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Carrier 42UQV050M Series, Service Manual, Page: 81 / 106

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Carrier 42UQV050M Series Service Manual Download Page 81

YES

Does outdoor fan

operate normally?

Replace control  

board.

YES

YES

Compressor

is normal

Check voltage of the

compressor connector

(AC150V-270V)?

Turn ON power

supply.

NO

Remove connector CN300 of

outdoor fan motor.

Check winding resistance by

ohmmeter are correct?

Check rotor locking by rotate

Turn OFF power

supply.

Replace outdoor  

fan motor.

NO

Replace  

compressor.

Replace control  

board.

Replace  

compressor.

YES

Does compresser

operate normally?

with hand.  Can it rotate?

Turn OFF power

supply.

Check compressor

winding resistance

correct?

is in rate.

A

NO

NO

YES

NO

FILE NO. SVM-13035

–

 

80

 

–

Summary of Contents for 42UQV050M Series

Page 1: ...R410A FILE NO SVM 13035 SERVICE MANUAL SPLIT TYPE Indoor Unit High Wall Heat PumpType Outdoor Unit Heat PumpType 42UQV050M 38UYV050M March 2013 42UQV060M 38UYV060M...

Page 2: ...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 46 11 HOW TO DIAGNOSE THE TR...

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 CON...

Page 4: ...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 s...

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 ap...

Page 6: ...m Maximum length m Maximum chargeless length m Maximum height difference m Refrigerant Name of refrigerant Weight kg Wiring Power supply connection Interconnection Usable temperature range Indoor Cool...

Page 7: ...110 120 Compressor Speed RPS Current A 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 42UQV050M 6 0k...

Page 8: ...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...

Page 9: ...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...

Page 10: ...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...

Page 11: ...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...

Page 12: ...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...

Page 13: ...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...

Page 14: ...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...

Page 15: ...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...

Page 16: ...s remote controller Grille Inlet Front Panel 132 150 200 222 200 278 525 Drain hose 0 5 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...

Page 17: ...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...

Page 18: ...MP 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 CT AC250V P24 R220 R219 R221 WHI RED COMPRESS...

Page 19: ...C140V 43W 3 Suction temp sensor TS sensor 10k 25 C 4 Discharge temp sensor TD sensor 62k 20 C 5 Outside air temp sensor TO sensor 10k 25 C 6 Heat exchanger temp sensor TE sensor 10k 25 C 7 Terminal bl...

Page 20: ...port Strainer Pulse Modulating valve at liquid side CAM BD16TCTH 2 TD 4 way valve STF 0108Z Compressor DA131S1B 31FZ Propeller fan Refrigerant amount 1 40kg OUTDOOR UNIT Muffler TC TA Min 2m Chargeles...

Page 21: ...lator 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 w...

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 42UQV050M 2 5 to 2 6 40 to 42 1 to...

Page 23: ...ared 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 ONL...

Page 24: ...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 Discharg...

Page 25: ...ection of inverter input current and current release operation Over current detection and prevention operation to IGBT module Compressor stop function Compressor and outdoor fan stop function when ser...

Page 26: ...t control Only in heating operation 33 8 Louver control 34 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 co...

Page 27: ...ller 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 ECO SLEEP ON timer setup QUIET OFF ti...

Page 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...

Page 29: ...r 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 Table 1 In...

Page 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...

Page 31: ...te 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 command Outdoor fan c...

Page 32: ...or 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 Setup of...

Page 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...

Page 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...

Page 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...

Page 36: ...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 11 10 7...

Page 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...

Page 38: ...nit 3 Push and hold CHECK button on the Remote Control by the tip of the pencil 00 will be shown on 4 Press MODE during pushing CHECK B will show on the display and 00 will disappear and the air condi...

Page 39: ...pressor speed Reduce slowly compressor speed Keeps the compressor speed If the operation is performed with lower speed than one commanded by the serial signal speed is slowly raised up to the commande...

Page 40: ...ancel comfort sleep mode Heating mode The preset temperature will drop down as shown on ECO operation Item No 9 Push the ECO SLEEP button to choose the operating hours Repeat pushing to setect the hou...

Page 41: ...This indoor 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 d...

Page 42: ...ate at this 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 set...

Page 43: ...ERATION To automatically select cooling or fan only operation 1 Press Select A 2 Press Set the desired temperature 2 COOLING HEATING FAN ONLY OPERATION 1 Press Select Cool Heat or Fan only 2 Press Set...

Page 44: ...ess Set the timer Cancel the time Press Set the ON timer Press Press Set the OFF timer Press button during the or mark flashing 1 1 2 3 2 3 4 Daily timer allows the user to set both the ON OFF timers...

Page 45: ...OPERATION Set your preferred operation for future use The setting will be memorized by the unit for future operation except air flow direction 1 Select your preferred operation 2 Press and hold for 3...

Page 46: ...it again to stop the operation 8 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 3 seconds while...

Page 47: ...tilt the indoor unit for better operation Do not allow the drain hose to get slack Make sure to run the drain hose sloped downward Cut the piping hole sloped slightly Attach to the front panel The pr...

Page 48: ...M 13035 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 ins...

Page 49: ...ver ginseng filter x 1 Part No 4 5 6 Part No Others Name Owner s manual Installation manual Part name Q ty 11 Nano photo copper zinc filter x 1 Battery cover x 1 7 10 Mounting screw 4 x 25 s x 6 Flat...

Page 50: ...e 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 indicat...

Page 51: ...ole 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 P...

Page 52: ...pe 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 wiring A switch or circuit breake...

Page 53: ...part of the front panel thon pull the upper part of the front toward you to remove it from the rear plate as shown on figure 4 After removing the front panel remove the screws and Display unit from th...

Page 54: ...25 N m 0 03 kgf m 7 8 connect remote control and air conditioner 1 Recommend to use double insulation lead wire for 2 For wire operation 1 remote control can control only Remark 1 indoor unit How to...

Page 55: ...pulling out the drain hose When removing the drain hose be careful of any sharp edges of steel plate The edges can injuries To install the drain hose insert the drain hose firmly until the connection...

Page 56: ...e auxiliary pipes two and connecting cable with facing tape tightly In case of leftward piping and rear leftward piping bind the auxiliary pipes two only with facing tape Fig 10 3 20 Carefully arrange...

Page 57: ...hose insulate the connection part of extension drain hose with shield pipe Fig 10 3 25 Screw Screw 11 Information The lower part of indoor unit may float due to the condition of piping and you cannot...

Page 58: ...nt Since the refrigerant is in liquid form it can fill quickly Therefore perform the filling operation carefully and insert the refrigerant gradually CAUTION 1 Install the outdoor unit without anythin...

Page 59: ...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 horizont...

Page 60: ...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 not...

Page 61: ...Connection to fixed wiring A switch which disconnects all poles and has a contact separation of at least 3 mm must be incorporated in the fixed wiring 1 The supply voltage must be the same as the rat...

Page 62: ...will be shown on the display 4 Press MODE during pushing CHECK B will show on the display and 00 will disappear and the air conditioner will turn OFF The Remote Control B NOTE 1 Repeat above step to r...

Page 63: ...se 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 co...

Page 64: ...ge 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...

Page 65: ...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...

Page 66: ...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...

Page 67: ...display All indicators on the indoor unit will flash 5 times per 1 sec 1 2 3 4 11 4 Self Diagnosis by Remote Controller Check Code 1 If the lamps are indicated as shown B to E in Table 11 3 1 execute...

Page 68: ...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...

Page 69: ...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...

Page 70: ...esistance of compressor winding If circuit is shortage replace the compressor Current detect circuit of All OFF Flashes after Even if trying to operate again all inverter P C board error error is dete...

Page 71: ...ror count comes 4 times record error to check code But after re starting operation if no error is detected and air conditioner can operate more than 6 minutes error count is cleared The others Return...

Page 72: ...ound of initial operation etc 4 Observe any possibility cause which may affect high temperature of compressor Compressor is high current All OFF Flashes after 1 Check installation conditions such as t...

Page 73: ...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...

Page 74: ...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...

Page 75: ...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...

Page 76: ...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...

Page 77: ...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...

Page 78: ...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...

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 t...

Page 80: ...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...

Page 81: ...00 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 Repla...

Page 82: ...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...

Page 83: ...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 sen...

Page 84: ...sistance 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 Under 2...

Page 85: ...normal charging characteristics are shown in continuity test by the tester Case that product is good Pointer swings once and returns slowly When performing test once again under another polarity the p...

Page 86: ...e 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 acce...

Page 87: ...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...

Page 88: ...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...

Page 89: ...y 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 fixin...

Page 90: ...ontal 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 en...

Page 91: ...crews 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 bod...

Page 92: ...ew of the cross flow fan 3 Remove two fixing screws of the motor cover and them remove the motor cover 4 Remove two more fixing screws of the motor band and remove the motor band Remarks 5 Pull the fa...

Page 93: ...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 m...

Page 94: ...e 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 conca...

Page 95: ...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 th...

Page 96: ...tor 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 ho...

Page 97: ...e 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 t...

Page 98: ...t 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 th...

Page 99: ...erminal 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 ST1T 4 10L 4 pcs FILE NO SVM 13035 7 Remove the fixi...

Page 100: ...chment 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...

Page 101: ...he 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...

Page 102: ...43T09040 LOUVER HORIZONTAL 215 43T44031 EVAPORATOR ASSY 206 43T70313 HOSE DRAIN 42UQV060M 207 43T79313 CAP DRAIN 216 43T19333 HOLDER SENSOR 208 43T21371 FAN MOTOR 42UQV060M 217 43T49010 PIPE SHIELD 20...

Page 103: ...50308 SENSOR HEAT EXCHANGER 407 43T69739 PC BOARD ASSY 402 43T60331 TERMINAL 3P 42UQV060M 403 43T69320 TEMPERATURE SENSOR 412 43T21397 STEPPING MOTOR 404 43T62003 CORD CLAMP 413 43T60386 MOTOR CORD 40...

Page 104: ...UYV050M 8 43T41446 COMPRESSOR 38UYV050M 26 43T46370 4 WAY VALVE 38UYV060M 9 43T43451 CONDENSER ASSEMBLY 27 43T63320 4 WAY VALVE COIL ASSEMBLY 38UYV050M 38UYV050M 9 43T43452 CONDENSER ASSEMBLY 27 43T63...

Page 105: ...o 701 43T62320 HEATSINK 38UYV050M 704 43T60326 FUSE 701 43T62331 HEATSINK 38UYV060M 705 43T60377 TEMPERATURE SENSOR 702 43T69881 PC BOARD 38UYV060M 706 43T50304 SENSOR HEAT EXCHANGER 702 43T69943 PC B...

Page 106: ...TOSHIBA CARRIER THAILAND CO LTD...

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