Toshiba RAS-18N3AV-E Service Manual Download Page 105

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13. EXPLODED VIEWS AND PARTS LIST

13-1. Indoor Unit (Part-E)

FILE NO. SVM-12070

Location

Part

Location

Part

No.

401

43T50308

SENSOR HEAT EXCHANGER

407

43T69723

PC BOARD ASSY (RAS-18N3KVR-E)

402

43T60331

TERMINAL; 3P

407

43T69724

PC BOARD ASSY (RAS-22N3KVR-E)

403

43T69320

TEMPERATURE SENSOR

411

43T51308

SWITCH ASSY,MICRO

404

43T62003

CORD CLAMP

412

43T21434

STEPPING-MOTOR

405

43T6V317

PC BOARD ASSY;WRS-LED

413

43T60386

MOTOR CORD

Description

Summary of Contents for RAS-18N3AV-E

Page 1: ...R410A FILE NO SVM 12070 SERVICE MANUAL December 2012 SPLIT TYPE Indoor Unit Outdoor Unit RAS 18N3KVR E RAS 18N3AV E RAS 22N3KVR E RAS 22N3AV E ...

Page 2: ...5 5 WIRING DIAGRAM 17 6 SPECIFICATIONS OF ELECTRICAL PARTS 18 7 REFRIGERANT CYCLE DIAGRAM 19 8 CONTROL BLOCK DIAGRAM 22 9 OPERATION DESCRIPTION 24 10 INSTALLATION PROCEDURE 48 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 12070 ...

Page 3: ... EXPLOSION TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD PLACE THE UNIT WELL AWAY MORE THAN 2 M FROM HEAT SOURCES SUCH AS RADIATORS HEATERS FURNACE STOVES ETC WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN BE VERY CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT R410A WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE IF AIR OR ANY OTHER GAS IS MIXED ...

Page 4: ...t where flammable gas may leak It there is any gas leakage or accumulation around the unit it can cause a fire Do not select a location for installation where there may be excessive water or humidity such as a bathroom Deterioration of insulation may cause elestrical shock or fire Installation work must be performed following the instructions in this installation manual Improper installation may c...

Page 5: ... Ensure that drained water is discharged Improper drainage can result in 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 installation work Failure to ...

Page 6: ...fference m Refrigerant Name of refrigerant Weight kg Wiring connection Power supply Interconnection Usable temperature range Indoor o C Outdoor o C Accessary Indoor unit Installation plate Wireless remote controller Batteries Batteries cover Remote controller holder Toshiba New IAQ filter Long Mounting screw Pan head wood screw Plasma air purifier Installation instruction Owner s manual Outdoor un...

Page 7: ...n Characteristic Curve Cooling Heating 2 3 Capacity Variation Ratio According to Temperature Cooling Heating 0 00 1 00 2 00 3 00 4 00 5 00 6 00 7 00 8 00 9 00 10 00 0 10 20 30 40 50 60 70 80 90 100 110 120 Compressor Speed RPS Current A 0 00 1 00 2 00 3 00 4 00 5 00 6 00 7 00 8 00 9 00 10 00 0 10 20 30 40 50 60 70 80 90 100 110 120 Compressor Speed RPS Current A RAS 22N3KVR E RAS 22N3KVR E RAS 18N...

Page 8: ... the refrigeration 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 9: ...er or dust does not enter the pipe interior that no other oil than lubricating oils used in the installed air water heat pump is used and that refrigerant does not leak When using lubricating oils in the piping processing use such lubricating oils whose water content has been removed When stored be sure to seal the container with an airtight cap or any other cover 1 Flare processing procedures and...

Page 10: ... diameter mm mm 1 4 6 35 0 8 3 8 9 52 0 8 1 2 12 70 0 8 5 8 15 88 1 0 A mm Flare tool for R22 clutch type 0 to 0 5 0 to 0 5 0 to 0 5 0 to 0 5 Conventional flare tool Clutch type Wing nut type 0 5 to 1 0 1 0 to 1 5 0 5 to 1 0 1 0 to 1 5 0 5 to 1 0 1 5 to 2 0 0 5 to 1 0 1 5 to 2 0 Nominal Outer diameter Thickness diameter mm mm 1 4 6 35 0 8 3 8 9 52 0 8 1 2 12 70 0 8 5 8 15 88 1 0 Dimension mm A B C...

Page 11: ...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 Outer diameter Thickness diameter mm mm 1 4 6 35 0 8 3 8 9 52 0 8 1 2 12 70 0 8 5 8 15 88 1 0 3 4 19 05 1 0 ...

Page 12: ...e tools exclusive for R410A and their interchangeability Tools exclusive for R410A The following tools for R410A are required Tools whose specifications are changed for R410A and their interchangeability Note 1 When flaring is carried out for R410A using the conventional flare tools adjustment of projection margin is necessary For this adjustment a copper pipe gauge etc are necessary Note 2 Chargi...

Page 13: ...e 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 according to the fo...

Page 14: ...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 strength...

Page 15: ...ux 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 i...

Page 16: ...Grille Inlet 132 150 200 222 200 278 525 Drain hose 0 5m Hanger Hanger Connecting pipe 0 39m Flare 6 35 Flare 12 70 Connecting pipe 0 49m 786 262 5 262 5 235 215 215 235 320 6 5 40 47 85 6 5 40 23 109 215 5 153 5 Hanger Installation plate outline Hanger Hanger Outline of indoor unit For stud bold 6 For stud bold 8 10 Center line 63 Remote controller holder 17 5 149 57 Wireless remote controller 17...

Page 17: ...ide Flare 6 35 Ø Flare 12 7 Gas side Service port 2 11 x 14 Long holes For 8 10 anchor bolt Installation dimension Air outlel 100 or more 100 or more 600 or more 600 or more Air intlel Ø Ø Ø Ø6 hole 86 Ø6 hole Ø11x14 hole R15 28 A 320 R5 5 36 108 125 50 137 92 5 4 600 320 90 600 90 275 290 550 Ø 436 Z R15 50 36 2 320 342 69 2 R5 5 x 17L Ushape For 8 10 anchor bolt FILE NO SVM 12070 ...

Page 18: ... L 3 2 1 N Power Supply From Main Line 4 3 1 2 6 6 1 1 3 3 5 5 4 4 1 1 3 3 5 5 4 4 2 2 2 4 5 3 1 2 4 5 3 1 1 2 3 2 1 1 2 2 2 1 1 2 1 4 6 1 3 2 5 3 1 3 1 9 2 3 7 8 6 5 4 10 1 11 9 2 3 7 8 6 5 4 10 1 11 4 4 5 6 6 5 8 8 7 7 2 3 3 2 1 9 9 10 10 11 1 11 2 2 3 3 4 4 1 1 1 1 4 4 3 3 2 2 2 1 2 1 1 1 2 2 3 3 4 4 SHEET METAL WHI YEL YEL YEL YEL Line WP 027 Wireless Unit Assembly Main P C Board MCC 5045 Filt...

Page 19: ...p sensor TO sensor Heat exchanger temp sensor TE sensor Model name CH 57 Z T ICF 140 43 4R Inverter attached Inverter attached Inverter attached Inverter attached L 10mH 16A 50Hz DC140V 43W 10kΩ 25 C 62kΩ 20 C 3 3kΩ 100 C 10kΩ 25 C 10kΩ 25 C 7 8 9 10 DA150A1F 20F CAM MD12TCTH 5 Rating 20A AC250V 3 phases 4 poles 1100W DC12V AC220 240V 50 60Hz Terminal block 5P Compressor Coil for PMV Coil for 4 wa...

Page 20: ...eat exchanger Cross flow fan Sectional shape of heat insulator Allowable height difference 10m Allowable pipe length P Pressure measurement Gauge attaching port Vacuum pump connecting port Strainer Pulse Modulating valve at liquid side CAM BD16TCTH 2 TD 4 way valve STF 0108 Z Compressor DA131S1B 31FZ Propeller fan Refrigerant amount 1 40kg OUTDOOR UNIT TC TA Outdoor heat exchanger Split capillary ...

Page 21: ... position Refrigerant flow Cooling Refrigerant flow Heating OUTDOOR UNIT INDOOR UNIT T1 Temp measurement Indoor heat exchanger Cross flow fan TC TA Deoxidized copper pipe Outer dia 12 7mm Thickness 0 8mm Sectional shape of heat insulator P Pressure measurement Gauge attaching port Vacuum pump connecting port Deoxidized copper pipe Outer dia 6 35mm Thickness 0 8mm TD 4 way valve STF 0213 Z Compress...

Page 22: ... Tempeature Standard Heat exchanger Indoor Outdoor Compressor condition C pressure pipe temp fan mode fan mode revolution Indoor Outdoor P MPa T1 C T2 C rps 20 15 7 6 18N3KVR E 2 5 to 2 6 40 to 42 1 to 3 79 22N3KVR E 2 6 to 2 8 42 to 44 0 to 2 84 NOTES 1 Measure surface temperature of heat exchanger pipe around center of heat exchaner path U bent Thermistor themometer 2 Connecting piping condition...

Page 23: ...otor Starting Control Processing Temperature Processing Timer Serial Signal Communication Clean Function Heat Exchanger Sensor Tc Room Temperature Sensor Ta Infrared Rays Signal Receiver and Indication Initializing Circuit Power Supply Circuit Converter D C circuit Noise Filter Clock Frequency Oscillator Circuit M C U From Outdoor Unit 220 240V 50Hz 220 230V 60Hz Serial Signal Transmitter Receiver...

Page 24: ...Indoor unit send receive circuit Noise Filter MCC5009 P C B 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 PMV control Discharge temp control 4 way valve control Signal communication to indoor unit PMV Pulse Motor Valve M C U Micro Control Unit Ou...

Page 25: ...or 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 PMV control 4 way valve control Detection of inverter input current and current release operation Over current detection and prevention operation to IGBT module Compressor stop function Compres...

Page 26: ...peration 35 10 Temporary operation 36 11 Discharge temperature control 36 FILE NO SVM 12070 12 Pulse motor valve PMV control 37 13 Self Cleaning function 38 14 Remote Controller A or B selection 39 15 QUIET mode 40 16 COMFORT SLEEP 40 17 Short Timer 40 18 One Touch Comfort 41 19 Hi POWER Mode 41 20 FILTER Indicator 41 9 3 Auto Restart Function 9 3 1 How to Set the Auto Restart Function 42 9 3 2 Ho...

Page 27: ...ation select COOL HEAT AUTO DRY Temperature setup Air direction Swing Air volume select AUTO LOW LOW MED MED HIGH ECO COMFORT SLEEP ON timer setup QUIET OFF timer setup PRESET Hi POWER ONE TOUCH Indoor unit control Command signal generating function of indoor unit operation Calculation function temperature calculation Activation compensation function of indoor fan Cold draft preventive function Ti...

Page 28: ...led in order to prevent lowering of the room temperature and to avoid air flow from blowing directly to persons Description 1 Detects the room temperature Ta when the operation started 2 Selects an operation mode from Ta in the left figure 3 Fan operation continues until an operation mode is selected 4 When AUTO operation has started within 2 hours after heating operation stopped and if the room t...

Page 29: ...to L L M M or H on the remote controller the operation is performed with the constant speed shown in Fig 1 2 When setting the fan speed to AUTO on the remote controller revolution of the fan motor is controlled to the fan speed level shown in Fig 2 and Table 1 according to the setup tempera ture room temperature and heat exchanger temperature Fig 1 FILE NO SVM 12070 Table 1 Indoor fan air flow rat...

Page 30: ...nt speed shown in Fig 3 and Table 1 2 When setting the fan speed to AUTO on the remote controller revolution of the fan motor is controlled to the fan speed level shown in Fig 5 according to the set temperature and room temperature 3 Min air flow rate is controlled by temperature of the indoor heat exchanger Tc as shown in Fig 4 4 Cold draft prevention the fan speed is controlled by temperature of...

Page 31: ...the fan is locked 4 According to each operation mode by the conditions of outdoor temperature To and compressor revolution the speed of the outdoor fan shown in the table is selected In cooling operation Compressor speed rps To To To During ECO QUIET and comfort sleep When To is abnormal 22 1 50 3 50 3 MIN MAX MIN MAX MIN MAX f 6 f 9 f 8 f B f A f E f 5 f 9 f 7 f B f 9 f E f 3 f 7 f 5 f 9 f 7 f B ...

Page 32: ...uit of the compressor speed so that electric power of the compressor drive circuit does not exceed the specified value Description 1 The difference between set temperature on remote controller Ts and room temperature Ta is calculated 2 According to the temperature difference the correction value of Hz signal which determines the compressor speed is set up 3 The rotating position and speed of the m...

Page 33: ...emperature and controls the compressor speed so that temperature of the heat exchanger does not exceed the specified value Description 1 When temperature of the indoor heat exchanger drops below 5 C the compressor speed is re duced P zone 2 When temperature of the indoor heat exchanger rises in the range from 6 C to under 7 C the compressor speed is kept Q zone 3 When temperature of the indoor hea...

Page 34: ...s 1 Stop operation of the compressor for 20 seconds 2 Invert ON 4 way valve 10 seconds after stop of the compressor 3 The outdoor fan stops at the same time when the compressor stops 4 When temperature of the indoor heat exchanger becomes 38 C or lower stop the indoor fan Finish of defrost operation Returning conditions from defrost operation to heating operation 1 Temperature of outdoor heat ex c...

Page 35: ... mode COOL HEAT The set louver position is stored in memory by the microcomputer and the louver returns to the stored position when the next operation is performed Cooling heating memory position The angle of the louver is indicated as the horizontal angle is 0 1 Louver position in cooling operation 2 Louver position in heating operation Swing operation is performed in width 35 with the stop posit...

Page 36: ...Max FAN Min Hz Fan speed depend on presetting and can change every speed 6 5 6 0 5 5 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0 5 TSC 0 5 1 0 2 0 A B C A B C 0 5 0 1 0 1 5 2 0 2 5 3 0 4 0 5 0 5 5 11 0 11 5 Room temp Set temp Compressor speed 0Hz A zone aHz B zone a to cHz C zone cHz 30 minutes Time FILE NO SVM 12070 12 DRY max COOL min 6 5 COOL min 11 DRY max COOL min 6 4 COOL min 10 DRY max COOL min 6...

Page 37: ...re Pi sound is heard and the temporary COOL operation starts 4 If the filter lamp goes on push RESET button to go off the filter lamp and then push RESET button again 5 To stop the temporary operation push the button again FILE NO SVM 12070 11 Discharge temperature control Td value 117 C 112 C 108 C 105 C 98 C Control operation Judges as an error and stops the compressor Reduce the compressor spee...

Page 38: ...e open degree of valve by super heat amount SH control 3 If the discharge temperature was excessively up adjust the open degree of valve so that it is in the range of set temperature Discharge temp control 4 When defrost operation is performed the open degree of valve is adjusted according to each setup conditions during preparation for defrost or during defrost operation 4 way valve is inversed 5...

Page 39: ...specified period based on duration of the operation which was performed prior to the shutdown after which the Self Cleaning operation stops The Self Cleaning operation is not performed after a heating operation 2 Operation 1 When the stop signal from the remote controller or timer off function is received only the timer indicator light 2 The period of the Self Cleaning operation is determined by t...

Page 40: ...no A setting display Setting the remote controller To separate using of remote controller for each indoor unit in case of 2 air conditioner are installed nearly Operation display FCU fan FCU louver Timer display Compressor CDU fan ON ON rpm is depend on presetting OPEN ON or OFF depend on presetting of timer function ON or OFF depend on presetting per room temperature ON or OFF depend on presettin...

Page 41: ...eat pushing to select the hours 1hr 3hr 5hr or 9hr If the COMFORT SLEEP button is pushed again means cancel comfort sleep mode Heating mode The preset temperature will drop down as shown on ECO operation Item No 9 Push the COMFORT SLEEP button to choose the operating hours Repeat pushing to setect the hours 1hr 3hr 5hr or 9hr If the COMFORT SLEEP button is pushed again means cancel comfort sleep m...

Page 42: ...n Auto Cooling or Heating operation Hi POWER mark is indicated on the display of the remote controller and the unit operates as follows 1 Automatic operation The indoor unit operates in according to the current operation 2 Cooling operation The preset temperature drops 1 degree The value of the preset temperature on the remote controller does not change The indoor unit s fan speed level increases ...

Page 43: ...tally shut down When the unit is stand by Not operating When the unit is in operation Operation Push RESET button for more than three 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 three seconds The unit beeps three times The green indicator flashes for 5 seconds If the unit is required...

Page 44: ...ESET button once more or use the remote controller to turn it off When the system is operating Operation Push RESET button for more than three 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 three seconds The unit beeps three times If the unit is required to operate at this time push RES...

Page 45: ...ontrol 9 4 1 Remote Controller and Its Functions Note The provided Remote Controller is a wireless type which also can be used as a wire Please see How to Connect The Remote Controller for Wired Operation located in installation instruction in case of wired control is required In wire operation remote controller will return to initial condition PRESET TIMER and CLOCK will return to initial conditi...

Page 46: ...lashing 1 1 2 3 2 3 3 4 Daily timer allows the user to set both the ON OFF timers and will be activated on a daily basis Setting Daily Timer During the daily timer is activation both arrows are indicated or Note Keep the remote control in accessible transmission to the indoor unit otherwise the time lag of up to 15 minutes will occur The setting will be saved for the next same operation MODE HiPOW...

Page 47: ...mp blink 5 time sec for 5 seconds Do not operate ON timer and OFF timer 2 Press 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 12 QUIET OPERATION To operate at super low fan speed for quiet operation except in DRY mode Press Start and stop the operation Note Under certain conditions QUIET operation may not p...

Page 48: ...operation starts Push the Hi POWER button to start and push it again to stop the operation 8 PRESET indicator Flashes for 3 seconds when the PRESET button is pushed during operation The mark is shown when holding down the button for more than 3 seconds while the mark is flashing Push another button to turn off the mark 9 ECO indicator Indicates when the ECO is in activated Push the ECO button to s...

Page 49: ...ft Right Rear right Left Bottom right Rear left Bottom left Insulate the refrigerant pipes separately with insulation not together 8 mm thick heat resisting polyethylene foam 8 Flat head wood screw 3 Batteries 2 Wireless remote control 4 Remote control holder 8 Flat head wood screw 9 Flat head wood screw 10 Battery cover A B C D Vinyl tape Apply after carrying out a drainage test Saddle Extension ...

Page 50: ... NO SVM 12070 10 2 1 Optional installation parts Fixing bolt arrangement of outdoor unit Part Code A B C Q ty One each 1 One each Parts name Refrigerant piping Liquid side 6 35 mm Gas side 12 70 mm Pipe insulating material polyethylene foam 8 mm thick Putty PVC tapes 10 2 Optional Parts Accessories and Tools If it is necessary to drain the defrost water attach drain nipple 9 and cap water proof 10...

Page 51: ... holder x 1 Filter x 1 Part No 4 5 6 Part No Others Name Owner s manual Installation manual Part name Q ty 11 Pure Air Purifier x 1 Battery cover x 1 7 10 Mounting screw 4 x 25 s x 6 Flat head wood screw 3 1 x 16 s x 2 Flat head wood screw 3 1 x 25 s x 1 Screw 4 x 10 s x 2 8 9 12 13 The part marked with asterisk is packaged with the outdoor unit Drain nipple x 1 Cap water proof x 2 ...

Page 52: ... 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 53: ...pipe hole brim ring sold separately Mounting the installation plate Fig 10 3 2 m from the right side edge is e center of pipe hole 35 120 180 240 23 mm 65 mm The center of the pipe hole is above the arrow Pipe hole Fig 10 3 1 Fig 10 3 3 FILE NO SVM 12070 5 4 45 5 7 Top view Reception range Remote control Remote control Side view Indoor unit I ndoor unit R e c e p t i o n r a n g e To unit out line...

Page 54: ...irection FILE NO SVM 12070 l 10 3 3 Wiring Connection How to connect the connecting cable Wiring the connecting cable can be carried out without removing the front panel 1 Remove the air inlet grille Open the air inlet grille upward and pull it toward you 2 Remove the terminal cover and cord clamp 3 Insert the connecting cable according to the local rule into the pipe hole on the wall 4 Take out t...

Page 55: ...ller by sliding down and take it out 2 If batteries are exist please take them out The combination of using wire controller and batteries may cause of batteries explosion 3 Make hole for insert control wire by use screwdriver break the polyester sheet as shown on figure 7 4 Insert control wire from rear side of remote controller as shown on figure 8 5 Fix control wire which arrange as shown on fig...

Page 56: ...hanging drain hose For leftward connection bottom leftward connection and rear leftward connection s piping it is necessary to change the drain hose and drain cap How to remove the drain cap Clip the drain cap by needle nose pliers and pull out Fig 10 3 13 C Die cutting front panel slit Changing drain hose Piping preparation Rear right Rear left Bottom left Left Bottom right Right 1 Die cutting fr...

Page 57: ...pipe so that it is laid within 43 mm above the wall surface If the connecting pipe is laid exceeding 43 mm above the wall surface the indoor unit may unstably be set on the wall When bending the connecting pipe make sure to use a spring bender so as not to crush the pipe Refer to the table below for the bending radius of each connection pipe Fig 10 3 19 NOTE If the pipe is bent incorrectly the ind...

Page 58: ...ing the indoor unit onto the wall hook it at the lower part on the installation plate Pull the indoor unit toward you to confirm that it is firmly hooked on the installation plate For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing its bottom up at the specified parts Push Push Push unhook 1 Installation plate Hook here 2 Hook 1 Fig 10 3 22 Fig 1...

Page 59: ...ge can result in dew dropping This air conditioner has the structure designed to drain water collected from dew which forms on the back of the indoor unit to the drain pan Therefore do not store the power cord and other parts at a height above the drain guide Space for pipes Wall Drain guide Fig 10 3 26 ...

Page 60: ...use a double stacked design To protect the outdoor unit from snow accumulation install a holding frame and attach a snow protection CAUTION 1 Insall the outdoor unit in a location where there are no obstructions near its air intake or air outlet 2 When the outdoor unit is installed in a place that is always exposed to strong wind like on the coast or on a high story of a building secure the normal...

Page 61: ...e the refrigerant in the outdoor unit For details see the manual of the vacuum pump Using a vacuum pump Be sure to use a vacuum pump with counter flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops 1 Connect the charge hose from the manifold valve to the service port of the packed valve at gas side 2 Connect the charg...

Page 62: ... CAUTION 10 4 5 Wiring connection 1 Remove the valve cover the electric parts cover and the cord clamp from the oudoor unit 2 Connect the connecting cable to the terminal as identified by the matching numbers on the terminal block of indoor and outdoor unit 3 Insert the power cord and the connecting cable carefully into the terminal block and secure it tightly with screws 4 Use vinyl tape etc to i...

Page 63: ...over Check places for indoor unit Flarenut connection 10 5 2 Remote Control A B Selection When two indoor units are installed in the same room or adjacent two rooms if operating a unit two units may receive the remote control signal simultaneously and operate In this case the operation can be preserved by setting either one remote control to B setting Both are set to A setting in factory shipment ...

Page 64: ...e the power failure Information The product was shipped with Auto Restart function in the off position Turn it on as required How to set the auto restart 1 Press and hold the RESET button on the indoor unit 3 seconds to set the operation 3 beep sound and OPERATION lamp blink 5 time sec for 5 seconds 2 Press and hold the RESET button on the indoor unit for 3 seconds to cancel the operation 3 beep s...

Page 65: ...may be caused in case 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 Pri...

Page 66: ...n damage to the components Do 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 DC280 to 380V remains and discharging takes a lot of time After turning off the power source if touch...

Page 67: ...d 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 In HEAT mode the compressor motor speed does not increase up to the maxi mum speed or decreases before the temperature arrives at the set temperature Description The OPERATION lamp of the indoor uni...

Page 68: ...eration 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 5 Hz Protective circ...

Page 69: ... there is no fault with a code the indoor 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 3 1 Press ON or OFF button to change the check code backward If there is a fault the indoor unit will beep for 10 seconds Beep B...

Page 70: ...oom 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 and its sensor of the i...

Page 71: ...or 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 or high pressure Che...

Page 72: ...en error is detected Flashes when trouble is detected on return serial signal and normal status when signal is reset Displayed when error is detected Displayed when error is detected Displayed when error is detected Judgment and action Even if trying operation again all operations stop immediately Replace P C board 1 Even if connecting lead wire of compressor is removed position detect circuit err...

Page 73: ...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 Can see infrared r...

Page 74: ...connector CN31 Check this condition within 15 seconds after starting unit Start to operate the indoor unit in except heating operation 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 CN...

Page 75: ...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 A B FILE NO S...

Page 76: ... 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 After Fan motor operate...

Page 77: ...n 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 check Check that A o...

Page 78: ... 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 after operation started Ch...

Page 79: ...ssure 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 cont...

Page 80: ...oard Micro switch is stuck Micro switch malfunction To item Power supply is not turned on Replace the main P C board MCC5045 Replace micro switch Does the PURE indicator go off within 2 seconds after it was ON and does the FILTER indicator Orange go on Are the electric dust collector and ionizer dried Electrode check Dry the electric dust collector and ionizer Is DC 5V to DC 10V applied between Br...

Page 81: ... opened Is there conduction of micro switch connector under ON status of the micro switch Front panel closed Does the indoor fan rotate Does the PURE indicator Blue or the FILTER indicator Orange go on Is DC12V applied between Red DC12V and Brown GND of CN1 of the high voltage generator in the air purifier Micro switch is stuck Micro switch malfunction To item Power supply is not turned on Replace...

Page 82: ... 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 83: ...300 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 NO NO YES NO FILE NO SVM 12070 82 ...

Page 84: ...emoving the front panel or 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 11 8 2 How to shorten time for start the compressor 1 Turn on remote 2 Setting requirment operati...

Page 85: ...20 30 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 12070 ...

Page 86: ...each winding by using the tester Under 20 C Measure the resistance value of winding by using the tester Under 20 C Measure the resistance value of winding by using the tester Under 20 C Measure the resistance value of winding by using the tester Under 20 C Disconnect the connector and measure resistance value with the tester Normal temperature Temperature Sensor TD kΩ TO TS TE kΩ 10 C 20 C 25 C 30...

Page 87: ...al 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 500µF 400V or 760µF 400V 1 Turn OFF the power supply breaker 2 Completely discharge the four electrolytic capacitors 3 Remove the diode block from the P C board which is s...

Page 88: ...he outdoor fan motor 4 Motor drive circuit failure of the outdoor 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...

Page 89: ...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 90: ...ly onto the claws on the back body and secure it using the fixing screw Now attach the display unit Connect the connectors for the fan motor and louver motor 2 Secure the grounding wire using the fixing screw Insert the TC sensor into the sensor holder Be absolutely sure to loop the grounding wire and TC sensor leads once at the bottom 5 Disengage the display unit by simply pushing at the top of t...

Page 91: ...zontal louver leftward Evaporator Heat exchanger 1 Follow to the procedure in the item 2 Remove the pipe holder from the rear side of the main unit 3 Remove two fixing screws at the left side of the end plate of the heat exchanger Remarks 4 Remove two fixing screw on the heat exchage fixing holder to separate the heat exchage from the back body Screw Screw 2 Screws FILE NO SVM 12070 ...

Page 92: ...screws used to secure the bearing base 3 Remove the bearing base Caution at assembling If the bearing is out from the housing push it into the specified position and then incorporate it in the main body Remarks Two screws Bearing Bearing base Two screws Bearing Bearing base FILE NO SVM 12070 ...

Page 93: ...rew 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 12070 ...

Page 94: ... from wall of rear plate of the main unit Holding the set screw install the cross flow fan so that U groove of the fan motor comes to the mounting hole of the set screw Perform positioning of the fan motor as follows When assembling the fan motor the fan motor must be installed in such a way that the fan motor leads will be taken out is positioned at the bottom front After assembling the two fixin...

Page 95: ...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 96: ...e the indoor unit 2 Attach the upper cabinet ST1TØ4 10L 5 pcs 3 Perform cabling of connecting cable and attach the cord clamp Fix the cord clamp by tightening the screws ST2T 4 x 14L 3 pcs fitting 2 concave parts of the cord clamp to each connecting cables 4 Attach the valve cover ST1T 4 x 10L 2 pcs Insert the upper part into the square hole of the side cabinet set hook claws of the valve cover to...

Page 97: ...t is fitted into the side cabinet left at the front left side so pull up the top of the front cabinet to remove it 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 wer...

Page 98: ... This capacitor 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...

Page 99: ...must 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 ...

Page 100: ...d heat exchanger Remarks Detail A Detail B Detail C 1 Perform work of item 1 of and 2 Remove the flange nut fixing the fan motor and the propeller Flange nut is loosened by turning clock wise To tighten the flange nut turn counterclockwise 3 Remove the propeller 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 do...

Page 101: ...sor from the terminal 6 Remove pipe connected to the compressor with a burner Remarks Reactor 1 Perform work of item 1 of and 2 Remove screws fixing the reactors 7 Remove the fixing screw of the bottom plate and heat exchanger ST1TØ4 10L 1 pc 8 Remove the fixing screw of the bottom plate and valve fixing plate ST1TØ4 10L 1 pc 9 Pull upward the refrigeration cycle 10 Remove NUT 3 pcs fixing the com...

Page 102: ... Detachment 1 Perform work of item 1 of 2 Remove the front cabinet and put it down so that fan guard side directs downward Perform work on a corrugated cardboard cloth etc to prevent flaw to the product 3 Remove the hooking claws by pushing minus screwdriver according to the arrow mark in the right figure and remove the fan guard 2 Attachment 1 Insert claws of the fan guard in the holes of the fro...

Page 103: ...t of the discharge pipe TO sensor Outside air temperature sensor Attachment Insert the outdoor air temperature sensor into the holder and install the holder onto the heat exchanger Procedure Remarks CAUTION During the installation work and on its completion take care not to damage the coverings of the sensor leads on the edges of the metal plates or other parts It is dangerous for these coverings ...

Page 104: ...em 9 Wind the attached color tape round the both terminals of the protective tube when colored protective tube is used 10 Fix the sensor again Remarks 1 2 3 4 5 6 Parts name Sensor Sensor Spring A Sensor Spring B Thermal constringent tube Color tape Terminal Q ty 1 1 1 3 1 3 Cutting here Cutting here Cutting here Soldered part Dryer Winding the color tape 100 200 Connector Thermal sensor part Ther...

Page 105: ...308 SENSOR HEAT EXCHANGER 407 43T69723 PC BOARD ASSY RAS 18N3KVR E 402 43T60331 TERMINAL 3P 407 43T69724 PC BOARD ASSY RAS 22N3KVR E 403 43T69320 TEMPERATURE SENSOR 411 43T51308 SWITCH ASSY MICRO 404 43T62003 CORD CLAMP 412 43T21434 STEPPING MOTOR 405 43T6V317 PC BOARD ASSY WRS LED 413 43T60386 MOTOR CORD Description Description ...

Page 106: ...RAS 18N3KVR E 206 43T83305 HOLDER REMOTE CONTROL 227 43T44031 EVAPORATOR ASSY 207 43T82008 PLATE INSTALLATION RAS 22N3KVR E 208 43T69499 UNIT ELECTRIC PURIFIER 228 43T09481 GRILLE ASSY SUB TOSHIBA 209 43T19333 HOLDER SENSOR 229 43T80331 FILTER AIR 210 43T49043 HOLDER PIPE 230 43T00585 FRONT PANEL ASSY 212 43T39021 BASE BEARING 231 43T80020 GENERATOR ASSY HV 218 43T79313 CAP DRAIN 232 43T62031 COVE...

Page 107: ...70 VALVE 4WAY 9 43T43451 CONDENSER ASSEMBLY RAS 22N3AV E RAS 18N3AV E 27 43T63320 4 WAY VALVE COIL ASSEMBLY 9 43T43452 CONDENSER ASSEMBLY RAS 18N3AV E RAS 22N3AV E 27 43T63334 ASM COIL 4WAY 10 43T46358 VALVE PACKED 6 35 DIA RAS 22N3AV E 11 43T46355 VALVE PACKED 12 7 DIA H4 28 43T63319 HOLDER SENSOR 12 43T47331 BONNET 6 35 DIA 29 43T79305 DRAIN NIPPLE 13 43T47333 BONNET 12 70 DIA 30 43T39333 MOTOR ...

Page 108: ...S 18N3AV E Location Part Location Part No No No No 701 43T62320 HEATSINK 705 43T60377 TEMPERATURE SENSOR 702 43T69943 PC BOARD 706 43T50304 SENSOR HEAT EXCHANGER 703 43T60392 TERMINAL 5P 707 43T62313 BASE PLATE PC 704 43T60326 FUSE Description Description ...

Page 109: ...S 22N3AV E Location Part Location Part No No No No 701 43T62331 HEATSINK 705 43T60377 TEMPERATURE SENSOR 702 43T69881 PC BOARD 706 43T50304 SENSOR HEAT EXCHANGER 703 43T60392 TERMINAL 5P 707 43T62313 BASE PLATE PC 704 43T60326 FUSE Description Description ...

Page 110: ...TOSHIBA CARRIER THAILAND CO LTD ...

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Toshiba RAS-18N3AV-E, Service Manual

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