Toshiba RAS-13UAV-E2 manual

FILE NO. SVM-03008 SER VICE MANU AL AIR CONDITIONER SPLIT W ALL TYPE Jun., 2003 RAS-13UKV -E2 / RAS-13U A V -E2[...]

– 1 – FILE NO. SVM-03008 CONTENTS 1. SPECIFICA TIONS 1-1 Specifications 1-2 Operation Characteristic Cur ve 1-2 Capacity V ariation Ratio According to T emperature 2. REFRIGERANT R410A 2-1 Saf ety Dur ing Installation/Ser vicing 2-2 Refrigerant Piping Installation 2-3 T ools 2-4. R echarging of Refr igerant 2-5. Brazing of Pipes 3. CONSTR UCTIO[...]

– 2 – FILE NO. SVM-03008 10. HO W T O DIA GNOSE THE TR OUBLE 10-1 First Confirmation 10-2 Primar y Judgment 10-3 Judgment b y Flashing LED of Indoor Unit 10-4 Self-Diagnosis b y Remote Control (Check Code) 10-5 Judgment of T roub le by Ev er y Symptom 10-6 Check Code 1C (Mis wiring in indoor/outdoor units) and 1E 10-7 How to Diagnose T rouble i[...]

– 3 – FILE NO. SVM-03008 1. SPECIFICA TIONS 1-1. Specifications Unit model Indoor RAS-13UKV -E2 Outdoor RAS-13U A V -E2 Current limited — Cooling capacity (kW) 3.5 Cooling capacity range (kW) 0.9 – 4.0 Heating capacity (kW) 4.2 Heating capacity range (kW) 0.9 – 6.0 P ower supply 220 – 240V –1Ph –50/60Hz Electric Indoor Operation mod[...]

– 4 – FILE NO. SVM-03008 1-2. Operation Characteristic Curve <Cooling> <Heating> 7 6 5 4 3 2 1 0 Current (A) Compressor speed (r ps) 0 20 40 60 80 100 • Conditions Indoor : DB 27 ° C/WB 19 ° C Outdoor : DB 35 ° C Air flow : High Pipe length : 5m 230V 7 6 5 4 3 2 1 0 Current (A) Compressor speed (r ps) 0 20 40 60 80 100 • Cond[...]

– 5 – FILE NO. SVM-03008 (5) After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driv en heater , space heater , etc., a poisonous gas ma y occur . (6) When an air conditioning system charged with a large v olum[...]

– 6 – FILE NO. SVM-03008 T able 2-2-1 Thic knesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A R22 1/4 6.35 0.80 0.80 3/8 9.52 0.80 0.80 1/2 12.70 0.80 0.80 5/8 15.88 1.00 1.00 b) Sock et Joints Sock et joints are such that they are braz ed for connections, and used mainly f or thick pipings whose diameter[...]

– 7 – FILE NO. SVM-03008 A (mm) Con ventional flare tool Clutch type Wing nut type 1/4 6.35 0.8 0 to 0.5 1.0 to 1.5 1.5 to 2.0 3/8 9.52 0.8 0 to 0.5 1.0 to 1.5 1.5 to 2.0 1/2 12.70 0.8 0 to 0.5 1.0 to 1.5 2.0 to 2.5 5/8 15.88 1.0 0 to 0.5 1.0 to 1.5 2.0 to 2.5 T able 2-2-3 Dimensions related to flare processing f or R410A Nominal diameter Outer[...]

– 8 – FILE NO. SVM-03008 (2) Flare Connecting Procedures and Precautions a) Make sure that the flare and union portions do not hav e any scar or dust, etc. b) Correctly align the processed flare surf ace with the union axis. c) Tighten the flare with designated torque b y means of a torque wrench. The tightening torque f or R410A is the same as[...]

– 9 – FILE NO. SVM-03008 2-3. T ools 2-3-1. Required tools The ser vice por t diameter of pack ed valv e of the outdoor unit in the air conditioner 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 nut (F or ∅ 12.70 c[...]

– 10 – FILE NO. SVM-03008 2-4. Recharging of Refrigerant When it is necessary to recharge refr igerant, charge the specified amount of new refrigerant according to the f ollo wing steps. Recov er the refrigerant, and check no refrigerant remains in the equipment. Connect the charge hose to pac ked v alve ser vice por t at the outdoor unit ’ s[...]

– 11 – FILE NO. SVM-03008 1 Be sure to make setting so that liquid can be charged. 2 When using a cylinder equipped with a siphon, liquid can be charged without tur ning it upside down. It is necessar y f or charging refr igerant under condition of liquid because R410A is mix ed type of refrigerant. Accordingly , when charging refrigerant from [...]

– 12 – FILE NO. SVM-03008 (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. • The corrosiv e action to the treated metal and brazing filler is minimum. • I[...]

– 13 – FILE NO. SVM-03008 3. CONSTRUCTION VIEWS 3-1. Indoor Unit Connecting pipe (0.33m) Flare ∅ 9.52 Knock out system Back body Front panel Air outlet Air inlet Air filter Heat exchanger Knock out system 66 0 275 790 208 48 48 26 45 190 40 32 64 590 320 620 235 235 215 215 90 90 275 45 150 150 160 160 120 80 53 66 0 Hanger Hanger Hanger Hang[...]

– 14 – FILE NO. SVM-03008 3-2. Outdoor Unit 52 R15 R5.5 36 Service port Gas side (Flare ∅ 9.52) Liquid side (Flare ∅ 6.35) Electrical part cover B Detail drawing (Front Leg) B 600 or more A Detail drawing (Back Leg) 600 32.5 115 125 310 302 530 265 120 75 54 310 302 ∅ 6 Hole ∅ 436 270 600 780 90 310 330 62 ∅ 30 Drain outlet FAN GUARD [...]

– 15 – FILE NO. SVM-03008 4. WIRING DIA GRAM 4-1. Indoor Unit T able 4-1-1 Simple Check f or Failure Diagnosis Refer to the service data f or the detailed failure diagnosis. 1 2 3 4 5 6 Diagnosis Result Chec k to see if the OPERA TION indicator goes on and off when the main s witch or breaker is turned on. (Chec k the pr imar y and secondar y v[...]

– 16 – FILE NO. SVM-03008 4-2. Outdoor Unit P .C. BO ARD (MCC-813)[...]

– 17 – FILE NO. SVM-03008 5. SPECIFICA TION OF ELECTRICAL P ARTS 5-1. Indoor Unit No. Parts name T ype Specifications 1 F an motor (for indoor) ICF-340-30-2 DC 340 V , 30 W 2 Thermo. sensor (T A-sensor) ——— 10 k Ω at 25 ° C 3 DC-DC transf or mer (T01) SWT -70 DC 390 V , Secondary DC 15 V , 12 V , 7 V 4 Microcomputer µ PD780024A GK 5 H[...]

– 18 – FILE NO. SVM-03008 6. REFRIGERANT CYCLE DIA GRAM 6-1. Refrigerant Cycle Dia gram Note : • The maximum length of the pipe f or this air conditioner is 15 m. The additional charging of refrigerant is unnecessar y because this air conditioner is designed with charge-less specification. Deoxidized copper pipe NOTE : Gas leak check position[...]

– 19 – FILE NO. SVM-03008 Note : (1) Measure surface temper ature of heat exchanger pipe around center of heat e xchanger path U bent. (Thermistor themometer) (2) Connecting piping condition : 5m T emperature condition ( ° C) Indoor Outdoor 27/19 35/ – 13UKV -E2 0.8 to 1.0 9 to 11 49 to 45 High High 77 Model name Standard pressure P (MP a) H[...]

– 20 – FILE NO. SVM-03008 REMO TE CONTROL Remote Control Operation (START/STOP) 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 7. CONTROL BLOCK DIA GRAM 7-1. Indoor Unit • Louv[...]

– 21 – FILE NO. SVM-03008 7-2. Outdoor Unit (In ver ter Assembl y) 220 − 240 V 50/60 Hz MICRO-COMPUTER BLOCK DIA GRAM Over current sensor Driver circuit of P.M.V. Over current sensor Heat exchanger temp.sensor Suction temp. sensor Outdoor air temp. sensor Discharge temp. sensor Inddor unit send/receive circuit Relay circuit Noise Filter Conve[...]

FILE NO. SVM-03008 – 22 – (1) Role of indoor unit controller The indoor unit controller judges the operation commands from the remote controller and assumes the f ollowing functions. • Judgment of suction air temper ature of the indoor heat e xchanger by using the indoor temp . sensor (T A sensor) • T emperature setting of the indoor heat e[...]

FILE NO. SVM-03008 – 23 – (3) Contents of operation command signal (Serial signal) from indoor unit controller to outdoor unit controller The f ollowing three types of signals are sent from the indoor unit controller . • Operation mode set on the remote control • Compressor re volution command signal defined by indoor temper ature and set t[...]

FILE NO. SVM-03008 – 24 – 8-1-4. Prevent-freezing control The indoor heat e xchanger sensor detects refr igerant v apor temperature in COOL/DR Y operation. If the temperature is below the specified v alue, compressor motor speed is reduced so that operation is perf or med in temperature below the specified v alue to pre vent- freezing of indoor[...]

FILE NO. SVM-03008 – 25 – 8-1-8. Outdoor fan contr ol (DC fan motor) Although the outdoor f an motor dr ives the outdoor f an by non-step v ariable system of the re volution speed, the re volution speed is restricted to three steps on the conv enience of controlling. If a strong wind is lashing outside of the room, the operation ma y be continu[...]

FILE NO. SVM-03008 – 26 – 8-2. Description of Operation Circuit • T urning [ON] the breaker flashes the operation lamp . (1Hz) This is the display of po wer-ON (or notification of power f ailure). • When pushing [ST AR T/ST OP] button of the remote control, receiv e sound is issued from the main unit, and the ne xt operations are performed [...]

FILE NO. SVM-03008 – 27 – Air flow rate RAS-13UKV -E2 (rps) HIGH 77 M+ 65 MED . 53 L – , L 30 UL, SUL 30 (4) Limit for maxim um compressor motor speed by indoor fan speed When outdoor temperature sensor detected 32 ° C or low er , and indoor heat exchanger sensor detected 17 ° C or low er , the maximum compressor motor speed is limited by t[...]

FILE NO. SVM-03008 – 28 – [Basic control] *1,*2 : Appro ximate rev olution speed of M + and L to linear accordingly to temperature. Fig. 8-2-6 Setting of air flow [Cold draft preventing contr ol] The upper limit of f an rev olution speed is shown below . Fig. 8-2-7 Cold draft preventing contr ol NO TES : *1 : Stops for 2 minutes after thermosta[...]

FILE NO. SVM-03008 – 29 – Fig. 8-2-8 (4) Defrost contr ol 1) Detection of frost In heating operation, time duration while the compressor operates is counted, and defrost operation star ts by an y condition descr ibed below . a. The counted time is 28 minutes or more , and status that temperature of the outdoor heat e xchanger detected by the ou[...]

FILE NO. SVM-03008 – 30 – 2) Defrost operation Operation of the compressor is stopped once, turn off power coupler f or 4-way v alves after 10 seconds, and then e xchange the 4-wa y val ves . After 20 seconds, restar t operation of the compressor . T ur n off the outdoor f an just when the compressor stopped. If temperature of the indoor heat e[...]

FILE NO. SVM-03008 – 31 – 8-3. T emporar y Operation • T empor ar y Auto operation, e xistence of A uto Restar t, and T empor ar y Cooling operation can be set by the TEMPORAR Y button of the indoor controller . Fig. 8-3-1 T able 8-3-1 8-3-1. T emporary auto operation • When the TEMPORAR Y b utton is pushed, the A uto operation with set tem[...]

FILE NO. SVM-03008 – 32 – 8-4-1. How to set auto restart function T o set the auto restar t function, proceed as f ollows: The power supply to the unit m ust be on; the function will not set if the power is off . Push the [TEMPORAR Y] button located in the center of the front panel continuously f or three seconds . The unit receives the signal [...]

FILE NO. SVM-03008 – 33 – 8-4-3. P ower failure during timer operation When the unit is in timer operation, if it is turned off because of power f ailure, the timer oper ation is cancelled. Therefore , set the timer operation again. NO TE: The Every Timer is reset while a command signal can be received from the remote controller e ven if it sto[...]

FILE NO. SVM-03008 – 34 – 8-6. Remote Contr ol and its Functions 8-6-1. Parts name of remote control 1 1 1 1 1 Infrared signal emitter T r ansmits a signal to the indoor unit. 2 2 2 2 2 ST ART/ST OP button Push the button to start operation. (A receiving beep is heard.) Push the button again to stop oper ation. (A receiving beep is heard.) If n[...]

FILE NO. SVM-03008 – 35 – • In the illustration, all indications are indicated f or explanation. During operation, only the rele vant indications will be indicated on the remote control. 8-6-2. Names and functions of indications on remote control [Display] All indications, e xcept for cloc k time indication, are indicated by pushing the ST AR[...]

FILE NO. SVM-03008 – 36 – 8-7. Hi PO WER Mode ([Hi PO WER] b utton on the remote contr ol is pushed.) When [Hi PO WER] button is pushed while the indoor unit is in A uto , Cooling or Heating operation, Hi PO WER mar k is indicated on the displa y of the remote control and the unit operates as f ollows . (1) A utomatic operation • The indoor u[...]

– 37 – FILE NO. SVM-03008 9. INST ALLA TION PROCEDURE 9-1. Sa f ety Cautions CA UTION • THIS AIR CONDITIONER USES THE NEW HFC REFRGERANT (R410A), WHICH DOES NO T DESTRO Y THE OZONE LA YER. R410A refrigerant is apt to be affected b y impurity such as water , o xidizing membranes, and oils because the pressure of R410A refrigerant is approx. 1.[...]

– 38 – FILE NO. SVM-03008 D ANGER • FOR USE BY QU ALIFIED PERSONS ONL Y . • TURN OFF MAIN PO WER SUPPL Y BEFORE A TTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL PO WER SWITCHES ARE OFF . F AILURE T O DO SO MA Y CA USE ELECTRIC SHOCK. • CONNECT THE CONNECTING CABLE CORRECTL Y . IF THE CONNECTING CABLE IS CONNECTED WRONGL Y , ELECTRIC P ARTS [...]

– 39 – FILE NO. SVM-03008 9-1-1. Installation Diagram of Indoor and Outdoor Units Shield pipe A ir f ilt e r H oo k Hook (Attach to the front panel) 65 mm or more 1 Installation plate 1 7 0 m m o r m o r e 1 7 0 m m o r m o r e F or the rear left and left piping Inser t the cushion between the indoor unit and wall, and lift the indoor unit f or[...]

– 40 – FILE NO. SVM-03008 9-1-2. Optional installation par 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 lik ely to be exposed to a strong wind. • Use ∅ 8 mm or ∅ 10 mm anchor bolts and nuts . • If it is necessar y to drain the defrost w ater, atta[...]

– 41 – FILE NO. SVM-03008 Pa r t 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 Zeolite filter x 1 Purifying 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 ar t name (Q ’ ty) Mounting screw ∅ 4 [...]

– 42 – FILE NO. SVM-03008 • Incidentally , the “refr igerant 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 c[...]

– 43 – FILE NO. SVM-03008 9-2. Indoor Unit 9-2- 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 front p[...]

– 44 – FILE NO. SVM-03008 <When the installation plate is directl y mounted on the wall> 1. Securely fit the installation plate onto the wall by 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 t[...]

– 45 – FILE NO. SVM-03008 9-2- 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. Remove the air inlet grille. Open the air inlet grille upward and pull it tow ard you. 2. Remove the terminal cov er and cord clamp. 3. Inser t the connecting [...]

– 46 – FILE NO. SVM-03008 <How to fix the Drains Cap> 1) Inser t hexagonal wrench ( ∅ 4 mm) in a center head. Fig. 9-2-11 2) Firmly inser t drains cap . Fig. 9-2-12 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 with a[...]

– 47 – FILE NO. SVM-03008 2. Put water in the drain pan and make sure that the water is dr ained out of doors. 3. When connecting extension drain hose , insulate the connecting par t of extension dr ain hose with shield pipe. Fig. 9-2-20 CA UTION Arrange the drain pipe f or proper drainage from the unit. Improper drainage can result in de w-dro[...]

– 48 – FILE NO. SVM-03008 9-3-2. Refrigerant piping connection <Flaring> 1. Cut the pipe with a pipe cutter. Fig. 9-3-2 2. Inser t a flare nut into the pipe, and flare the pipe . • Projection mar gin in flaring : A (Unit : mm) Fig. 9-3-3 Rigid (Clutch type) Imperial (wing nut type) <Tightening connection> Align the centers of the [...]

– 49 – FILE NO. SVM-03008 9-3-3. Evacuating After the piping has been connected to the indoor unit, you can perf orm 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 pump . &[...]

– 50 – FILE NO. SVM-03008 <Stripping length of connection cable> Fig. 9-3-9 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 [...]

– 51 – FILE NO. SVM-03008 9-3-5. Gas leak test Fig. 9-3-10 • Check the flare nut connections f or the gas leak with a gas leak detector or soap water . 9-3-6. T est operation T o s witch the TEST R UN (COOL) mode, push TEMPORAR Y button for 10 sec. (The beeper will make a shor t beep .) Fig. 9-3-11 9-3-7. Auto restart setting This product is [...]

– 52 – FILE NO. SVM-03008 Inverter cover P . C. board (Soldered surface) Discharging position (Discharging period 10 seconds or more) Plug of soldering iron 10. HO W T O DIA GNOSE THE TR OUBLE The pulse modulating circuits are mounted to both indoor and outdoor units. Theref ore, diagnose troubles according to the diagnosis procedure as describ[...]

– 53 – FILE NO. SVM-03008 10-1-3. Operation which is not a troub le (Program operation) For controlling the air conditioner , the program oper ations are built in the microcomputer as described in the f ollowing table. If a claim is made for running operation, check whether or not it meets to the contents in the f ollowing table. When it does ,[...]

– 54 – FILE NO. SVM-03008 10-3. Judgment b y Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner , if the protective circuit operates , the contents of self-diagnosis are displa yed with bloc k on the indoor unit indication section. NO TES: (1) The contents of items B and C and a par t of item [...]

– 55 – FILE NO. SVM-03008 PRESET F AN MODE Hi-POWER ON OFF SET CLR ECO AU TO TIMER CLOCK CHECK RESET FIL TER FIX SWING MEMO ST ART/STOP A B AU TO A SET CLR CLOCK CHECK RESET 10-4. Self-Diagnosis by Remote Contr ol (Check Code) (1) If the lamps are indicated as shown B to H in T ab le 10-3-1, excute the self-diagnosis b y the remote control. (2)[...]

– 56 – FILE NO. SVM-03008 10-4-2. Caution at servicing (1) After ser vicing, push the ST AR T/ST OP button to return to the nor mal mode. (2) After ser vicing by the chec k code, turn off breaker of the power supply , and tur n on breaker of the power supply again so that memor y in the microcomputer returns the initial status. Howe ver , the c[...]

– 57 – FILE NO. SVM-03008 Block distinction Operation of diagnosis function Judgment and action Check Bloc k Check Cause of operation Air conditioner Remarks code code status Inv er ter over-current protective circuit operates . (Shor t time) P osition-detect circuit error or shor t-circuit between windings of compressor Current-detect circuit [...]

– 58 – FILE NO. SVM-03008 10-5. J udgment of T rouble b y Every Symptom 10-5-1. Indoor unit (Including remote contr o) (1) P ower is not turned on (Does not operate entirel y) <Primary chec k> 1. Is the supply v oltage nor mal? 2. Is the normal voltage pro vided to the outdoor unit? 3. Is the crosso ver cab le connected proper ly? 4. Is t[...]

– 59 – FILE NO. SVM-03008 (2) P ower is not turned on though Indoor P .C. boar d is replaced <Confirmation procedure> T urn on power supply . Does operation lamp flash? YES YES NO NO Is wired connectly to white and black lead wires of terminal block? Correct wirng. T o item of Power supply is not turned on .[...]

– 60 – FILE NO. SVM-03008 (3) Only indoor fan motor does not operate. <Primary chec k> (1) Is it possible to detect the po wer supply voltage (200 – 240 V) between 1 and 2 on the terminal block? (2) Does the indoor fan motor oper ate in cooling operation? (In heating operation, the indoor f an motor does not operate f or approximately 5[...]

– 61 – FILE NO. SVM-03008 (4) Indoor fan motor automaticall y star ts to rotate b y turning on power supply . <Cause> The IC is built in the indoor f an motor . Therefore the P .C. board is also mounted to inside of the motor . If the P .C . board is soldered imperf ectly or the IC is defectiv e, the f an motor may automatically rotate b [...]

– 62 – FILE NO. SVM-03008 Press ST ART/STOP 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 nearby? Does indoor unit operate when moving remote control near receiver or indoor unit? Press ST ART/STOP b[...]

– 63 – FILE NO. SVM-03008 Measure gas pressure. Gas shortage Pipe clogging Thermo operation of compressor Gas circulation amount is down. Gas leak 10-5-2. Wiring Failure (Inter connecting and serial signal wire) (1) Outdoor unit does not operate. 1) Is the v oltage between indoor ter minal bloc k 2 and 3 varied? Confirm that transmission from i[...]

– 64 – FILE NO. SVM-03008 10-6. Chec k Code 1C (Miswiring 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 from[...]

– 65 – FILE NO. SVM-03008 10-7. How to Diagnose T roub le in Outdoor Unit 10-7-1. Summarized inner diagnosis of in verter assembly 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 diode bloc k. (DB[...]

– 66 – FILE NO. SVM-03008 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 t[...]

– 67 – FILE NO. SVM-03008 T able 10-8-1 (3) Check pr ocedures No. Procedure Check points (Symptom) Causes 1 T urn off the power supply and remov e the P .C. board assemb ly from electronic par ts base. Remov e the connecting cables from the terminal block. 2 Remov e the connector of the motor and turn on the power supply . If OPERA TION lamp fl[...]

– 68 – FILE NO. SVM-03008 10-8-2. P .C. board lay out [1] Sensor characteristic table TD : Discharge temp . sensor T A : Room temp . sensor TC : Heat e xchanger temp. sensor T O : Outdoor temp . sensor TE : Outdoor heat exchanger temp . sensor TS : Suction temp. sensor GND +12V +5V Bottom View (F or the T op View , refer to page 65.) TD 100 90 [...]

– 69 – FILE NO. SVM-03008 1 Room temp. (T A) sensor Heat exchanger (TC) sensor 2 Remote control 3 Louver motor MP24GA 4 Indoor fan 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 J udgment of trouble b y symptom. Measure the resi[...]

– 70 – FILE NO. SVM-03008 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 sw ollen or exploded. 5 . Check that electrolytic liquid does not b l[...]

– 71 – FILE NO. SVM-03008 If the resistance value between 1 (Yellow lead) − 4 (Pink lead) of the connector (CN301 : Motor position detection) is 5k to 20k Ω , it is normal. 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[...]

FILE NO. SVM-03008 – 72 – 11-1. Indoor Unit 11. HO W T O REPLA CE THE MAIN P ARTS No. Part name Procedures Remarks 2 4-Screws 2 2 2 3 2 Screws 3 Drain guide 5 TC Sensor 6 Screws 4 2-Connectors 3 Left shaft 2 Center shaft How to remo ve the front panel 1) Stop operation of the air conditioner and tur n off its main power supply . 2) Pull the air[...]

FILE NO. SVM-03008 – 73 – 1) Remove the front panel, electrical par t and the horizontal louv er with the procedure 3 . 2) Remove the pipe holder on the rear side of the main unit. 3) Remove 2 scre ws of the heat exchanger on the base bearing side. 4) Remov e 2 screws of the heat e xchanger on the left side (upper and lower) from the bac k body[...]

FILE NO. SVM-03008 – 74 – 1) Remov e the front panel, electr ical par t, horizontal louver and the heat e xchanger with the procedure 4 . 2) Remov e 2 screws of the band motor (L) and other 2 screws of the band motor (R) and then remov e the cross flow f an. 3) Loosen the set screw of the cross flo w fan then disconnect the f an and the fan mot[...]

FILE NO. SVM-03008 – 75 – Fuse C01 T01 IC01 C02 R01 R04 CN10 C03 R05 L01 DB01 R Y01 CN13 IC03 IC02 CN04 1) T ur n the power supply off to stop the operation of air conditioner . 2) Remove the front panel. • Remov e the 4 fixing scre ws . 3) Remove the electrical par t base. 1 Common procedure 11-2. Micr ocomputer Replace the ther mal fuse, te[...]

FILE NO. SVM-03008 – 76 – 11-3. Outdoor Unit 1. Detachment 1) Stop operation of the air conditioner , and tur n off the main s witch of the breaker f or the air conditioner . 2) Remov e the valv e cover . (ST1T ∅ 4 x 10 s 1 pc.) • After removing scre w , remov e the valv e cover pulling it downward. 3) Remov e wir ing cov er (ST1T ∅ 4 x 1[...]

FILE NO. SVM-03008 – 77 – 1) Perf orm wor k of item 1 of 1 . 2) Remove screw (ST1T ∅ 4 x 10 s 2 pc.) of the upper par t of the front cabinet. • If removing the in ver ter cov er in this condition, P .C. board can be check ed. • If there is no space in the upper par t of the upper cabinet, perf or m work of 2 . Be careful to chec k the inv[...]

FILE NO. SVM-03008 – 78 – 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 relay connectors from P07, 08 (2P , Wh[...]

FILE NO. SVM-03008 – 79 – 1) Perf orm wor k of item 1 of 1 and 2 . 2) Remove the flange nut fixing the f an motor and the propeller fan. • Flange nut is loosened b y tur ning clockwise. (T o tighten the flange nut, turn counterclock- wise.) 3) Remove the propeller f an. 4) Disconnect the connector for f an motor from the inv er ter . 5) Remov[...]

FILE NO. SVM-03008 – 80 – 1. Detachment 1) P erform work of item 1 of 1 , and 2 , 3 , 5 . 2) T urn the coil clockwise (counterclockwise) b y 90 degrees , and remove coil from the pulse modulating v alve. 2. Attachment 1) Set take-out part of the lead wire of coil to the coil inser ting position of the pulse modulating v alve, and attach the coi[...]

FILE NO. SVM-03008 – 81 – 1) Cut the sensor 100 mm longer than old one. 2) Cut the protectiv e tube after pulling out it (200 mm). 3) Mov e the protective tube tow ard the ther mal sensor side and tear the tip of lead wire in two , then strip the cov er ing par t. 4) P ass the stripped par t through the thermal constringent tube. 5) Cut the old[...]

FILE NO. SVM-03008 – 82 – <P .C. board la yout> MCC-813[...]

FILE NO. SVM-03008 – 83 – 12. EXPLODED VIEWS AND P ARTS LIST 12-1. Indoor Unit (E-Parts Assy) Location P ar t Description No. No. 401 43T69319 T emperature Sensor , TC 10k Ω 25 ° C 402 43T60001 T erminal, 2P AC300V , 20A 403 43T69320 T emperature Sensor , T A 10k Ω 25 ° C Location P ar t Description No. No. 404 43T62003 Cord Clamp 405 431[...]

FILE NO. SVM-03008 – 84 – 12-2. Indoor Unit Location P ar t Description No. No. 201 43T00366 F ront P anel Assy 202 43T09316 Inlet Grille Assy 203 43T03302 Back Body Assy 204 43T80301 Air Filter 205 43T09309 Horizontal Louv er 206 43T08350 LED P anel Assy 207 43T70002 Drain Hose 208 43T79301 Cap Drain 209 43T21321 Motor , Louv er, MP24GA, DC 12[...]

FILE NO. SVM-03008 – 85 – 12-3. Outdoor Unit Location P ar t Description No. No. 01 43T00377 Cabinet, Front, Assy 02 43T00381 Cabinet, Back, Assy 03 43T42304 Base, Assy 04 43T00380 Cabinet, Upper , Assy 05 43T09318 Guard, F an 06 43T52310 Cov er, P acked V alve 07 43T62311 Cov er , Wiring, Assy 08 43T41336 Compressor 09 43T43330 Condenser , Ass[...]

FILE NO. SVM-03008 – 86 – 12-4. Outdoor Unit (E-Parts Assy) Location P ar t Description No. No. 701 43T62312 Heatsink 702 43T69345 P .C. Board 703 43T60027 T erminal 6P 704 43T60326 Fuse Location P ar t Description No. No. 705 43T50305 T emperature Sensor 706 43T50304 T emperature Sensor 707 43T62313 Base-Plate-P .C. 701 702 707 706 705 703 TE [...]

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