Carrier 38NYV050M Series Service Manual Download

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R410A

FILE NO. SVM-08048

SERVICE MANUAL

SPLIT TYPE

Indoor Unit

<High Wall, Heat Pump Type>

42NQV050M

42NQV060M

Printed in Japan, Mar., 2008

Outdoor Unit

<Heat Pump Type>

38NYV050M

38NYV060M

Summary of Contents for 38NYV050M Series

Page 1: ...R410A FILE NO SVM 08048 SERVICE MANUAL SPLIT TYPE Indoor Unit High Wall Heat PumpType 42NQV050M 42NQV060M Printed in Japan Mar 2008 Outdoor Unit Heat PumpType 38NYV050M 38NYV060M...

Page 2: ...VIEWS 14 5 WIRING DIAGRAM 16 6 SPECIFICATIONS OF ELECTRICAL PARTS 17 7 REFRIGERANT CYCLE DIAGRAM 18 8 CONTROL BLOCK DIAGRAM 21 9 OPERATION DESCRIPTION 23 10 INSTALLATION PROCEDURE 45 11 HOW TO DIAGNO...

Page 3: ...n 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 pipes use n...

Page 4: ...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 cause fire...

Page 5: ...Liquid side 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 tem...

Page 6: ...mpressor Speed RPS Current A 42NQV050M 50 55 60 65 70 75 80 85 90 95 100 105 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 Outdoor Temperature o C Capacity Ratio Capacity Ratio 100 5 0kW 42NQV050M 6 0k...

Page 7: ...pressure 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 refrigera...

Page 8: ...of socket 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 Ma...

Page 9: ...h 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 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 Dimensi...

Page 10: ...htening torque 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...

Page 11: ...rigerant 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 Refrige...

Page 12: ...inder and the connecting port of the electronic balance and charge liquid refrigerant Indoor unit Outdoor unit Opened Opened Refrigerant cylinder with siphon Check valve Open close valve for charging...

Page 13: ...composed 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 fill...

Page 14: ...re use a 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...

Page 15: ...4 CONSTRUCTION VIEWS 4 1 Indoor Unit 42NQV050M 42NQV060M 14...

Page 16: ...B C and D shown in the figure below Packed valve cover Fan guard 4 dia 4 5 embossment for fixing outdoor unit C L Anchor bolt long hole pitch Mounting dimensions of anchor bolt Detailed B leg part 31...

Page 17: ...1 2 2 1 2 TD CN602 5 5 4 4 2 2 1 1 3 3 6 6 TEMP SENSOR TEMP SENSOR OUTDOOR 1 2 1 2 TO SUCTION 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...

Page 18: ...250V 38NYV050M 38NYV060M 9 COIL 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...

Page 19: ...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 B22YGTF 3 TD 4 way val...

Page 20: ...ectional 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...

Page 21: ...1 1 11 to 13 41 to 43 High High 77 Heating Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor condition C pressure pipe temp fan mode fan mode revolution Indoor Outdoor P MPa T1 C...

Page 22: ...it 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 Selectio...

Page 23: ...r 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 functio...

Page 24: ...operation 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...

Page 25: ...ouver position 33 2 Air direction adjustment 33 3 Swing 33 9 ECO operation 34 10 Temporary operation 35 11 Pulse Modulating valve P M V control 35 12 Self Cleaning function 36 13 Remote A or B selecti...

Page 26: ...nts of remote 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 OF...

Page 27: ...ecting the 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 tempe...

Page 28: ...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 Fig 2...

Page 29: ...C b 0 5 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 s...

Page 30: ...nditioner ON Remote controller YES YES NO NO 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 comm...

Page 31: ...compressor speed so that electric 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...

Page 32: ...the compressor 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...

Page 33: ...s 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 exchanger rises to 8 C or higher 2 Temper...

Page 34: ...r upper or 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 p...

Page 35: ...x 1 COOL min 30 minutes A B C A B C Time Compressor speed 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...

Page 36: ...cycle According 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 va...

Page 37: ...ush and hold 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 an...

Page 38: ...ollows 1 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 p...

Page 39: ...ss button m Press button to turn the unit ON n When short timer is activated all immediately besides all indicatiors on 3 seconds 38 ON OFF 15 Hi POWER Hi POWER button on the remote controller is pres...

Page 40: ...unit is 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 ope...

Page 41: ...s time press 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 proce...

Page 42: ...y No temperature 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...

Page 43: ...the 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 Se...

Page 44: ...set the operation 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...

Page 45: ...utton to 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 m...

Page 46: ...tly 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 Bottom left Left 8 mm thick heat resisting polyethy...

Page 47: ...y and Installation Parts Part name Q ty Installation plate 1 Wireless remote control 1 Battery 2 Remote control holder 1 Part No Part name Q ty Remote control holder mounting screw 3 1 16 2 Part No Pa...

Page 48: ...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 high and gasification speed is fast it is difficult to read...

Page 49: ...ces or noise 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...

Page 50: ...e of the 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 fi...

Page 51: ...ing drain hose For left connection left bottom connection and rear left connection s piping it is necessary to relocate the drain hose and drain cap CAUTION Earth line 10 mm 10 mm 50 mm 110 mm How to...

Page 52: ...so that 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 connecti...

Page 53: ...firmly hooked on the installation plate Installation plate Indoor unit Connecting cable Auxiliary pipes 10 3 7 Drainage 1 Run the drain hose at a downward sloped angle NOTE Hole should be made at a s...

Page 54: ...e the drain 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 scal...

Page 55: ...se with 16 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 uni...

Page 56: ...pipes 2 Tighten connections carefully between pipes and unit 3 Evacuate the air in the connecting pipes using a VACUUM PUMP 4 Check for gas leaks at all connections Use a vacuum pump Be sure to use a...

Page 57: ...ock Connecting cable Power cord 30 30 10 L N 10 1 2 3 10 10 40 40 Earth line Earth line Connecting cable Power cord CAUTION Incorrect wiring connection may cause electri cal parts to burn out Be sure...

Page 58: ...e the remote 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...

Page 59: ...n the P C board by hand The new inverter 3DV inverter will be incorporated starting with this unit 3DV 3 shunt Discrete Vector control K The control circuitry has an uninsulated construction No 1 2 3...

Page 60: ...e components Sensor leads Do NOT lay the circuit board assembly flat K Precautions when inspecting the control section of the outdoor unit NOTE A large capacity electrolytic capacitor is used in the o...

Page 61: ...ted 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 chan...

Page 62: ...en air conditioner operates 2 When item B and C and item B and a part of item E occur concurrently priority is given to the block of item B 3 The check codes can be confirmed on the remote controller...

Page 63: ...OFF 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 continuou...

Page 64: ...ocomputer returns the initial status However the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory 3 After servicing press CLR button under...

Page 65: ...y valve operation Block Outdoor P C board Not displayed Outdoor P C board Others including compressor Operation of diagnosis function Cause of operation Inverter over current protective circuit operat...

Page 66: ...iderable principle cause Measures Parts R04 R05 DB01 C01 C03 IC01 and T01 are defective Remote controller is defective Refer to 5 Troubleshooting for remote controller Parts of a power supply circuit...

Page 67: ...r more between 5 and 3 of motor connector CN31 Is it possible to detect DC 1V or more between 5 and 3 of motor connector CN31 Is it possible to detect DC 310 340V between 1 and 3 of motor connector CN...

Page 68: ...ce motor 4 Indoor fan motor automatically starts to rotate by turning on power supply Cause The IC is built in the indoor fan motor Therefore the P C board is also mounted to inside of the motor If th...

Page 69: ...Batteries are exhausted Does radio sound is affected by remote controller when a signal is transmitted at distance of 5 cm from radio Is transmission mark indicated P C board is defective Replace P C...

Page 70: ...o 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 jud...

Page 71: ...ice 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 condens...

Page 72: ...R or S Summary If fuse was blown be sure to check the electrolytic capacitor and diode block DB01 Connect discharge resistance approx 100 40W or soldering iron plug between terminals of the electro ly...

Page 73: ...s 11 8 1 How to Check the P C Board Indoor Unit 1 Operating 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...

Page 74: ...ndicators OPERATION TIMER FILTER PURE Preheat Defrost are lit for 3 seconds later 1 Check whether or not the com pressor operates 2 Check whether or not the OP ERATION indicator flashes 1 Check whethe...

Page 75: ...0 20 30 40 50 Resistance value k Temperature C TD Discharge temp sensor TA Room temp sensor TC Heat exchanger temp sensor TO Outdoor temp sensor TE Outdoor heat exchanger temp sensor TS Suction temp s...

Page 76: ...1 5 Measure the resistance value of each winding coil by using the tester Under normal temp 25 C Position 1 to 2 1 to 3 1 to 4 1 to 5 Resistance value 250 20 Refer to 11 5 1 3 and 4 Under 20 C Discon...

Page 77: ...ed surface Heat sink IGBT side C12 C13 C14 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...

Page 78: ...inside of 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 moto...

Page 79: ...e 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...

Page 80: ...er positions and two lower center positions of the air outlet and then hang the hanging hooks 4 pcs at the top 3 Tighten four screws Incomplete hanging or incomplete pressing may cause a dewdrops or 2...

Page 81: ...x assembly 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...

Page 82: ...the horizontal louver leftward Evaporator Heat exchanger 1 Follow to the procedure in the item 2 Remove the pipe holder from the rear side of the main unit 3 Remove two fixing screws at the left side...

Page 83: ...Remove the two 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...

Page 84: ...e set screw 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 Pu...

Page 85: ...ing 5 mm 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...

Page 86: ...ation of air conditioner 2 Remove the front panel Remove the 2 fixing screws 3 Remove the electrical part base Remarks Replace terminal block microcomputer ass y and the P C board ass y 12 2 Microcomp...

Page 87: ...ttachment 1 Attach the water proof cover NOTE The water proof cover must be attached without fail in order to prevent rain water etc from entering inside the indoor unit 2 Attach the upper cabinet ST1...

Page 88: ...the motor base The front cabinet 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...

Page 89: ...crew ST1T 4 8L 2 pcs fixing the main body and the inverter box 5 Remove the front cabinet by performing step 1 in and remove the fixing screws ST1T 4 8L for securing the main body and inverter box 6 R...

Page 90: ...e connectors have a disconnect prevention mechanism as such the lock on their housing must be released before they are disconnected 2 Remove the control board assembly from the P C board base Remove t...

Page 91: ...ST1T 4 8L 2 pc used for securing the side cabinet to the bottom plate and heat exchanger 1 Perform work of item 1 of and 2 Remove the flange nut fixing the fan motor and the propeller Flange nut is lo...

Page 92: ...alve away from naked flames Otherwise it may malfunction 7 Remove the fixing screw of the bottom plate and heat exchanger ST1T 4 8L 1 pc 8 Remove the fixing screw of the bottom plate and valve fixing...

Page 93: ...ng the coil from the valve body use your hand to secure the body in order to prevent the pipe from being bent out of shape 1 Detachment 1 Perform work of item 1 of 2 Remove the front cabinet and put i...

Page 94: ...scharge 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 Duri...

Page 95: ...0019 43T00054 43T62031 43T69618 43T44031 MOTOR FAN BEARING ASSY MOLD HOSE DRAIN FAN ASSY CROSS FLOW PIPE SHIELD HOLDER REMOTE CONTROL PLATE INSTALLATION HOLDER SENSOR HOLDER PIPE BASE BEARING CAP DRAI...

Page 96: ...No No No 401 43T50308 SENSOR TC 407 43T69738 PC BOARD ASSY 42NQV050M 402 43T60331 T TERMINAL BLOCK 3P 408 43T69739 PC BOARD ASSY 42NQV060M 403 43T69320 SENSOR TA 412 43T21397 LOUVER MOTOR R 404 43T620...

Page 97: ...96 13 2 Outdoor Unit 001 005 004 032 033 013 002 006 003 009 008 031 034 037 038 012 042 019 016 011 041 007 022 021 020 018 010 043 036 017 015 014 023 024 044 029 028 035 030 026 027 025 045...

Page 98: ...43047669 NUT FLANGE 011 43041638 COMPRESSOR DA130A1F 27F 38NYV050M 034 43039394 BASE MOTOR 012 4314G251 CONDENSER ASSY ROHS 38NYV060M 035 43004242 PLATE PARTITION 013 43043788 CONDENSER ASSY ROHS 38N...

Page 99: ...706 43160566 TERMINAL BLOCK 6P 20A 702 43050423 SENSOR TS 707 4306V029 PC BOARD ASSY MCC5009 38NYV050M 703 43050427 SENSOR TO 708 4306V030 PC BOARD ASSY MCC5009 38NYV060M 704 43050430 SENSOR TD 709 43...

Page 100: ...56 FILE NO SVM 03005 TOSHIBA CARRIER THAILAND CO LTD 144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAMBOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND...

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