Carrier 42NQV009E Service Manual
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Carrier 42NQV009E Service Manual

Carrier 42NQV009E Service Manual

Air-conditioner split wall type
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FILE NO. SVM-07018-1
SERVICE MANUAL
AIR-CONDITIONER
SPLIT WALL TYPE
42NQV009E / 38NYV009E
42NQV012E / 38NYV012E
April, 2007

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Summary of Contents for Carrier 42NQV009E

  • Page 1 FILE NO. SVM-07018-1 SERVICE MANUAL AIR-CONDITIONER SPLIT WALL TYPE 42NQV009E / 38NYV009E 42NQV012E / 38NYV012E April, 2007...

  • Page 2: Table Of Contents

    WIRING DIAGRAM Indoor Unit Outdoor Unit (38NYV009E, 38NYV012E) SPECIFICATION OF ELECTRICAL PARTS Indoor Unit Outdoor Unit (38NYV009E, 38NYV012E) REFRIGERANT CYCLE DIAGRAM Refrigerant Cycle Diagram (42NQV009E / 38NYV009E, 42NQV012E / 38NYV012E) Operation Data CONTROL BLOCK DIAGRAM Indoor Unit Outdoor Unit OPERATION DESCRIPTION...
  • Page 3 FILE NO. SVM-07018 10. HOW TO DIAGNOSE THE TROUBLE 10-1 First Confirmation 10-2 Primary Judgment 10-3 Judgment by Flashing LED of Indoor Unit 10-4 Self-Diagnosis by Remote Control (Check Code) 10-5 Judgment of Trouble by Every Symptom 10-6 Check Code 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...

  • Page 4: Specifications

    FILE NO. SVM-07018 1. SPECIFICATIONS 1-1. Specifications Unit model 42NQV009E Indoor 38NYV009E Outdoor Cooling capacity (kW) 2.50 Cooling capacity range (kW) 1.3~ 2.9 Heating capacity (kW) 3.20 Heating capacity range (kW) 1.1~ 4.0 1Ph, 220 − 240V~50Hz Power supply Indoor...
  • Page 5 FILE NO. SVM-07018 Unit model 42NQV012E Indoor 38NYV012E Outdoor Cooling capacity (kW) 3.30 Cooling capacity range (kW) 1.3~3.9 Heating capacity (kW) 4.10 Heating capacity range (kW) 1.1~4.8 1Ph, 220 − 240V~50Hz Power supply Indoor Operation mode Cooling Heating Electric Running current 0.15 0.15 characteristics...

  • Page 6: Operation Characteristic Curve

    FILE NO. SVM-07018 1-2. Operation Characteristic Curve <Heating> <Cooling> 38NYV012E 38NYV012E 38NYV009E 38NYV009E Compressor speed (rps) Compressor speed (rps) 1-3. Capacity Variation Ratio According to Temperature <Cooling> <Heating> Current Limited Start • Conditions • Conditions Indoor : DB27°C/WB19°C Indoor : DB 20°C Indoor air flow : High Indoor air flow : High Pipe length 5m...

  • Page 7: Refrigerant R410A

    FILE NO. SVM-07018 2. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC (5) After completion of installation work, check to (R410A) which does not damage the ozone layer. make sure that there is no refrigeration gas leakage. The working pressure of the new refrigerant R410A is If the refrigerant gas leaks into the room, coming 1.6 times higher than conventional refrigerant (R22).
  • Page 8 FILE NO. SVM-07018 Table 2-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A 6.35 0.80 0.80 9.52 0.80 0.80 12.70 0.80 0.80 15.88 1.00 1.00 (2) Joints b) Socket Joints For copper pipes, flare joints or socket joints are Socket joints are such that they are brazed for used.
  • Page 9 FILE NO. SVM-07018 Table 2-2-3 Dimensions related to flare processing for R410A A (mm) Outer Nominal Thickness diameter Conventional flare tool Flare tool for R410A diameter (mm) (mm) clutch type Clutch type Wing nut type 6.35 0 to 0.5 1.0 to 1.5 1.5 to 2.0 9.52 0 to 0.5...
  • Page 10 FILE NO. SVM-07018 Fig. 2-2-2 Relations between flare nut and flare seal surface (2) Flare Connecting Procedures and Precautions When it is strong, the flare nut may crack and a) Make sure that the flare and union portions do may be made non-removable. When choosing not have any scar or dust, etc.

  • Page 11: Tools

    FILE NO. SVM-07018 2-3. Tools 2-3-1. Required tools The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For ∅12.70 copper pipe) of the refrigerant piping are lengthened.

  • Page 12: Recharging Of Refrigerant

    FILE NO. SVM-07018 2-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. When the compound gauge’s pointer has indi- cated -0.1 Mpa (-76 cmHg), place the handle Low in the fully closed position, and turn off the Connect the charge hose to packed valve service...

  • Page 13: Brazing Of Pipes

    FILE NO. SVM-07018 1 Be sure to make setting so that liquid can be charged. 2 When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.
  • Page 14 FILE NO. SVM-07018 (2) Characteristics required for flux 2-5-3. Brazing • Activated temperature of flux coincides with the As brazing work requires sophisticated techniques, brazing temperature. experiences based upon a theoretical knowledge, it • Due to a wide effective temperature range, flux must be performed by a person qualified.

  • Page 15: Construction Views

    FILE NO. SVM-07018-1 3.CONSTRUCTION VIEWS 3-1. Indoor Unit Front panel Air filter Air inlet Heat exchanger Back body Air outlet Knock out system Knock out system 64 53 Hanger Connecting pipe (0.43m) Drain hose (0.54m) (Flare ∅6.35) Hanger Connecting pipe (0.33m) (Flare ∅...

  • Page 16: Outdoor Unit

    FILE NO. SVM-07018 3-2. Outdoor Unit − 15 −...

  • Page 17: Wiring Diagram

    FILE NO. SVM-07018 4. WIRING DIAGRAM 4-1. Indoor Unit COLOR INDICATION BROWN INDOOR OUTDOOR TERMINAL ２ ３ WHITE UNIT UNIT BLOCK YELLOW BLUE BLACK GRAY PINK W HI ORANGE GRN&YEL GREEN & YELLOW GREEN CN24 CN23 CN21 CN01 LINE (BLU) FILTER HEAT EXCHANGER Power...
  • Page 18 FILE NO. SVM-07018 – 17 –...

  • Page 19: Outdoor Unit (38Nyv009E, 38Nyv012E)

    FILE NO. SVM-07018 5. SPECIFICATION OF ELECTRICAL PARTS 5-1. Indoor Unit Parts name Type Specifications Fan motor (for indoor) AFS-220-20-4BR AC Motor with 150°C thermo fuse Thermo. sensor (TA-sensor) ——— 10 kΩ at 25°C AC-AC transformer (T01) TT-10 187 - 276V, 6VA µPD780024AGK Microcomputer Heat exchanger sensor...

  • Page 20: Outdoor Unit (38Nyv009E, 38Nyv012E)

    FILE NO. SVM-07018 6. REFRIGERANT CYCLE DIAGRAM 6-1. Refrigerant Cycle Diagram 42NQV009E / 38NYV009E Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Pressure measurement Deoxidized copper pipe Max. :10m Gauge attaching port Outer dia. : 6.35mm Vacuum pump connecting port Thickness : 0.80mm...
  • Page 21 FILE NO. SVM-07018 42NQV012E / 38NYV012E Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Pressure measurement Max. : 15 m Deoxidized copper pipe Gauge attaching port Outer dia. : 6.35 mm Vacuum pump connecting port Thickness : 0.8 mm Sectional shape Deoxidized copper pipe of heat insulator...

  • Page 22: Operation Data

    FILE NO. SVM-07018 6-2. Operation Data 42NQV009E / 38NYV009E <Cooling> Temperature Heat e hang Standar Indoor Outdoor Compressor condition ( pipe temp. °C) pressure olution P (MP mode mode (rps) Indoor Outdoor T1 ( °C) T2 ( °C) 27/19 High...

  • Page 23: Control Block Diagram

    FILE NO. SVM-07018 7. CONTROL BLOCK DIAGRAM 7-1. Indoor Unit Indoor Unit Control Panel M.C.U. Functions Operation Heat Exchanger Sensor • Louver Control Display • 3-minute Delay at Restart for Compressor Timer Temperature Sensor Display • Motor Revolution Control DE-FROST Infrared Rays Signal Receiver Sign Display Filter...

  • Page 24: Outdoor Unit

    FILE NO. SVM-07018 7-2. Outdoor Unit (Inverter Assembly) – 23 –...

  • Page 25: Operation Description

    FILE NO. SVM-07018 8. OPERATION DESCRIPTION (1) Role of indoor unit controller 8-1. Outline of Air Conditioner Control The indoor unit controller judges the operation This air conditioner is a capacity-variable type air commands from the remote controller and conditioner. The capacity proportional control assumes the following functions.
  • Page 26 • Outdoor temperature • Existence of protective circuit operation 21 to 64 COOL For transferring of these signals, the indoor unit 42NQV009E 21 to 83 HEAT controller monitors the contents of signals, and judges existence of trouble occurrence. Contents of judgment are described below.
  • Page 27 Table 8-1-2 FAN TAP Cooling OPERATION MODE Heat 1300 1250 1200 1140 1060 1000 880 860 750 720 42NQV009E 610 570 310 260 490 460 390 380 Air flow volume (m 1350 1210 1110 1010 930 1290 780 720 42NQV012E...

  • Page 28: Description Of Operation Circuit

    FILE NO. SVM-07018 (1) Cooling capacity control 8-2. Description of Operation Circuit • The cooling capacity and room temperature • Turning [ON] the breaker flashes the ON/OFF are controller by changing the compressor lamp. (1Hz) motor speed according to both the difference This is the display of power-ON (or notification of between the temperature detected by the room power failure).
  • Page 29 FILE NO. SVM-07018 5) Control 5 (E zone) : Nornal down of motor (4) Louver control The vertical air flow louvers are automatically set speed. to horizontal or cool memory position. When TD detect value is 112°C or higher, When temperature of indoor heat exchanger operating motor speed is down.
  • Page 30 FILE NO. SVM-07018 8-2-2. DRY operation [Basic control] (The Remote Control [ ] Button is Set to the DRY Position) −0.5 • temp. Once the setting is made, the operation mode is −1 memorized in the microcomputer so that the same −1.5 −2 operation can be effected thereafter simply by...
  • Page 31 FILE NO. SVM-07018 [In starting and in stability] In starting In stability 10.8A 16.0 • Until 12 minutes • When 12 to 25 15.5 passed after minutes passed operation start after operation 10.8A 11.0 • When 12 to 25 start and room 10.5 minutes passed temp.
  • Page 32 FILE NO. SVM-07018 2) Defrost operation A-Zone Operation of the compressor is stopped once, -0.5 turn off power coupler for 4-way valves after -1.0 10 seconds, and then exchange the 4-way -1.5 B-Zone Zone 38YVE009 38YVE012 -2.0 valves. -2.5 After 20 seconds, restart operation of the C-Zone A-Zone 21 rps...

  • Page 33: Temporary Operation

    FILE NO. SVM-07018 8-2-4. Automatic operation Table 8-3-1 As shown in Fig. 8-2-9, the operation mode Control (COOL, DRY, HEAT) is selected according to the OFF → ON Preset temperature and room temperature when Temporary Auto operation start the operation has started. After pushing button Auto Restart −...

  • Page 34: Auto Restart Function

    FILE NO. SVM-07018 8-4. Auto Restart Function 8-4-1. How to set auto restart function To set the auto restart function, proceed as follows: The indoor unit is equipped with an automatic The power supply to the unit must be on; the function restarting function which allows the unit to restart will not set if the power is off.

  • Page 35: Filter Check Lamp

    FILE NO. SVM-07018 8-4-2. How to cancel auto restart function To cancel auto restart function, proceed as follows: Repeat the setting prodedure: the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote control after the main power supply is turned off.
  • Page 36 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 37 FILE NO. SVM-07018 9-1-1. Installation Diagram of Indoor and Outdoor Units For the rear left and left Before installing the piping Hook wireless remote control Installation plate • With the remote control cover Wall open, load the batteries supplied correctly, observing their polarity.
  • Page 38 FILE NO. SVM-07018 9-1-2. Optional installation parts Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅6.35 mm each Gas side ∅ 9.52 mm Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit> 500 mm Air inlet 97 mm...
  • Page 39 FILE NO. SVM-07018 9-1-3. Accessory and installation parts Part Part Part Part name (Q’ty) Part name (Q’ty) Part name (Q’ty) Pan head wood screw ∅ Installation plate x 1 Remote control holder x 1 3.1 x 16 x 2 Wireless remote control x 1 Active Carbon Cleaning filter x 2 Drain nipple* x 1 The part marked with asterisk ( * ) is packaged with the...
  • Page 40 FILE NO. SVM-07018 9-1-4. 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 41 FILE NO. SVM-07018-1 9-2-2. Cutting a hole and mounting installation 9-2. Indoor Unit plate 9-2-1. Installation place <Cutting a hole> • A place which provides the spaces around the When installing the refrigerant pipes from the rear. indoor unit as shown in the above diagram. •...
  • Page 42 FILE NO. SVM-07018 <When the installation plate is directly mounted on 9-2-3. Electrical work the wall> 1. The supply voltage must be the same as the rated 1. Securely fit the installation plate onto the wall by voltage of the air conditioner. screwing it in the upper and lower parts to hook up 2.
  • Page 43 FILE NO. SVM-07018 9-2-4. Wiring connection 9-2-5. Piping and drain hose installation <How to connect the connecting cable> <Piping and Drain Hose Forming> Wiring of the connecting cable can be carried out * Since dewing results in a machine trouble, make without removing of the front panel.
  • Page 44 FILE NO. SVM-07018 <How to fix the Drains Cap> <Left-hand connection with piping> 1) Insert hexagonal wrench (∅4 mm) in a center head. Bend the connecting pipe so that it is laid within 43 mm above the wall surface. If the connecting pipe is laid exceeding 43 mm above the wall surface, the indoor unit may unstably be set on the wall.
  • Page 45 FILE NO. SVM-07018 9-2-6. Indoor unit fixing 2. Put water in the drain pan and make sure that the water is drained out of doors. 1. Pass the pipe through the hole in the wall, and hook 3. When connecting extension drain hose, insulate the the indoor unit on the installation plate at the upper connecting part of extension drain hose with shield hooks.
  • Page 46 FILE NO. SVM-07018 9-3. Outdoor Unit 9-3-2. Refrigerant piping connection <Flaring> 9-3-1. Installation place • A place which provides the spaces around the 1. Cut the pipe with a pipe cutter. outdoor unit as shown in the left diagram. • A place which can bear the weight of the outdoor unit and does not allow an increase in noise level Roughness Obliquity...
  • Page 47 FILE NO. SVM-07018-1 (Unit : Nám) 9-3-3. 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 AIR PURGE 16 to 18 (1.6 to 1.8 kgf·m) Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump.
  • Page 48 (0.9 to 1.0 kgf·m) Earth line Earth line Connecting cable Power cord Hexagonal wrench is required. Fig. 9-3-9 Model 42NQV009E / 42NQV012E Power source 50 Hz, 220 – 240 V~ Single phase Maximum Fig. 9-3-8 running current Installation fuse 9-3-4. Wiring connection rating 1.

  • Page 49: Installation Procedure

    FILE NO. SVM-07018 9. INSTALLATION PROCEDURE 9-1. Safety Cautions For general public use Power supply cord of parts of appliance for outdoor use shall be at least polychloroprene sheathed flexible cord (design H07RN-F), or cord designation 245 IEC66. (1.5 mm or more).

  • Page 50: Indoor Unit

    FILE NO. SVM-07018 9-3-5. Gas leak test 9-3-7. Auto restart setting This product is designed so that, after a power failure, Check places for it can restart automatically in the same operating mode indoor unit (Flare as before the power failure. nut connection) Valve cover Information...

  • Page 51: Outdoor Unit

    FILE NO. SVM-07018 10. HOW TO DIAGNOSE THE TROUBLE The pulse modulating circuits are mounted to both NOTE: indoor and outdoor units. Therefore, diagnose troubles A large-capacity electrolytic capacitor is used in the according to the diagnosis procedure as described outdoor unit controller (inverter).

  • Page 52: Primary Judgment

    FILE NO. SVM-07018 10-1-3. Operation which is not a trouble (Program operation) For controlling the air conditioner, the program operations are built in the microcomputer as described in the following table. If a claim is made for running operation, check whether or not it meets to the contents in the following table.
  • Page 53 FILE NO. SVM-07018 10-3. Judgement by Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section. Table 10-3-1 Lamps Self-diagnosis...

  • Page 54: Self-Diagnosis By Remote Controller

    FILE NO. SVM-07018-1 10-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to G in Table 10-3-1, exchanger the self-diagnosis by the remote control. (2) When the remote control is set to the service mode, the indoor controller diagnoses the operation condition and indicate the information of the self-diagnosis on the display of the remote...
  • Page 55 FILE NO. SVM-07018 10-4-2. Caution at servicing (1) After servicing, push the [START/STOP] button to return to the normal mode. (2) After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.
  • Page 56 FILE NO. SVM-07018 Block distinction Operation of diagnosis function Judgement and action Check Check Air conditioner Block Cause of operation Remark code code status Outdoor Inverter over-current All off Displayed when Even if trying operation again, all P.C. board protective circuit operates. error is detected.

  • Page 57: Judgement Of Trouble By

    FILE NO. SVM-07018 10-5. Judgement of Trouble by Every Symptom 8-5-1. Indoor unit (Including remote controller) (1) Power is not turned on (Does not operate entirely) Turn off power Operation supply once, and 5 second later, turn it Check item on again.
  • Page 58 FILE NO. SVM-07018 (2) Power is not turned on though Indoor P.C. board is replaced <Confirmation procedure> Turn on power supply. Is wired correctly to white and black Correct wiring. Does operation lamp flash? lead wires of terminal board? To item of “Power is not turned on”.
  • Page 59 FILE NO. SVM-07018 (3) Only the indoor fan does not operate. <Check procedure> Shut off the power supply once. Turn ON the power supply. Does the fan stop in Control P.C. board is defective. Replace the P.C. board. no operating status? Start the operation with low fan setting in cool operation.
  • Page 60 FILE NO. SVM-07018 (4) Troubleshooting for remote control The unit does not beep at all. Press [START/STOP] OPERATION lamp on indoor button. unit is not indicated. Is transmission mark indicated? Press RESET button on remote control with tip of pencil. Is receiver on indoor unit exposed to direct sunlight?
  • Page 61 FILE NO. SVM-07018 10-5-2. Wiring Failure (Interconnected and serial signal wire) (1) Outdoor unit does not operate. 1) Is the voltage between 2 and 3 of the indoor terminal block varied? Confirm that transmission from indoor to outdoor is correctly performed based on the following diagram. NOTE: •...

  • Page 62: Check Code 1C (Miswiring In Indoor/Outdoor Units) And 1E

    FILE NO. SVM-07018 10-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E <Check procedure> Operation Check item Gas leakage, disconnection of Discharge temp. TS/TC sensors (Check code error, gas leakage Conceivable principle 02, 1C) (Check code 03, 1E) cause Measure Item by symptoms Valve drive check...

  • Page 63: How To Diagnose Trouble In Outdoor Unit

    FILE NO. SVM-07018 10-7. How to Diagnose Trouble in Outdoor Unit 10-7-1. Summarized inner diagnosis of inverter assembly Diagnosis/Process flowchart Item Contents Summary Preparation Turn “OFF” the power Remove breaker, and remove 3P connector of compressor. connector which connects inverter and compressor. •...

  • Page 64: How To Check Simply The Main Parts

    FILE NO. SVM-07018 Diagnosis/Process flowchart Item Contents Summary → OK if 10MΩ or more Check Check winding resistance → OK if 0.51Ω → between phases of compressor, and 0.57Ω (Check by a resistance between digital tester.) outdoor frames by using a Check tester.
  • Page 65 FILE NO. SVM-07018 (3) Checking procedure. Table 10-8-1 Causes Procedure Check Point (Symptom) Shut off the power supply and 1. Is the fuse blown? 1. Application of shock voltage. remove the P.C. board assembly Overload by short-circuit of the from the electronic parts base. parts.
  • Page 66 FILE NO. SVM-07018 10-8-2. P.C. board layout WP-004 Bottom View [1] Sensor characteristic table TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TO : Outdoor temp. sensor TA, TC, TO, TE TE : Outdoor heat exchanger temp. sensor Temperature (°C) –...
  • Page 67 FILE NO. SVM-07018 10-8-3. Indoor unit (Other parts) Part name Checking procedure Room temp. (TA) sensor Disconnect the connector and measure the resistance value with Heat exchanger (TC) sensor tester. (Normal temp.) Temperature 10°C 20°C 25°C 30°C 40°C Sensor 20.7 12.6 10.0 TA, TC (kΩ)
  • Page 68 FILE NO. SVM-07018 10-8-5. Outdoor unit Part name Checking procedure Compressor Measure the resistance value of each winding by using the tester. (Model : DA89X1C-23FZ) Position Resistance value Red - White White - Black 0.51 to 0.57Ω Black - Red White Black Under 20°C...
  • Page 69 FILE NO. SVM-07018 10-8-6. Checking method for each part Part name Checking procedure Electrolytic capacitor (For 1. Turn OFF the power supply breaker. raising pressure, smoothing) 2. Discharge all four capacitors completely. 3. Check that safety valve at the bottom of capacitor is not broken. 4.

  • Page 70: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    FILE NO. SVM-07018 10-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 1. Symptom • Outdoor fan motor does not rotate. • Outdoor fan motor stops within several ten seconds though it starts rotating. • Outdoor fan motor rotates or does not rotate according to the position where the fan stopped., etc. 2.

  • Page 71: How To Replace The Main Parts

    FILE NO. SVM-07018 11. HOW TO REPLACE THE MAIN PARTS 11-1. Indoor Unit Part name Procedures Remarks Front panel How to remove the front panel 1) Stop operation of the air conditioner and turn off its main power supply. 2) Pull the air inlet grille toward you to open it and remove the air inlet grille.
  • Page 72 FILE NO. SVM-07018 Part name Procedures Remarks Heat exchanger 1) Remove the front panel, electrical part and the horizontal louver with the procedure 3. 2) Remove the pipe holder on the rear side of the main unit. 3) Remove 2 screws of the heat exchanger on the base bearing side.
  • Page 73 FILE NO. SVM-07018 Part name Procedures Remarks Cross flow fan 1) Remove the front panel, electrical part, horizontal louver and the heat exchanger with 2 2-Screws (R) the procedure 4. 2) Remove 2 screws of the band motor (L) and other 2 screws of the band motor (R) and then remove the cross flow fan.

  • Page 74: Microcomputer

    FILE NO. SVM-07018 11-2. Microcomputer Part name Procedures Remarks Common 1) Turn the power supply off to stop the operation Replace the thermal fuse, terminal procedure of air conditioner. block, microcomputer ass’y and the 2) Remove the front panel. P.C. board ass’y •...

  • Page 75: Outdoor Unit

    FILE NO. SVM-07018 11-3. Outdoor Unit Part name Procedures Remarks Common 1. Detachment Upper cabinet procedure 1) Stop operation of the air conditioner, and turn off the main switch and breaker of the Wiring cover air conditioner. 2) Remove the valve cover. (ST1T∅4 x 10s Valve cover 1 pc) •...
  • Page 76 FILE NO. SVM-07018 Part name Procedures Remarks 1) Perform work of item 1 of 1. Inverter Inverter cover assembly 2) Remove screw (ST1T∅4 x 10s 2 pc.) of the P. C. board upper part of the front cabinet. (Soldered surface) •...
  • Page 77 FILE NO. SVM-07018 Part name Procedures Remarks Control board 1) Disconnect lead wires and connectors CN602 CN601 assembly connected from the control board CN300 CN701 assembly to other parts. CN500 1. Lead wires • Connection with terminal block : 3 wires (Black, White, Orange) •...
  • Page 78 FILE NO. SVM-07018 Part name Procedures Remarks 1) Perform work of item 1 of 1 and 1 of 2. Fan motor 2) Remove the flange nut fixing the fan motor Fan motor and the propeller fan. Propeller fan • Flange nut is loosened by turning clockwise.
  • Page 79 FILE NO. SVM-07018 Part name Procedures Remarks Fan guard 1. Detachment 1) Perform work of item 1 of 1 and 1 of 2. Requirement: Perform the work on a corrugated cardboard, cloth, etc. to prevent scratches to the product. 2) Remove the front cabinet, and place it down so that the fan guard side faces downwards.
  • Page 80 FILE NO. SVM-07018 Part name Procedures Remarks Replacement of 1) Cut the sensor 100 mm longer than old Cutting here Thermal temperature one. sensor part Connector sensor for 2) Cut the protective tube after pulling out it servicing only (200 mm). 3) Move the protective tube toward the Cutting here Common service...

  • Page 81: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST 12-1. Indoor Unit (E-Parts Assy) Location Part Location Part Description Description 43T69319 TEMPERATURE SENSOR 43T69079 PC BOARD ASSY;WRS-LED 43T60002 TERMINAL BLOCK; 3P 43T69585 PC BOARD (42NQV009E) 43T69320 TEMPERATURE SENSOR 43T69665 PC BOARD (42NQV012E) 43T62003 CORD CLAMP − 80 −...

  • Page 82: Indoor Unit

    FILE NO. SVM-07018 12-2. Indoor Unit Location Part Location Part Description Description 43T00391 FRONT PANEL ASSY 43T49302 PLATE OF EVA SEAL 43T09419 INLET GRILLE ASSY 43T49006 HOLDER FOR PLATE 43T03341 BACK BODY ASSY 43T22308 ASM-M-BEARING 43T80301 AIR FILTER 43T39301 BASE; BEARING 43T09328 HORIZONTAL LOUVER 43T20322...

  • Page 83: Outdoor Unit (38Nyv009E)

    FILE NO. SVM-07018 12-3. Outdoor Unit (38NYV009E) Location Part Location Part Description Description 43T19334 FAN GUARD 43T49327 CUSHION,RUBBER 43T20324 PROPELLER FAN 43T50316 BIMETAL THERMO 43T00482 FRONT CABINET 43T41358 COMPRESSOR(Made in China) 43T43403 CONDENSOR ASSEMBLY 43T19337 PACKED VALVE COVER 43T62323 TERMINAL COVER 43T00481 UPPER CABINET 43T19336...

  • Page 84: Outdoor Unit (38Nyv012E)

    FILE NO. SVM-07018 12-4. Outdoor Unit (38NYV012E) Location Part Location Part Description Description 43T19334 FAN GUARD 43T50316 BIMETAL THERMO 43T20324 PROPELLER FAN 43T41358 COMPRESSOR(Made in China) 43T00492 FRONT CABINET 43T19337 PACKED VALVE COVER 43T43415 CONDENSER ASSEMBLY 43T00481 UPPER CABINET 43T62323 TERMINAL COVER 43T00448 FIXING PLATE VALVE...

  • Page 85: Outdoor Unit (E-Parts Assy)

    FILE NO. SVM-07018 12-5. Outdoor Unit (E-Parts Assy) Location Part Location Part Description Description 43T62320 HEATSINK 43T60326 FUSE 43T69620 ASM-PCB-SERV (38NYV009E) 43T60377 TEMPERATURE SENSOR 43T69664 ASM-PCB-SERV (38NYV012E) 43T50304 SENSOR;HEAT EXCHANGER 43T60352 TERMINAL BLOCK; 6P 43T62313 BASE-PLATE-PC 43T55325 CAPACITOR; PLASTIC-FILM − 84 −...
  • Page 86 FILE NO. SVM-03008 – 87 –...

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