Toshiba RAS-12LKV-UL manual

R 410 A FILE NO. SVM-10019 SE R VICE MANUAL SPLIT TYPE Indoor Unit Outdoor Unit <High W all, Heat Pump T ype> <Heat Pump T ype> RAS-09LKV-UL RAS-09LAV-UL RAS-12LKV-UL RAS-12LAV-UL Feburary, 2010[...]

– 2 – CONTENTS 1 . SAFETY PRECA UTIONS .......................................................................... 3 2 . SPECIFIC A TIONS ..................................................................................... 6 3 . REFRIGERANT R410A ............................................................................. 8 4 . CONST R UCTION [...]

1. SAFETY PREC A UTIONS Installing, staring up, and servicing air-conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start-up, and service this equipment. Untrained personnel can pe[...]

DANGER • FOR USE BY QUALIFIED PERSONS ONLY. • TURN OFF MAIN POWER SUPPLY BEFORE.ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK. • CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY, ELECTRIC PARTS MAY BE DAMAGED. • CHECK THE EARTH WIRE THAT IT[...]

CAUTION CAUTION • Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet basement or expose to rain or water. • After unpacking the unit, examine it carefully for possible damage. Report any damages to your distributor. • Do not install in a place that can increase the vibratio[...]

FILE NO. SVM-10019 Unit model Indoor RAS-09LKV-UL RAS-12LKV-UL Outdoor RAS-09LAV-UL RAS-12LAV-UL Cooling capacity (Btu/h) 9000 12000 Cooling capacity range (Btu/h) 3750 -10580 2750 - 13950 Heating capacity (Btu/h) 10800 14200 Heating capacity range (Btu/h) 3070 - 16350 3070 - 19000 Power supply Electric Indoor Operation mode Cooling Heating Cooling[...]

– 7 – 120 100 80 60 40 20 0 100 95 90 85 80 75 70 65 60 55 50 105 90 91 93 95 97 99 100 102 104 106 108 109 111 113 115 Capacity Ratio (%) Capacity Ratio (%) Capacity Ratio: 100% = 9000 Btu/h (RAS-09LKV-UL) 12000 Btu/h (RAS-12LKV-UL) RAS-09LKV-UL RAS-12LKV-UL 2-2. Operation Characteristic Curve <Cooling> <Heating> 2-3. Capacity V ar[...]

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

– 9 – T able 3-2-1 Thic knesses of annealed copper pipes Nominal diameter (in.) 1/4 3/8 1/2 Outer diameter (mm) 6.35 9.52 12.70 Thi c kness in. (mm) R410A R22 0.0315 ( 0.8 0 ) 0.0315 (0.80) 0.0315 (0.80) 2. Joints F or copper pipes, flare joints or soc ket joints are used. Prior to use, be sure to remo ve all contaminants. a) Flare Joints Flare[...]

– 10 – 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 or m the flare processing correctly . Use either a flare tool f or R410A or conv en- tional flare tool. Flare processing dimensions diff er according to the type of flare tool. When using a con- ventional flare to[...]

– 11 – 43 to 45 45 to 46 B A C D T able 3-2-6 Flare and flare nut dimensions f or R22 Fig. 3-2-2 Relations between flare nut and flare seal surface 2. Flare Connecting Procedures and Precautions a) Make sure that the flare and union por tions do not ha ve an y scar or dust, etc. b) Correctly align the processed flare surf ace with the union axi[...]

– 12 – 3-3. T ools 3-3-1. Required T ools The ser vice por t diameter of pac ked v alve of the outdoor unit in the air-w ater heat pump using R410A is changed to pre vent mixing of other refrigerant. T o reinf orce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare n ut ( F or ∅ 1/2 in. 12.7mm) c[...]

– 13 – Connect the charge hose to pack ed valv e ser vice por t at the outdoor unit’ s gas side. Recov er the refr iger ant, and check no refrigerant remains in the equipment. (F or refr igerant charging, see the figure belo w .) Connect the charge hose to the vacuum pump adapter . Open fully both pack ed valv es at liquid and gas sides. Plac[...]

– 14 – 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 n[...]

– 15 – 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 r ange, flux is hard to carbonize . • It is easy to remov e slag after brazing. ?[...]

– 16 – 4. CONSTRUCTION VIEWS 4-1. Indoor Unit FILE NO. SVM-10019[...]

4-2. Outdoor Unit 10-7/8 (275) 2-23/32 ( 69 ) 3-17/32 ( 90 ) 3-17/32 ( 90 ) 23-5/8 ( 600 ) 17-5/32 ( 436 ) WIRE GUARD 12-19/32 (320) 4-1/4 ( 108 ) 4-15/16 ( 125 ) 3-3/8 ( 86 ) 1 ( 25 ) Water Drain Outlet 4-9/16 ( 116 ) A B 13-1/2 (342) COVER PACKED VALVE 11-7/16 ( 290 ) 21-11/16 ( 550 ) View Z 5-9/16 ( 141 ) 2-3/32 ( 53 ) 3-15/32 ( 88 ) Liquid side[...]

– 18 – 5. WIRING DIA GRAM 5-1. RAS- 09LKV-UL / RAS-09LAV-UL FILE NO. SVM-10019 Outdoor T erminal Block POWER SUPPL Y Indoor T erminal Block L1 L2 S L1 L2 S Heat Exchanger BLK WHI RED GRN&YEL (From Outdoor Unit) 208/230-1-60 3 1 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 1 2 3 4 5 6 7 8 9 10 11 (WHI) CN10 (YEL) CN21 Wireless Unit Assemb[...]

5-2. RAS-12LKV-UL /RAS-12LAV-UL – 19 – FILE NO. SVM-10019 1 1 2 2 1 1 2 2 1 1 2 2 3 3 4 4 5 5 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 1 1 2 2 3 3 4 1 2 3 4 4 5 5 1 1 3 3 4 4 5 5 6 6 Outdoor T erminal Block POWER SUPPL Y Indoor T erminal Block[...]

– 20 – 6. SPECIFICA TIONS OF ELECTRICAL P AR TS 6-1. Indoor Unit L = 10 m H, 16A 2 Outdoor f an m otor 3 Suction tem p. sensor (T S sensor) 10k Ω (25°C) 4 Discharge tem p. sensor (T D sensor) 62k Ω (20°C) 5 Outside air tem p. sensor (T O sensor) 10k Ω (25°C) 6 Heat exchanger tem p. sensor ( TE sensor) 10k Ω (25°C) 7 T e r m inal blo[...]

– 21 – 7. REFRIGERANT CYCLE DIA GRAM 7-1. Refrigerant Cyc le Diagram RAS-09LKV-UL / RAS-09LAV-UL NO TE : • The maximum pipe length of this air conditioner is 66ft (20 m). When the pipe length exceeds 50ft (15m), the additional Deo xidized copper pipe Outer dia. : 3/8 in (9.52mm) Thi c kness : 1/32 in (0.8mm) NO TE : Gas leak check position Re[...]

– 22 – RAS-12LKV-UL / RAS-12LAV-UL NO TE : • The maximum pipe length of this air conditioner is 66ft (15 m). When the pipe length exceeds 50ft (15m), the additional Max. : 66ft (20m) Deo xidized copper pipe Outer dia. : 3/8 in. (9.52mm) Thickness : 1/32 in. (0.8mm) NO TE : Gas leak check position Refrigerant flow (Cooling) Refrigerant flow (H[...]

7-2. O p eration Data <Coolin g > Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor condition(°C) RAS- pressure pipe temp. fan mode fan mode revolution Indoor Outdoor P Psia (MPa) T1 °F (°C) T2 °F (°C) (rps) 80/67 98/75 137 to 160 54 to 57 99 to 102 (26.7/19.4) (35/23.9) (0.9 to 1.1) (12 to 14) (37 to 39) 116 to 145[...]

– 24 – 8. CONTROL BLOCK DIA GRAM 8-1. Indoor Unit M.C.U. Indoor Unit Control Unit From Outdoor Unit 208/230-1-60 Serial Signal Communication (Operation Command and Information) Serial Signal Transmitter/Receiver Converter (D.C circuit) Noise Filter Indoor Fan Motor Louver Motor Louver Motor Drive Control Indoor Fan Motor Control Initializing Ci[...]

– 25 – 8-2. Outdoor Unit (In ver ter Assembl y) 208/230-1-60 MICRO-COMPUTER BLOCK DIA GRAM Driver circuit of P.M.V. Heat exchanger temp.sensor Suction temp. sensor Outdoor air temp. sensor Discharge temp. sensor Indoor unit send/receive circuit Relay circuit Noise Filter Converter (AC → DC) Clock frequency 4MHz High Power factor Correction ci[...]

– 26 –    9. OPERA TION DESCRIPTION 9-1. Outline of Air Conditioner Contr ol This air conditioner is a capacity- v a r ia b le type air conditione r , which uses AC or DC motor f or the indoor for 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 1[...]

– 27 − 9-2. Operation Description 1 . Basic ope r ation ........................................................................................................... 28 1. Ope r ation control ................................................................................................... 28 2 . Cooling/Heating ope r ation .....................[...]

– 28 – Item 1. Basic ope r ation Operation flow and applicable data, etc. 1. Operation control 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 shown in the belo w . 2) A signal is sent by ON button[...]

 − 29 − 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[...]

– 30 – 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 fan) is oper ated 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- [...]

– 31 – 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 fan speed to A UT O on the remote cont[...]

– 32 – Item 3. Outdoor f a n motor control Operation flow and applicable data, etc. The blo wing air volume at the outdoor unit side is controlled. Receiving the operation command from the controller of indoor unit, the controller of outdoor unit controls f an speed. * For the f an motor , a DC motor with non-stage variable speed system is used[...]

– 33 – Item 4. 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 tempera- ture and the room temperature, the capacity is adjusted b y the compressor re volution. Description 1) The difference betw een set temperature on[...]

– 34 – Item 6. 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 oper ation, the sensor of indoor heat e xchanger detects ev aporation temperature and controls the compressor speed s[...]

– 35 – Item Operation flow and applicable data, etc. Description 7. 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 ( 35.3 ° ) Heating operation/ AUTO (HEAT) Initial setting of “Heating storage position” Louver : Directs downward (80.5 ) Item 8. Lou v er control 1) Louver pos[...]

– 37 – Item 9. 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. Descrip[...]

– 38 – Item 10. 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] button, the temporary [A UTO] oper ation st[...]

– 39 – Item 12. Pulse Modulating valve (P.M.V.) Operation flow and applicable data, etc. This function controls throttle amount of the refrigerant in the refr iger ating cycle. According to operating status of the air conditioner , this function also controls the open degree of v alve with an e xpansion v al v e with pulse Modulation. Descripti[...]

– 40 – Item 13. 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 13. Self-Cleaning function Operation flow and applicable data, etc. • Self-Cleaning diagram Description 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. depend on presetting of timer functi[...]

Item Operation flow and applicable data, etc. Description − 42 − FILE NO. SVM-10019 14. Remote-A or B selection 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 , thi[...]

Item Operation flow and applicable data, etc. Description . − 43 − FILE NO. SVM-10019 . 17 . One-Touch One touch comfort is the fully automated operation that is set according to the preferable condition in a region. 0 12 25 AUTO * AUTO/L L Fan Operation Time after operation starts (min) Comfort *AUTO/L: Fan operates depends on the setting temp[...]

Item Operation flow and applicable data, etc. Description . − 44 − FILE NO. SVM-10019 19. FILTER When the elapsed time reaches 1000 hours after Indicator conditioner operation, the FILTER indicator lights. After cleaning the filters, turn off the FILTER indicator. How to Turn Off FILTER Indicator Press [RESET] button on the indoor unit. NOTE : [...]

– 45 – 9-3. A uto Resta r t Function (Default setting from factory is ON). This indoor unit is equipped with an automatic restar ting function which allows the unit to restar t operating with the set operating conditions in the e vent of a po wer supply being accidentally shut down. The operation will resume without warning three minutes after [...]

– 46 – 9-3-3. Power Failure During Timer Operation • If Timer operation is set and the power supply shut down accidentally, the previous Timer setting will be cancelled. • Daily-Timer operation will be not affected by power supply failure, if the remote controller is Operation Press [RESET] b utton for more than three seconds. (Less than 10[...]

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[...]

– 48 – 4. DRY OPERATION (COOLING ONLY) For dehumidification, a moderate cooling performance is controlled automatically. 1. Press MODE : Select Dry . 2. Press TEMP : 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[...]

− 49 − 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[...]

– 50 – 9- 4 - 3 . Name and Functions of Indications on Remote Cont r oller [Displa y] All indications, e xcept f or the clock 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 operat[...]

– 51 – 10. INST ALLA TION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units Before installing the wireless remote controller • Loading Batteries 1. Remove the battery cover. 2. Insert 2 new batteries (AAA type) following the (+) and ( − ) positions. 3 Batteries 2 Wireless remote controller A C L FILE NO. SVM-10019 Insulate th[...]

– 52 – FILE NO. SVM-10019 Fig. 10-2- 1 Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be e xposed to a strong wind. Use ∅ 5/16 in. ( ∅ 8 mm) or ∅ 3/8 in. ( ∅ 10 mm) anchor bolts and nuts. · · A P ar ts name Refrigerant piping Liquid side : ∅ 1/4 in. ( ∅ 6.35 mm) Gas side : 3/8 in. ( ∅ 9.52 mm ) Pipe [...]

– 53 – Pa rt No. 1 2 3 P ar t name (Q ’ ty) Installation plate x 1 Wireless remote control x 1 Battery x 2 P ar t name (Q ’ ty) Remote control holder x 1 Filter x 1 Pa rt No. 4 5 6 Pa rt No. 7 8 Others Name Owner ’ s ma n ual Installation ma n ual P ar t name (Q ’ ty) ∅ 5/32 x 1 s ( ∅ 4mm x 25 ) x 6 Pan head w ood scr e w ∅ 1/8 x [...]

– 54 – 10-2-3. Installation/Ser vicing T ools Changes in the product and components In the case of an air conditioner using R410A, in order to pre vent an y other refr iger ant from being charged accidentally , the ser vice por t diameter of the outdoor unit control v alve (3 wa y valv e) has been changed. (1/2 UNF 20 threads per inch) • In o[...]

– 55 – 10-3. Indoor Unit 10-3-1. Installation Location • A location which pr o vides enough spaces around the indoor unit as sh o wn in the dia g r am. • A location where there are no obstacle near the air inlet and outlet. • A location which all o ws easy installation of the piping to the outdoor unit. • A location which all o ws the f[...]

– 56 – When the installation plate is directly mounted on the wall 1. Securely fit the installation plate onto the wall b y scre ws with the upper and lower catches, that hold the indoor unit, f acing out. 2. T o mount the installation plate on a concrete wall use anchor bolts. Drill the anchor bolt holes as illustrated in the abo ve figure. 3.[...]

– 57 – CA UTION • Be sure to ref er to the wir ing system diagr am labeled inside the front panel. • Chec k local electr ical regulations f or any specific wiring instr uctions or limitations . 10-3-5. Piping and Drain Hose Installation Piping and drain hose f orming • Since condensation results in machine troubl e, make sure to insulate [...]

– 58 – 3/16 in. No gap Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap. If applied, deterioration and drain leakage of the drain plug may occur. How to attac h the drain cap 1. Inse r t h e xagonal wrench 3/16 in. (4 mm). Fig. 10-3-13 2. Fir mly inser t drain cap . Fig. 10-3-14 How to attac h the drain hose A[...]

– 59 – CA UTION • Bind the auxiliar y pipes (two) and connecting cab le with f acing tape tightly . In case of leftward piping and rear-leftward piping, bind the auxiliar y pipes (two) only with f acing tape. Fig. 10-3-18 • Carefully arrange the pipes so that none of the pipes stic k out of the rear plate of the indoor unit. • Carefully c[...]

– 60 – 10-4. Outdoor Unit 10-4-1. Installation Location • A location which pr o vides enough space around the outdoor unit as shown in the diagr am. • A location which can bear the w eight of the outdoor unit and does not allow an increase in noise le v el and vibration. • A location where the ope r ation noise and discharged air do not d[...]

FILE NO. SVM-10019 Do not apply excess torque. Otherwise, the nut may crack depending on the conditions. Outer dia. of copper pipe Tightening torque Ø1/4 in. (Ø6.35 mm) 10 to 13 lbf.ft (14 to 18 N·m) Ø3/8 in. (Ø9.52 mm) 24 to 31 lbf.ft (33 to 42 N·m) Ø1/2 in. (Ø12.70 mm) 37 to 46 lbf.ft (50 to 62 N·m) Half union Flare nut Externally thread[...]

1. The supply voltage must be the same as the rated voltage of the air conditioner. 2. Prepare the power source for exclusive use with the air conditioner. NOTE : Power supply cord • Wire type : minimum AWG14 Stripping length of the Power supply cord and Inter connecting cable L 1 L 2 L 1 L 2 S Inter connecting cable Power supply cord T erminal b[...]

Packed valve at liquid side Service port (V alve core (Setting pin)) Packed valve at gas side V acuum pump V acuum pump adapter for counter-flow prevention (For R410A only) Charge hose (For R410A only) Handle Hi (Keep full closed) Manifold valve Pressure gauge Compound pressure gauge Handle Lo Charge hose (For R410A only) Connecting pipe –101 kPa[...]

– 64 – 10-7. OTHERS 10-7-1. Gas Leak Test Check the ß are nut connections for the gas leak with a gas leak detector or soap water . Check places for ß are nut connection (indoor unit) Check places for the outdoor unit. V alve cover 10-7-2. Test Operation To switch the TEST RUN (COOL) mode, press RESET button for 10 seconds. (The beeper will m[...]

Remote cont r oller A- B selection T o separate using of remote controller f or each indoor unit in case of 2 air conditioner are installed nearly . Remote cont r oller B Setup. 1. Push RESET button on the indoor unit to turn the air conditioner ON. 2. P oint the remote controller at the indoor unit. 3. Push and hold CHK b utton on the remote contr[...]

– 66 – 11. HO W T O DIA GNOSE THE TR OUBLE The pulse motor circuits are mounted to both indoor and outdoor units. Theref ore, diagnose troubles according to the troub le diagnosis procedure as descr ibed below . (Ref er to the check points in servicing wr itten on the wiring diagrams attached to the indoor/outdoor units.) T able 11-1 K Precauti[...]

– 67 – CA UTION A high v oltage (equivalent to the suppl y volta g e) is also energized to ground thr ough the sensor s, PMV and other low-v oltage cir cuits. The sensor leads and other wires are covered with insulated tubes f or pr otection. Nevertheless, care must be taken to ensure that these wires are not pinched. T ake sufficient care to a[...]

– 68 – 11-1. First Confirmation 11-1-1. Confirmation of P ower Supply Confir m that the po wer break er operates (ON) normally . 11-1-2. Confirmation of P ower V oltage Confi r m that p o w er v oltage is A C 208 − 230 ± 10%. If power v oltage is not in this range , the unit ma y not operate nor mally . 11-1-3. Operation Which is not a Troub[...]

– 69 – 11-2. Primar y J udgment T o diagnose the troubles , use the follo wing methods. 1) Judgment b y flashing LED of indoor unit 2) Self-diagnosis by service check remote controller 3) Judgment of troub le by e very symptom Firstly use the method 1) f or diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles. 11-3. J ud[...]

– 70 – 11-4. Self-Diagnosis b y Remote Controller (Chec k Code) 1. If the lamps are indicated as shown B to E in T ab le 11-3-1, ex ecute the self-diagnosis by the remote controller . 2. When the remote controller is set to the ser vice mode , the indoor controller diagnoses the operation condi- tion and indicates the inf or mation of the self-[...]

– 71 – FILE NO. SVM-10019 11-4-2 Caution at Servicing 1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function. 2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air conditioner to normal operation. Howev[...]

FILE NO. SVM-10019 Block distinction Operation of diagnosis function Check code Block Check code Cause of operation Air conditioner status Display flashing error Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never and connecting connecting cable or operates error is detected. operate. cable. miss-wiring[...]

Block distinction Operation of diagnosis function Check code Block Check code Cause of operation Air conditioner status Display flashing error Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the board is over limit in short time. error is detected compressor, and operate again. Inverter P.C. board is[...]

Block distinction Operation of diagnosis function Check code Block Check code Cause of operation Air conditioner status Display flashing error Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as (Relation of voltage, current error is detected packed valve opening, refrigerant and frequency is abnormal) 4 ti[...]

Block distinction Operation of diagnosis function Check code Block Check code Cause of operation Air conditioner status Display flashing error Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the Because of missed wiring, error is detected compressor, and operate again. missed phase or shortage. 4 times*. 2. If ou[...]

– 76 – Operation Measure Item by symptoms Check item Conceivab le pr inciple cause Pa r t s (DB01,C27,T01 and IC02) are defective. FILE NO. SVM- 10019 11-5. Judgement of Trouble by Every Symptom 11-5-1. Indoor unit (Including remote controller) T ur n off pow er supply once, and 5 second later , tur n it on again. Is OPERA TION lamp blinking? N[...]

(2) Operation is not turned on though Indoor P.C. board is replaced <Confirmation pr ocedure> NO T ur n off pow er supply once, and 5 second later , tur n it on again. Is OPERA TION indicator flashing? Is it possible to turn on A/C b y pushing [ ] b utton on remote controller? Is voltage (DC5V, 12V and 15V) indicated on rear of indoor control[...]

– 78 – (3) On l y the indoor motor fan does not operate <Prima r y c he c k> 1. Is it possi b le to detect the p o w er supply v oltage ( A C208 – 230V) bet w een and on the te r minal b lo c k? 2. Does the indoor f an motor ope r ate in cooling operation? (In heating ope r ation, the indoor f an motor does not ope r ate f or appr o xim[...]

FILE NO. SVM- 10019 ( RAS-12LKV-UL ) Start to operate indoor unit in cooling operation at airflow level “LOW”. Turn off indoor unit and remove connector from motor. Then start to operate indoor unit with remote controller. Turn off indoor unit and remove connector from motor. Then push [ ] button on remote controller to stop flashing lamp on in[...]

Turn off indoor unit and rotate cross-flow fan by hand when the unit is on standby. At this time, is it possible to detect DC 1V or more between 5 + and 3 – of motor connector (CN 31). Is it possible to change airflow level to “HIGH”? Is it possible to rotate cross-flow fan by hand properly? Fan motor operates normally. Replace bearing of cro[...]

– 81 – Indoor fan starts rotating when power supply is turned on. Measure voltage between 3 (GND : BLACK) and 5 (V line : YELLOW) of motor connector (CN31) while indoor fan motor is rotating. DC 1.0V or more P.C. board is defective. 6 (Blue) 5 (Yellow) 4 (White) 3 (Black) 2 – 1 (Red) Motor is defective. Under DC 1.0V (Check output DC voltage [...]

– 82 – NO YES Push the [ ] button. Is transmission mark indicated? The unit does not beep at all. Operation lamp on indoor unit is not indicated. Is receiver on indoor unit exposed to direct sunlight? Avoid direct sunlight. Keep indoor unit away from fluorescent light. Does indoor unit operate when moving remote controller near receiver or indo[...]

– 83 – Refer to the chart in 11-6. Gas leak P.M.V. is defective. Miswiring of connecting wires of indoor/outdoor units Clogging of pipe and coming-off of TC sensor Gas circulation amount is down. Measure gas pressure. Gas shortage Gas leak Pipe clogging Thermo. operation of compressor Red White T er minal b lock S5277G T ester S T er minal b lo[...]

– 84 – 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 v alve clogging check Remov e TC sensor connector from the P .C . board in indoor unit. (Remov e connector from the P .C. board.) Ope r ate the air conditioner[...]

11-7. How to Diagnose Trouble in Outdoor Unit YES Turn ON the unit by remote controller and wait for 3 min. Check component parts of control board assembly by visual. (damage, burn,.. Etc.) Check Power Supply (Voltage Rate ±10%) Replace fuse. NO YES YES YES Turn OFF power supply. Check 25A fuse (F01) failure? Remove connector of compressor. Replac[...]

– 86 – YES Does outdoor fan operate normally? Replace control board. YES YES Compressor is normal Check voltage of the compressor connector (AC150V-270V)? Turn ON power s upply. NO Remove connector CN300 of outdoor fan motor. Check winding resistance by ohmmeter are correct? Check rotor locking by rotate Turn OFF power supply. Replace outdoor f[...]

FILE NO. SVM-10019 – 87 – (2) Inspection pr ocedures 1) When a P .C. board is judged to be defectiv e, check f or disconnection, burning, or discolora- tion of the copper f oil patter n or this P .C. board. 2) The P .C. board consists of the follo wing 2 par ts a. Main P .C. boar d part: DC p o w er supply circuit (5 V , 12 V ), Indoor f an mot[...]

11-8-2. 8 P .C . Board Layout 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 TS : Suction temp. sensor TA, TC, TO, TE, TS TD [1] Sensor characteristic ta[...]

– 89 – ( RAS-12LKV-UL ) 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 TS : Suction temp. sensor TA, TC, TO, TE, TS TD [1] Sensor characteristic tab [...]

– 90 – 11- 8 -3. Indoor Unit (Other Parts) 11- 8 -4. Outdoor Unit No. 1 P ar t name Room temp . (T A) sensor Heat e xchanger (TC) sensor Checking pr ocedure Disconnect the connector and measure the resistance v alue with tester . (Nor mal temp .) No. 1 P ar t name Compressor (Model : D A111A1F-20F2) Checking pr ocedure Measure the resistance v [...]

– 91 – 11- 8 -5. Che c king Method f or Ea c h P a r t No. 1 P ar t name Electrolytic capacitor (F or boost, smoothing) Checking pr ocedure 1. T ur n OFF the po wer supply breaker . 2. Discharge all three capacitors completely . 3. Chec k that safety v alve at the bottom of capacitor is not brok en. 4. Chec k that vessel is not s wollen or e xp[...]

– 92 – 11- 9 . H o w to Simp l y J ud g e Whether Outdoor F an Motor is Good or Bad 1. Symptom • Outdoor f an motor does not rotate. • Outdoor f an motor stops within sev eral tens seconds though it star ted rotating. • Outdoor f an motor rotates or does not rotate according to the position where the fan stopped, etc. Remote controller ch[...]

– 93 – 12. HO W T O REPLA CE THE MAIN P ARTS W ARNING • Since high v oltages pass through the electr ical par ts , tur n off the po wer without f ail bef ore proceeding with the repairs. Electric shocks ma y occur if the power plug is not disconnected. • After the repairs ha ve been completed (after the front panel and cabinet ha ve been in[...]

– 94 – No.  P a rt name F ront panel Pr ocedures 4) Press "PUSH" pa r t under the front panel and remov e hooks of the front panel from the installation plate. Remarks Press Front panel Installation plate 5) Remov e the front panel fixing scre ws. (2 pcs.) 6) Take off three hooks of panel from rear side. <H o w to assemble the f[...]

– 95 – No. P a rt name Electric par ts bo x assembly Procedures 1) F o ll o w the procedure up to 3) in  abo v e. 2) Remov e screw of ear th lead attached to the end plate of the e vapor ator . 3) Remov e the lead wire cove r , and remov e connector f or the f an motor and connec- tor f or the lou v er motor from the elect r ic par ts bo x a[...]

– 96 – No. P a rt name Horizontal louver Procedures 1) Remov e shaft of the hor izontal louv er from the back body . (First remov e the left shaft, and then remov e other shafts while sliding the horizontal louv er leftward.) Ev aporator (Heat e xchanger) 1) Fo llow to the procedure in the item  . 2) Remov e the pipe holder from the rear sid[...]

– 97 – No. P a rt name 1) F o ll o w to the procedure in the item . 2) Rem o v e the two screws used to secure the bearing base. 3) Remove the bearing base. <Caution at assembling> • If the bea r ing is out from the housing, push it into the specified position and then incorporate it in the main bod y . Two screws Bearing Bearing base ?[...]

– 98 – No. P a rt name F an motor Procedures 1) F oll o w to the procedure till item . 2) Loosen the set screw of the cross flo w fan. 3) Rem o v e t w o fixing scr e ws 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[...]

– 99 – No. P a rt name Cross flow f an Pr ocedures <Caution at reassembling> 1) To incorporate the fan motor incorporate the motor into the position in the following figure, and then install the fan motor. Remarks • Install the cross flow f an so that the right end of the 1st joint from the right of the cross fl o w f an is set k eeping[...]

– 100 – No.  P a rt name Common procedure Pr ocedure 1) T ur n the pow er supply off to stop the operation of air-conditioner . 2) Remov e the front panel. • Remov e the 2 fixing screws . 3) Remov e the electr ical par t base . Remarks Replace ter minal b lock, microcomputer ass’y and the P .C . board ass’ y. 12-2. Micr ocomputer FILE [...]

– 101 – 12-3. Outdoor Unit No.  P a rt name Common procedure Procedure 1. Detachment NO TE W ear gloves f or this job. Otherwise, you ma y injure y our hands on the parts, etc. 1) Stop operation of the air conditioner , and tur n off the main s witch of the breaker f or air conditioner . 2) Remov e the valv e cov er . (screw 3 pcs.) • Afte[...]

– 102 – No.  P a rt name F ront cabinet Procedure 1. Detachment 1) P erf or m step 1 in  . 2) Rem o v e the fixing scr e ws (screw 2 pcs.) used to secure the front cabinet and i n v e r ter c o v e r , the scr e ws (screw 3 pcs.) used to secure the front cabinet at the bottom, the screw used to secure the front and side cabinet (Right), a[...]

− 103 − No.  P a rt name In ver ter assemb ly P r ocedure Remarks 1) P erf or m work of item 1 in  . 2) Rem o v e scr e w (ST1 T Ø 4 × 10L 2 pc s .) of the upper par t of the front cabinet. • If removing the in v er ter cover in this condition, P .C. board can be check ed. • If there is no space abov e the unit, perf or m work of 1 [...]

– 104 – No.  P a rt name Control board assemb ly Pr ocedure 1. Disconnect the leads and connectors connected to the other par ts from the control board assembly . 1) Leads • 3 leads (b lack, white, or ange) connected to ter minal b lock. • Lead connected to compressor : Disconnect the connector (3P). • Lead connected to reactor : Disco[...]

– 105 – No.  P a rt name Side cabinet Procedure 1. Side cabinet (right) 1) P erf or m step 1 in  and all the steps in  . 2) Rem o v e the fixing scr e w used to secure the side cabinet and heat exchanger. 3) Remove the fixing screw (screw 2 pcs.) used to secure the plate conduit and Remarks Detail A Detail B Detail C 1) P erf or m w or[...]

– 106 – No.  P ar t name Compressor Procedure 1) P erf or m work of item 1 of  and  ,  ,  ,  . 2) Extract refrigerant gas. 3) Remov e the par tition board. (screw 3 pc s .) 4) Remov e the sound-insulation mater ial. 5) Remov e ter minal cov er of the compressor , and disconnect lead wire of the compressor from the ter minal. 6[...]

– 107 – No.  P a rt name Electronic e xpansion valv e coil Procedure  Wire guard 1. Detachment 1) P erf or m work of item 1 of  . 2) Remov e the front cabinet, and put it down so that wire guard side directs d o wn w ard. P erform w ork on a corrugated car dboard, c l oth, etc. to prevent fla w to the product. 3) Rem o v e the guard st[...]

– 108 – No. 11 P art name Pr ocedure Remarks TE sensor (outdoor heat e xchanging temperature sensor) • Attachment Install the sensor onto the straight pipe part of the condenser output pipe. During the installation wor k (and on its completion), tak e care not to damage the cov er ings of the sensor leads on the edges of the metal plates or o[...]

– 1 09 – 13. EXPLODED VIEWS AND P AR TS LIST 13-1. Indoor Unit ( E-Part ) FILE NO. SVM-10019 Location Part Location Part No. No. No. No. 401 43T50326 TEMPERATURE SENSOR 405 43T69641 PC BOARD ASSY; WRS-LED 402 43T60401 TERMINAL BLOCK: 3P (RAS-09LKV-UL) 403 43T50325 TEMPERATURE SENSOR 406 43T69854 PC BOARD (RAS-09LKV-UL) 404 43T62003 CORD CLAMP 4[...]

FILE NO. SVM-10019 – 110 – 13-2. In door Unit Location Part Location Part No. No. No. No. 201 43T21397 LOUVER MOTOR 215 43T39328 MOTOR BAND (LEFT) 202 43T21409 FAN MOTOR (RAS-09LKV-UL) 216 43T39329 MOTOR BAND (RIGHT) 202 43T21421 FAN MOTOR (RAS-12LKV-UL) 217 43T09409 HORIZONTAL LOUVER 203 43T22312 BEARING ASSY, MOLD 218 43T79313 CAP, DRAIN 204 [...]

– 111 – 13- 3 . Outdoor Unit (RAS-09LAV-UL) FILE NO. SVM-10019 Location Part Location Part No. No. No. No. 1 43T00535 FRONT CABINET 18 43T46351 REACTOR 2 43T00459 LEFT CABINET 21 43T20319 PROPELLER FAN 3 43T42327 BASE PLATE ASSEMBLY 22 43T21419 FAN-MOTOR 4 43T00452 UPPER CABINET 23 43T47001 NUT FLANGE 5 43T19342 WIRE GUARD 24 43T97001 NUT 6 43T[...]

– 112 – 13- 4 . Outdoor Unit (RAS-12LAV-UL) FILE NO. SVM-10019 Location Part Location Part No. No. No. No. 1 43T00535 FRONT CABINET 18 43T58306 REACTOR 2 43T00459 LEFT CABINET 21 43T20319 PROPELLER FAN 3 43T42327 BASE PLATE ASSEMBLY 22 43T21419 FAN-MOTOR 4 43T00452 UPPER CABINET 23 43T47001 NUT FLANGE 5 43T19342 WIRE GUARD 24 43T97001 NUT 6 43T[...]

– 113 – 13- 5 . P .C. Boa r d L a y out FILE NO. SVM-10019 Location Part Location Part No. No. No. No. 701 43T62320 HEATSINK 705 43T50328 TEMPERATURE SENSOR 702 43T69847 PC BOARD (RAS-09LAV-UL) 707 43T62313 BASE-PLATE-PC 702 43T69848 PC BOARD (RAS-12LAV-UL) 708 43T50329 SENSOR,HEAT EXCHANGER 703 43T60404 TERMINAL-5P 709 43T50330 SENSOR,HEAT EXC[...]

– 56 – FILE NO. SVM-03005 TOSHIBA CARRIER (THAILAND) CO.,L TD. 144/9 MOO 5, BANGKADI INDUSTRIAL P ARK, TIV ANON ROAD, T AMBOL BANGKADI, AMPHUR MUANG, P A THUMTHANI 12000, THAILAND.[...]