335 VALVE PACKED 12 7 DIA H4 31 43T55321 CAPACITOR PLASTIC FILM 11 43T47331 BONNET 6 35 DIA For RAS 24SA ES 12 43T47333 BONNET 12 70 DIA 31 43T55341 CAPACITO...

Page 82: ... 79 11 4 Outdoor Unit RAS 18S2AH ES RAS 24S2AH ES FILE NO SVM 09036 ...

Page 83: ...0 DIA 13 43T47013 CAPILLARY TUBE 2 0 DIA 14 43T00468 FRONT CABINET 15 43T00474 LEFT CABINET 16 43T00454 RIGHT CABINET 17 43T21378 FAN MOTOR AC220 240V 50Hz 18 43T20319 PROPELLER FAN 19 43T47001 NUT FLANGE 20 43T19329 FAN GUARD 21 43T04302 PARTITION 22 43T39333 MOTOR BASE CONNECTION PLATE 23 43T39318 MOTOR BASE 24 43T19330 PACKED VALVE COVER 25 43T00521 UPPER CABINET ASSEMBLY 31 43T55341 CAPACITOR ...

Page 84: ... 87 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 ...

Search results

Summary of Contents for RAS-18S2AH-ES

Reviews:

Toshiba RAS-18S2AH-ES, Service Manual, Page: 2 / 84

Search results

Summary of Contents for RAS-18S2AH-ES

Reviews: