Related Manuals for Toshiba RAS-13NKV-E
Summary of Contents for Toshiba RAS-13NKV-E
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Page 1: Air Conditioner
FILE NO. SVM-05027-1 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-13NKV-E / RAS-13NAV-E RAS-13NKV-A / RAS-13NAV-A RAS-16NKV-E / RAS-16NAV-E RAS-16NKV-A / RAS-16NAV-A June, 2005... -
Page 2: Table Of Contents
FILE NO. SVM-05027 CONTENTS SPECIFICATIONS Specifications Operation Characteristic Curve Capacity Variation Ratio According to Temperature REFRIGERANT R410A Safety During Installation/Servicing Refrigerant Piping Installation Tools 2-4. Recharging of Refrigerant 2-5. Brazing of Pipes CONSTRUCTION VIEWS Indoor Unit Outdoor Unit WIRING DIAGRAM Indoor Unit (For 13NKV) Indoor Unit (For 16NKV) Outdoor Unit... - Page 3 FILE NO. SVM-05027 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...
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Page 4: Specifications
FILE NO. SVM-05027 1. SPECIFICATIONS 1-1. Specifications Unit model RAS-13NKV-E (A) Indoor RAS-13NAV-E (A) Outdoor Cooling capacity (kW) Cooling capacity range (kW) 1.1− 4.0 Heating capacity (kW) Heating capacity range (kW) 1.1− 5.8 Power supply 220− 240V− 1Ph− 50/60Hz Indoor... - Page 5 FILE NO. SVM-05027 Unit model RAS-16NKV-E (A) Indoor RAS-16NAV-E (A) Outdoor Cooling capacity (kW) 4.62 Cooling capacity range (kW) 1.2− 5.2 Heating capacity (kW) Heating capacity range (kW) 1.3− 7.4 Power supply 1 Ph, 50Hz~ 220− 240V / 60Hz~220V Indoor Operation mode Cooling Heating...
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Page 6: Operation Characteristic Curve
FILE NO. SVM-05027 1-2. Operation Characteristic Curve <Cooling> <Heating> 16NAV 16NAV Conditions Conditions Indoor : DB 27 ° C/WB 19 ° C Indoor : DB 20 ° C Outdoor : DB 35 ° C Outdoor : DB 7 ° C/WB 6 ° C Air flow : High Air flow : High Pipe lenght : 5 m... -
Page 7: Refrigerant R410A
FILE NO. SVM-05027 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-05027 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-05027 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-05027 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.
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Page 11: Tools
FILE NO. SVM-05027 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-05027 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-05027 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-05027 (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.
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Page 15: Construction Views
FILE NO. SVM-05027 3. CONSTRUCTION VIEWS 3-1. Indoor Unit Front panel Air inlet Air filter Heat exchanger Air outlet Knock out system Knock out system Hanger Connecting pipe (0.43m) Drain hose (0.54m) (Flare ∅6.35) Hanger Connecting pipe (0.33m) (For 13 series ; Flare ∅9.52 For 16 series ;... -
Page 16: Outdoor Unit
FILE NO. SVM-05027 3-2. Outdoor Unit 32.5 A Detail drawing (Back Leg) B Detail drawing (Front Leg) ∅6 Hole ∅6 Hole ∅11 x 14 Hole R5.5 ∅30 Drain outlet 2-∅11 x 14 Hole (For ∅8-∅10 anchor bolt) ∅436 FAN GUARD COVER PV Electrical part cover... -
Page 17: Wiring Diagram
FILE NO. SVM-05027 4. WIRING DIAGRAM 4-1. Indoor Unit (For 13NKV) COLOR INDICATION TERMINAL BROWN INDOOR OUTDOOR ２ ３ BLOCK WHITE UNIT UNIT YELLOW BLUE BLACK GRAY PINK W HI ORANGE GRN&YEL GREEN & YELLOW GREEN CN24 CN21 CN23 CN01 LINE (BLU) FILTER... -
Page 18: Indoor Unit (For 16Nkv)
FILE NO. SVM-05027 4-2. Indoor Unit (For 16NKV) COLOR INDICATION INDOOR OUTDOOR TERMINAL BROWN UNIT UNIT BLOCK WHITE YELLOW BLUE BLACK GRAY PINK ORANGE GRN&YEL GREEN & YELLOW GREEN CN21 CN24 CN23 CN01 FAN MOTOR CN10 (BLU) (WHI) HEAT EXCHANGER SENSOR DC MOTOR CN03... - Page 19 FILE NO. SVM-05027 – 18 –...
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Page 20: Specification Of Electrical Parts
FILE NO. SVM-05027 5. SPECIFICATION OF ELECTRICAL PARTS 5-1. Indoor Unit (For 13NKV) Parts name Type Specifications Fan motor (for indoor) SKF-220-20-4A-1 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... -
Page 21: Outdoor Unit (For 13Nav)
FILE NO. SVM-05027 5-3. Outdoor Unit (For 13NAV) Parts name Model name Rating SC coil ADR2516-0R6TB 15A, 0.6mH (Noise filter) ADR2510-020 T4B 20A, 0.15mH Primary side DC280V, Secondary DC-DC transformer SWT-72 side 7.0 V x 1, 12V x 1, 17V x 2 Reactor CH-57-Z-T L=10mH, 16A x 2... -
Page 22: Outdoor Unit (For 16Nav)
FILE NO. SVM-05027 5-4. Outdoor Unit (For 16NAV) Parts name Model name Rating SC coil ADR2516-0R6TB 15A, 0.6m H (Noise filter) ADR2520-R15TB 20A, 0.15mH Primary side DC280V, Secondary DC-DC transformer SWT-72 side 7.0 V x 1, 12 V x 1, 17V x 2 Reactor CH-57-Z-T L=10mH, 16A x 2... -
Page 23: Refrigerant Cycle Diagram
FILE NO. SVM-05027 6. REFRIGERANT CYCLE DIAGRAM 6-1. Refrigerant Cycle Diagram RAS-13NKV-E / RAS-13NAV-E RAS-13NKV-A / RAS-13NAV-A 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... - Page 24 FILE NO. SVM-05027 RAS-16NKV-E / RAS-16NAV-E RAS-16NKV-A / RAS-16NAV-A 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...
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Page 25: Operation Data
FILE NO. SVM-05027 6-2. Operation Data RAS-13NKV-E / RAS-13NAV-E RAS-13NKV-A / RAS-13NAV-A <Cooling> Temperature Heat exchanger Standard Indoor Outdoor Compressor condition ( °C) pipe temp. pressure revolution P (MPa) mode mode (rps) Indoor Outdoor T1 (°C) T2 (°C) 27/19 35/−... -
Page 26: Control Block Diagram
FILE NO. SVM-05027 7. CONTROL BLOCK DIAGRAM 7-1. Indoor Unit Indoor Unit Control Panel M.C.U Functions Operation Heat Exchanger Sensor • Louver Control Display Timer • 3-minute Delay at Restart for Compressor Temperature Sensor Display Filter • Motor Revolution Control Infrared Rays Signal Receiver Sign Display PRE DEF. -
Page 27: Outdoor Unit (Inverter Assembly)
FILE NO. SVM-05027 7-2. Outdoor Unit (Inverter Assembly) – 26 –... -
Page 28: Operation Description
FILE NO. SVM-05027 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 29: Table
FILE NO. SVM-05027 (3) Contents of operation command signal (Serial 8-1-1. Capacity control signal) from indoor unit controller to outdoor unit The cooling and heating capacity is varied by changing controller compressor motor speed. The inverter changes The following three types of signals are sent from compressor motor speed by changing the indoor unit controller. - Page 30 FILE NO. SVM-05027 8-1-4. Prevent-freezing control (2) Swing If the [SWING] button is pressed during running The indoor heat exchanger sensor detects refrigerant operation, vertical air flow louvers start swinging. vapor temperature in COOL/DRY operation. If the When the [SWING] button is pushed, swinging stops. temperature is below the specified value, compressor motor speed is reduced so that operation is performed 8-1.7.
- Page 31 FILE NO. SVM-05027 8-1-8. Outdoor fan control Although the outdoor fan motor drives the outdoor fan by non-step variable system of the revolution speed, the revolution speed is restricted to three steps on the convenience of controlling. If a strong wind is lashing outside of the room, the operation may be continued as the outdoor fan stops in order to protect the outdoor fan motor.
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Page 32: Description Of Operation Circuit
FILE NO. SVM-05027 (1) Cooling capacity control 8-2. Description of Operation Circuit • The cooling capacity and room temperature • Turning [ON] the breaker flashes the operation 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 33 FILE NO. SVM-05027 (4) Limit for maximum compressor motor speed 5) Control 5 (E zone) : Nornal down of motor by indoor fan speed speed. When outdoor temperature sensor detected 32°C When TD detect value is 112°C or higher, or lower, and indoor heat exchanger sensor operating motor speed is down.
- Page 34 FILE NO. SVM-05027 2) Changing of air flow (Fan setting : AUTO) (8) COMFORT SLEET operation control. When the Hi POWER is started, the fan of the When the [COMFORT SLEEP] button is indoor unit operates at higher air flow level than pushed, the ECONO operation activate normal air flow AUTO (normal air flow AUTO is together with the timer OFF function.
- Page 35 FILE NO. SVM-05027 8-2-2. DRY operation [Basic control] (The Remote Control [MODE] 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 36 FILE NO. SVM-05027 [In starting and in stability] 16NAV / 13NAV In starting In stability 9.8A / 10.8A 16.0 • Until 12 minutes • When 12 to 25 15.5 passed after minutes passed 9.8A / 10.8A operation start after operation 11.0 •...
- Page 37 FILE NO. SVM-05027 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 13NAV 16NAV -2.0 valves. -2.5 After 20 seconds, restart operation of the C-Zone A-Zone 20 rps...
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Page 38: Temporary Operation
FILE NO. SVM-05027 (9) QUIET operation control. 8-3. Temporary Operation When the [QUIET] button is pushed, the fan is • Temporary Auto operation, existence of Auto restricted the revolution speed at L- level until Restart, and Temporary Cooling operation can be the [QUIET] button is pushed once again set by the [RESET] button of the indoor (cancel QUIET operation). -
Page 39: Auto Restart Function
FILE NO. SVM-05027 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 40: Filter Check Lamp
FILE NO. SVM-05027 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 41: Remote Control And Its Functions
FILE NO. SVM-05027 8-6. Remote control ECO timer button [ECO] 8-6-1. Remote control and its functions Push this button to start the ECO operation. 1 1 1 1 Infrared signal emitter (A receiving been is heard) Transmits a signal to the indoor unit. Quiet button [QUIET] 2 2 2 2 Push this button to start the quiet operation. - Page 42 FILE NO. SVM-05027 8-6-2. Names and functions of indications on remote cont r ol Display All indications, except for clock time indication, are indicated by push the [ ] button. 1 1 1 Transmission mark This transmission mark ( ) indicates when the remote control transmits signals to the indoor unit. 2 2 2 2 Mode display Indicates the current operation mode.
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Page 43: Installation Procedure
FILE NO. SVM-05027 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) CAUTION New Refrigerant Air conditioner Installation... - Page 44 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 TOSHIBA dealer immediately. CAUTION • Exposure of unit to water or other moisture before installation could result in electric shock.
- Page 45 FILE NO. SVM-05027 9-1-1. Installation Diagram of Indoor and Outdoor Units For the rear left and left piping Hook Installation plate Wall Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation. Shield Do not allow the drain hose pipe to get slack.
- Page 46 FILE NO. SVM-05027-1 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 (13 Series) Gas side ∅ 12.7 mm (16 Series) Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit>...
- Page 47 FILE NO. SVM-05027-1 9-1-3. Accessory and installation parts Part Part Part Part name (Q’ty) Part name (Q’ty) Part name (Q’ty) Mounting screw ∅4 x 25 s x 6 Installation plate x 1 Remote control holder x 1 Flat head wood screw ∅3.1 x 16 s x 2 Wireless remote control x 1 Sasa-Zeolite Plus filter x 1...
- Page 48 FILE NO. SVM-05027 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) •...
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Page 49: Indoor Unit
FILE NO. SVM-05027 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 50 FILE NO. SVM-05027 <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 51 FILE NO. SVM-05027 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 52 FILE NO. SVM-05027 <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 53 FILE NO. SVM-05027 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.
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Page 54: Outdoor Unit
FILE NO. SVM-05027 9-3-2. Refrigerant piping connection 9-3. Outdoor Unit <Flaring> 9-3-1. Installation place 1. Cut the pipe with a pipe cutter. • A place which provides the spaces around the outdoor unit as shown in the left diagram. • A place which can bear the weight of the outdoor Roughness Obliquity Warp... - Page 55 FILE NO. SVM-05027 (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 16 to 18 (1.6 to 1.8 kgf·m) AIR PURGE Evacuate the air in the connecting pipes and in the ∅...
- Page 56 FILE NO. SVM-05027 <Packed valve handling precautions> <Stripping length of connection cable> Open the valve stem all the way out; but do not try Terminal block to open it beyond the stopper. Securely tighten the valve stem cap with torque in the following table: Gas side 30 to 42 N·m...
- Page 57 FILE NO. SVM-05027 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...
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Page 58: How To Diagnose The Trouble
FILE NO. SVM-05027 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 control (inverter). -
Page 59: Primary Judgment
FILE NO. SVM-05027 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 60: Judgment By Flashing Led Of Indoor Unit
FILE NO. SVM-05027 10-3. Judgment 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 Check Item... -
Page 61: Self-Diagnosis By Remote Control (Check Code)
FILE NO. SVM-05027 10-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to G in Table 9-3-1, 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 62 FILE NO. SVM-05027 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 63 FILE NO. SVM-05027 Block distinction Operation of diagnosis function Judgment and action Check Check Air conditioner Block Cause of operation Remarks code code status Displayed when Ondoor Inverter over-current All off Even if trying operation again, all P .C. protective circuit operates. error is detected.
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Page 64: Judgement Of Trouble By Every Symptom
FILE NO. SVM-05027 10-5. Judgement of Trouble by Every Symptom 10-5-1. Indoor unit (Including remote controller) (1) Power is not turned on (Does not operate entirely) For 13NKV Turn off power Operation supply once, and 5 second later, turn it Check item on again. - Page 65 FILE NO. SVM-05027 (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 66 FILE NO. SVM-05027 (3) Only the indoor fan does not operate. For 13NKV <Check procedure> Shut off the power supply once. Turn 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 67 FILE NO. SVM-05027 For 16NKV <Preliminary check> 1 Is it possible to detect the power supply voltage (200 – 240V) 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 Operation approximately 5 minutes after it is turned on, to prevent a cold air Check item...
- Page 68 FILE NO. SVM-05027 (4) Indoor fan motor starts rotating by turning on power supply alone. (For 16k) <Cause> The IC is built in the indoor fan motor. Therefore the P .C. board is also mounted to the inside of the motor. If the P.C.
- Page 69 FILE NO. SVM-05027 (5) Troubleshooting for remote control The unit does not beep at all. Press START/STOP OPERATION lamp on button. indoor unit is not indicated. Is transmission mark indicated? Press RESET button on remote control Is receiver on with tip of pencil. indoor unit exposed to direct sunlight? Does indoor unit...
- Page 70 FILE NO. SVM-05027 10-5-2. Wiring Failure (Interconnecting and serial signal wire) (1) Outdoor unit does not operate. 1) Is the voltage between indoor terminal block 2 and 3 varied? Confirm that transmission from indoor to outdoor is correctly performed based on the following diagram. NOTE: •...
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Page 71: Check Code 1C (Miswiring In Indoor/Outdoor Units) And 1E
FILE NO. SVM-05027 10-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E <Check procedure> Gas leakage, Discharge temp. error, disconnection of TS/TC gas leakage sensors (Check code 02, 1C) (Check code 03, 1E) Valve drive check Is coil of the pulse modulation valve Set it correctly. -
Page 72: How To Diagnose Trouble In Outdoor Unit
FILE NO. SVM-05027 10-7. How to Diagnose Trouble in Outdoor Unit 10-7-1. Summarized inner diagnosis of inverter assembly Table 10-7-1 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 73: How To Check Simply The Main Parts
FILE NO. SVM-05027 Diagnosis/Process flowchart Item Contents Summary Check Check winding resistance between phases of compressor, and resistance between outdoor frames by using a tester. Check • Is not grounded. → OK if 10MΩ or more → winding of OK if 0.51Ω → 0.57Ω •... - Page 74 FILE NO. SVM-05027 (3) Checking procedure. For 13NKV Table 10-6-1 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.
- Page 75 FILE NO. SVM-05027 For 16NKV Table 10-8-1 Procedure Check point (Symptom) Causes Shut off the power supply and 1. Is the fuse blown? Application of shock voltage. remove the P.C. board assembly Overload by short-circuit of the from the electronic parts base. parts.
- Page 76 FILE NO. SVM-05027 <Sensor characteristic table> TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TA, TC, TO, TGa, TGb, TGc, TGd TO : Outdoor temp. sensor TGa : Gas side temp. sensor TGb : Gas side temp.
- Page 77 FILE NO. SVM-05027 10-8-3. Indoor unit (Other parts) Part name Checking procedure Room temp. (TA) sensor Disconnect the connector and measure the resistance value with tester. Heat exchanger (TC) sensor (Normal temp.) Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC (kΩ) 20.7 12.6 10.0...
- Page 78 FILE NO. SVM-05027 Outdoor temperature sensor Disconnect the connector, and measure resistance value with the tester. (TO), discharge temperature (Normal temperature) sensor (TD), suction temperature Temperature sensor (TS), outdoor heat 10°C 20°C 30°C 40°C 50°C Sensor exchanger temperature sensor (TE) TA, TC (k ) TGa : Heat pump model only.
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Page 79: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad
FILE NO. SVM-05027 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. Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”... -
Page 80: How To Replace The Main Parts
FILE NO. SVM-05027 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 81 FILE NO. SVM-05027 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 82 FILE NO. SVM-05027 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.
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Page 83: Microcomputer
FILE NO. SVM-05027 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 84 FILE NO. SVM-05027 <P.C. board layout> (For 16NKV) Fuse CN10 CN13 RY01 DB01 IC03 IC02 CN04 Top View IC01 Top View – 83 –...
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Page 85: Outdoor Unit
FILE NO. SVM-05027 11-3. Outdoor Unit Part name Procedures Remarks 1. Detachment Common Upper cabinet 1) Stop operation of the air conditioner, and turn off procedure Wiring cover the main switch of the breaker for the air conditioner. 2) Remove the valve cover. (ST1T∅4 x 10s 1 pc.) Valve cover •... - Page 86 FILE NO. SVM-05027 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 87 FILE NO. SVM-05027 Part name Procedures Remarks 1) Disconnect lead wires and connectors Control board connected from the control board assembly CN701 CN601 CN603 assembly to other parts. CN600 1. Lead wires CN700 CN500 Connection with terminal block : 3 wires (Black, White, Orange) CN602 CN300 Connection with compressor :...
- Page 88 FILE NO. SVM-05027 Part name Procedures Remarks 1) Perform work of item 1 of 1 and 2. Fan motor Fan motor 2) Remove the flange nut fixing the fan motor and the propeller fan. Propeller fan • Flange nut is loosened by turning clockwise. (To tighten the flange nut, turn counterclock- wise.) 3) Remove the propeller fan.
- Page 89 FILE NO. SVM-05027 Part name Procedures Remarks Pulse modulating 1. Detachment 1) Perform work of item 1 of 1, and 2, 3, 5. valve coil 2) Turn the coil clockwise (counterclockwise) by 90 degrees, and remove coil from the pulse modulating valve.
- Page 90 FILE NO. SVM-05027 Part name Procedures Remarks " Replacement of 1) Cut the sensor 100 mm longer than old one. Cutting here Thermal temperature 2) Cut the protective tube after pulling out it sensor part Connector sensor for (200 mm). servicing only 3) Move the protective tube toward the thermal sensor side and tear the tip of lead wire in two,...
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Page 91: Exploded Views And Parts List
FILE NO. SVM 05027 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 43T69399 PC BOARD (FOR 16NKV) 43T69320 TEMPERATURE SENSOR 43T69473 PC BOARD (FOR 13NKV) 43T62003... -
Page 92: Indoor Unit
INLET GRILLE ASSY 43T21327 MOTOR FAN 43T03316 BACK BODY ASSY (FOR RAS-16NKV-E, NKV-A) 43T80311 AIR-FILTER(R) 43T21338 MOTOR FAN 43T80310 AIR FILTER (L) (FOR RAS-13NKV-E, NKV-A) 43T09328 HORIZONTAL LOUVER 43T39303 BAND MOTOR-R 43T70002 DRAIN-HOSE 43T69421 WIRELESS-REMOCO 43T79301 CAP-DRAIN 43T85468 OWNER'S MANUAL 43T21321 MOTOR;... -
Page 93: Outdoor Unit (For 13Nav)
FILE NO. SVM-05027 12-3. Outdoor Unit (For 13NAV) Location Part Location Part Description Description 43T00427 FRONT CABINET ASSEMBLY 43T46326 BODY-PMV 43T00381 BACK CABINET ASSEMBLY 43T63305 COIL-PMV 43T03329 BASE 43T58303 REACTOR 43T00380 UPPER CABINET ASSEMBLY 43T54304 BIMETAL THERMO 43T09318 GUARD FAN 43T63005 HOLDER;THERMOSTAT;BIMETAL 43T52310... -
Page 94: Outdoor Unit (For 16Nav)
FILE NO. SVM-05027 12-4. Outdoor Unit (For 16NAV) Location Part Location Part Description Description 43T00427 FRONT CABINET ASSEMBLY 43T46326 BODY-PMV 43T00381 BACK CABINET ASSEMBLY 43T63305 COIL-PMV 43T03329 BASE 43T58303 REACTOR 43T00380 UPPER CABINET ASSEMBLY 43T54304 BIMETAL THERMO 43T09318 GUARD FAN 43T63005 HOLDER;THERMOSTAT;BIMETAL 43T52310... -
Page 95: Outdoor Unit (E-Parts Assy)
FILE NO. SVM-05027 12-5. Outdoor Unit (E-Parts Assy) TE Sensor (∅6) TS Sensor (∅6) TO Sensor (∅6) TD Sensor (∅4) Location Part Location Part Description Description 43T62320 HEATSINK (FOR 13NAV) 43T60326 FUSE 43T62321 HEATSINK (FOR 16NAV) 43T50305 TEMPERATURE SENSOR 43T69484 PC BOARD (FOR 13NAV) 43T50304 TEMPERATURE SENSOR... - Page 96 FILE NO. SVM-03008 TOSHIBA CARRIER CORPORATION – 87 –...