Toshiba RAS-10GAV-E2 Service Manual Download Page 83

Page: 83 / 96

FILE NO. SVM-05027

– 82 –

1) Turn the power supply off to stop the operation

of air conditioner.

2) Remove the front panel.

•

Remove the 4 fixing screws.

3) Remove the electrical part base.

Common
procedure

11-2. Microcomputer

Replace the thermal fuse, terminal
block, microcomputer ass’y and the
P.C. board ass’y

<P.C. board layout> (For 13NKV)

No.

Part name

Procedures

Remarks

Top View

Summary of Contents for RAS-10GAV-E2

Page 1: ...FILE NO SVM 05027 1 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS 13NKV E RAS 13NAV E RAS 13NKV A RAS 13NAV A June 2005 RAS 16NKV E RAS 16NAV E RAS 16NKV A RAS 16NAV A ...

Page 2: ...door Unit For 16NKV 5 SPECIFICATION OF ELECTRICAL PARTS 5 1 Indoor Unit For 13NKV 5 2 Indoor Unit For 16NKV 6 REFRIGERANT CYCLE DIAGRAM 6 1 Refrigerant Cycle Diagram 6 2 Operation Data 7 CONTROL BLOCK DIAGRAM 7 1 Indoor Unit 7 2 Outdoor Unit Inverter Assembly 8 OPERATION DESCRIPTION 8 1 Outlined of Air Conditioner Control 8 2 Description of Operation Circuit 8 3 Temporary Operation 8 4 Auto Restar...

Page 3: ...e 1C Miswiring in indoor outdoor units and 1E 10 7 How to Diagnose Trouble in Outdoor Unit 10 8 How to Check Simply the Main Parts 10 9 How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 11 HOW TO REPLACE THE MAIN PARTS 11 1 Indoor Unit 11 2 Microcomputer 11 3 Outdoor Unit 12 EXPLODED VIEWS AND PARTS LIST 12 1 Indoor Unit E Parts Assy 12 2 Indoor Unit 12 4 Outdoor Unit For 16NAV 12 5 Out...

Page 4: ...Cooling Heating Piping connection Type Indoor unit Liquid side Gas side Outdoor unit Liquid side Gas side Maximum length Per unit Maximum chargeless length Maximum height difference Refrigerant Name of refrigerant Weight Wiring connection Power supply Interconnection Usable temperature range Indoor Cooling Heating C Outdoor Cooling Heating C RAS 13NKV E A RAS 13NAV E A Indoor kW kW kW kW A W A W d...

Page 5: ... connection Type Indoor unit Liquid side Gas side Outdoor unit Liquid side Gas side Maximum length Per unit Maximum chargeless length Maximum height difference Refrigerant Name of refrigerant Weight Wiring connection Power supply Interconnection Usable temperature range Indoor Cooling Heating C Outdoor Cooling Heating C RAS 16NKV E A RAS 16NAV E A Indoor kW kW kW kW A W A W dB A dB A dB A mm mm mm...

Page 6: ...100 95 90 85 80 75 70 65 60 55 50 32 34 36 38 40 42 33 35 37 39 41 43 Outdoor temp C Capacity ratio Conditions Indoor DB27 C WB19 C Indoor air flow High Pipe length 5m Current Limited Start Cooling Heating 0 2 4 6 8 10 0 20 40 60 80 100 120 Compressor speed rps Current A 13NAV 16NAV Conditions Indoor DB 20 C Outdoor DB 7 C WB 6 C Air flow High Pipe lenght 5 m Voltage 230V 0 2 4 6 8 10 0 20 40 60 8...

Page 7: ...n in Table 2 2 1 Never use copper pipes thinner than 0 8 mm even when it is available on the market 2 REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC R410A which does not damage the ozone layer The working pressure of the new refrigerant R410A is 1 6 times higher than conventional refrigerant R22 The refrigerating oil is also changed in accordance with change of refrigerant s...

Page 8: ...hat a clamp bar and copper pipe have been cleaned By means of the clamp bar perform the flare processing correctly Use either a flare tool for R410A or conventional flare tool Flare processing dimensions differ according to the type of flare tool When using a conventional flare tool be sure to secure dimension A by using a gauge for size adjustment Fig 2 2 1 Flare processing dimensions 2 2 2 Proce...

Page 9: ...0 to 2 0 5 8 15 88 1 0 0 to 0 5 0 5 to 1 0 1 0 to 2 0 Table 2 2 4 Dimensions related to flare processing for R22 Nominal diameter Outer diameter mm Thickness mm Flare tool for R410A clutch type Dimension mm A B C D 1 4 6 35 0 8 9 1 9 2 6 5 13 17 3 8 9 52 0 8 13 2 13 5 9 7 20 22 1 2 12 70 0 8 16 6 16 0 12 9 23 26 5 8 15 88 1 0 19 7 19 0 16 0 25 29 Table 2 2 5 Flare and flare nut dimensions for R410...

Page 10: ... nut may crack and may be made non removable When choosing the tightening torque comply with values designated by manufacturers Table 2 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 Tightening torque of torque Nominal Outer di...

Page 11: ...e used with for R410A equipment can conventional refrigerant be used 1 Flare tool Pipe flaring Yes Note 1 2 Copper pipe gauge Flaring by for adjusting projection conventional flare Yes Note 1 Note 1 margin tool 3 Torque wrench Connection of Yes For 12 70 flare nut 4 Gauge manifold 5 Charge hose 6 Vacuum pump adapter Vacuum evacuating Yes 7 Electronic balance for Refrigerant charge Yes refrigerant ...

Page 12: ...ter does not return Set the refrigerant cylinder to the electronic balance connect the connecting hose to the cylinder and the connecting port of the electronic balance and charge liquid refrigerant For refrigerant charging see the figure below 1 Never charge refrigerant exceeding the specified amount 2 If the specified amount of refrigerant cannot be charged charge refrigerant bit by bit in COOL ...

Page 13: ... 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 do not use it for refrigerant pipes 1 Phosphor bronze brazing filler tends to react with sulfur and produce a f...

Page 14: ...ical knowledge it must be performed by a person qualified In order to prevent the oxide film from occurring in the pipe interior during brazing it is effective to proceed with brazing while letting dry Nitrogen gas N2 flow Never use gas other than Nitrogen gas 1 Brazing method to prevent oxidation 1 Attach a reducing valve and a flow meter to the Nitrogen gas cylinder 2 Use a copper pipe to direct...

Page 15: ... Hanger Hanger Hanger Drain hose 0 54m Connecting pipe 0 43m Flare 6 35 For stud bolt 8 10 For stud bolt 6 Installation plate outline Center line Minimum distance to ceiling 170 or more Minimum distance to ceiling 170 or more 65 or more Minimum distance to ceiling Wireless remote control 57 18 160 6 64 60 60 48 6 218 48 53 Knock out system Front panel Knock out system Heat exchanger Air filter Air...

Page 16: ... Leg 600 32 5 115 125 310 302 530 265 120 75 5 4 310 302 6 Hole 436 270 600 780 90 310 330 62 30 Drain outlet FAN GUARD Z View 600 310 Installation dimension 100 or more 600 or more Air outlet Air inlet 100 or more 4 x 11 x 14 Long holes For 8 10 anchorbolt Z COVER PV 6 Hole R15 36 52 310 102 302 11 x 14 Hole 2 11 x 14 Hole For 8 10 anchor bolt A RAS 13NAV E NAV A Flare 12 7 For RAS 16NAV E NAV A ...

Page 17: ...uver motor Check the transformer and the power supply circuit of the rated voltage 2 1 3 4 5 Check the voltage at the No 1 pin on CN10 connector and CN24 Check the F01 6 AC 220 240V 1 2 2 3 MCC 861 BLK HA JEM A CN21 TERMINAL BLOCK LOUVER MOTOR FUSE T3 15A 4 3 2 1 CN08 CN24 CN13 WHI CN25 WHI INFRARED RAYS RECEIVING AND INDICATING PARTS 1 3 4 5 6 7 8 11 2 1 2 3 4 5 6 7 8 9 10 11 10 9 1 2 3 4 5 6 7 8...

Page 18: ... the transformer and the power supply circuit of the rated voltage 2 1 3 4 5 DC325V Check the voltage at the No 1 pin on CN10 connector Check the DB01 R05 and C03 6 DC310 340V 2 2 3 MCC 861 BLK POWER SUPPLY CIRCUIT DC5V DC12V HA JEM A CN21 LOUVER MOTOR LINE FILTER FUSE T3 15A 4 3 1 DC MOTOR FAN MOTOR CN08 CN24 CN13 WHI CN25 WHI INFRARED RAYS RECEIVING AND INDICATING PARTS 1 3 4 5 6 7 8 11 2 1 2 3 ...

Page 19: ...4 2 Outdoor Unit FILE NO SVM 05027 18 ...

Page 20: ...x 11 Regulator IC IC11 NJM7805 5VDC 1 5A max 12 Varistor R21 R109 15G561K 560V 13 Louver motor DC 12V LXV35VB2200MJ20 µPD780024AGK 24BYJ48 No Parts name Type Specifications 1 Fan motor for indoor ICF 340 30 2 DC 340 V 30 W 2 Thermo sensor TA sensor 10 kΩ at 25 C 3 DC DC transformer T01 SWT 70 DC 390 V Secondary DC 15 V 12 V 7 V 4 Microcomputer µPD780024AGK 5 Heat exchanger sensor 10 kΩ at 25 C TC ...

Page 21: ...or Inverter attached 62 kΩ 20 C TD sensor 7 Outside air temp sensor Inverter attached 10 kΩ 25 C TO sensor 8 Heat exchanger temp Inverter attached 10 kΩ 25 C sensor TE sensor 9 Terminal block 6P 10 Fuse For protection of switching power source 3 15A AC 250 V For protection of inverter input overcurrent 25A AC 250 V 11 Electrolytic capacitor LLQ2G761KHUBTF 760µF DC 400 V x 3 pieces 12 IGBT GT20J321...

Page 22: ...ttached 10 kΩ 25 C TS sensor 6 Discharge temp sensor Inverter attached 62 kΩ 20 C TD sensor 7 Outside air temp sensor Inverter attached 10 kΩ 25 C TO sensor 8 Heat exchanger temp Inverter attached 10 kΩ 25 C sensor TE sensor 9 Terminal block 6P 10 Fuse For protection of switching power source 3 15A AC 250 V For protection of inverter input overcurrent 25A AC 250 V 11 Electrolytic capacitor LLQ2G76...

Page 23: ...ent Indoor heat exchanger Cross flow fan Deoxidized copper pipe Outer dia 6 35 mm Thickness 0 8 mm Sectional shape of heat insulator Allowable height difference 10m Allowable pipe length Max 15 m P Pressure measurement Gauge attaching port Vacuum pump connecting port Strainer Pulse modulating valve at liquid side SEV16RC3 1 5 x 200s 1 5 x 200s TD 4 way valve CHV 0213 Compressor DA89X1F 23F TS T2 O...

Page 24: ...s flow fan Deoxidized copper pipe Outer dia 6 35 mm Thickness 0 8 mm Sectional shape of heat insulator Allowable height difference 10m Allowable pipe length Max 15 m P Pressure measurement Gauge attaching port Vacuum pump connecting port Strainer Pulse modulating valve at liquid side SEV16RC3 1 5 x 200s 1 5 x 200s TD 4 way valve CHV 0213 Compressor DA130A1F 24F TS T2 Outdoor heat exchanger Split c...

Page 25: ...perature condition C Indoor Outdoor 20 7 6 2 5 to 2 7 42 to 44 0 to 3 High High 80 Standard pressure P MPa Heat exchanger pipe temp T1 C T2 C Indoor fan mode Outdoor fan mode Compressor revolution rps Temperature condition C Indoor Outdoor 20 Temperature condition 7 6 C 2 7 to 2 9 Indoor 42 to 46 Outdoor 0 to 3 27 19 High 35 High 82 0 9 to 1 2 Standar 79 to 10 d pressure 50 to 45 P MPa High Heat e...

Page 26: ...pressor Motor Revolution Control Timer Serial Signal Communication Processing Temperature Processing Functions M C U Indoor Unit Control Panel From Outdoor Unit Remote Control Heat Exchanger Sensor Temperature Sensor Infrared Rays Signal Receiver Infrared Rays Initiallizing Circuit Clock Frequency Oscillator Circuit Louver Motor 36 7KHz Power Supply Circuit Noise Filter Filter Sign Display PRE DEF...

Page 27: ... Rotor position detect circuit Rotor position detect circuit 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 Modulating Valve M C U Micro Contr...

Page 28: ...Defrost control in heating operation Temp measurement by outdoor heat exchanger and control for 4 way valve and outdoor fan 8 OPERATION DESCRIPTION As the compressor adopts four pole brushless DC motor the frequency of the supply power from inverter to compressor is two times cycles of the actual number of revolution Operations followed to judgment of serial signal from indoor side 8 1 Outline of ...

Page 29: ...otor speed by changing AC 220 240 V power to DC once and controls capac ity by changing supply power status to the compressor with transistor module includes 6 transistors The outline of the control is as follows The revolution position and revolution speed of the motor are detected by detecting winding electromotive force of the compressor motor under operation and the revolution speed is changed...

Page 30: ...G button is pressed during running operation vertical air flow louvers start swinging When the SWING button is pushed swinging stops 8 1 7 Indoor fan control 1 The indoor fan is operated by the stepless speed change motor 2 For air flow level speed of the indoor fan motor is controlled in five steps LOW LOW MED MED and HIGH If AUTO mode is selected the fan motor speed is automatically controlled b...

Page 31: ...curred due to entering of foreign matter the air conditioner stops and an alarm is displayed COOL DRY Table 8 1 3 HEAT Table 8 1 4 Model name 13NAV and 16NAV Compressor revolution rps To 16 8 To 57 4 From 58 0 Outdoor temp sensor TO TO 5 C 390 650 840 TO 5 C 650 650 840 ECONO operation TO 5 C 390 390 650 TO 5 C 390 650 650 TO is abnormal 390 650 840 Model name 13NAV and 16NAV Compressor revolution...

Page 32: ...ompressor motor speed according to both the difference between the temperature detected by the room temperature sensor and the temperature set by TEMP button and also any change in room temperature When compressor has been activated or reactivated it operates with Max 41 rps for 2 minutes with Max 90 rps from 2 minutes to 3 minutes and with Max 88 rps after 3 minutes passed When room temperature i...

Page 33: ...up 3 Control 3 C zone Keep zone When TD detect value is 105 C or higher operating motor speed is not changed if raising operation speed 5 Control 5 E zone Nornal down of motor speed When TD detect value is 112 C or higher operating motor speed is down Zone Operation stop zone Normal down zone of motor speed Slow down of motor speed Keep zone Motor speed is not changed Slow up zone of motor speed N...

Page 34: ...s shown in Fig 8 2 1 Because of the difference between room temperature and set temperature 3 Changing of air flow Fan setting One of 5 levels When the Hi POWER is started the fan of the indoor unit operates at higher consecutive air flow level Fan speed on the display of remote control does not change 10 QUIET operation control When the QUIET button is pushed the fan is restricted the revolution ...

Page 35: ...performed The indoor fan motor operates as shown in Fig 8 2 6 Fan speed is AUTO only The outdoor fan motor operates as described in Table 8 1 3 and the compressor motor speed according to the operation command signal sent from the indoor unit NOTE 1 Middle motor speed between L and SUL Fig 8 2 6 Setting of air flow 8 2 3 Heating operation Transferring of heat operation signal from indoor unit to o...

Page 36: ...or motor The power coupler IC20 for 4 way valve is turned on and turned off in defrost operation 1 Heating capacity control Calculate the difference between temperature detected by room temp sensor every minute and the set temp set on Temp indicator and variation amount of room temp Then obtain the correction amount of the com mand signal and correct the current frequency command signal 2 High tem...

Page 37: ...rature are separated to A B and C zone Then compressor motor speed in each zone are controlled by different speed After 30 minutes passed the different value of room temperature and set temperature is separated zone again by more different value than before Then compressor motor speed after 30 minute passed is lower than before by the same different value of room temperature and set temperature Wh...

Page 38: ... operation existence of Auto Restart and Temporary Cooling operation can be set by the RESET button of the indoor controller Table 8 3 1 8 3 1 Temporary auto operation When the RESET button is pushed the Auto operation with set temperature fixed at 25 C starts Controlling is same as that of Auto opera tion by the remote controller When the RESET button is pushed again the operation stops During Te...

Page 39: ...rt function proceed as follows The power supply to the unit must be on the function will not set if the power is off Push the RESET button located in the center of the front panel continuously for three seconds The unit receives the signal and beeps three times The unit then restarts operating automatically in the event of power supply being accidentally shut down While the filter check lamp is on...

Page 40: ... filter check lamp 8 5 1 How to turn off filter check lamp Push RESET button on the indoor unit Note If RESET button is pushed while the filter check lamp is not indicating the indoor unit will start the Automatic Operation Operation Motions Push RESET button for more The unit is on standby than three seconds The unit starts to operate The orange lamp is on After approx three seconds The unit beep...

Page 41: ...ff timer button OFF Push this button to set the OFF timer On timer button ON Push this button to set the ON timer Reserve button SET Push this button to reserve setting of time ON timer or OFF timer A receiving beep is heard Cancel button CLR Push this button to cancel ON timer and OFF timer A receiving beep is heard High power button Hi POWER Push this button to start the high power operation A r...

Page 42: ...and clock time display The time set for timer operation or clock time is indicated The present time is always indicated except for TIMER operation Hi POWER display Indicates when the Hi POWER operation starts Push the Hi POWER button to start and push it again to stop the operation PRESET display Flashes for 4 seconds when the PRESET button is pushed and hold to memorize mark is indicated when PRE...

Page 43: ... for the conventional refrigerant and different size tools are also required Accordingly special tools are required for the new refrigerant R410A as shown below For connecting pipes use new and clean piping materials with high pressure withstand capabilities designed for R410A only and ensure that water or dust does not enter Moreover do not use any existing piping as its pressure withstand may be...

Page 44: ... INSTALLATION WORK IMMEDIATELY LET FRESH AIR INTO THE ROOM IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE IT CAUSES GENERATION OF POISONOUS GAS WARNING Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock switches Do not install in a place which cannot bear the weight of the unit Personal injury and property damage can result if the unit ...

Page 45: ...m left Right Rear right Bottom right Left Rear left Bottom left Gingko filte 2 Wireless remote control 8 Pan head wood screw 4 Remote control holder Before installing the wireless remote control With the remote control cover open load the batteries supplied correctly observing their polarity 2 2 2 2 2 Wireless remote control Cover 3 3 3 3 3 Batteries Insulate the refrigerant pipes separately with ...

Page 46: ...anchor bolts and nuts Parts name Refrigerant piping Liquid side 6 35 mm Gas side 9 52 mm 13 Series Pipe insulating material polyethylene foam 6 mm thick Putty PVC tapes Part Code A B C Q ty One each 1 One each Diffuser Suction side Drain hole 600 115 310 76 Gas side 12 7 mm 16 Series 10 If it is necessary to drain the defrost water attach drain nipple 9 and cap water proof to the bottom plate of t...

Page 47: ...te Plus filter x 1 Bio enzyme Ginko filter x 1 Part No 4 5 6 Part No 7 8 9 Others Name Owner s manual Installation manual Part name Q ty Mounting screw 4 x 25 s x 6 Flat head wood screw 3 1 x 16 s x 2 Drain nipple x 1 9 1 3 Accessory and installation parts The part marked with asterisk is packaged with the outdoor unit Cap water proof x 2 For Heat pump model only 10 ...

Page 48: ...t diameter has been changed In order to increase pressure resisting strength hose materials and port 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 hight 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...

Page 49: ... stove Keep the remote control at least 1 m apart from the nearest TV set or stereo equipment This is necessary to prevent image disturbances or noise interference The location of the remote control should be determined as shown below Fig 9 2 1 Top view Indoor unit Axial distance Reception range Reception range Remote control Remote control Side view 9 2 2 Cutting a hole and mounting installation ...

Page 50: ... brick concrete or similar type walls make 5 mm dia holes in the wall Insert clip anchors for appropriate mounting screws 7 NOTE Secure four corners and lower parts of the installation plate with 4 to 6 mounting screws to install it Installation plate Keep horizontal direction 9 2 3 Electrical work 1 The supply voltage must be the same as the rated voltage of the air conditioner 2 Prepare the powe...

Page 51: ... instructions or limitations 9 2 5 Piping and drain hose installation Piping and Drain Hose Forming Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material Fig 9 2 8 1 Die cutting Front panel slit Cut out the slit on the left or right side of the front panel for the left or right connection and the slit on the bottom le...

Page 52: ... a radius of 30 mm 6 35 40 mm 9 52 To connect the pipe after installation of the unit figure Fig 9 2 15 NOTE If the pipe is bent incorrectly the indoor unit may unstably be set on the wall After passing the connecting pipe through the pipe hole connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them CAUTION Bind the auxiliary pipes two and connecting cable with faci...

Page 53: ...e in the wall and hook the indoor unit on the installation plate at the upper hooks 2 Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate 3 While pressing 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 up on the installation plate Fig 9 2 17 Fo...

Page 54: ...eight level is up to 10 m A place where the drain water does not raise any problem CAUTION 1 Install the outdoor unit without anything blocking the air discharging 2 When the outdoor unit is installed in a place exposed always exposed to strong wind like a coast or on a high storey of a building secure the normal fan operation using a duct or a wind shield 3 In particularly windy areas install the...

Page 55: ...rom the service port 8 Securely tighten the caps on the packed valves Fig 9 3 7 Tightening torque of flare pipe connections The operating pressure of R410A is higher than that of R22 Approx 1 6 times It is therefore necessary to firmly tighten the flare pipe connecting sections which connect the indoor and outdoor units up to the specified tightening torque Incorrect connections may cause not only...

Page 56: ...onnecting cable Wire type More than H07RN F or 245 IEC66 1 0 mm2 or more Packed valve handling precautions Open the valve stem all the way out but do not try to open it beyond the stopper Securely tighten the valve stem cap with torque in the following table Fig 9 3 8 9 3 4 Wiring connection 1 Remove the valve cover from the outdoor unit 2 Connect the connecting cable to the terminal as identified...

Page 57: ... the same operating mode as before 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 Press and hold down the RESET button for about 3 seconds After 3 seconds the electronic beeper makes three short beeps to tell you the Auto Restart has been selected To cancel the Auto Restart follow the steps des...

Page 58: ...ed in the outdoor unit control inverter Therefore if the power supply is turned off charge charging voltage DC280V remains and discharging takes a lot of time After turning off the power source if touching the charging section before discharging an electrical shock may be caused Discharge the electrolytic capacitor completely by using soldering iron etc Discharging method 1 Remove the inverter cov...

Page 59: ...eed increases again approx 30 seconds after 5 The set value of the remote control should be below the room temperature 6 In AUTO mode the operation mode is changed 7 In HEAT mode the compressor motor speed does not increase up to the maximum speed or decreases before the temperature arrives at the set temperature No Operation of air conditioner Description The OPERATION lamp of the indoor unit fla...

Page 60: ... can be confirmed on the remote control for servicing Table 10 3 1 OPERATION Green Flashing display 1 Hz OPERATION Green TIMER Yellow PRE DEF Orange Flashing display 5 Hz OPERATION Green PRE DEF Orange Flashing display 5 Hz OPERATION Green TIMER Yellow Flashing display 5 Hz OPERATION Green Flashing display 5 Hz Protective circuit operation for indoor P C board Protective circuit operation for conn...

Page 61: ...imes per 1 sec 2 Press TIMER 8 button If there is no fault with a code the indoor unit will beep once Pi and the display of the remote control will change as follows Check the unit with all 35 check codes 00 to 22 as shown in Table 9 4 1 Press TIMER 9 button to change the check code backwards If there is a fault the indoor unit will beep for 10 seconds Pi Pi Pi Note the check code on the display o...

Page 62: ... Operation continues Displayed when error is detected Displayed when error is detected Displayed when error is detected Displayed when error is detected Flashes when trouble is detected on return serial signal and normal status when signal is reset Flashes when trouble is detected on operation command signal and normal status when signal is reset 1 Check the room temp sensor 2 When the room temp s...

Page 63: ...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 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 error occurred Replace P C board 2 Measure resistance between wires of compre...

Page 64: ...ton on remote control Does transmission mark on remote control flash normally and is its signal transmitted properly Remote control is defective Refer to 5 Remote Control Is fuse F01 of indoor control board blown Is voltage DC 12V or 5V indicated on rear of indoor control board normal Microcomputer is defective Replace main P C board Refer to Primary check or this problem is one step short of powe...

Page 65: ...P C board is replaced Confirmation procedure YES YES NO NO To item of Power is not turned on Turn on power supply Does operation lamp flash Is wired correctly to white and black lead wires of terminal board Correct wiring 64 FILE NO SVM 05027 ...

Page 66: ...ue to prevent temperature rising cause of incompleted connecting Does the cross flow fan rotate normally Is the rotation signal DC 5 V 0 V output between 2 gray lead wire and 3 brown lead wire of the motor connector CN11 when rotating the cross flow fan by hand in no operating status 1 pulse one turn Turn on the power supply Repair the bearing of the fan Turn the power supply Shut off the power su...

Page 67: ...r from motor Then press button on remote control to stop blinking lamp on indoor unit Replace indoor fan motor Replace main P C board Is it possible to detect DC 15V between 4e and 3d of motor connector CN10 Turn off indoor unit and remove connector from motor Then start to operate indoor unit with remote control Start to operate the indoor unit At this time is it possible to detect DC 1V or more ...

Page 68: ...hile the fan rotating NOTE Do not disconnect the connector while the fan rotates Use a thin tester rod Indoor fan starts rotating when power supply breaker is turned ON Check output voltage DC of the fan motor on P C board Measure the voltage of the motor connector CN10 pin 2 GND Black and pin 5 V line Yellow under condition that the indoor fan rotates Above DC 0 4V P C board is defective 5 Yellow...

Page 69: ...rate Remote control is defective Does indoor unit start to operate by automatic restart function Does radio sound is affected by remote control when a signal is transmitted at distance of 5 cm from radio P C board is defective Keep indoor unit away from thyristor fluorescent light Avoid direct sunlight Replace P C board Replace batteries Normal operation Replace remote control The unit does not be...

Page 70: ...unit stops in a little while after operation started Check procedure Select phenomena described below 1 The outdoor unit stops 10 to 20 minutes after operation started and 10 minutes or more are required to restart the unit 2 If the unit stops once it dose not operate until the power will be turned on again 3 The outdoor unit stops 10 minutes to 1 hour after operation started and an alarm is displ...

Page 71: ...e valve is clogged Is positioning sound of valve sound hitting to stopper heard from valve when the air conditioner starts the operation after turning off power of the air conditioner once NOTE After all the operations stopped by the remote control the power keeps being supplied to outdoor unit for approx 3 minutes If operating the air conditioner by remote control again just after all the operati...

Page 72: ...rd assembly is blown or not F01 Turn on power breaker and operate the air conditioner in COOL mode by short circuit of the timer Measure terminal voltage of electrolytic capacity 760µF 400WV x 3 After operation turn off the power breaker after 2 minutes 20 seconds passed and discharge the electrolytic capacity by soldering iron Check voltage between motor phases Is not winding between 1 2 2 3 or 1...

Page 73: ...check for disconnection burning or discolora tion of the copper foil pattern or this P C board 2 The P C board consists of the following 2 parts a Main P C board part DC power supply circuit 5 V 12 V 15 V Indoor fan motor control circuit CPU and peripheral circuits buzzer and Driving circuit of louver b Indication unit of infrared ray receiving Infrared ray receiving circuit LED To check defect of...

Page 74: ...ot indicate normally after approximate 3 sec 1 Compressor does not operate 2 OPERATION lamp blinks 1 Compressor does not operate 2 OPERATION lamp blinks 1 Motor does not rotate The key operation is accepted 2 The Motor rotates but it vibrates too much Shut off the power supply and remove the P C board assembly from the electronic parts base Remove the connecting cable from the terminal block Remov...

Page 75: ...icators light for 3 sec 2 Indicators do not indicate normally after approximate 3 sec Start the operation with the system which the time of the restart delay timer is shortened 3 1 Compressor does not operate 2 OPERATION lamp flashes Make the operation status by pressing once the button 1 The time of the restart delay timer is shortened 2 Cool operation 3 Air volume AUTO 4 Make the setting tempera...

Page 76: ...rature C TD Discharge temp sensor TA Room temp sensor TC Heat exchanger temp sensor TO Outdoor temp sensor TGa Gas side temp sensor TGb Gas side temp sensor TGc Gas side temp sensor TGd Gas side temp sensor TA TC TO TGa TGb TGc TGd TD Sensor characteristic table FILE NO SVM 05027 ...

Page 77: ...utdoor fan motor Model ICF 140 43 4 Sensor TA TC kΩ 20 7 12 6 10 0 7 9 4 5 5 4 3 2 1 White Yellow Yellow Yellow Yellow 5 4 3 2 1 No Part name Checking procedure White Black Red Position Resistance value 1 to 2 1 to 3 380 40Ω 1 to 4 1 to 5 Under 20 C Position Resistance value Red White White Black 0 59Ω Black Red Temperature 10 C 20 C 25 C 30 C 40 C Measure the resistance value of each winding by u...

Page 78: ... test by the tester 10 8 5 Checking Method for Each Part sjCase that product is good Pointer swings once and returns slowly When performing test once again under another polarity the pointer should return No Part name Checking procedure Soldered surface Heat sink IGBT side C12 C13 C14 3 Outdoor temperature sensor TO discharge temperature sensor TD suction temperature sensor TS outdoor heat exchang...

Page 79: ...seconds though it starts rotating Outdoor fan motor rotates or does not rotate according to the position where the fan stopped etc Remote controller check code 02 Outdoor block 1A Outdoor fan drive system error 2 Cause The following causes are considered when the outdoor fan motor does not normally rotate 1 Mechanical lock of the outdoor fan motor 2 Winding failure of the outdoor fan motor 3 Posit...

Page 80: ...ver How to remove the electrical part 1 Remove the front panel with procedure 1 2 Remove the screw holding the electrical part cover 3 Disconnect the 2 connectors 3P for the fan motor and the connector 5P for the louver motor from the P C 2 Screws board assembly 4 Pull out the TC sensor from the sensor holder 5 Remove the screw for the ground 5 4 TC Sensor 5 Screws 3 3 Connector Screws connection ...

Page 81: ...per side of the heat exchanger slowly 1 Remove the front panel and the electrical part with the procedure 2 2 Loosen the set screw of the cross flow fan 3 Remove 2 screws fixing the motor band R 4 Pull out the fan motor 4 Heat exchanger 5 Fan motor 2 Pipe holder 3 2 Screws 4 2 Screws No Part name Procedures Remarks Reference line Pull out the lead wires of the fan motor from this hole Reference li...

Page 82: ...the procedure 5 Fix the cross flow fan with the set screw at the position where the gap between the back body and the right surface of the cross flow fan is 4 5 mm 1 Remove the front panel electrical part horizontal louver heat exchanger and the cross flow fan with the procedure 5 and 6 2 Remove the 2 screws fixing the base bearing 3 Remove the bearing from the base bearing If the housing protrude...

Page 83: ...itioner 2 Remove the front panel Remove the 4 fixing screws 3 Remove the electrical part base 1 Common procedure 11 2 Microcomputer Replace the thermal fuse terminal block microcomputer ass y and the P C board ass y P C board layout For 13NKV No Part name Procedures Remarks Top View ...

Page 84: ...FILE NO SVM 05027 83 Fuse C01 T01 IC01 C02 R01 R04 CN10 C03 R05 L01 DB01 RY01 CN13 IC03 IC02 CN04 P C board layout For 16NKV Top View Top View ...

Page 85: ...part into the square hole and then fix it with screw ST1T 4 x 10s 1 pc 3 Attach the valve cover ST1T 4 x 10s 1 pc Insert the upper part to the upper cabinet set hook claw of the valve cover to square holes at three positions of the main unit and attach it pushing upward 1 Detachment 1 Perform work of item 1 of 1 2 Remove screw ST1T 4 x 10s 2 pc of the front cabinet and inverter cover and screws ST...

Page 86: ...ous that a large spark generates if short circuiting between the e e e e e d d d d d polarity with screw driver etc for discharging 4 Remove screw ST1T 4 x 10s 2 pc fixing the main body and the inverter box 5 Remove various lead wires from the holder at upper part of the inverter box and wiring holder at right side of the terminal block 6 Remove the lead wire from the bundled part at left side of ...

Page 87: ...e heat sink with hands Remove three screws fixing the heat sink and main control board assembly side and replace the board with a new one 1 Perform work of item 1 of 1 1 and 2 3 2 Remove fixed screws fixing to the bottom plate ST1T 4 x 10s 3 pcs 3 Remove fixed screws fixing to the heat exchanger ST1T 4 x 10s 2 pcs 4 Remove fixed screw fixing to the valve mounting plate ST1T 4 x 10s 1 pc 4 Control ...

Page 88: ... cover of the compressor and disconnect lead wire of the compressor thermo and the compressor from the terminal 6 Remove pipe connected to the compressor with a burner 7 Remove the fixing screw of the bottom plate and heat exchanger ST1T 4 x 10s 2 pc 8 Remove the fixing screw of the bottom plate and valve clamping plate ST1T 4 x 10s 2 pcs 9 Pull upward the refrigeration cycle 10 Remove the nut fix...

Page 89: ...ted to CN13 of the control board assembly 1 Detachment 1 Perform work of item 1 of 1 and 2 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 In...

Page 90: ...ive tube is used 10 Fix the sensor again NOTES 1 Store the joint part of the sensor and the connector in the electric parts box 2 Never joint them near the thermal sensor part Otherwise it would cause insulation inferiority because of dew drops 3 When replacing the sensor using the colored protective tube wind the color tape matching the color of that tube Replacement of temperature sensor for ser...

Page 91: ...3 402 404 401 Location Part Location Part No No No No 401 43T69319 TEMPERATURE SENSOR 405 43T69079 PC BOARD ASSY WRS LED 402 43T60002 TERMINAL BLOCK 3P 406 43T69399 PC BOARD FOR 16NKV 403 43T69320 TEMPERATURE SENSOR 406 43T69473 PC BOARD FOR 13NKV 404 43T62003 CORD CLAMP Description Description ...

Page 92: ...PING 225 43T85469 OWNER S MANUAL 210 43T44366 REFRIGERATION CYCLE ASSY FOR RAS 13 16NKV E FOR RAS 13NKV E NKV A 225 43T85470 OWNER S MANUAL 210 43T44367 REFRIGERATION CYCLE ASSY FOR RAS 13 16NKV E FOR RAS 16NKV E NKV A 225 43T85471 OWNER S MANUAL 211 43T47006 PIPE DELIVERY FOR RAS 13 16NKV E 212 43T47016 PIPE SUCTION 225 43T85472 OWNER S MANUAL 213 43T49009 SPRING FOR RAS 13 16NKV E FOR RAS 16NKV ...

Page 93: ...ED VALVE COVER ASSEMBLY 21 43T20307 FAN PROPELLER 07 43T62311 ELECTRIC PART COVER 22 43T21355 MOTOR FAN 08 43T41381 COMPRESSOR DA89X1F 23F 23 43T47001 NUT FLANGE 09 43T43355 CONDENSER ASSEMBLY 24 43T47325 BOLT COMPRESSOR M6 10 43T46308 VALVE PACKED 6 35 DIA 25 43T49308 RUBBEER CUSHION 11 43T46011 VALVE PACKED 9 52 DIA 26 43T46319 4 WAY VALVE 12 43T47331 BONNET 6 35 DIA 27 43T63304 4WAY VALVE COIL ...

Page 94: ...VALVE COVER ASSEMBLY 21 43T20307 FAN PROPELLER 07 43T62311 ELECTRIC PART COVER 22 43T21355 MOTOR FAN 08 43T41359 COMPRESSOR DA130A1F 24F 23 43T47001 NUT FLANGE 09 43T43354 CONDENSER ASSEMBLY 24 43T47325 BOLT COMPRESSOR M6 10 43T46308 VALVE PACKED 6 35 DIA 25 43T49308 RUBBEER CUSHION 11 43T46307 VALVE PACKED 12 7 DIA H4 26 43T46319 4 WAY VALVE 12 43T47331 BONNET 6 35 DIA 27 43T63304 4WAY VALVE COIL...

Page 95: ...1 704 Location Part Location Part No No No No 701 43T62320 HEATSINK FOR 13NAV 704 43T60326 FUSE 701 43T62321 HEATSINK FOR 16NAV 705 43T50305 TEMPERATURE SENSOR 702 43T69484 PC BOARD FOR 13NAV 706 43T50304 TEMPERATURE SENSOR 702 43T69485 PC BOARD FOR 16NAV 707 43T62313 BASE PLATE PC 703 43T60352 TERMINAL BLOCK 6P Description Description ...

Page 96: ...FILE NO SVM 03008 87 TOSHIBA CARRIER CORPORATION ...

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