Related Manuals for Carrier 42NQ018N
Summary of Contents for Carrier 42NQ018N
- Page 1 FILE NO. SVM-10035-1 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE 42NQ018N / 38NY018N Revised Apr, 2010...
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Page 2: Table Of Contents
FILE NO. SVM-10035 CONTENTS SPECIFICATIONS CONSTRUCTION VIEWS Indoor Unit Outdoor Unit WIRING DIAGRAM SPECIFICATION OF ELECTRICAL PARTS Indoor Unit Outdoor Unit REFRIGERATION CYCLE DIAGRAM CONTROL BLOCK DIAGRAM OPERATION DESCRIPTION Remote control Outline of Air Conditioner Control Description of Operation Circuit Description of Safety and Reliability Prevention Function ECO Operation FILTER check lamp... - Page 3 FILE NO. SVM-10035 TROUBLESHOOTING CHART Troubleshooting Procedure Basic Check Items Primary Judgement Self-Diagnosis by Remote Control (Check Code) Troubleshooting Flowcharts Troubleshooting for Wiring Troubleshooting for P.C. Board Troubleshooting for Remote Control HOW TO REPLACE THE MAIN PARTS 10-1 Indoor Unit 10-2 Outdoor Unit 11.
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Page 4: Specifications
FILE NO. SVM-10035 1. SPECIFICATIONS MODEL 42NQ018N / 38NY018N ITEM Cooling Heating 220V 240V 220V 240V Capacity 5.10 5.12 5.45 5.56 Phase 1∅ Power source 220 - 240 1.58 1.60 1.51 1.55 Power consumption Power factor 0.30 Running Indoor Current Outdoor 7.05... - Page 5 Outdoor unit inlet air temperature (WB) 24°C Note : 2 • Charge refrigerant according to the table below. Refrigerant 42NQ018N / 38NY018N No need to charge 15 m or less extra refrigerant Need to charge Over 15 m up to 20 m (20 g/m) extra refrigerant –...
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Page 6: Construction Views
FILE NO. SVM-10035 2. CONSTRUCTION VIEWS 2-1 Indoor Unit Heat exchanger Grille Inlet Air inlet Air filter 1050 Front Panel Air outlet Knock out system Knock out system Wireless remote controller Drain hose (0.5m) Hanger Hanger Connecting pipe (0.49m) Connecting pipe (0.39m) Remote controller holder (Flare 6.35) -
Page 7: Outdoor Unit
FILE NO. SVM-10035 2.2 Outdoor Unit Ø6 hole Ø6 Hole Ø11x14 Hole A Detail Drawing (Back leg) 2 Ø 11x14 Hole B Detail Drawing (Front leg) Ø 25 Drain outlet (For Ø 8-Ø 10 anchor bolt) HANDLE FAN-GUARD HANDLE Ø 436 COVER-PV Electrical part cover Liquid side... -
Page 8: Wiring Diagram
FILE NO. SVM-10035 3. WIRING DIAGRAM MAIN P.C. B OARD (MCC-890) T R A N S F O R M E R POWER SUPPLY DISCHARGE CN06 220- 240 V ~ 50 Hz PIPE SENSOR (TD) GRN&YEL CN05 CN07 OUTDOOR TERMINAL SG01 OUTDOOR BLOCK... -
Page 9: Specification Of Electrical Parts
FILE NO. SVM-10035 4. SPECIFICATION OF ELECTRICAL PARTS 4-1. Indoor Unit Parts name Type Specifications Fan motor (for indoor) ICF-340-30-2B DC 340V, 30W ° Thermo sensor (TA-sensor) 10k at 25 C Switching Transformer (T01) SWT-77 DC 7V, 12V Microcontroller unit (IC15) TMP87CM40ANG-6P68 Heat exchanger sensor °... -
Page 10: Refrigeration Cycle Diagram
FILE NO. SVM-10035 5. REFRIGERATION CYCLE DIAGRAM Indoor unit Heat exchanger Cooling 0.39 m 0.49 m Heating (Connecting pipe) (Connecting pipe) Æ12.7 Æ6.35 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm Packed valve Packed valve (Æ12.7) (Æ6.35) Heating Cooling 4-way valve Capillary tube Æ2.0 x 1000 Heating Cooling... -
Page 11: Control Block Diagram
FILE NO. SVM-10035 6. CONTROL BLOCK DIAGRAM Indoor Unit Control Panel M.C.U. Functions Operation Heat Exchanger Sensor Display • Louver Control Timer Temperature Sensor • 3-minute Delay at Restart for Compressor Display Filter Sign Infrared Rays Signal Receiver • Motor Revolution Control Display PRE DEF. -
Page 12: Operation Description
FILE NO. SVM-10035 7. OPERATION DESCRIPTION 7-1. Remote control 7-1-1. Remote control and its functions Infrared signal emitter Start/Stop button ( Mode select button ( Temperature button ( Fan speed button ( Swing louver button ( Set louver button ( On timer button ( Off timer button ( OF F... - Page 13 FILE NO. SVM-10035 5. ECO OPERATION To automatically control room to save energy (except in DRY and FAN ONLY mode) Press : Start and stop the operation. Note: Cooling operation; the set temperature will increase automatically 1 degree/ hour for 2 hours (maximum 2 degrees increase). For heating operation the set temperature will decrease.
- Page 14 FILE NO. SVM-10035 9. AUTO RESTART OPERATION To automatically restart the conditioner after the power failure (Power of the unit must be on.) Setting 1. Press and hold the RESET button on the indoor unit for 3 seconds to set the operation.
- Page 15 FILE NO. SVM-10035 7-1-3. Name and Functions of Indications on Remote Controller [Display] All indications, except for the clock time indicator, are displayed by pressing the button. Transmission mark Hi-POWER indicator This transmission mark indicates when the Indicates when the Hi-POWER operation starts. remote controller transmits signals to the indoor Press the Hi-POWER button to start and press it unit.
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Page 16: Outline Of Air Conditioner Control
Table 7-2-1 Indoor fan and air flow rate to the fan speed level is L-. FAN TAP Cooling OPERATION Fan only MODE Heat 1100 1100 1000 42NQ018N Air flow volume (m 1000 1000 – –... - Page 17 FILE NO. SVM-10035 7-3-2. Cooling operation 7-3. Description of Operation Mode ([MODE] button on the remote control is set (1) When turning on the breaker, the operation lamp to the cooling operation.) blinks. This means that the power is on (or the (1) The compressor, 4-way valve, outdoor fan and power supply is cut off.) operation display lamp are controlled as shown in...
- Page 18 FILE NO. SVM-10035 7-3-3. Dry operation 7-3-4. Heating operation ([MODE] button on the remote control is set ([MODE] button on the remote control is set to the dry operation.) to the heating operation.) (1) The compressor, 4-way valve, outdoor fan and (1) The compressor, 4-way valve, outdoor fan and operation display lamp are controlled as shown in operation display lamp are controlled as shown in...
- Page 19 FILE NO. SVM-10035-1 (3) The indoor heat exchanger restricts revolving 7-3-5. Automatic operation speed of the fan motor to prevent a cold draft. The ([MODE] button on the remote control is set upper limit of the revolving speed is shown in to the automatic operation.) Fig.
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Page 20: Description Of Safety And Reliability Prevention Function
FILE NO. SVM-10035 7-4. Drescription of Safety and Reliability Prevention Function 7-4-1. Low-Temperature Limit Control 7-4-3. Defrost Operation *Heat pump model only The microcontroller detects the indoor heat exchanger When the indoor unit is in heating operation, if the temperature to prevent the indoor heat exchanger from refrigerant evaporation temperature detected by the freezing. -
Page 21: Eco Operation
FILE NO. SVM-10035 7-5. Hi POWER Mode 7-6. ECO Operation ([Hi POWER] button on the remote Cooling operation control is pressed.) · The preset temperature will increase 1ºC after the ECO mode has operated for 1 hour and the temperature When [Hi POWER] button is pressed while the indoor will increase another 1ºC after the ECO mode has unit is in Auto, Cooling or Heating operation, Hi... -
Page 22: Auto Restart Function
FILE NO. SVM-10035 7-8. Auto Restart Function 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 down. The operation will resume without warning three minutes after power is restored. - Page 23 FILE NO. SVM-10035 7-8-2. How to Cancel the Auto Restart Function To cancel auto restart function, proceed as follows : Repeat the setting procedure : the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote controller after the main power supply is turned off. •...
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Page 24: Installation Procedure
Also, make sure the equipment is properly earthed. • Appliance shall be installed in accordance with national wiring regulations. If you detect any damage, do not install the unit. Contact your Carrier dealer immediately. CAUTION • Exposure of unit to water or other moisture before installation could result in electric shock. - Page 25 FILE NO. SVM-10035 REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER Please make absolutely sure that the installation of this appliance is reported to the local power supplier before installation. If you experience any problems, or if the installation is not accepted by the supplier, the service agency will take adequate countermeasures.
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Page 26: Installation Diagram Of Indoor And Outdoor Units
FILE NO. SVM-10035 8-2. Installation Diagram of Indoor and Outdoor Units Hook Installation plate Pan head wood Remote control holder Wireless remote control screw Before installing the wireless remote controller • Loading Batteries 1. Remove the battery cover. 2. Insert 2 new batteries (AAA type) following the (+) and (−... -
Page 27: Installation
FILE NO. SVM-10035 8-3. Installation 8-3-1. Optional installation parts Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅6.35 mm each Gas side : ∅12.7 mm Pipe insulating material (polyethylene foam, 8 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit> 108 mm 125 mm Air inlet... -
Page 28: Outdoor Unit
FILE NO. SVM-10035 8-3-2. Accessory and installation parts Part Part Part Part name (Q ’ty) Part name (Q’ty) Part name (Q’ty) Pan head wood screw ∅3 .1 x 16 x 2 Installation plate x 1 Remote control holder x 1 Screw ∅... - Page 29 FILE NO. SVM-10035 8-3-3. Installation/Servicing Tools <Changes in the product and components> In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch) •...
- Page 30 FILE NO. SVM-10035 8-4. Indoor Unit 8-4-2. Drilling a Hole and Mounting Instal- lation Plate 8-4-1. Installation Place • A place which provides enough spaces around the <Drilling a hole> indoor unit as shown in the diagram. When install the refrigerant pipes from the rear. •...
- Page 31 FILE NO. SVM-10035 8-4-3. Electrical Work <When the installation plate is directly 1. The supply voltage must be the same as the mounted on the wall> rated voltage of the air conditioner. 1. Securely fit the installation plate onto the wall by 2.
- Page 32 FILE NO. SVM-10035 8-4-5. Piping and Drain Hose Installation CAUTION CAUTION • Be sure to refer to the wiring system diagram <Piping and drain hose forming> labeled inside the front panel. • Since condensation results in machine trouble, • Check local electrical regulations for any make sure to insulate both the connecting pipes specific wiring instructions or limitations.
- Page 33 FILE NO. SVM-10035 <In case of bottom right or bottom left piping> <How to attach the drain cap> • After making slits on the front panel with a knife or 1. Insert hexagonal wrench (4 mm). similar tool, cut them out with a pair of nippers or an equivalent tool.
- Page 34 FILE NO. SVM-10035 CAUTION Information The lower part of indoor unit may float, due to the • Bind the auxiliary pipes (two) and connecting condition of piping and you cannot fix it to the cable with facing tape tightly. 9 screws installation plate.
- Page 35 FILE NO. SVM-10035 8-5-2. Refrigerant piping connection 8-5. Outdoor Unit 1. Cut the pipe with a pipe cutter. 8-5-1. Installation place • A place which provides enough spaces around the outdoor unit as shown in the left diagram. Roughness Obliquity Warp 90°...
- Page 36 FILE NO. SVM-10035 (Unit : N·m) 8-5-3. Evacuating Outer dia. After the piping has been connected to the indoor unit, Tightening torque of copper pipe you can perform the air purge together at once. ∅6.35 mm 16 to 18 (1.6 to 1.8 kgf·m) AIR PURGE ∅12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
- Page 37 FILE NO. SVM-10035 <Stripping length of connection cable> TO CHARGE REFRIGERANT 18 Class Refrigerant Terminal block No refrigerant Less than 15 m 1 2 3 charging Refrigerant 15 - 20 m (20g/m) charging Terminal screw Earth line Earth line Cord clamp Screw <Packed valve handling precautions>...
- Page 38 FILE NO. SVM-10035 8-6. Others 8-6-4. Remote Controller A or B Selection 8-6-1. Gas leak test Setting When two indoor units are installed in the separated rooms, it is not necessary to change the selector switches. Flare nut connections (Indoor unit) <Remote control A or B Selection>...
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Page 39: Troubleshooting Chart
FILE NO. SVM-10035 9. TROUBLESHOOTING CHART 9-1. Troubleshooting Procedure 9-2-2. Incorrect cable connection between Indoor and outdoor units Follow the details of 9-2. Basic Check Items. The indoor unit is connected to the outdoor unit with If there is no troub le corresponding to 9-2, check 5 cables (Heat pump model) or 3 cables (Cooling Only whether or not there are faulty parts following model). -
Page 40: Primary Judgement
FILE NO. SVM-10035 9-3. Primary Judgement 9-3-2. Failure diagnosis The indoor unit diagnoses the operation condition and 9-3-1. Role of indoor unit controller indicates the information of the self-diagnosis with the The indoor unit controller receives the operation lamps on the display panel of the indoor unit. commands from the remote control and executes them. -
Page 41: Self-Diagnosis By Remote Control (Check Code)
FILE NO. SVM-10035 9-4. Self-Diagnosis by Remote Controller (Check Code) 1. If the lamps are indicated as shown B to E in Table 9-3-1, execute the self-diagnosis by the remote controller. 2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi- tion and indicates the information of the self-diagnosis on the display of the remote controller with the check codes. - Page 42 FILE NO. SVM-10035 Table 9-4-1 Block level Diagnosis function Judgement and action Check Check Block Symptom Conditioner Condition code code status Indoor Thermo. sensor Indicated Continued 1.Check thermo sensor. P.C. board short/break. when detected operation. 2.If it is OK, check abnormal P.C.
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Page 43: Troubleshooting Flowcharts
FILE NO. SVM-10035 9-5. Troubleshooting Flowcharts 9-5-1. Power can not be turned on (No operation at all) <Preliminary checks> (1) Is the supply voltage normal? Operation (2) Is the connection to the AC output OK.? Check Items Main cause Shut off the power supply from AC outlet once and Countermeasure turn it on after 5 seconds. - Page 44 FILE NO. SVM-10035 9-5-2. Power can not be turned on after replacing indoor P.C. board <Checking Procedure> Connect the AC Power supply Return the wiring of the Does the OPERATION Is it wired as shown power relay is returned to lamp blink? in Figure below? the normal procedure.
- Page 45 FILE NO. SVM-10035 9-5-3. Only indoor fan motor does not operate. <Primary check> (1) Is it possible to detect the power supply voltage (200 – 240 V) between 1 and 2 on the terminal block? (2) Does the indoor fan motor operate in cooling operation? (In heating operation, the indoor fan motor does not operate for approximately 5 minutes after it is turned on, to prevent a cold air from blowing in.) –...
- Page 46 FILE NO. SVM-10035 9-5-4. Compressor does not operate. <Primary check> (1) Is the preset temperature higher than the room temperature in cooling operation? (2) Is the crossover cable connected properly? <Inspection procedure> AC 70-100V Replace transformer (CN06) of transformer? outdoor P.C.
- Page 47 FILE NO. SVM-10035 Rewire or replace Are all of compressor cords normal? defective cords. Is compressor motor winding normal? Replace compressor. Compressor is defective. (Check winding resistor.) Is capacitor for compressor normal? Replace capacitor. Capacitor is defective. Replace overload relay. Is overload relay normal? Overload relay is defective.
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Page 48: Troubleshooting For Wiring
FILE NO. SVM-10035 9-6. Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) 9-6-1. Outdoor unit does not operate. <Inspection procedure> (1) Is the voltage between of the indoor terminal block varied? (2) Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram? NOTE: Measure the voltage for 2 minutes and 30 seconds after starting the unit. -
Page 49: Troubleshooting For P.c. Board
FILE NO. SVM-10035 9-7. Troubleshooting for P.C. board <Inspection procedure> (1) If the P.C. board is defective , check for disconnec- 9-7-1. How to check indoor P.C. board tion, burn or discoloration of the copper foil pattern of the P.C. board. <Cautions for handling P.C. - Page 50 FILE NO. SVM-10035 Procedure Check points Causes 1. Check whether or not the 1. The temperature of the indoor If the above condition (No. 5) still heat exchanger is extremely high. compressor operates. continues, start the unit in the 2. The connector of the heat 2.
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Page 51: Troubleshooting For Remote Control
FILE NO. SVM-10035 9-8. Troubleshooting for Remote Control The unit does not beep at all. Press [ OPERATION lamp on button. indoor unit is not indicated. Is transmission mark indicated? Reset the remote control by take off battery for Is receiver on 10 sec, then restore it indoor unit exposed to direct sunlight? -
Page 52: How To Replace The Main Parts
FILE NO. SVM-10035 10. HOW TO REPLACE THE MAIN PARTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. •... - Page 53 FILE NO. SVM-10035 Part name Procedures Remarks Front panel 4) Press "PUSH" part under the front panel and remove hooks of the front panel from the installation plate. Installation plate Front panel Press 5) Remove the front panel fixing screws. (4 pcs.) 6) Take off four hooks of panel from rear side.
- Page 54 FILE NO. SVM-10035 Part name Procedures Remarks Electric parts ‚ 1) Remove screw of earth lead attached to the box assembly end plate of the evaporator. 2) Remove the lead wire cover, and remove connector for the fan motor and connec- tor for the louver motor from the electric parts box assembly.
- Page 55 FILE NO. SVM-10035 Part name Procedures Remarks ƒ Horizontal louver 1) Remove shaft of the horizontal louver from the back body. (First remove the left shaft, and then remove other shafts while sliding the horizontal louver leftward.) „ Evaporator 1) Follow to the procedure in the item ‚...
- Page 56 FILE NO. SVM-10035 Part name Procedures Evaporator 4) Remove three fixing screw at the right (Heat exchanger) side of the heat exchanger, and separate the heat exchanger from the back body. (Figure 4, 5) One screw (Figure 4) One screw (Figure 5) Bearing 1) Follow to the procedure in the item...
- Page 57 FILE NO. SVM-10035 Part name Procedures Remarks Fan motor 1) Follow to the procedure till item „ 2) Loosen the 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.
- Page 58 FILE NO. SVM-10035 Part name Procedures Remarks Cross flow fan <Caution at reassembling> 1) To incorporate the fan motor incorporate the motor into the position in the following figure, and then install the fan motor. • Install the cross flow fan so that the right end of the 1st joint from the right of the cross flow fan is set keeping 5.0 mm from closed wall of the main unit.
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Page 59: Outdoor Unit
FILE NO. SVM-10035 10-2. Outdoor Unit Part name Procedures Remarks Top cabinet 1) Stop the operation of the air conditioner and turn off Front cabinet its main power supply or remove the power supply cord. 2) Remove the packed valve cover and the electrical parts cover (2 screws ∅... - Page 60 FILE NO. SVM-10035 Part name Procedures Remarks 1) Perform the common procedure 1 Running Running capacitor for Running capacitor 2) Remove the capacitor band. (1 screw ∅4 x 10L) capacitor compressor for fan motor 3) Disconnect the lead wires from the capacitor for compressor terminal.
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Page 61: Exploded Views And Parts List
FILE NO. SVM-10035 11. EXPLODED VIEWS AND PARTS LIST 11-1. Indoor Unit (E-Parts Assy) Location Part Location Part Description Description CORD CLAMP 43T60331 TERMINAL; 3P 43T62003 (Made in Thailand) 43T50004 SENSOR; HEAT EXCHANGER 43T69845 ASM-PCB-SERVE 43T69005 SENSOR;THERMOSTAT 43T69747 ASM-STEPPING-MOTOR MOTOR CORD 43T69736 43T60386 (Made in Thailand) -
Page 62: Indoor Unit
FILE NO. SVM-10035 11-2. Indoor Unit Location Part Location Part Description Description 43T00526 FRONT PANEL ASSY 43T39020 BAND, MOTOR, LEFT (Made in Thailand) 43T09446 GRILLE OF AIR INLET ASSY 43T39022 BAND,MOTOR,RIGHT UP (Made in Thailand) 43T03377 BACK BODY ASSY 43T39023 BAND,MOTOR,RIGHT DOWN (Made in Thailand) AIR FILTER... -
Page 63: Outdoor Unit
FILE NO. SVM-10035 11-3. Outdoor Unit Location Part Location Part Description Description 43T42324 BASE PLATE ASSEMBLY 43T19330 PACKED VALVE COVER 43T41427 COMPRESSOR;PA200X2CS-4KU1 43T00521 UPPER CABINET ASSEMBLY 43T49011 SPRING BASE(UPPER) 43T96305 BUSHING 43T49336 SPRING BASE (LOWER) 43T62330 ELECTRIC PART COVER ASSEMBLY 43T49019 SPRING;... - Page 64 FILE NO. SVM-03012 – 64 –...