Toshiba RAS-10SKV-E manual

FILE NO. SVM-07008-1 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE Revised May, 2007 RAS-10SKV-E / RAS-10SAV-E RAS-10SKV-A / RAS-10SAV-A[...]

CONTENTS 1 . SAFETY PREC A UTIONS .......................................................................... 2 2 . SPECIFIC A TIONS ..................................................................................... 4 3 . REFRIGERANT R410A ............................................................................. 6 4 . CONST R UCTION VIEWS ...[...]

– 2 – 1. SAFETY PRECA UTIONS For general public use P o w er supply cord of outdoor unit shall be more than 1.5 mm 2 (H07RN-F or 60245 IEC66) polychloroprene sheathed fle xib le cord. • Read this “SAFETY PRECA UTIONS” carefully bef ore ser vicing. • The precautions described below include the impor tant items regarding safety . Obser v [...]

• DO NO T INST ALL NEAR CONCENTRA TIONS OF COMBUSTIBLE GAS OR GAS V APORS. F AILURE T O FOLLOW THIS INSTR UCTION CAN RESUL T IN FIRE OR EXPLOSION. • T O PREVENT THE INDOOR UNIT FROM O VERHEA TING AND CA USING A FIRE HAZARD , PLACE THE UNIT WELL A W A Y (MORE THAN 2 M) FROM HEA T SOURCES SUCH AS RADIA T ORS, HEA T REGIST ORS, FURNA CE, ST O VES,[...]

– 4 – 2 . SPECIFICA TIONS 2 -1. Specifications Unit model Indoor RA S-10SKV-E, RA S-10SKV-A Outdoor RA S-10SA V- E, RA S-10SAV- A Cooli ng capacity (kW ) 2.5 Cooli ng capacity r ange (kW) 1.1 - 3. 0 Heati ng capacity (kW ) 3.2 Heati ng capacity range (kW) 0.9 - 4. 1 Power suppl y 1Ph/50Hz/ 220-240V Elect r ic Indoor Operati on mode Coolin g Hea[...]

2 -2. Operation Characteristic Curve – 5 – FILE NO. SVM-07008 <Cooling > <Heating > 2 - 3. C a p a city V a ri a ti o n R a tio A cc o r d i n g to Te m p er a t u r e <Cooling > <Heating > 0 1 2 3 4 5 6 0 10 20 30 40 50 60 70 80 90 100 110 120 Compress or Speed ( rps) Current ( A) 0 1 2 3 4 5 6 0 10 20 30 40 50 60 70 80[...]

– 6 – 3. REFRIGERANT R410A This air conditioner adopts the ne w refrigerant HFC (R410A) which does not damage the ozone la yer . The working pressure of the new refrigerant R410A is 1.6 times higher than con v entional refr igerant (R22). The refr igerating oil is also changed in accordance with change of refrigerant, so be careful that water ,[...]

– 7 – T able 3-2-1 Thicknesses of annealed copper pipes Nominal diameter 1/4 3/8 1/2 5/8 Outer diameter (mm) 6.35 9.52 12.70 15.88 Thickness (mm) R410A R22 0.80 0.80 0.80 0.80 0.80 0.80 1.00 1.00 2. Joints F or copper pipes, flare joints or sock et joints are used. Pr ior to use, be sure to remov e all contaminants. a) Flare Joints Flare joints[...]

– 8 – A ØD d) Flare Processing Make certain that a clamp bar and copper pipe ha v e been cleaned. By means of the clamp bar , perf orm the flare processing correctly . Use either a flare tool f or R410A or con v en- tional flare tool. Flare processing dimensions diff er according to the type of flare tool. When using a con- ventional flare too[...]

– 9 – 43˚ to 45˚ 45˚ to 46˚ B A C D T able 3-2-6 Flare and flare nut dimensions for R22 Nominal diameter 1/4 3/8 1/2 5/8 3/4 Outer diameter (mm) 6.35 9.52 12.70 15.88 19.05 Thic kness (mm) 0.8 0.8 0.8 1.0 1.0 Dimension (mm) ABCD 9.0 9.2 6.5 13 13.0 13.5 9.7 20 16.2 16.0 12.9 20 19.7 19.0 16.0 23 23.3 24.0 19.2 34 Flare nut width (mm) 17 22 [...]

– 1 0 – 3-3. T ools 3-3-1. Required T ools The ser vice por t diameter of pack ed v alve of the outdoor unit in the air-w ater heat pump using R410A is changed to pre v ent mixing of other refrigerant. T o reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (F or Ø 12.7 copper pipe) o[...]

– 1 1 – Connect the charge hose to pack ed v alve service por t at the outdoor unit ’ s gas side. Recov er the refrigerant, and check no refrigerant remains in the equipment. (F or refrigerant charging, see the figure below .) Connect the charge hose to the vacuum pump adapter . Open fully both pack ed v alves at liquid and gas sides. Place t[...]

– 1 2 – Gauge manifold [ Cylinder with siphon ] [ Cylinder without siphon ] OUTDOOR unit Gauge manifold OUTDOOR unit Refrigerant cylinder Electronic balance Refrigerant cylinder Electronic balance Siphon 1. Be sure to mak e setting so that liquid can be charged. 2. When using a cylinder equipped with a siphon, liquid can be charged without tur [...]

– 1 3 – Nitrogen gas cylinder Pipe Flow meter M Stop valv e F rom Nitrogen cylinder Nitrogen gas Rubber plug 2. Characteristics required for flux • Activated temper ature of flux coincides with the brazing temperature . • Due to a wide eff ective temperature range , flux is hard to carbonize . • It is easy to remov e slag after brazing. ?[...]

– 14 – 4 . CONST R UCTION VIEWS 4 -1. Indoor Unit 38 45 250 235 135 90 40 165 45 135 90 26 290 Knock out system 58 8 52 195 Front panel Knock out system 8 60 Air inlet Air filter Heat exchanger Air outlet 740 250 60 55 50 50 55 60 Hanger Center line Hanger 8~ Hanger Installation plate outline 10) For stud bold ( For stud bold ( 6) 145 145 215 2[...]

FILE NO. SVM-07008 − 1 5 − 4-2. Outdoor Unit C L C L[...]

– 16 – FILE NO. SVM-0 7008 5 . WIRING DI A GRAM 5 -1. Indoor Unit[...]

FILE NO. SVM-07008 – 17 – 5-2. Outdoor Unit[...]

– 18 – FILE NO. SVM-07008 6 . SPECIFIC A TION OF ELECTRICAL P A R TS 6 -1. Indoor Unit No. P arts name T ype Specifications 1 F an motor ( f or indoor) AFS-220-20-4AR AC Motor with 145 °C thermo fuse 2 The r m o . sensor ( T A-sensor) 10 k Ω at 25 ° C 3 Micro power module (T101) µ RM1260V 4 Microcontroller unit (IC81) 5 Heat e xchanger sen[...]

FILE NO. SVM-07008 – 19 – 6-2. Outdoor Unit (RAS-10SAV-E, RAS-10SAV-A) No . P ar ts name Model name Rating 1 SC coil L01 GET-0451 0.6mH, 15A (Noise filter) L03 GET-0452 2.0 mH, 10A P r ima r y side DC280 V , Seconda r y 2 DC-DC t r ans f o r mer SW T -72 side 7.0 V x 1, 1 2 V x 1, 17V x 2 3 Reactor CH-5 1 -Z-T L=1 9 mH, 1 0 A 4 Outside f an mot[...]

– 20 – 7. REFRIGERANT CYCLE DIA GRAM 7-1. Refrigerant Cyc le Diagram RAS-10SKV-E / RAS-10SAV-E NO TE : • The maxi m um pipe length of this air conditioner is 10 m . The addition charging of refrigevant is Deo xidized copper pipe Outer dia. : 9.52mm Thickness : 0.8mm NO TE : Gas leak check position Refrigerant flow (Cooling) Refrigerant flow ([...]

– 2 1 – 7-2. Operation Data <Cooling> Model name Standard I ndoor Outdoor Compressor RA S- pressure fan mode fan mode revolut ion Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps) 27/19 35/- 10SKV - E 1 0 SKV - A condition(°C) Tempeat ure Heat exchanger pipe temp. Model name Standard I ndoor Outdoor Compressor RA S- pressure fan mode fan mo[...]

– 22 – FILE NO. SVM-07008 REMO TE CONTR OL Remote Control Operation ( ) Operation Mode Selection AUTO, COOL, DRY, HEAT, FAN ONLY Temperature Setting Fan Speed Selection ON TIMER Setting OFF TIMER Setting Louver Auto Swing Louver Direction Setting ECO Hi power Filter Reset Infrared Rays 8 . CONT R OL BLOCK DI A GRAM 8 -1. Indoor Unit • Louver [...]

– 23 – FILE NO. SVM-07008 8 -2. Outdoor Unit (I n ve r ter Assem b l y) For INDOOR UNIT 1 230V 50Hz signal Noise filter Input current sensor Conv er ter (A C DC) P .C.B (MCC 5009) Ov er current sensor Gate drive circuit Rotor position detect circuit Rela y Fa n motor 4wa y V alve Rela y High pow er factor correction circuit 1. PWM synthesis fun[...]

− 24 −  9. OPER A TION DESCRIPTION 9-1. Outline of Air Conditioner Control This air conditioner is a capacity- v a r ia b le type air conditione r , which uses AC motor both the indoor fan motor and the outdoor f an moto r . And the capacity- propor tional control compressor which can change the motor speed in the r ange from 22 to 83 r ps i[...]

– 25 − 9-2. Operation Description 1 . Basic ope r ation ........................................................................................................... 26 1. Ope r ation control ................................................................................................... 26 2 . Cooling/Heating ope r ation .....................[...]

– 26 – Item 1. Basic ope r ation Operation flow and applicable data, etc. 1. Operation contr ol Description 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 sho wn in the below . 2) A signal is sent by ON b utt[...]

 − 27 − Ope r ation ON Setup of remote controller Indoor fan motor control / Louver control / Operation Hz Control (Requierment) Indoor unit control Sending of operation command signal Outdoor unit control [ ] Compressor r evolution control / Outdoor fan motor control / 4- w a y v al v e control In cooling ope r ation: ON In heating operatio[...]

– 28 – Item 2. Indoor f a n motor control Operation flow and applicable data, etc. <In cooling operation> (This operation controls the f an speed at indoor unit side.) The indoor f an (cross flow f an) is operated by the phase- control induction motor . The f an rotates in 5 stages in MANU AL mode, and in 5 stages in A UT O mode, respec- [...]

– 29 – Item 2. Indoor f a n motor control Operation flow and applicable data, etc. <In heating operation> Description 1) When setting the f an speed to L, L+, M, M+ or H on the remote controller , the operation is per- f or med with the constant speed shown in Fig. 3 and T able 1. 2) When setting the f an speed to A UT O on the remote con[...]

– 30 – Item 3. Capacity control Operation flow and applicable data, etc. The cooling or heating capacity depending on the load is adjusted. According to diff erence between the setup value of temper a- ture and the room temperature, the capacity is adjusted b y the compressor re volution. Description 1) The difference between set temperature on[...]

– 31 – Item 5. Release protective control by tempera- ture of indoor heat exchanger Operation flow and applicable data, etc. <In cooling/dry operation> (Pre vent-freezing control f or indoor heat exchanger) In cooling/dr y operation, the sensor of indoor heat e xchanger detects e v aporation temperature and controls the compressor speed s[...]

– 32 – Item Operation flow and applicable data, etc. Description 6. Defrost control (Only in heating operation) (This function remov es frost adhered to the outdoor heat e xchanger .) The temperature sensor of the outdoor heat e x- changer (T e sensor) judges the frosting status of the outdoor heat e xchanger and the defrost operation is perf o[...]

Horizontal blowing Inclined blowing Blowing downward Air direction Inclined blowing Horizontal blowing Initial setting of "Cooling storage position" Louver : Directs downward ( 48 ° ) Heating operation/ AUTO (HEAT) Initial setting of “ Heating storage position ” Louver : Directs downward ( 115.7 ˚ ) Item 7. Lou v er control 1) Louve[...]

– 34 – Item 8. EC O ope r ation Operation flow and applicable data, etc. When pressing [ECO] b utton on the remote controlle r , a Economic ope r ation is pe r f o r med . <Cooling operation> This function operates the air conditioner with the diff erence between the set and the room temperature as sho wn in the f ollowing figure . Descri[...]

– 35 – Item 9. Temporary operation Operation flow and applicable data, etc. Pressing [RESET] button starts the temporar y opera- tion of [A UT O] operation. When keeping [RESET] button pressed f or 10 seconds or more, the temporary [COOL] operation is perf or med. Description 1) When pressing [RESET] b utton, the temporary [A UT O] operation st[...]

– 36 – Item 11. Self-Cleaning Operation flow and applicable data, etc. 1. Purpose The Self-Cleaning operation is to minimize the growth of mold, bacteria etc. by running the f an and dr ying so as to keep the inside of the air conditioner clean. Self-Cleaning operation When the cooling or dry operation shuts down, the unit automatically starts [...]

Item 11. Self-Cleaning function Operation flow and applicable data, etc. • Self-Cleaning diagram Description 12. Self-Cleaning function release Operation displa y ON OFF OFF FCU f an ON ON OFF r pm is depend on presetting. (500RPM) FCU lou v er OPEN OPEN (12.7º) CLOSE Timer display ON or OFF ON ON or OFF depend on presetting of timer function. d[...]

Item 13. Romote-A or B selection Operation flow and applicable data, etc. Description 1. Purpose This operation is to operate only one indoor unit using one remote controller . 2. Description When operating one indoor unit in a situation where two indoor units ha ve been installed in the same room or nearby rooms , this operation pre vents the remo[...]

Item 14. QUIET mode Operation flow and applicable data, etc. Description Wh e n the [QUIET] button is press e d, the fan of the indoor unit will be restricted the revolving speed at − until the [QUIET] button is p r e s sed o nce Re m a r ks : 1. Quiet mo d e is un a ble to work in dry m o de. 2. Quiet mo d e is ap p r o priate to work with l e s[...]

Item Operation flow and applicable data, etc. Description 17. Hi-POWER ([Hi-POWER] button on the remote controller is pressed) When [Hi-POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi- . Mode POWER mark is indicated on the display of the remote controller and the unit operates as follows. 1. Automatic ope[...]

– 41 – Operation Press [RESET] b utton f or more than three seconds. (Less than 10 seconds) Motions The unit is on standb y . ↓ The unit star ts to operate. The green indicator is on. ↓ After appro x. three seconds, The unit beeps three times The green indicator flashes and continues to operate . for 5 seconds. If the unit is not required t[...]

– 42 – Operation Press [RESET] b utton f or more than three seconds. (Less than 10 seconds) Motions The unit is on standb y . ↓ The unit star ts to operate. The green indicator is on. ↓ After appro x. three seconds, The unit beeps three times and continues to operate . If the unit is not required to operate at this time , press [RESET] b ut[...]

1 1 1 1 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 butto n (ON) Off timer button (OFF) Sleep timer button (SLEEP) Setup button (SET) Clear button (CLR) Memory and Preset button (PRESET) One Touch button (ONE-TOUCH) H[...]

– 44 – 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. Hi-POWER OPERATION To automatically control room temperature and airflow for faster cooling or heating Press HI-POWER : Start and stop the operation[...]

− 45 − 9. PRESET OPERATION Set your preferred operation for future use. The setting will be memorized by the unit for future operation (except air flow direction). 1. Select your preferred operation. 2. Press and hold PRESET for 3 seconds to memorize the setting. The mark P displays. 3. Press PRESET : Operate the preset operation. 10. AUTO REST[...]

– 46 – 9- 4 - 3 . Name and Functions of Indications on Remote Cont r oller [Displa y] All indications, e xcept for the cloc k time indicator , are display ed by pressing the button. 1. T ransmission mark This transmission mark indicates when the remote controller transmits signals to the indoor unit. 2. Mode indicator Indicates the current oper[...]

− 47 − FILE NO. SVM-07008 10-1-1. Installation Diagram of Indoor and Outdoor Units Shield pipe A ir f ilt e r Hook Hook ( A t t a c h t o t h e f r o n t p a n e l.) 65 mm or more 170 m m or m ore 1 Installation plate 170 mm or more 2 Wireless remote 5 Super Oxi 6 Super Sterilizer 3 Batteries 4 Remote control holder 8 Pan head wood screw The au[...]

– 48 − FILE NO. SVM-07008 10 -1-2. Optional installation pa r ts <Fixing bolt arrangement of outdoor unit> Fig. 9-1-2  Secure the outdoor unit with the fixing bolts and nuts if the unit is likely to be e xposed to a strong wind.  Use  8 mm or  10 mm anchor bolts and nuts. P ar ts name Refrigerant piping Liquid side : ∅ 6.35 [...]

– 49 – FILE NO. SVM-07008 Pa r t No. 1 2 3 P art name (Q ’ ty) Installation plate x 1 Wireless remote control x 1 Battery x 2 P art name (Q ’ ty) Remote control holder x 1 Super Oxi Deo filter x 1 Super Sterilizer filter x 1 Pa r t No. 4 5 6 Pa r t No. 7 8 9 Others Name Owner’ s manual Installation manual P art name (Q ’ ty) Mounting sc[...]

– 50 – FILE NO. SVM-07008 • Incidentally , the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the U . S’ s ARI specified rose color (ARI color code: PMS 507). • Also , the “charge por t and packing f or refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to the ch[...]

– 51 – FILE NO. SVM-07008-1 10 -2. Indoor Unit 10 -2-1 . Installation place • A place which provides the spaces around the indoor unit as shown in the abov e 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 allows the f[...]

– 52 – FILE NO. SVM-07008 <When the installation plate is directl y mounted on the wall> 1. Securely fit the installation plate onto the wall b y screwing it in the upper and lo wer par ts to hook up the indoor unit. 2. T o mount the installation plate on a concrete wall with anchor bolts, utiliz e the anchor bolt holes as illustrated in [...]

– 53 – FILE NO. SVM-07008 10 -2-4 . Wiring connection <How to connect the connecting cable> Wiring of the connecting cable can be carried out without removing of the fr ont panel. 1. Remov e the air inlet grille. Open the air inlet grille upward and pull it tow ard you. 2. Remov e the ter minal cov er and cord clamp. 3. Inser t the connec[...]

– 54 – FILE NO. SVM-07008 <How to fix the Drains Cap> 1) Inser t hexagonal wrench ( ∅ 4 mm) in a center head. Fig. 10 -2-11 2) Firmly inser t drains cap . Fig. 10 -2-12 CA UTION Fir mly inser t the drain hose and drain cap; otherwise, w ater may leak. <In case of right or left piping> • After scribing slits of the front panel wi[...]

– 55 – FILE NO. SVM-07008 10 -3-2. Refrigerant piping connection <Flaring> 1. Cut the pipe with a pipe cutter . Fig. 10 -3-2 2. Inser t a flare nut into the pipe, and flare the pipe.  Projection mar gin in flaring : A (Unit : mm) Fig. 10 -3-3 ial (wing nut type) <Tightening connection> Align the centers of the connecting pipes an[...]

– 56 – FILE NO. SVM-07008-1 10 -3-3. E v acuating After the piping has been connected to the indoor unit, you can perf or m the air purge together at once. AIR PURGE Ev acuate the air in the connecting pipes and in the indoor unit using a vacuum pump . Do not use the refrigerant in the outdoor unit. F or details, see the manual of the v acuum p[...]

– 57 – FILE NO. SVM-07008 <Stripping length of connection cable> CA UTION • Wrong wiring connection may cause some electrical par ts 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). • Ev er y wire must be connected fir mly . • This installatio[...]

– 58 – FILE NO. SVM-07008 10 -3-5. Gas leak test Fig. 10 -3-10 • Check the flare nut connections f or the gas leak with a gas leak detector or soap water . Check places for outdoor unit V alve cover Check places for indoor unit (Flare nut connection) Electric parts cover 10 - 3 - 6 . Indoor unit fixing 1. P ass the pipe through the hole in th[...]

– 59 – FILE NO. SVM-07008 Inverter cover P . C. board (Soldered surface) Discharging position (Discharging period 10 seconds or more) Plug of soldering iron 1 1 . H O W T O DI A GNOSE THE T R OUBLE The pulse modulating circuits are mounted to both indoor and outdoor units. Theref ore, diagnose troub les according to the diagnosis procedure as d[...]

– 60 – FILE NO. SVM-07008 1 1 -1-3. Operation whi c h is not a t r ou b le (P r ogram operation) For controlling the air conditioner , the program operations are b uilt in the microcomputer as described in the f ollowing tab le. If a claim is made for running operation, check whether or not it meets to the contents in the f ollowing tab le. Whe[...]

– 61 – FILE NO. SVM-07008 1 1 -3. J udgment b y Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner , if the protective circuit oper ates, the contents of self-diagnosis are displa yed with b lock on the indoor unit indication section. NO TES: (1) The contents of items B and C and a par t of it[...]

– 62 – 11 -4. Self-Di a gnosis b y Remote Cont r oller (Che c k Code) 1. If the lamps are indicated as shown B to E in T ab le 11-3-1, e x ecute the self-diagnosis b y the remote controller . 2. When the remote controller is set to the ser vice mode, the indoor controller diagnoses the oper ation condi- tion and indicates the inf or mation of t[...]

– 63 – FILE NO. SVM-07008 1 1 -4-2. Caution at se r vicing (1) After se r vicing, push the [ ] b utton to retu r n to the no r mal mod e . (2) After ser vicing by the chec k code, turn off breaker of the po wer supply , and tur n on breaker of the pow er supply again so that memor y in the microcomputer returns the initial status. Howe ver , th[...]

– 64 – FILE NO. SVM-7008 Block distinction Operation of dia gnosis function Judgment and action Check Bloc k Check Cause of operation Air conditioner Remarks code code status Inv er ter ov er-current protective circuit operates . (Shor t time) P osition-detect circuit error or shor t-circuit between windings of compressor Current-detect circuit[...]

– 65 – Operation Measure Item by symptoms Check item Conceivab le principle cause Pa r t s ( D01 ~ D04 , C03, T101 and IC12 are de f ecti v e . • Be sure to disconnect the motor connector CN10 after shut off the po wer supply , or it will be a cause of damage of the motor . (1) Power is not turned on (Does not operate entirely) 3 FILE NO. SVM[...]

(2) P o wer is not turned on though Indoor P .C. boar d is replaced <Confirmation procedure> YES YES NO NO To item of “ Power is not turned on ” . Turn on power supply. Does operation lamp flash? Is wired correctly to white and black lead wires of terminal board? Correct wiring. – 66 – FILE NO. SVM-0 7008[...]

FILE NO. SVM-07008 – 67 – ( 3) On l y the indoor fan does not operate . Replace the fan motor. YES NO NO YES YES NO NO YES YES YES NO NO NO YES Does the fan stop in no operating status? Control P.C. board is defective. Start the operation with low fan setting in cool operation. Does AC 120 V or higher voltage apply to between red and black lead[...]

<Cause> The IC is b uilt in the indoor f an moto r . T here f ore the P . C . board is also mounted to the inside of the moto r . If the P . C . board is soldered imperfectly or the IC is de f ecti v e , the f an motor m a y automatically rotate b y turning on p o wer supply. <Confirmation pr ocedure> (1) Rem o v e the front panel. (2) [...]

– 69 – FILE NO. SVM-07008 Press [ ] button. Is transmission mark indicated? Press RESET button on remote control with tip of pencil. Is receiver on indoor unit exposed to direct sunlight? Is there any thyristor fluorescent light nearly ? Does indoor unit operate when moving remote control near receiver or indoor unit? Press [ ] button. Batterie[...]

– 70 – FILE NO. SVM-07008 Measure gas pressure. Gas shortage Pipe clogging Thermo operation of compressor Gas circulation amount is down. Gas leak 1 1 -5-2. Wiring F ailure (Inte r connecting and serial signal wire) (1) Outdoor unit does not operate. 1) Is the voltage between indoor terminal bloc k 2 and 3 varied? Confirm that transmission from[...]

– 71 – FILE NO. SVM-07008 1 1 -6. Che c k Code 1C (Mi s wiring in indoor/outdoor units) and 1E <Check pr ocedure> NO NO NO NO YES YES YES YES YES Gas leakage, disconnection of TS/TC sensors (Check code 02, 1C) Discharge temp. error , gas leakage (Check code 03, 1E) 1C 1E Gas amount check and valve clogging check Remove TC sensor connector[...]

– 72 – FILE NO. SVM-07008 1 1 -7. H o w to Diagnose T r ou b le in Outdoor Unit 1 1 -7-1. Summari z ed inner di a gnosis of i n ve r ter assemb l y Diagnosis/Pr ocess flowchart Item Contents Summary Preparation Chec k Chec k Operation Measurement Chec k Stop Chec k Measurement If fuse was b lown, be sure to check the electrolytic capacitor and [...]

– 73 – FILE NO. SVM-07008 Check Operation → OK if 10M Ω or more → OK if 0.51 Ω → 0.57 Ω (Check b y a digital tester.) a) One or two of three v oltages should be 5 V , and others should be 0V . (When all are 0V or 5 V , it is not accepted.) b) When rotating the fan slowly with hands , the voltage betw een pins should mov e from 0V to[...]

FILE NO. SVM-07008 (3) Checking procedure. Table 11-6-1 No. 1 2 3 4 5 6 Procedure 1. Application of shock v oltage. Overload by short-circuit of the par ts. 1. AC po wer cord is defective . P oor contact of the ter minal plate. 2 . Capacitor ( C121 ) is de f ecti v e . Line filter (L01) is def ective . Capacitor ( C03 ) is defective. Diode ( D01,D0[...]

– 75 – 100 30 40 50 60 70 80 90 20 10 0 01 0 2 0 3 0 4 0 5 0 Resistance value (k ) Temperature ( ˚ C) TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TO : Outdoor temp. sensor TE : Outdoor heat exchanger temp. sensor. TA, TC, TO, TE TD <Sensor characteristic tab le> FILE NO. SVM-07008[...]

– 76 – FILE NO. SVM-07008 1 Room temp . (T A) sensor Heat exchanger (TC) sensor 2 Remote control 3 Louver motor 24BYJ48 4 Indoor f an motor Disconnect the connector and measure the resistance value with tester . (Nor mal temp .) T o item of How to judge whether remote control is good or bad of the Judgment of trouble b y symptom. Measure the re[...]

– 77 – FILE NO. SVM-07008 1 Electrolytic capacitor 1. T ur n OFF the power supply break er . (For r aising pressure, smoothing) 2. Discharge all three capacitors completely . 3 . Check that saf ety valv e at the bottom of capacitor is not broken. 4 . Check that v essel is not swollen or e xploded. 5 . Check that electrolytic liquid does not b l[...]

– 78 – FILE NO. SVM-7008 If the resistance value between 1 (Red lead) − 2 (White lead) 2 (White lead) − 3 (Black lead) 3 (Black lead) − 1 (Red lead) of the connector (CN300 : Motor winding) is 17 to 25 Ω , it is normal. Turn OFF the breaker. Fan motor is normal. Does the fan rotate without trouble when rotating it with hands? Disconnect[...]

− 79 − H o w to rem o v e the front panel 1) Stop the ope r ation of the air conditioner and tu r n off its main p o wer suppl y . 2) Pull the air inlet g r ille t o w ard y ou to open it and rem o v e the air inlet g r ill e . Then rem o v e the 2 scr e ws fixing the front panel. 3) First open the ho r i z ontal lou v e r , and then rem o v[...]

− 80 − 1) Rem o v e the front panel, electrical pa r t and the ho r i z ontal lou v er f oll o wing procedure 3 . 2) Rem o v e the pipe holder at the rear side of main unit. 3) Rem o v e the 2 scr e ws on the heat e xchanger at the base bea r ing. 4) Rem o v e the scr e w on the heat e xchanger at the fixed plate from the back body and then pul[...]

FILE NO. SVM-07008 – 81 – 1) T ur n the power supply off to stop the oper ation of air conditioner . 2) Remov e the front panel. • Remov e the 4 fixing scre ws . 3) Remov e the electrical par t base. 1 Common procedure 1 2 -2. Mic r ocomputer Replace the ther mal fuse, terminal bloc k, microcomputer ass’y and the P .C. board ass’y < P [...]

FILE NO. SVM-07008 – 82 – < P .C. boa r d l a y out> Solder side[...]

FILE NO. SVM-07008 – 83 – 1 2 -3 -1 . Outdoor Unit No. P art name Procedures Remarks 1. Detachment 1) Stop operation of the air conditioner , and tur n off the main s witch and breaker of the air conditioner . 2) Remov e the v alve co ver . (ST1T ∅ 4 x 10 s 1 pc) • After removing scre w , remove the v alve cov er pulling it downward. 3) Rem[...]

FILE NO. SVM-07008 – 84 – No. P ar t name Procedures Remarks 1) P erform work of item 1 of 1 . 2) Remov e screw (ST1T ∅ 4 x 10 s 1 pc.) of the upper par t of the front cabinet. • If removing the in ver ter cov er in this condition, the P .C. board can be checked. • If there is no space in the upper par t of the upper cabinet, perf or m wo[...]

FILE NO. SVM-07008 – 85 – No. P art name Procedures Remarks 1) Disconnect lead wires and connectors connected from the control board assembly to other parts. 1. Lead wires • Connection with terminal block : 3 wires (Black, White, Orange) • Connection with compressor : remov e the connector (3P) • Connection with reactor : remov e the conn[...]

FILE NO. SVM-07008 – 86 – No. P ar t name Procedures Remarks 1) P erform work of item 1 of 1 and 1 of 2 . 2) Remov e the flange nut fixing the f an motor and the propeller f an. • Flange nut is loosened b y turning clockwise . (T o tighten the flange nut, turn counter- clockwise .) 3) Remov e the propeller fan. 4) Disconnect the connector f o[...]

FILE NO. SVM-07008 – 87 – No. P art name Procedures Remarks 1. Detachment 1) P er f o r m wo r k of item 1 of 1 and 1 of 2 . Requirement: P erform the w ork on a corrugated cardboar d, cloth, etc. to pre vent scratches to the pr oduct. 2) Remov e the front cabinet, and place it down so that the f an guard side faces downw ards. 3) Remov e the h[...]

FILE NO. SVM-07008 – 88 – No. P ar t name Procedures Remarks 1) Cut the sensor 100 mm longer than old one. 2) Cut the protective tube after pulling out it (200 mm). 3) Mo ve the protectiv e tube toward the thermal sensor side and tear the tip of lead wire in two , then str ip the cov er ing par t. 4) P ass the stripped par t through the ther- m[...]

FILE NO. SVM 07008 − 89 − 1 3 . EXPLODED VIEWS AND PARTS LIST 13-1. Indoor Unit (E-Parts Assy) 401 405 410 411 404 403 Location Part Location Part No. No. No. No. 401 43T60365 TE RMINAL BLOCK; 3P 405 43T 69612 PC BOARD ASSY ;WRS-LED 403 43T69319 T EMPERAT URE SENSOR 410 43T 62003 CORD CLAMP 404 43T69320 T EMPERAT URE SENSOR 411 43T 69628 ASM-PC[...]

FILE NO. SVM-07008 − 90 − 1 3 - 2 . Indoor Unit Location Part Location Part No. No. No. No. 201 43T00478 FRONT PANEL ASSY 213 43T 19333 FIX-PIPE-SENSOR 202 43T09402 GRILLE OF AIR INLET (ORIGINAL) 217 43T22312 ASM-BEAR-MOLD 202 43T09404 GRILLE OF AIR INLET 218 43T39323 BEARING BASE (OPTIONAL;GRAY) 219 43T 20323 ASSY CROSS FLOW FAN 203 43T03357 B[...]

FILE NO. SVM-07008 − 91 − 1 3 - 3 . Outdoor Unit Location Part Location Part No. No. 1 43T19335 FAN GUARD 15 43T49327 CUSHION,RUBBER 2 43T20324 PROPELLER FAN 17 43T50316 BIMET AL THERMO 3 43T00482 FRONT CABINET 18 43T41358 COMPRESSOR(Made in China) 4 43T43403 CONDENSOR ASSEMBLY 19 43T19337 PACKED VALVE COVER 5 43T62323 TERMINAL COVER 20 43T0048[...]

FILE NO. SVM-07008 − 92 − 1 3 - 4 . Outdoor Unit (E- P a r ts Assy) 707 704 705 703 706 702 701 708 Location Part Location Part No. No. 701 43T62320 HEAT SINK 705 43T60377 T EMPERAT URE SENSOR 702 43T69620 ASM-PCB-SERV 706 43T50304 SENSOR;HEAT EXCHANGER 703 43T60352 T ERMINAL BLOCK; 6P 707 43T 62313 BASE-PLATE-PC 704 43T60326 FUSE 708 43T55325 [...]

FILE NO. SVM-03008 – 87 – TOSHIBA CARRIER CORPORA TION[...]