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8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

M.C.U.

Indoor Unit Control Unit

From Outdoor Unit

Serial Signal Communication

(Operation Command and Information)

Serial Signal Transmitter/Receiver

Converter

(D.C circuit)

Noise Filter

Indoor

Fan Motor

Louver

Motor

Louver Motor

Drive Control

Indoor Fan

Motor Control

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power 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, HEAT, FAN ONLY

ECO

Hi-POWER

Heat Exchanger Sensor (TC)

Room Temperature Sensor (TA)

Infrared Rays Signal Receiver

and Indication

Functions

• Cold draft preventing Function

• 3-minute Delay at Restart for Compressor

• Fan Motor Starting Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

Operation ( )

QUIET

SLEEP (1,3,5,9 OFF TIMER)

FILE NO. SVM-10052-1

220-240V~, 50Hz / 220-230V~, 60Hz : 42NQV050M,42NQV060M,

REMOTE CONTROLLER

220-240V~, 50Hz : 42NQV050M

-A

,42NQV060M

-A

42NQV050M

,42NQV060M

Содержание 42NQV050M Series

Страница 1: ...3 SERVICE MANUAL SPLIT TYPE Indoor Unit High Wall Heat PumpType Revised May 2011 Outdoor Unit Heat PumpType 42NQV050M 42NQV060M 42NQV050M N 42NQV060M N 42NQV050M A 42NQV060M A 38NYV050M2 38NYV060M2 3...

Страница 2: ...5 WIRING DIAGRAM 18 6 SPECIFICATIONS OF ELECTRICAL PARTS 19 7 REFRIGERANT CYCLE DIAGRAM 20 8 CONTROL BLOCK DIAGRAM 22 9 OPERATION DESCRIPTION 24 10 INSTALLATION PROCEDURE 45 11 HOW TO DIAGNOSE THE TR...

Страница 3: ...rt on main unit and installation tools are different from those used for the conventional refrigerant units Accordingly special tools are required for the new refrigerant R410A units For connecting pi...

Страница 4: ...rmed by a qualified electrician in accordance with the Installation Manual Make sure the air conditioner uses an exclusive circuit An insufficient circuit capacity or inappropriate installation may ca...

Страница 5: ...h m Maximum chargeless length m Maximum height difference m Refrigerant Name of refrigerant Weight kg Wiring Power supply connection Interconnection Usable temperature range Indoor Cooling Heating C O...

Страница 6: ...mm Gas side mm Maximum length m Maximum chargeless length m Maximum height difference m Refrigerant Name of refrigerant Weight kg Wiring Power supply connection Interconnection Usable temperature rang...

Страница 7: ...m Maximum chargeless length m Maximum height difference m Refrigerant Name of refrigerant Weight kg Wiring Power supply connection Interconnection Usable temperature range Indoor Cooling Heating C Ou...

Страница 8: ...acity Ratio 100 5 0kW 42NQV050M 42NQV050M N 42NQV050M A 6 0kW 42NQV060M 42NQV060M N 42NQV060M A Condition Indoor DB27 o C WB19 o C Indoor Air Flow Volume Pipe Length 7 5m 0 20 40 60 80 100 120 15 10 5...

Страница 9: ...in the 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...

Страница 10: ...t joints Nominal diameter 1 4 3 8 1 2 5 8 Reference outer diameter of copper pipe jointed mm 6 35 9 52 12 70 15 88 Minimum joint thickness mm 0 50 0 60 0 70 0 80 3 2 2 Processing of Piping Materials W...

Страница 11: ...to 0 5 0 to 0 5 0 to 0 5 0 to 0 5 Conventional flare tool Clutch type Wing nut type 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 2 0 to 2 5 1 0 to 1 5 2 0 to 2 5 Table 3 2 4 Dimensions relat...

Страница 12: ...orque for R410A is the same as that for conventional R22 Incidentally when the torque is weak the gas leakage may occur When it is strong the flare nut may crack and may be made non removable When cho...

Страница 13: ...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 char...

Страница 14: ...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 Electroni...

Страница 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 gen...

Страница 16: ...flux 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 A...

Страница 17: ...4 CONSTRUCTION VIEWS 4 1 Indoor Unit 16 FILE NO SVM 10052 19 157 Wireless remote controller 56 26 125 63 Remote controller holder 42NQV050M 42NQV060M 42NQV050M N 42NQV060M N 42NQV050M A 42NQV060M A...

Страница 18: ...re 6 35 Gas side Service port 2 11x14 Long holes Installation dimension Air outlel 100 or more 100 or more 600 or more 600 or more Air intlel 6 hole 86 6 hole 11x14 hole R15 28 A 320 R5 5 36 108 125 5...

Страница 19: ...UCTION PIPE 1 2 1 3 3 TS PMV Q200 205 P06 BLK 2 2 CM P23 P25 P21 P34 P35 YEL BRW YEL 3 YEL 3 C13 L03 POWER RELAY CT AC250V P24 R220 R219 R221 WHI RED COMPRESSOR 1 1 P05 P04 3 3 CN601 CN600 COIL FOR 4W...

Страница 20: ...FOR P M V DC12V 10 Coil for 4 way valve AC220 240V CAM MD12TF 10 STF Compressor 3 phases 4 poles 1100W Inverter attached Inverter attached Inverter attached 8 Inverter attached DA130A1F 27F DA150A1F 2...

Страница 21: ...Modulating valve at liquid side CAM B22YGTF 3 TD 4 way valve STF 0108Z Compressor DA130A1F 27F Propeller fan Refrigerant amount 1 40kg OUTDOOR UNIT Muffler TC TA Min 2m Chargeless 15m Charge 20g m 16...

Страница 22: ...ht difference 10m Allowable pipe length P Pressure measurement Gauge attaching port Vacuum pump connecting port Strainer Pulse Modulating valve at liquid side CAM B22YGTF 3 TD 4 way valve STF 0213Z Co...

Страница 23: ...etting Fan Speed Selection ON TIMER Setting OFF TIMER Setting Louver AUTO Swing Louver Direction Setting Operation Mode Selection AUTO COOL DRY HEAT FAN ONLY ECO Hi POWER Heat Exchanger Sensor TC Room...

Страница 24: ...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 con...

Страница 25: ...control 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 Operatio...

Страница 26: ...4 1 Louver position 34 2 Air direction adjustment 34 3 Swing 34 9 ECO operation 35 10 Temporary operation 36 11 Pulse Modulating valve P M V control 36 12 Remote A or B selection 37 9 3 Auto Restart F...

Страница 27: ...mote controller ON OFF Air conditioner Air purifier Operation select COOL HEAT AUTO DRY Temperature setup Air direction Swing Air volume select AUTO LOW LOW MED MED HIGH ECO ON timer setup OFF timer s...

Страница 28: ...e operation mode the fan speed is controlled by the previous operation mode 4 DRY operation DRY operation is performed according to the difference between room temperature and the setup temperature as...

Страница 29: ...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 Fig 2 Table 1 Indoor fan air flow rate 2...

Страница 30: ...c 1 0 d 1 5 e 2 0 f 2 5 g 5 0 5 5 L W9 M WD 1 2 3 H WE H WE Line approximate H and SUL with Tc SUL W2 Stop 46 46 Tc 34 45 45 33 33 33 21 32 32 20 A 4 A 4 A 4 A 4 A 4 A 4 Fan speed MANUAL in starting F...

Страница 31: ...O Indoor unit controller Fan motor ON 3 Fan lock OFF status of fan motor continues 4 Motor operates as shown in the table below 1 Outdoor unit operation command Outdoor fan control ir OFF Alarm displa...

Страница 32: ...power of the compressor drive circuit does not exceed 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 Capa...

Страница 33: ...ressor speed is kept Q zone When temperature of the indoor heat exchanger drops in the range from 46 C to under 55 C the compressor speed is kept Q zone 2 When temperature of the indoor heat exchanger...

Страница 34: ...lower stop the indoor fan Finish of defrost operation Returning conditions from defrost operation to heating operation 1 Temperature of outdoor heat exchanger rises to 8 C or higher 2 Temperature of...

Страница 35: ...r lower limit position swing operation is performed in width 35 from the limit which the stop position exceeded 3 Swing 2 Louver position in heating operation 2 Air direction adjustment The position i...

Страница 36: ...d 0Hz A zone aHz B zone a to cHz C zone cHz 0 0 5 1 0 1 5 2 0 2 5 3 0 4 0 5 0 11 0 Room temp Set temp 3 5 3 0 2 5 1 5 1 0 TSC 1 0 2 0 5 5 1H 2H 11 10 7 6 5 4 3 2 1 OFF Dry Max 12 11 9 8 10 TA 6 0 6 5...

Страница 37: ...cording to operating status of the air conditioner this function also controls the open degree of valve with an expansion valve with pulse Modulation 1 When starting the operation move the valve once...

Страница 38: ...old button on the Remote Control by the tip of the pencil 00 will be shown on the the air conditioner ON display 4 Press during pushing CHK B will show on the display and 00 will disappear and the air...

Страница 39: ...Automatic operation The indoor unit operates in according to the current operation 2 Cooling operation remote controller does not change The indoor unit s fan speed level increase 1 tap The preset tem...

Страница 40: ...equipped with an automatic restarting function which allows the unit to restart operating with the set operating conditions in the event of a power supply being accidentally shut down The operation wi...

Страница 41: ...ess RESET button once more or use the remote controller to turn it on 9 3 2 How to Cancel the Auto Restart Function To cancel auto restart function proceed as follows Repeat the setting procedure the...

Страница 42: ...erature indication 3 Press Select AUTO LOW LOW MED MED or HIGH Infrared signal emitter Start Stop button Mode select button Temperature button Fan speed button Swing louver button Set louver button On...

Страница 43: ...OFF Timer Press Set the desired ON timer Press Set the desired OFF timer Press Set the timer Press Set the timer Press Cancel the timer Press Cancel the timer Press Set the ON timer Press Press Set th...

Страница 44: ...peration 3 beep sound and OPERATION lamp blink 5 time sec for 5 secpmds 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 o...

Страница 45: ...start and press it again to stop the operation 7 PRESET indicator Flashes for 3 seconds when the PRESET button is pressed during operation The mark is shown when holding down the button for more than...

Страница 46: ...to get slack Cut the piping hole sloped slightly 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 left Botto...

Страница 47: ...e to the base plate of the outdoor unit before installing it 10 2 2 Accessory and Installation Parts Part name Q ty Installation plate 1 Wireless remote control 1 Battery 2 Remote control holder 1 Par...

Страница 48: ...er Gas leakage detector Applicable to R22 model Changes As pressure is high it is impossible to measure by means of conventional gauge In order to prevent any other refrigerant from being charged each...

Страница 49: ...ise interference The location of the remote controller should be determined as shown below 10 3 2 Drilling a Hole and Mounting Instal lation Plate Drilling a hole When install the refrigerant pipes fr...

Страница 50: ...air conditioner NOTE Wire type More than 1 5 mm2 H07RN F or 60245IEC66 CAUTION This appliance can be connected to a main circuit breaker in either of the following two ways 1 Connection to fixed wirin...

Страница 51: ...f thefront panel for the bottom left or right connection with a pair of nippers 2 Changing drain hose For left connection left bottom connection and rear left connection s piping it is necessary to re...

Страница 52: ...at they are posi tioned within 43 mm above the wall surface If the connecting pipes are positioned more than 43 mm above the wall surface the indoor unit may be unstable When bending the connecting pi...

Страница 53: ...de at a slight downward slant on the outdoor side Fig 10 3 17 For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing the bottom up at the specified pla...

Страница 54: ...in water does not cause any problems Precautions for adding refrigerant Use a scale having a precision with at least 10 g per index line when adding the refrigerant Do not use a bathroom scale or simi...

Страница 55: ...6 mm inside diam eter and drain off the water For the position where the drain nipple is installed refer to the installation diagram of the indoor and outdoor units Check that the outdoor unit is hori...

Страница 56: ...ir in the connecting pipes using a VACUUM PUMP 4 Check gas leaks connected points Use a vacuum pump Be sure to use a vacuum pump with counter flow prevention function so that oil inside the pump does...

Страница 57: ...rvice port FILE NO SVM 10052 1 1 2 3 L N Terminal block Connecting cable Power cord Connecting cable Power cord Earth line Earth line 0 1 0 1 0 1 0 1 30 30 40 40 L N 1 2 3 Fig 10 4 11 Model Power sour...

Страница 58: ...ote control signal simultaneously and operate In this case the operation can be preserved by setting either one indoor unit or remote control to B setting Both are set to A setting in factory shipment...

Страница 59: ...e 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 con...

Страница 60: ...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...

Страница 61: ...ated 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 cha...

Страница 62: ...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 TIM...

Страница 63: ...button If 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...

Страница 64: ...om 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 norm...

Страница 65: ...r 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...

Страница 66: ...when 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...

Страница 67: ...N10 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...

Страница 68: ...onnector 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...

Страница 69: ...vel 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 conditi...

Страница 70: ...re 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 pro...

Страница 71: ...ton 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...

Страница 72: ...om 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...

Страница 73: ...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...

Страница 74: ...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...

Страница 75: ...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 Re...

Страница 76: ...erating precautions 1 When removing 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...

Страница 77: ...20 30 40 50 Resistance value k 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...

Страница 78: ...the resistance value of 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...

Страница 79: ...ff 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 an...

Страница 80: ...the 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 a...

Страница 81: ...hed 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...

Страница 82: ...cs 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 a...

Страница 83: ...ds once at 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 an...

Страница 84: ...ntal louver leftward m Evaporator Heat exchanger 1 Follow to the procedure in the item k 2 Remove the pipe holder from the rear side of the main unit 3 Remove two fixing screws at the left side of the...

Страница 85: ...out from the housing push it into the specified position and then incorporate it in the main body Two screws Bearing Bearing base Two screws Bearing Bearing base FILE NO SVM 10052 One screw One screw...

Страница 86: ...w 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...

Страница 87: ...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 10052 Perform positioning of the fan m...

Страница 88: ...the indoor unit 2 Attach the upper cabinet ST1T 4 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 co...

Страница 89: ...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 Hoo...

Страница 90: ...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 conn...

Страница 91: ...st 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 Disenga...

Страница 92: ...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 tighte...

Страница 93: ...ove pipe connected to the compressor with a burner Remarks Reactor 1 Perform work of item 1 of and 2 Remove screws fixing the reactors ST1T 4 10L 4 pcs For 16k FILE NO SVM 10052 7 Remove the fixing sc...

Страница 94: ...etachment 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...

Страница 95: ...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 wo...

Страница 96: ...7 43T44030 EVAPORATOR ASSY 207 43T82008 PLATE INSTALLATION Made in Thailand 42NQV050M Made in Thailand 235 43T44031 EVAPORATOR ASSY 42NQV060M 209 43T19333 HOLDER SENSOR Made in Japan 228 43T09043 GRIL...

Страница 97: ...BOARD ASSY 42NQV050M Made in Thailand 407 43T69739 PC BOARD ASSY 42NQV060M 404 43T62003 CORD CLAMP Made in Thailand 412 43T21397 LOUVER MOTOR Made in Thailand 405 43T69725 PC BOARD ASSY WRS LED 413 4...

Страница 98: ...0 EVAPORATOR ASSY Made in Thailand Made in Thailand 207 43T82008 PLATE INSTALLATION 235 43T44031 EVAPORATOR ASSY Made in Thailand 228 43T09043 GRILLE ASSY SUB 209 43T19333 HOLDER SENSOR Made in Japan...

Страница 99: ...50M2 706 43T50304 SENSOR HEAT EXCHANGER 703 43T60392 TERMINAL 5P Made in Thailand 704 43T60326 FUSE 707 43T62313 BASE PLATE PC Made in Thailand Description Description 701 43T62331 HEATSINK 38NYV060M2...

Страница 100: ...0 COMPRESSOR 26 43T46343 4 WAY VALVE 9 43T43451 CONDENSER ASSEMBLY 27 43T63320 4 WAY VALVE COIL ASSEMBLY 10 43T46358 VALVE PACKED 6 35 DIA 28 43T63319 HOLDER SENSOR Made in Thailand 11 43T46355 VALVE...

Страница 101: ...3041627 COMPRESSOR ASSY 27 43T63334 ASM COIL 4WAY 9 43T43452 CONDENSER ASSEMBLY 28 43T63319 HOLDER SENSOR 10 43T46358 VALVE PACKED 6 35 DIA Made in Thailand 11 43T46355 VALVE PACKED 12 7 DIA H4 29 43T...

Страница 102: ...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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