Toshiba RAS-17EACV-UL Service Manual Download Page 20

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6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

11 Pressure SW.

ACB-4UB82W

4.7 MPa

2 Room temp. sensor (TA-sensor)

10k

Ω

at 25°C

Heat exchanger temp. sensor (TC-sensor)

10k

Ω

at 25°C

4 Louver motor

Output (Rated) 1W, 12 poles, DC12V

(

−

)

(

−

)

MSBPC20F04

ICF-340U30-2 DC340V, 30W

No.

Fan motor (for indoor)

Parts name

Specifications

Type

FILE NO. SVM-13074

6-2. Outdoor Unit

No.

Parts name

Reactor

Outdoor fan motor

Suction temp. sensor (TS sensor)

Discharge temp. sensor (TD sensor)

Outside air temp. sensor (TO sensor)

Heat exchanger temp. sensor (TE sensor)

Terminal block (

Compressor

,17EACV-UL

EACV-UL

Coil for PMV

Coil for 4-way valve

Model name

CH-57

ICF-

340UA40-2

(Inverter attached)

——

DA130A1F-27F

DA150A1F-20F

CAM-MD12TCTH-4

STF

Rating

L = 10mH, 16A

340

V, 4

10k

Ω

(25°C)

62k

Ω

(20°C)

10k

Ω

(25°C)

10k

Ω

(25°C)

20A, AC250V

3-phases 4-poles 1100W

DC12V

– 2

–

Summary of Contents for RAS-17EACV-UL

Page 1: ... FILE NO SVM 13074 2 SERVICE MANUAL SPLIT TYPE Indoor Unit Outdoor Unit High Wall CoolingType CoolingType RAS 15EKCV UL RAS 15EACV UL RAS 17EKCV UL RAS 17EACV UL RAS 22EKCV UL RAS 22EACV UL Revised Feb 2014 ...

Page 2: ...7 5 WIRING DIAGRAM 19 6 SPECIFICATIONS OF ELECTRICAL PARTS 20 7 REFRIGERANT CYCLE DIAGRAM 21 8 CONTROL BLOCK DIAGRAM 24 9 OPERATION DESCRIPTION 26 10 INSTALLATION PROCEDURE 47 11 HOW TO DIAGNOSE THE TROUBLE 64 12 HOW TO REPLACE THE MAIN PARTS 88 13 EXPLODED VIEWS AND PARTS LIST 104 FILE NO SVM 13074 ...

Page 3: ...nor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation Before installation please read these precautions for safety carefully Be sure to follow the precautions provided here to avoid safety risks The symbols and their meanings are shown below WARNING It indicates that incorrect use of this unit ma...

Page 4: ...cordance with the code governing such installation work internal wiring regulations and the manual A dedicated circuit and the rated voltage must be used Insufficient power supply or improper installation may cause electrical shock or fire Use a cabtyre cable to connect wires in the indoor outdoor units Midway connection is not allowed Improper connection or fixing may cause a fire Wiring between ...

Page 5: ...per drainage from the unit Ensure that drained water is discharged Improper drainage can result is water leakage causing water damage to furniture Tighten the flare nut with a torque wrench using the prescribed method Do not apply excess torque Otherwise the nut may crack after a long period of usage and it may cause the leakage of refrigerant Wear gloves heavy gloves such as cotton gloves for ins...

Page 6: ...oor unit Unit model RAS 15EACV UL RAS 17EACV UL Dimension Height in mm 21 11 16 550 21 11 16 550 Width in mm 30 11 16 780 30 11 16 780 Depth in mm 11 7 16 290 11 7 16 290 Net weight lbs kg 91 41 91 41 Compressor Motor output W 1100 1100 Type Twin rotary type with DC inverter variable speed conrol Twin rotary type with DC inverter variable speed conrol Model DA130A1F 27F1 DA130A1F 27F1 Fan motor ou...

Page 7: ...W 30 Air flow rate cfm m3 min 636 18 0 Outdoor unit Unit model RAS 22EACV UL Dimension Height in mm 21 11 16 550 Width in mm 30 11 16 780 Depth in mm 11 7 16 290 Net weight lbs kg 93 42 Compressor Motor output W 1100 Type Twin rotary type with DC inverter variable speed conrol Model DA150A1F 20F1 Fan motor output W 40 Air flow rate cfm m3 min 1636 38 6 Piping Type Flare connection connection Indoo...

Page 8: ... UL RAS 17EKCV UL RAS 22EKCV UL 2 2 Operation Characteristic Curve Cooling 2 3 Capacity Variation Ratio According to Temperature Cooling FILE NO SVM 13074 0 00 1 00 2 00 3 00 4 00 5 00 6 00 7 00 8 00 9 00 10 00 11 00 12 00 13 00 0 10 20 30 40 50 60 70 80 90 100 110 120 Compressor Speed RPS Current A RAS 22EKCV UL RAS 17EKCV UL RAS 15EKCV UL 90 91 93 95 97 99 100 102 104 106 108 109 111 113 115 Out...

Page 9: ...he refrig eration cycle may become abnormally high so that a rupture or personal injury may be caused 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 driven heater space heater etc a poisonous gas may occur 6 When an air conditioning system charged with a large ...

Page 10: ... diameter in 1 4 3 8 1 2 Reference outer diameter of copper pipe jointed mm 6 35 9 52 12 70 Minimum joint thickness in mm 0 0197 0 50 0 0236 0 60 0 0276 0 70 3 2 2 Processing of Piping Materials When performing the refrigerant piping installation care should be taken to ensure that water or dust does not enter the pipe interior that no other oil than lubricating oils used in the installed equipmen...

Page 11: ...91 1 0 to 1 5 0 0394 to 0 0591 1 0 to 1 5 0 0591 to 0 0787 1 5 to 2 0 0 0591 to 0 0787 1 5 to 2 0 0 07874 to 0 0984 2 0 to 2 5 Nominal diameter 1 4 3 8 1 2 Outer diameter mm 6 35 9 52 12 70 Thickness in mm 0 0315 0 8 0 0315 0 8 0 0315 0 8 A in mm Flare tool for R22 clutch type 0 to 0 0197 0 to 0 5 0 to 0 0197 0 to 0 5 0 to 0 0197 0 to 0 5 Conventional flare tool Clutch type Wing nut type 0 0197 to...

Page 12: ...y manufacturers Table 3 2 7 shows reference values NOTE When applying oil to the flare surface be sure to use oil designated by the manufacturer If any other oil is used the lubricating oils may deteriorate and cause the compressor to burn out Table 3 2 7 Tightening torque of flare for R410A Reference values Nominal diameter 1 4 3 8 1 2 Outer diameter mm 6 35 9 52 12 70 Tightening torque lbf ft N ...

Page 13: ...ng Refrigerant cylinder Leakage detector Charging cylinder Usage Pipe flaring Flaring by conventional flare tool Connection of flare nut Evacuating refrigerant charge run check etc Vacuum evacuating Refrigerant charge Refrigerant charge Gas leakage check Refrigerant charge R410A air conditioner installation Existence of new equipment for R410A Note 2 Whether conven tional equipment can be used Not...

Page 14: ...ylinder and the connecting port of the electronic balance and charge liquid refrigerant Indoor Unit Outdoor unit Opened Opened Refrigerant cylinder with siphon Check valve Open close valve for charging Electronic balance for refrigerant charging Opened Closed Service port 3 4 Recharging of Refrigerant When it is necessary to recharge refrigerant charge the specified amount of new refrigerant accor...

Page 15: ... of silver and copper It is used to join iron copper or copper alloy and is relatively expensive though it excels in solderability 2 Phosphor bronze brazing filler Phosphor bronze brazing filler is generally used to join copper or copper alloy 3 Low temperature brazing filler Low temperature brazing filler is generally called solder and is an alloy of tin and lead Since it is weak in adhesive stre...

Page 16: ... which does not contain chlorine 3 When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water 4 Remove the flux after brazing 3 5 3 Brazing As brazing work requires sophisticated techniques experiences based upon a theoretical knowledge it must be performed by a person qualified In order to prevent the oxide film from occurring in the pipe int...

Page 17: ... 8 22 hole Connecting pipe 19 9 32 0 49m Flare Ø1 4 6 35 Drain hose 19 11 16 0 5m Connecting pipe 15 5 16 0 39m Flare Ø1 2 12 70 For stud bold Ø2 1 4 6 8 15 32 215 5 Hanger Hanger Center line Installation plate outline Grille Inlet 2 7 8 73 5 2 7 8 73 5 Air outlet Hanger Hanger Hanger 10 5 16 262 5 10 5 16 262 5 Outline of indoor unit For stud bold Ø5 16 8 Ø13 32 10 10 9 278 7 9 200 8 7 222 7 9 20...

Page 18: ...0 2 3 2 3 9 1 2 1 Ø1 Ø25 Water Drain Outlet Detail A Rear Leg R7 32 R5 5 Ø1 4 Hole Ø6 Hole Ø1 4 Hole Ø6 Hole Ø7 16x9 16 Oval Hole Ø11x14 Oval Hole Detail B Front Leg COVER PACKED VALVE View Z WIRE GUARD View Z Liquid side Flare Nut Ø1 4 Ø6 35 Gas side Flare Nut Ø1 2 Ø12 7 Service Port Air Inlet Air Oulet 23 5 8 or more 600 mm or more 2 R7 32x43 64L R5 5x17L U Shape For Ø5 16 Ø13 32 Ø8 Ø10 Anchor B...

Page 19: ...FILE NO SVM 13074 19 5 WIRING DIAGRAM ...

Page 20: ...r Unit No 1 2 3 4 5 6 7 8 9 10 Parts name Reactor Outdoor fan motor Suction temp sensor TS sensor Discharge temp sensor TD sensor Outside air temp sensor TO sensor Heat exchanger temp sensor TE sensor Terminal block 5P Compressor 15 17EACV UL 22EACV UL Coil for PMV Coil for 4 way valve Model name CH 57 ICF 340UA40 2 Inverter attached Inverter attached Inverter attached Inverter attached DA130A1F 2...

Page 21: ...ng INDOOR UNIT T1 Temp measurement Indoor heat exchanger Cross flow fan Sectional shape of heat insulator Allowable height difference 33ft 10m Allowable pipe length P Pressure measurement Gauge attaching port Vacuum pump connecting port Strainer Pulse Modulating valve at liquid side TD 4 way valve Compressor DA130A1F 27F1 Propeller fan Refrigerant amount 3 09 lbs 1 40kg OUTDOOR UNIT TC TA Outdoor ...

Page 22: ...exchanger Cross flow fan Sectional shape of heat insulator Allowable height difference 33ft 10m Allowable pipe length P Pressure measurement Gauge attaching port Vacuum pump connecting port Strainer Pulse Modulating valve at liquid side TD 4 way valve Compressor DA150A1F 20F1 Propeller fan Refrigerant amount 3 09 lbs 1 40kg OUTDOOR UNIT TC TA Outdoor heat exchanger Split capillary 2 dia 1 2 80 TE ...

Page 23: ...2 to 55 40 to 42 26 7 19 4 35 23 9 0 9 to 1 1 11 to 13 37 to 39 131 to 160 52 to 55 40 to 42 0 9 to 1 1 11 to 13 42 to 44 NOTES 1 Measure surface temperature of heat exchanger pipe around center of heat exchaner path U bent Thermistor themometer 2 Connecting piping condition 25 ft 7 5m 17EKCV UL High High 62 High High 57 15EKCV UL 131 to 160 52 to 55 41 to 43 0 9 to 1 1 11 to 13 42 to 44 22EKCV UL...

Page 24: ...ower Supply Circuit Infrared Rays 36 7kHz Remote Controller Thermo Setting Fan Speed Selection ON TIMER Setting OFF TIMER Setting Louver AUTO Swing Louver Direction Setting Operation Mode Selection AUTO COOL DRY FAN REMOTE CONTROLLER ECO Hi POWER Heat Exchanger Sensor Tc Room Temperature Sensor Ta Infrared Rays Signal Receiver and Indication Functions 3 minute Delay at Restart for Compressor Fan M...

Page 25: ... PWM synthesis function Input current release control IGBT over current detect control Outdoor fan control High power factor correction control Inverter output frequency control A D converter function P M V control Discharge temp control 4 way valve control Signal communication to indoor unit P M V Pulse Motor Valve M C U Micro Control Unit M C U For INDOOR UNIT 4 way valve P M V Inverter DC AC Ga...

Page 26: ... of error 2 Role of outdoor unit controller Receiving the operation command signal Serial signal from the indoor unit controller the outdoor unit performs its role Compressor operation control Operation control of outdoor fan motor P M V control Operations followed to judgment of serial signal from indoor side Detection of inverter input current and current release operation Over current detection...

Page 27: ... Discharge temperature control 34 10 Pulse Modulating valve P M V control 35 11 Self Cleaning function 36 12 Selt Cleaning function release 37 13 Remote A or B selection 38 9 3 Auto Restart Function 9 3 1 How to Set the Auto Restart Function 41 9 3 2 How to Cancel the Auto Restart Function 42 9 3 3 Power Failure During Timer Operation 42 9 4 Remote Control 9 4 1 Remote Controller and its function ...

Page 28: ...remote controller ON OFF Air conditioner Air purifier Operation select COOL AUTO DRY Temperature setup Air direction Swing Air volume select AUTO LOW LOW MED MED HIGH ON timer setup OFF timer setup Hi POWER Indoor unit control Command signal generating function of indoor unit operation Calculation function temperature calculation Activation compensation function of indoor fan Timer function Indoor...

Page 29: ...ng to difference between the preset temperature and the room temperature at which the automatic operation has started as shown in follow figure The Fan only operation continues unit the room temperature reaches a level at which another mode is selected 1 When reselecting the operation mode the fan speed is controlled by the previous operation mode 4 DRY operation DRY operation is performed accordi...

Page 30: ... to the fan speed level shown in Fig 2 and Table 1 according to the setup temperature and room temperature Fig 1 Fig 2 Table 1 Indoor fan air flow rate 4 5 2 5 Ta F C 3 5 2 0 2 7 1 5 2 0 1 0 1 0 0 5 Tsc a b c d e M WB 3 4 5 L W6 Air volume AUTO L L M M H W6 L M 2 W9 M H 2 WC Indication Fan speed Fan speed setup COOL ON AUTO MANUAL 3 Fan speed M L x 3 4 L 4 Fan speed M L x 2 4 L 5 Fan speed M L x 1...

Page 31: ...eration mode by the conditions of outdoor temperature To and compressor revolution the speed of the outdoor fan shown in the table is selected FILE NO SVM 13074 In cooling operation Compressor speed rps To During ECO QUIET and comfort sleep When To is abnormal 22 1 50 3 50 3 Outdoor fan speed rpm Tap f 1 f 2 f 3 f 4 f 5 f 6 f 7 230 300 350 410 480 500 530 Tap f 9 f A f B f C f D f E f F 640 640 67...

Page 32: ...ed the specified value 5 Current release control Set temp Ts Room temp Ta Correction of Hz signal Outdoor temp To Setup of current release point Capacity control continues Detection of electromotive force of compressor motor winding Detection of motor speed and rotor position Inverter output change Commutation timing change Change of compressor speed Remote controller Indoor unit Ts Ta Current dec...

Page 33: ...he indoor unit The position is automatically controlled initial setting of The set louver position is stored in memory by the microcomputer The angle of the louver is indicated as the louver closes fully is 0 1 Louver storage position Louver Directs downward 37 4 and the louver returns to the stored position when the Horizontal blowing Inclined blowing Blowing downward Air direction Inclined blowi...

Page 34: ...nd is heard and the temporary COOL operation starts 4 If the filter lamp goes on press RESET button to go off the filter lamp and then press RESET button again 5 To stop the temporary operation press the button again FILE NO SVM 13074 9 Discharge temperature control 1 Purpose This function detects error on the refrigerating cycle or error on the com pressor and performs protective control 2 Operat...

Page 35: ... control 3 If the discharge temperature was exces sively up adjust the open degree of valve so that it is in the range of set tempera ture Discharge temp control 4 To turn off the compressor while the air conditioner stops by control of the thermostat or by remote controller adjust the open degree of valve to the setup value before stop of the compressor SH Super Heat amount Ts Temperature of suct...

Page 36: ...r to the reception of the stop code 3 After the Self Cleaning operation has been performed for the specified period the unit stops operating Unit now performing cooling or dry operation Press STOP button Only timer indicator lights and Self Cleaning operation starts Time set now elapses Operation stops function During Self Cleaning operations The louver opens slightly The indoor fan operates conti...

Page 37: ... is pressed but keep holding it continue The will beep 3 times in the first 3 seconds but it is not related to Self Cleaning function After holding about 20 seconds the air conditioner will beep 5 times without any blinking of display The Self Cleaning Operation had been cancelled Remark Presetting of Self Cleaning function above AUTO How to set Self Cleaning function To set the Self Cleaning func...

Page 38: ... unit in case of 2 air conditioner are installed nearly Remote Control B Setup 1 Press RESET button on the indoor unit to turn 2 Point the remote control at the indoor unit 3 Push and hold CHK button on the Remote Control by the tip of the pencil 00 will be shown the air conditioner ON shown on the display 4 Press MODE during pushing CHK B will show on the display and 00 will disappear and the air...

Page 39: ...fort sleep mode will not operate in dry automatically mode and fan only mode automatically room temperature reach setting temperature Cooling mode The preset temperature will increase as below Press the COMFORT SLEEP button to choose the operating hours Repeat pressing to select the hours If the COMFORT SLEEP button is pressed again means cancel comfort sleep mode 1hr 3hr 5hr or 9hr 39 SLEEP FILE ...

Page 40: ...0 FILE NO SVM 13074 17 One Touch Comfort One touch comfort is the fully automated operation that is set according to the preferable condition in a region 0 12 25 Hi POWER Fan Operation Time after operation starts min Hi POWER AUTO Fan operates depends on the setting temperature and room temperature During the One Touch Comfort mode if the indoor unit receives any signal with other operation mode t...

Page 41: ...lly shut down When the unit is stand by Not operating When the unit is in operation Operation Push RESET button for more than 3 seconds Less than 10 seconds Motions The unit is in operation The green indicator is on The unit stops operating The green indicator is turned off After approx 3 seconds The unit beeps 3 times The green indicator flashes for 5 seconds If the unit is required to operate at...

Page 42: ...on once more or use the remote controller to turn it off When the system is operating Operation Push RESET button for more than 3 seconds Less than 10 seconds Motions The unit is in operation The green indicator is on The unit stops operating The green indicator is turned off After approx 3 seconds The unit beeps 3 times If the unit is required to operate at this time push RESET button once more o...

Page 43: ... is customised to the typical consumer preferences in your region of the world The coutomised settings control temperature air flow strength air flow direction and other settings to provide you alternate contact with ONE TOUCH OF THE BUTTON If you prefer other settings you can select from the many other operation functions of your Toshiba unit Press ONE TOUCH Start the operaton 2 AUTOMATIC OPERATI...

Page 44: ...SET button the unit can start or stop without using the remote control Operation mode is set on AUTOMATIC operation preset temperature is 75 F 24 C and fan operation is automatic speed 8 TIMER OPERATION Setting the ON Timer Setting the OFF Timer Press ON Set the desired ON timer Press OFF Set the desired OFF timer Press SET Set the timer Press SET Set the timer Press CLR Cancel the timer Press CLR...

Page 45: ...and hold the RESET button on the indoor unit for 3 seconds to cancel the Setting operation 3 beep sound but OPERATION lamp does not blink 11 QUIET OPERATION To operate at super low fan speed for quiet operation except in DRY mode Press QUIET Start and stop the operation Note Under certain conditions QUIET operation may not provide adequate cooling due to low fan speed features 12 COMFORT SLEEP OPE...

Page 46: ...on to start and press it again to stop operation 9 A B change indicator remote controller When the remote controller switching function is set B appears in the remote controller display When the remote controller setting is A there is no indication at this position 10 Comfort sleep Indicates when comfort sleep is activaled Press comfort sleep button to select function 11 Quiet Indicates when quiet...

Page 47: ... cushion between the indoor unit and wall and tilt the indoor unit for better operation For the rear left and left piping Wall Make sure to run the drain hose sloped downward Do not allow the drain hose to get slack Cut the piping hole slightly sloped downward The auxiliary piping can be connected to the left rear left rear right right bottom right or bottom left Right Rear right Bottom right Rear...

Page 48: ...h 10 2 1 Field supplied installation part 10 2 Installation Fixing bolt arrangement of outdoor unit B C 4 1 4 in 108 mm 1 1 8 in 28 mm 4 15 16 in 125 mm Ø 1 i n 2 5 m m Air inlet Air outlet 3 3 8 in 86 mm 4 in 102 mm 12 19 32 in 320 mm 23 5 8 in 600 mm 3 17 32 in 90 mm Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong winds Use 5 16 in 8 mm or 3 8 i...

Page 49: ...1 Wireless remote control x 1 Battery x 2 Part name Q ty Part No Part No Part name Q ty Toshiba New IAQ filter L x 1 5 Flat head wood screw 3 1 x 16 s x 2 Mounting screw 4 x 25 s x 6 Toshiba New IAQ filter L x 1 7 8 Remote control holder x 1 4 6 Others Name Owner s manual Installation manual Screw 4 x 10 s x 2 9 ...

Page 50: ... size have been changed to 1 2 UNF 20 threads per inch When purchasing a charge hose be sure to confirm the port size As pressure is high and gasification speed is fast it is difficult to read the indicated value by means of charging cylinder as air bubbles occur The size of opposite sides of flare nuts have been increased Incidentally a common wrench is used for nominal diameters 1 4 and 3 8 By i...

Page 51: ...rong wind FILE NO SVM 13074 Do not use the supplied drain nipple for draining water Drain the water from all drain holes directly To protect the outdoor unit from snow accumulation install a holding frame and attach a snow protection hood and plate Do not use a double stacked design Snow protection plate Snow protection hood Snow accumulation line Holding frame At least 19 11 16 in 500 mm Install ...

Page 52: ...he terminal block as shown in the figure below and secure it tightly with screws 5 You should not have extra cables 6 Secure the power cord and the connceting cable with the cord clamp 7 Attach the electric parts cover and the valve cover on the outdoor unit 8 RUN PIPING AND INTERCONNECTING CABLE TO THE INDOOR UNIT 10 3 4 Electrical Work ELECTRICAL SHOCK HAZARD Failure to follow this warning could...

Page 53: ...1 3 16 30 2 12 16 70 3 8 10 3 8 10 1 3 16 30 1 9 16 40 Conduit plate Connector Lock nut Valve cover Wrong wiring connection may cause some electrical parts burn out Be sure to comply with LOCAL CODES Every wire must be connected firmly If incorrect or incomplete wiring is carried out it will cause an ignition or smoke CAUTION Fig 10 3 6 Fig 10 3 7 Fig 10 3 8 NOTE Interconnecting cable Wire type mi...

Page 54: ...ng plate Fig 10 4 2 When the installating plate is directly mounted to the wall 1 To hook up the indoor unit securely fit the mounting plate onto the wall by screwing it in the upper and lower parts 2 To mount the mounting plate on a concrete wall with anchor bolts drill the anchor bolt holes as illustrated in the figure shown below 3 Make sure the mounting plate is leveled CAUTION When installing...

Page 55: ...minal cover and air inlet grille to the indoor unit 10 4 2 Wiring Connection FILE NO SVM 13074 Fig 10 4 4 CAUTION Failure to firmly install the unit may result in personal injury and property damage if the unit falls In case the unit is to be installed in a block brick concrete or similar type walls make 3 16 in 5 mm dia holes in the wall Insert clip anchors for appropriate mounting screws p NOTE ...

Page 56: ... controller and wall with the provided screw 3 1 x 25L as shown in figure 13 tighten firmly but not over 0 15 N m 0 02 kgf m 10 Put back the remote controller cover specifications are shown in figure 9 Fig 10 4 12 Control wire 30 mm 10 mm Wire size 28 22 AWG 0 08 0 32 mm2 Outer diameter not over 4 7 mm control wire length 30 m or less 9 Control wire Terminal Tighten firmly but not over 0 25 N m 0 ...

Page 57: ... Rear right Rear left Bottom left Left Bottom right Right Right Rear right Bottom right Rear left Bottom left Left 2 Changing drain hose For leftward connection bottom leftward connection and rearleftward connection s piping it is necessary to change the drain hose and drain cap How to remove the drain cap Clip the drain cap with needle nose pliers and pull out 1 Die cutting front panel slit Heat ...

Page 58: ...cting pipe make sure to use a spring bender to avoid crushing the pipe Fig 10 4 21 NOTE If the pipe is bent incorrectly the indoor unit may set on the wall unstably After passing the connecting pipe through the pipe hole connect the connecting pipes to the refrigerant line and wrap facing tape around them CAUTION Bind the refrigerant lines two and connecting cable with facing tape tightly In case ...

Page 59: ...se Do not form the drain hose into the waved shape Do not put the drain hose end into water Do not put the drain hose end in the drainage ditch 2 in CAUTION 2 Put water in the drain pan and make sure that the water is being drained outside 3 When connecting extension drain hose insulate the connection part of extension drain hose with shield pipe Shield pipe Extension drain hose Inside the room Dr...

Page 60: ...ence The location of the remote control should be determined as shown below Indoor unit Top view Side view Remote control Remote control Indoor unit Reception range Reception range Fig 10 4 28 with one indoor unit at a time Remote control B Setup 1 Press RESET button on the indoor unit to turn the air conditioner ON 2 Point the remote control at the indoor unit 3 Push and hold CHK button on the Re...

Page 61: ...ice port 8 Securely tighten the caps of packed valves FILE NO SVM 13074 61 Packed valve at liquid side Service port Valve core Setting pin Packed valve at gas side Vacuum pump Vacuum 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 ...

Page 62: ...refrigerant accurately Overcharging may cause serious trouble to the compressor Minimum refrigerant pipe is 6 6ft 2m Using pipe shorter than that may cause a malfunction of the compressor or other components The power supply shall be connected to the outdoor unit by 3 wires The connecting cable between the indoor unit and outdoor unit is 4 wires This cable provides the power for the indoor unit an...

Page 63: ...ancel the Auto Restart 1 Press and hold the RESET button on the indoor unit for 3 seconds to cancel the operation 3 beeps will sound but OPERATION lamp does not blink 2 Press and hold the RESET button on the indoor unit for 3 seconds to set the operation 3 beeps will sound and OPERATION lamp blink 5 time sec for 5 seconds Do not operate ON timer and OFF timer Note Default setting of auto restart o...

Page 64: ...ase of touching parts on the P C board by hand The new inverter 3DV inverter will be incorporated starting with this unit 3DV 3 shunt Discrete Vector control The control circuitry has an uninsulated construction Fig 11 1 IGBT 6 FET 6 MCU Compressor Fan motor Shared potential Driver Driver Amplifier Amplifier No 1 2 3 4 5 6 7 8 9 10 Troubleshooting Procedure First Confirmation Primary Judgment Judg...

Page 65: ... NOT lay the circuit board assembly flat Precautions when inspecting the control section of the outdoor unit NOTE A large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging voltage DC265 to 360V remains and discharging takes a lot of time After turning off the power source if touching the charging section befo...

Page 66: ... the room temperature is within range of compressor ON In Dry and ECO mode FAN air flow display does not change even though FAN air flow select button is operated Increasing of compressor motor speed stops approx 30 seconds after operation started and then compressor motor speed increases again approx 30 seconds after In AUTO mode the operation mode is changed Description The OPERATION lamp of the...

Page 67: ...door unit and stop operation of the air conditioner 3 When item B and C or item B and apart of item E occur concurrently priority is given to the block of item B OPERATION Green Flashing display 1 Hz OPERATION Green TIMER Yellow FILTER Orange Flashing display 5 Hz OPERATION Green FILTER Orange Flashing display 5 Hz OPERATION Green TIMER Yellow Flashing display 5 Hz OPERATION Green Flashing display...

Page 68: ...door unit will beep once Beep and the display of the remote controller will change as follows The TIMER indicator of the indoor unit flashes continuously 5 times per 1 sec Check the unit with all 52 check codes to as shown in Table 11 4 1 Push ON or OFF button to change the check code backward If there is a fault the indoor unit will beep for 10 seconds Beep Beep Beep Note the check code on the di...

Page 69: ...r P C TA sensor The room Operation Flashes when 1 Check the sensor TA and connection board temperature sensor is continues error is detected 2 In case of the sensor and its short Circuit or disconnection connection is normal check the P C board TC sensor The heat Operation Flashes when 1 Check the sensor TC and connection exchanger temperature continues error is detected 2 In case of the sensor an...

Page 70: ...f the P C board outdoor unit open 4 The outdoor unit abnormal stop at circuit of signal some time Signal circuit of indoor If the other check codes are found P C board or outdoor concurrently check them together P C board is failure Check protector hardware such in some period as Hi Pressure switch Thermal Relay etc Check refrigerant amount or any possibility case which may caused high temperature...

Page 71: ...ure resistance of compressor winding If circuit is shortage replace the compressor Current detect circuit of All OFF Flashes after Even if trying to operate again all inverter P C board error error is detected operations stop replace inverter 4 times P C board TE sensor The heat All OFF Flashes after 1 Check sensors TE TS and connection exchanger temperature error is detected 2 In case of the sens...

Page 72: ...become 2 times When error count comes 4 times record error to check code But after re starting operation if no error is detected and air conditioner can operate more than 6 minutes error count is cleared The others Return signal of the outdoor Indoor unit Flashes when 1 Check power supply Rate 10 including unit has been sent when operates error is detected 2 If the air conditioner repeat operates ...

Page 73: ...onfirm its operation sound of initial operation etc 4 Observe any possibility cause which may affect high temperature of compressor Compressor is high current All OFF Flashes after 1 Check installation conditions such as though operation Hz is error is detected packed valve opening refrigerant decreased to minimum limit 4 times amount and power supply rate 10 Installation problem both of operation...

Page 74: ...connector between CN10 1 3 short circuit Item by symptoms Operation Check Item Considerable principle cause Measures Remote controller is defective Refer to 5 Troubleshooting for remote controller Unit operates normally Replace main P C board Replace fan motor Is fuse F01 of indoor control board blown Microcomputer is defective NO NO NO NO NO YES YES YES YES YES YES Point remote to digital camera ...

Page 75: ...er starting unit Start to operate the indoor unit in At this time is it possible to detect DC 1V or more between 5 and 3 of motor connector CN31 Is it possible to detect DC 294 325V between 1 and 3 of motor connector CN31 Motor connection condition Is it possible to detect DC 15V between 4 and 3 of motor connector CN31 Is it possible to detect DC 15V between 4 and 3 of motor connector CN31 Does in...

Page 76: ...evel to HIGH Is it possible to rotate cross flow fan by hand properly Fan motor operates normally Replace bearing of cross flow fan YES YES YES NO NO NO Does check cross flow fan bearing normal condition Replace indoor fan motor Peplace main P C board Does check display on remote show high Change the new PC board Does fan speed change Replace remote Replace motor NO NO NO YES YES YES 76 FILE NO SV...

Page 77: ...or fan motor Therefore the P C board is also mounted to inside of the motor If the P C board is soldered imperfectly or the IC is defective the fan motor may automatically rotate by turning on power supply Inspection procedure 3 2 1 Remove the grille 3 2 2 Remove the cover terminal by release one screw 3 2 3 Check DC voltage with CN31 connector while the fan motor is rotating 1 Turn on breaker 2 A...

Page 78: ...nitor when push button Is transmission mark indicated Reciver P C board is defective Replace reciver P C board Replace batteries Replace remote controller Normal operation Remote controller is defective NO YES NO YES NO YES NO YES NO YES NO YES NO YES Push the button Does indoor unit beep and operate Reset by take off battery the push button till LCD 5 Troubleshooting for remote controller Primary...

Page 79: ...that transmission from indoor unit to outdoor unit is correctly performed based upon the follow ing diagram NOTE Measurement should be performed 2 minutes and 30 seconds after starting of the operation Be sure to prepare a diode for judgment Normal time Voltage swings between DC15 and 60V Inverter Assembly check 11 5 1 Abnormal time Voltage does not vary 2 Outdoor unit stops in a little while afte...

Page 80: ... pressure from service port and add gas if pressure is low Is connecter of coil connected to inverter Is coil of the pulse motor valve P M V correctly set Existence of condensation at outlet of P M V If there is condensation at outlet 1 4 inch Ø6 35mm valve side the valve is clogged Are temp sensors of indoor outdoor units correctly set to the holder NOTE The temperature sensors which are used to ...

Page 81: ... failure Remove connector of compressor Replace control board Check terminal Voltage of electrolytic capacitor are in Voltage Rate Turn ON power Supply NO 10 x 1 414 Replace control board NO Cooling 17 C Connect discharge resistance approx 100Ω 40W or soldering iron plug between terminals of the electro lytic capacitor 500µF of C14 with printed CAUTION HIGH VOLTAGE on P C board Discharging positio...

Page 82: ... CN300 of outdoor fan motor Check winding resistance by ohmmeter are correct Check rotor locking by rotate Turn OFF power supply Replace outdoor fan motor NO Replace compressor Replace control board Replace compressor YES Does compresser operate normally with hand Can it rotate Turn OFF power supply Check compressor winding resistance correct is in rate A FILE NO SVM 13074 NO NO YES NO ...

Page 83: ... the P C board be sure to shut off the power supply breaker 2 When removing the P C board hold the edge of the P C board and do not apply force to the parts 3 When connecting or disconnecting the connec tors on the P C board hold the whole housing Do not pull at the lead wire PRESET ONE TOUCH QUIET SWING TIMER ON FILTER CHK C F CLOCK OFF CLR SLEEP SET FIX Hi POWER ECO COMFORT SLEEP MODE TEMP FAN 1...

Page 84: ... 40 50 Resistance value kΩ Temperature C TD Discharge temp sensor TA Room temp sensor TC TCJ Heat exchanger temp sensor TO Outdoor temp sensor TE Outdoor heat exchanger temp sensor TS Suction temp sensor TA TC TCJ TO TE TS TD 1 Sensor characteristic table FILE NO SVM 13074 ...

Page 85: ...ature sensor TE Checking procedure Measure the resistance value of each winding by using the tester at 20 C Measure the resistance value of winding by using the tester at 20 C Measure the resistance value of winding by using the tester at 20 C Measure the resistance value of winding by using the tester at 20 C Disconnect the connector and measure resistance value with the tester Normal temperature...

Page 86: ...ic liquid does not blow off 6 Check that the normal charging characteristics are shown in continuity test by the tester Case that product is good Pointer swings once and returns slowly When performing test once again under another polarity the pointer should return C12 C13 C14 15 17EACV UL 500µF 400V 22EACV UL 760µF 400V 1 Turn OFF the power supply breaker 2 Completely discharge the four electroly...

Page 87: ...or P C board 3 How to simply judge whether outdoor fan motor is good or bad NOTE However GND circuit error inside of the motor may be accepted in some cases when the above check is performed When the fan motor does not become normal even if P C board is replaced replace the outdoor fan motor If the resistance value between 1 Red lead 2 White lead 2 White lead 3 Black lead 3 Black lead 1 Red lead o...

Page 88: ...shed they may ignite any oil mixed with the refrigerant gas 2 Do not use welding equipment in an airtight room Carbon monoxide poisoning may result if the room is not properly ventilated 3 Do not bring welding equipment near flammable objects Flames from the equipment may cause the flammable objects to catch fire If keeping the power on is absolutely unavoidable while doing a job such as inspectin...

Page 89: ...pcs 6 Take off four hooks of panel from rear side How to assemble the front panel 1 Press three center positions and two lower center positions of the air outlet and then hang the hanging hooks 4 pcs at the top side of the front panel to the rear plate 2 Tighten four screws Incomplete hanging or incomplete pressing may cause a dewdrops or generation of a fluttering sound 2 Screws Three hooks 4 Scr...

Page 90: ... the bottom 4 Disengage the display unit by simply pushing at the top of the display unit 5 Remove the fixing screw that secures the conduit mount electric parts box assembly LED assembly and remove the assembly Electric art box cover s screw TC sensor Earth Screw Fan motor connector Louver motor connector Fixing screw LED assembly Fixing screw Loof the qrunding wire p FILE NO SVM 13074 1 Remove s...

Page 91: ...ther shafts while sliding the horizontal louver leftward Evaporator Heat exchanger 1 Follow to the procedure in the item 2 Remove the pipe holder from the rear side of the main unit Figure 1 3 Remove two fixing screws at the left side of the end plate of the heat exchanger Remarks Screw Screw FILE NO SVM 13074 Figure 1 Figure 2 Figure 3 Pipe hoolder ...

Page 92: ...earing Bearing base Two screws Bearing Bearing base FILE NO SVM 13074 One screw Two screws Exchanger lock 4 Remove three fixing screw at the right side of the heat exchanger and separate the heat exchanger from the back body How to assemble the heat exchanger Heat exchanger assembly on the back body and secure it using the fixing screw without exchanger lock due to exchanger lock assemble for prot...

Page 93: ...ew of the cross flow fan 3 Remove two fixing screws of the motor cover and them remove the motor cover 4 Remove two more fixing screws of the motor band and remove the motor band Remarks 5 Pull the fan motor outward Set screw Two screws on motor band Two screws on motor cover FILE NO SVM 13074 p ...

Page 94: ...e main unit Holding the set screw install the cross flow fan so that flat area on shaft of the fan motor comes to the mounting hole of the set screw q FILE NO SVM 13074 Perform positioning of the fan motor as follows When assembling the fan motor the fan motor must be installed in such a way that the fan motor leads will be taken out is positioned at the bottom front After assembling the two hooki...

Page 95: ... power supply off to stop the operation of air conditioner 2 Remove the front panel Remove the 2 fixing screws 3 Remove the electrical part base Remarks Replace terminal block microcomputer ass y and the P C board ass y 12 2 Microcomputer FILE NO SVM 13074 ...

Page 96: ...remove connecting cable 4 Remove the upper cabinet screw 5 pcs After removing screws remove the upper cabinet pulling it upward 2 Attachment 1 Attach the upper cabinet Remarks FILE NO SVM 13074 screw 5 pcs 2 Perform cabling of connecting cable and attach the cord clamp Fix the cord clamp by tightening the screws screw 3 pcs fitting 2 concave parts of the cord clamp to each connecting cables 3 Atta...

Page 97: ...4 2 Attachment 1 Insert the claw on the front left side into the side cabinet left 2 Hook the bottom part of the front right side onto the concave section of the bottom plate Insert the claw of the side cabinet right into the square hole in the front cabinet 3 Return the screws that were removed above to their original positions and attach them screws screw 2 pcs used to secure the motor base The ...

Page 98: ...apacitor is one with mass capacity Therefore it is dangerous that a large spark generates if short circuiting between Requirement As each connector has a lock mecha nism avoid to remove the connector by holding the lead wire but by holding the connector Discharging position Discharging period 10 seconds or more Plug of soldering iron The connector is one with lock so remove it while pushing the pa...

Page 99: ...t be released before they are disconnected 2 Remove the control board assembly from the P C board base Remove the heat sink and control board assembly while keeping them screwed together NOTE Disengage the four claws of the P C board base hold the heat sink and lift to remove it 3 Remove the two fixing screws used to secure the heat sink and control board assembly 4 Mount the new control board ass...

Page 100: ...ler fan 4 Disconnect the connector for fan motor from the inverter 5 Remove the fixing screws 4 pcs holding by hands so that the fan motor does not fall Precautions when assembling the fan motor Tighten the flange nut using a tightening torque of 3 3 lbf ft 4 5 N m Fan motor Propeller fan Fan motor Flange nut FILE NO SVM 13074 2 Side cabinet left 1 Perform step 1 in 2 Remove the fixing screw used ...

Page 101: ...move pipe connected to the compressor with a burner Take care to keep the 4 way valve away from naked flames Otherwise it may malfunction 7 Remove the fixing screw of the bottom plate and heat exchanger 8 Remove the fixing screw of the bottom plate and valve fixing plate Remarks Reactor 1 Perform work of item 1 of and 2 Remove screws fixing the reactors screw 5 pcs FILE NO SVM 13074 9 Pull upward ...

Page 102: ... wire guard 4 Turn the front cabinet into opposite site then FILE NO SVM 13074 pull wire guard up ward 2 Attachment 1 Insert claws 2 positions of the wire guard in the holes of the front cabinet Push the hook 4 positions by hands and fix by Check that all the claws hooks are fixed to the specified positions 1 Detachment 1 Perform step 1 in all the steps in and 1 in 2 Remove the coil by pull it upw...

Page 103: ...d are the proper positions as instructed The product will not be controlled properly and trouble will result if the sensors have not been installed in their proper positions Detail C 12 13 14 CAUTION FILE NO SVM 13074 Detail A TD sensor TO sensor TS sensor Suction pipe temperature sensor Attachment Install the senser onto the straight pipe part of the suction pipe Be careful for the lead direction...

Page 104: ...50327 SENSOR HEAT EXCHANGER 407 43T6V420 PC BOARD RAS 15EKCV UL 402 43T60402 TERMINAL 3P 407 43T6V421 PC BOARD RAS 17EKCV UL 403 43T50325 TEMPERATURE SENSOR 407 43T6V422 PC BOARD RAS 22EKCV UL 404 43T62003 CORD CLAMP 412 43T21434 STEPPING MOTOR 405 43T6V316 PC BOARD ASSY WRS LED 413 43T60386 MOTOR CORD Description Description ...

Page 105: ...3T19333 HOLDER SENSOR 205 43T09040 LOUVER HORIZONTAL 217 43T49010 PIPE SHIELD 206 43T70313 HOSE DRAIN 218 43T82008 PLATE INSTALLATION 207 43T79313 CAP DRAIN 219 43T49043 HOLDER PIPE 208 43T21421 FAN MOTOR 220 43T62031 COVER TERMINAL 209 43T20016 FAN ASSY CROSS FLOW 221 43T66340 REMOTE CONTROLLER 210 43T39021 BASE BEARING 222 43T83003 HOLDER REMOTE CONTROL 211 43T22312 BEARING ASSY MOLD 223 43T8231...

Page 106: ... CUSHION RAS 15 17EACV UL 26 43T46359 4WAY VALVE 8 43T41433 COMPRESSOR 27 43T63324 4WAY VALVE COIL ASSEMBL RAS 22EACV UL 28 43T63319 HOLDER SENSOR 9 43T43447 CONDENSER ASSEMBLY 30 43T39337 MOTOR BASE CONNECTION PLATE 10 43T46358 VALVE PACKED 6 35 DIA 31 43T63318 HOLDER SENSOR 11 43T46374 VALVE PACKED 12 7DIA H4 32 43T63317 HOLDER SENSOR 12 43T47331 BONNET 6 35 DIA 33 43T63323 HOLDER SENSOR 13 43T4...

Page 107: ...T62331 HEATSINK RAS 22EACV UL 705 43T50328 TEMPERATURE SENSOR 702 43T6V429 PC BOARD RAS 15EACV UL 707 43T62313 BASE PLATE PC 702 43T6V430 PC BOARD RAS 17EACV UL 708 43T50329 SENSOR HEAT EXCHANGER 702 43T6V431 PC BOARD RAS 22EACV UL 709 43T50330 SENSOR HEAT EXCHANGER 703 43T60404 TERMINAL 5P 710 43T50331 SENSOR HEAT EXCHANGER Description Description ...

Page 108: ... 56 FILE NO SVM 03005 TOSHIBA CARRIER THAILAND CO LTD 144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAMBOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND ...

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Toshiba RAS-17EACV-UL, Service Manual

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