Panasonic CS-VZ9SKE Service Manual
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Panasonic CS-VZ9SKE Service Manual

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This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
R32 REFRIGERANT
– This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the
installation, maintenance and/or service of this product.
POWE R
T IME R
+8/1 0°C na noe /O DOR CLEANUP
COOL
DRY
HEAT
AUTO
TEMP
OFF
+8/10°C
INFO
HEAT
WARNING
CAUTION
Indoor Unit
CS-VZ9SKE
CS-VZ12SKE
Order No: RAC1511002CE
Outdoor Unit
CU-VZ9SKE
CU-VZ12SKE
Destination
Europe
© Panasonic Corporation 2015.

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Summary of Contents for Panasonic CS-VZ9SKE

  • Page 1 – This Air Conditioner contains and operates with refrigerant R32. THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL. Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance and/or service of this product. © Panasonic Corporation 2015.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE PAGE 14.7 Timer Control ..........70     Safety Precautions ..........3     14.8 Auto Restart Control ........71     14.9 Menu Function ..........72 Precaution For Using R32 Refrigerant ..... 6         14.10 Info Function ..........73  ...

  • Page 3: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...
  • Page 4 WARNING When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). Do not install outdoor unit near handrail of veranda.
  • Page 5 CAUTION Power supply connection to the room air conditioner. Use power supply cord 3 × 1.5 mm type designation 60245 IEC 57 or heavier cord. Connect the power supply cord of the air conditioner to the mains using one of the following method. Power supply point should be in easily accessible place for power disconnection in case of emergency.

  • Page 6: Precaution For Using R32 Refrigerant

    2. Precaution For Using R32 Refrigerant  The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models. However, pay careful attention to the following points: WARNING Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are special.
  • Page 7 CAUTION 2-5. No ignition sources  No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. He/She must not be smoking when carrying out such work.
  • Page 8 Leak detection methods  Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re- calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)  Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. ...
  • Page 9 CAUTION Labelling  Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.  The label shall be dated and signed.  Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant. Recovery ...

  • Page 10: Specification

    3. Specification Indoor CS-VZ9SKE Model Outdoor CU-VZ9SKE Performance Test Condition JIS, ErP Phase, Hz Single, 50 Power Supply Min. Mid. Max. Capacity 0.60 2.50 3.00 Running Current 2.05 — — Input Power Annual Consumption 215k — — — 5.81 —...
  • Page 11 Indoor CS-VZ9SKE Model Outdoor CU-VZ9SKE Type Cross-flow fan Material AS+GF Resin Motor Type DC, Transistor (8-poles) Input Power 40.4 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1010 Heat 1110 Cool 1070 Heat — Type Propeller Fan + Flat piece...
  • Page 12 Indoor CS-VZ9SKE Model Outdoor CU-VZ9SKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) I/D & O/D Height different m (ft) 5.0 (16.4)
  • Page 13 Indoor CS-VZ12SKE Model Outdoor CU-VZ12SKE Performance Test Condition JIS, ErP Phase, Hz Single, 50 Power Supply Min. Mid. Max. Capacity 0.60 3.50 4.00 Running Current — — Input Power Annual Consumption 400k — — — 4.38 — Pdsign 3.50 — —...
  • Page 14 Indoor CS-VZ12SKE Model Outdoor CU-VZ12SKE Type Cross-flow fan Material AS+GF Resin Motor Type DC, Transistor (8-poles) Input Power 44.1 Output Power Cool Heat Cool Heat Cool Speed Heat 1000 Cool 1040 Heat 1140 Cool 1100 Heat — Type Propeller Fan + Flat piece Material Motor Type DC Brushless (8-poles)
  • Page 15 Indoor CS-VZ12SKE Model Outdoor CU-VZ12SKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) I/D & O/D Height different m (ft) 5.0 (16.4) Additional Gas Amount...

  • Page 16: Features

    4. Features  Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control  Environment Protection Econavi  Long Installation Piping Long piping up to 15 meters during single split connection only  Easy to use remote control Press Individual operation mode button to ON Press OFF button to OFF ...

  • Page 17: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit (Green) (Orange) (Green) (Blue) (Green) Air Purification Filter <How to open the front panel> (inside the air filter) Pull the open/close part, then open Front panel with hands. Indicator Auto OFF/ON button •...

  • Page 18: Remote Control

    Remote Control Transmitter Remote control display HEAT COOL HEAT COOL HEAT COOL Auto Comfort Operation mode Econavi operation operation AUTO AUTO ECONAVI COMFORT Airflow direction OFF/ON Fan speed selection selection AIR SWING AIR SWING FAN SPEED nanoe operation Quiet operation TEMP nanoe POWERFUL...

  • Page 19: Dimensions

    6. Dimensions Indoor Unit and Remote Control <Top View> <Side View> <Side View> Air intake <Front View> “HEATCHARGE” direction 1900 Air outlet direction Left piping <Bottom View> hole Right piping hole Remote Control COOL HEAT AUTO TEMP +8/10°C INFO HEAT 26.5 605.5 <Rear View>...

  • Page 20: Outdoor Unit

    Outdoor Unit <Top View> 2-Ø13 Ø40 (124) (49) 2-Ø13 <Front View> <Side View> Ø435 <Side View> Ø507 Ø6.35 2-way valve at Liquid side (High Pressure) Ø9.52 3-way valve at Gas side (Low Pressure) 12.5 12.5 Unit: mm (355)

  • Page 21: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram INDOOR OUTDOOR LIQUID EXPANSION SIDE VALVE STRAINER ALUMINIUM ELECTRIC MUFFLER 2-WAY PIPE HEATER TEMP VALVE SENSOR 1 ALUMINIUM ELECTRIC PIPE HEATER SENSOR TEMP. SENSOR INTAKE OUTDOOR TEMP. TEMP. PIPE SENSOR SENSOR TEMP 3-WAY VALVE SENSOR 2 SENSOR 3-WAY VALVE...

  • Page 22: Refrigerant Flow

    Refrigerant Flow 7.1.1 Heating: 4-WAY VALVE (Reversing Valve) Activate  Normal heating operation INDOOR OUTDOOR LIQUID EXPANSION SIDE VALVE STRAINER ALUMINIUM ELECTRIC MUFFLER 2-WAY PIPE HEATER TEMP VALVE SENSOR 1 ALUMINIUM ELECTRIC PIPE HEATER SENSOR TEMP. SENSOR INTAKE OUTDOOR TEMP. TEMP.

  • Page 23: Deice Operation Flow

    Deice Operation Flow 7.2.1 Non Stop (Heating) Deice  Aluminium Electric Heater Activate INDOOR OUTDOOR LIQUID EXPANSION SIDE VALVE STRAINER ALUMINIUM ELECTRIC MUFFLER 2-WAY PIPE HEATER TEMP VALVE SENSOR 1 ALUMINIUM ELECTRIC PIPE HEATER SENSOR TEMP. SENSOR INTAKE OUTDOOR TEMP. TEMP.
  • Page 24 7.2.2 De-icing by 4-Way Valve Activate  Cooling Cycle Operation INDOOR OUTDOOR LIQUID EXPANSION SIDE VALVE STRAINER ALUMINIUM ELECTRIC MUFFLER 2-WAY PIPE HEATER TEMP VALVE SENSOR 1 ALUMINIUM ELECTRIC PIPE HEATER SENSOR TEMP. SENSOR INTAKE OUTDOOR TEMP. TEMP. PIPE SENSOR SENSOR TEMP 3-WAY VALVE...

  • Page 25: Block Diagram

    8. Block Diagram...

  • Page 26: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit TERMINAL BOARD POWER SUPPLY CORD DATA TAB2 TAB1 RY-PWR COMMUNICATION CIRCUIT RECTIFICATION CIRCUIT NOISE FILTER CIRCUIT EVAPORATOR INDOOR AIR TEMP. SENSOR (THERMISTOR) t° INDOOR HEAT EXCHANGER TEMP. SENSOR (THERMISTOR) t° HIGH VOLTAGE POWER SUPPLY NANOE ION GENERATOR CONTROL BOARD...

  • Page 27: Outdoor Unit

    Outdoor Unit REMARKS TO INDOOR UNIT BLK : BLACK WHT : WHITE MOTOR RED : RED GRN : GREEN TERMINAL BLU : BLUE 1 (L) 2 (N) BOARD YEL : YELLOW GRY : GRAY CONTROL BOARD BRW : BROWN AC-N AC-L DATA FUSE1...

  • Page 28: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit...

  • Page 29: Outdoor Unit

    10.2 Outdoor Unit...

  • Page 30: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board CN-DISP CN-GEAR1 CN-GEAR2 TAB2 (WHITE) CN-TH2 CN-NANO CN-CNT CN-SW CN-PNL CN-TH1 CN-FM TAB1 (BROWN) 11.1.2 Indicator and Receiver Printed Circuit Board CN-SEN CN-DISP...
  • Page 31 11.1.3 Human Activity Sensor Printed Circuit Board CN-SENS1 11.1.4 nanoe Printed Circuit Board 11.1.5 Emergency Switch Printed Circuit Board CN-SW...

  • Page 32: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board POWER TRANSISTOR (IPM) RY-PWR2 CN-S CN-TH2 CN-STM2 CURRENT CN-TH4 TRANSFORMER (CT) CN-STM1 CN-TH1 CN-TANK CN-TH3 CN-MTR1 CN-HOT CN-MTR2 DATA...

  • Page 33: Installation Instruction

    12. Installation Instruction 12.1 Select The Best Location 12.1.1 Indoor Unit 12.1.3 Indoor/Outdoor Unit Installation  Diagram Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  There should not be any heat source or steam Length of power supply cord near the unit.

  • Page 34: Indoor Unit

    12.2 Indoor Unit 12.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent it from vibration. Wall Wall Wall More than 495 mm More than 495 mm More than Screw 2 Indoor unit 76 mm 49 mm 39 mm...

  • Page 35: Indoor Unit Installation

    12.2.3 Indoor Unit Installation Do not turn over the unit without it’s shock absorber during pull out the piping. It may cause intake grille damage. Use shock absorber during pull out the piping to protect the intake grille from damage. Piping Piping Intake grille...

  • Page 36: Connect The Cable To The Indoor Unit

    • In case of left piping how to insert the connection cable Exchange the drain hose and the cap and drain hose. Drain hose Rear view for left piping installation Gas side piping Liquid side piping Drain hose Cable Drain cap (For the right piping, follow the same procedure) When inserting a drain cap into the unit, do not use a lubricant (such as refrigerating oil.)
  • Page 37 Terminal Board Earth wire longer than others AC wires for safety reason Holder Tape Indoor & outdoor connection cable Escapement Indoor & outdoor connection cable Connection cable Outdoor unit Note:  Secure the connection cable onto the control board with the holder (clamper). ...

  • Page 38: Outdoor Unit

    12.3 Outdoor Unit 12.3.1 Install the Outdoor Unit  After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. 1. Install at least 3 cm above the ground. Do not install the unit on the floor. 2. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). Install the outdoor unit in a level position and do not block the holes.

  • Page 39: Evacuation Of The Equipment

    12.3.2.2 Connecting the piping to Outdoor Unit Decide piping length and then cut by using pipe cutter. Do not overtighten, overtightening may cause gas leakage. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto Piping size Torque the copper pipe.

  • Page 40: Connect The Cable To The Outdoor Unit

    12.3.4 Connect the cable to the Outdoor Unit 1. Remove the control board cover from the unit by loosening the screw. 2. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 flexible cord, type designation 245 IEC 57 or heavier cord. 3.

  • Page 41: Installation And Servicing Air Conditioner Using R32

    13. Installation and Servicing Air Conditioner using R32 13.1 About R32 Refrigerant For air conditioning refrigerants such as R410A, the refrigerants were collected back in order to prevent their air dissipation, to curbe the global warming impact, in case they were released into the atmosphere. In the “4th Environmental Basic Plan”, 80% reduction of greenhouse gas emissions by 2050 is required, and due to this requirement, further reduction in the emission of high greenhouse effect gas, such as CFCs, is required.
  • Page 42 2. Characteristic of Pressure As shown in Table 2, R32 does not have much difference in vapor pressure at the same refrigerant temperature comparing to R410A, but comparing to R22, it is higher at 1.6 times more. Thus, the same as in case of R410A, it is necessary to do installation and service using high-pressure tools and components.

  • Page 43: Refrigerant Piping Installation • Tools Used In Services

    13.3 Refrigerant piping installation Tools used in services • 13.3.1 Required Tools R32 refrigerant air conditioners use the common parts as R410A air conditioners for two-way valves and three-way valves (diameters of service ports); thus, they maintain commonality in the maintenance of the compressive strength, the size of pipe flaring, and the size of flare nuts as R410A.
  • Page 44 3. Torque wrenches (diameters 1/2, 5/8) Manifold gauges / Charging hoses In order to strengthen the compressive strength, the diameters of wrenches change depending on the flare nut sizes. Torque wrenches Differences in charging hoses Differences in torque wrenches (common R410A) Normal 5.1 MPa 3.4 MPa...
  • Page 45 7. HFC refrigerant_Electric gas leakage tester 9. Refrigerant cylinders R32 refrigerant is often used for other mixed Refrigerant cylinders for R410A are painted in pink, refrigerant (R410A, R404A, R407C etc.). Therefore, and the ones for R32 are painted in other colors that the usage of existing HFC detectors is possible, but in might subject to change according to the international order to detect more accurately, we recommend to...
  • Page 46 11. Tools used for refrigerant piping installations and services Tools for R410A Common with R32 Possibility of usage for R22 ○ ○ Pipe cutters, reamers or scrapers ○ ○ Flare tools (clutch type) ○ ○ Torque wrench (1/4, 3/8) ○ ×...

  • Page 47: New Installation, Relocation, Repairing Of Refrigerant Cycle System The Procedures

    13.4 New installation, Relocation, Repairing of Refrigerant Cycle System The Procedures Relocation Repairing refrigerant cycle Installation Indoor / outdoor units and piping Pump down Refrigerant recovery • Displacing pipes and wires, and displacing indoor / outdoor units Prevention of impurity •...

  • Page 48: Piping Installation Of R32

    13.5 Piping installation of R32 13.5.1 Pipe materials used and flaring Copper pipes are used for refrigerant piping. Pipes Pipe thickness which comply with JIS Regulations need to be used. Room air conditioners which use R410A and R32 O and OL materials Thickness (mm) have higher pressure;...

  • Page 49: Installation, Relocation, And Service

    13.6 Installation, Relocation, and Service 13.6.1 Air purge and gas leak test for new installation (using new refrigerant pipes) using vacuum pump (From the point of view of global environment protection, do not release CFCs into the atmosphere during installation work) 1.
  • Page 50 13.6.2 Process of refrigerant recovery 1. Connect the center charging hose of manifold gauge to the in-let side of recovery device. 2. Connect the valves of the discharge side of recovery device and liquid side of refrigerant cylinder with red hose (charging hose).
  • Page 51 13.6.3 Relocation 1. Removing the air conditioning unit a) Recovery of outdoor unit refrigerant by pumping down Press “forced cooling button” (as a general rule, since 1998 the name of cooling testing button is changed, and this name is unified within the air conditioning industry), and then you are able to start cooling operation in which the room temperature is low, and you can recover the refrigerant from the outdoor unit.
  • Page 52 13.6.6 Re-insertion of refrigerant in service When re-insertion is needed, follow the procedures to ensure the insertion of new refrigerant at correct amount. 1. Attach charging hose (blue) to the service port of the outdoor unit. 2. Attach charging hose (red) to the vacuum pump. Fully open the 2-way and 3-way valves. 3.

  • Page 53: Repairing Of Refrigerant Cycle / Brazing Point

    13.7 Repairing of refrigerant cycle / Brazing point 13.7.1 Preparation for repairing of refrigerant cycle / brazing Brazing which is a technique needed for repairing refrigerant cycle requires advanced technique and experience, and this brazing procedure can only be performed by the workers who completed “Gas Welding Skill Training” regulated by the Occupational Safety and Health Act, and went through the training programs of refrigerant operations.
  • Page 54 2. Cylinder without adjustment valve side gauge pressure is adjusted by the adjuster. Check the both side valves of the torch and open the cylinder valve to check the remaining refrigerant in the cylinder. Caution: Do not attach oil component on the connection port of the adjuster. Especially, use an oxygen cylinder adjuster which is no oil substance type.
  • Page 55 13.7.5 Types of flame Types of flame change based on the proportion of propane and oxygen. [Neutral Flame] Perform brazing with this flame (This is a flame when oxygen and propane are mixed at proper proportion, and has lesser effect on the brazed metals) White core flame 10 ~ 15 mm...
  • Page 56 13.7.7 Selection of brazing material Use BAg brazing material (silver solder) to increase the welding performance. Tensile strength Composition of ingredients (%) Temperature (°C) Characteristics (Reference) Category Standard Brazing Base Number applications Solidus Liquidus Kgf•cm temp material Liquidity is good at low temperature, 49.0 14.5...
  • Page 57 13.7.10 Checking of brazing (insert) points 1. No impurity on the brazing point Gap 0.025 ~ 0.05 mm If dirt or oil is attached on the brazing point, the brazing filler metal does not reach to junction, and Inner diameter ø6.45 it may cause poor welding.
  • Page 58 (Reference) Melting temperature of copper • • • • • • • Approx. 1083°C Maximum temperature obtained in propane and oxygen • • • • • • • Approx. 1083°C The important point is to heat the bonding part uniformly within a short period of time until reaching to the brazing temperature in the following manner.

  • Page 59: Reference> Analysis Method For No Error Code, No Cooling / No Warming

    13.8 <Reference> Analysis method for no error code, no cooling / no warming 13.8.1 Preparation for appropriate diagnosis In order to obtain appropriate operation characteristics, minimum 15 minutes or more operation time [testing operation (rated operation)] is required. 1. Method of rated operation (rated operation) For the models which have two buttons of “emergency operation and forced cooling operation”, press forced cooling button once.
  • Page 60 1. Measuring temperature 1) Indoor unit suction temperature, release temperature, temperature difference, → Measure by thermometer 2) 2-way valve pipe temperature in cooling mode is low temperature (benchmark：5 ~ 10°C), in heating mode is medium temperature (benchmark：25 ~ 35°C). 3) 3-way valve pipe temperature in cooling mode is low temperature (benchmark：7 ~ 15°C) in heating mode is high temperature (benchmark：38 ~ 50°C).

  • Page 61: Operation Control

    14. Operation Control 14.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.

  • Page 62: Emergency Operation

     During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below chart. Overview of Mode Determination (Intake air 36°C) Heating Mode Intake air...

  • Page 63: Indoor Fan Motor Operation

    14.2 Indoor Fan Motor Operation A. Basic Rotation Speed (rpm) i. Manual Fan Speed [Cooling, Dry]  Fan motor’s number of rotation is determined according to remote control setting. Remote control [Heating]  Fan motor’s number of rotation is determined according to remote control setting. Remote control ii.
  • Page 64 14.2.1 CS-VZ9SKE SSLo Quiet Fan speed: Manual 1010 1070 Outside air 35°C & Unstable   Normal Other from the above   Initial airflow Area  Airflow stable/ Area Area  Unstable Normal Cool Dry    (Range ...

  • Page 65: Outdoor Fan Motor Operation

    14.2.2 CS-VZ12SKE SSLo Quiet Fan speed: Manual 1040 1100 Outside air 35°C & Unstable  Normal Other from the above   Initial airflow Area  Airflow stable/ Area Area  Unstable Normal Cool Dry    (Range  (Range Initial airflow Area ...

  • Page 66: Airflow Direction

    14.4 Airflow Direction  There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).  Control of airflow direction can be automatic (angles of direction is determined by operation mode, and heat exchanger temperature) and manual (angles of direction can be adjusted using remote control).
  • Page 67 Determination of automatic area with heating air flow direction Operation state Wind direction area Heating Automatic demo mode B area Four-way valve de-icing A area In abnormality of indoor piping temperature sensor B area Exceed more than 20s after stopping compressor A area Exceed 180 second after completing weak operation or suction temperature area is the A area...
  • Page 68 14.4.2 Horizontal Airflow Automatic horizontal airflow direction can be set using remote control, the vane swings left and right within the angles as stated below. During Manual Setting During Auto Setting Condition Middle Setting (default) Right Setting Left Setting C area 0°/0°...

  • Page 69: Quiet Operation

    14.5 Quiet Operation  Purpose To provide quiet operation compare to normal operation. Quiet operation can be operate with Auto, Cooling, Heating, Dry and nanoe.  Control condition Quiet operation start condition QUIET  When “QUIET” button at remote control is pressed. ...

  • Page 70: Timer Control

    14.7 Timer Control  There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.  If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence. 14.7.1 ON Timer Control ...

  • Page 71: Auto Restart Control

     Remaining time appear on the remote control displays for the remaining time every hour. When the time is up the remaining time display will disappear.  If change the remote control setting temperature during the sleep operation, you can correct the set temperature during the next sleep operation (up to ±...

  • Page 72: Menu Function

    14.9 Menu Function To change setting according to living environment.  8 options are available in Menu button. Display Items Purpose Button Center To set Indoor unit installation position (CENTER → LEFT → RIGHT Auto-off To set Auto Off operation. (Human activity sensor) MENU Brighter LED Change the brightness of the remote controller.

  • Page 73: Info Function

    14.10 Info Function  Purpose To check the energy charging level. To check the diagnosis code for malfunction.  To check the energy charging level. Air conditioner must be operate in heating mode. INFO Press Info button on the remote controller to check energy charging level. Display will be indicate of the storage of heat that can be used in the non-stop defrost operation.

  • Page 74: Nanoe Operation

    14.12 nanoe Operation  This operation provides moisturizing effect on the skin or hair due to the generation of (fine particle ions wrapped in water), to provide a deodorant and sterilization effect.  It is depends on the season, ambient environment (temperature and humidity), hours of use, human. This preserves user's skin's moisture, coherency feeling of hair.

  • Page 75: Odor Cleanup

    14.13 ODOR CLEANUP  Purpose This operation is to release odor from indoor unit.  Control condition (During Stand by mode) Press ODOR CLEANUP button for 3 seconds or more. The operation activates for 20 minutes and resume to the presetting operation automatically. The unit will be stop after 20 minutes of ODOR CLEANUP function.

  • Page 76: 8/10°C Operation

    14.14 +8/10°C Operation  +8/10°C operation provides heating at low setting temperature in unoccupied houses during winter for the purpose of protecting equipments or housing appliances which may be destroyed by the extreme cold weather.  This operation can be ON by pressing the +8/10°C button on the remote control. ...

  • Page 77: Pre Heating Operation

    14.15 Pre Heating Operation  Pre Heating operation learn and memorised everyday switch “ON” time of heating and pre heating to blow heat wind as soon pressed the heating button.  Before setting, please make sure that the current time is correct. ...

  • Page 78: Auto Comfort And Econavi Operation

    14.16 AUTO COMFORT and ECONAVI Operation  Area of human availability, activity level and absent is judged based on pulses by using infrared sensor. The internal setting temperature shift, fan speed, horizontal and vertical airflow direction are adjusted in order to provide comfort environment while maintain the energy saving level.
  • Page 79 14.16.1.1 Signal Detection Sensor: 2 unit Area short 2 short 1  Short distance  short 2 short 1 short 2 short 1 Estimated flow of human position ----- The infrared sensor pulse output is detect every 3 seconds, Infrared sensor output signal and it is decide the pulse is available or not in 3 seconds.
  • Page 80 14.16.1.2 Information Log  The signal from Infrared sensor will be log to human activity database for further analysis. 14.16.1.3 Human Position Analysis  According to Area of Living, frequency of activity, the system will analyze the human position away from the indoor unit.

  • Page 81: Air Direction Control

    14.16.3 Air Direction Control Fan motor, horizontal vane, vertical vane are to control and adjust the discharge air amount and direction. 14.16.3.1 Image of Air Flow Control When sensor is set: Sensor directs the air to humans To avoid direct air flow Direct air flow Reaching close to When reached...
  • Page 82 When sensor is not set: When “Powerful” or “More” is set, is cools Auto mode air conditions whole room (heats) the entire room quickly When hot When cooling Air discharge controlled Cooling Air flow controlled wind strong Horizontal vane : swings Vertical vane : swings Vertical vane : swings When cool...
  • Page 83 Descriptions of the mode Every time the signal for infrared sensor check is received, the fixed detection is performed at a different human activity sensor angle. The result is displayed on LED every 3 seconds. Operation mode OFF (Cleaning is also stopped) Panel Ordinary operating position (It opens even if the mode signal received is “OFF”) Every time the signal for infrared sensor check is received, the position is shifted in the sequence of...
  • Page 84 14.16.4.2 Judge Sunlight Intensity  Based on sunlight sensor output voltage, the sunlight intensity value will be computed and logged to sunlight intensity database.  The sunlight sensor sensitivity could be adjusted: SUNLIGHT INTENSITY SENSOR SUNLIGHT INTENSITY SENSOR SUNLIGHT INTENSITY SENSOR 14.16.4.3 Judge Ambient Condition ...
  • Page 85 14.16.4.5 Sunlight Sensor Check Mode  Operation details (to check, press ECONAVI button for 10 sec). The sunlight sensor check mode will be operated for 5 minutes. During check mode, the ON and OFF timer will be memorized but it operation be ignored. During check mode, if the sunlight sensor check code is retransmitted, the 5 minutes counter will be reset.

  • Page 86: Protection Control

    15. Protection Control 15.1 Protection Control for All Operations 15.1.1 Restart Control (Time Delay Safety Control)  The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. ...
  • Page 87 15.1.3 IPM (Power Transistor) Prevention Control  Overheating Prevention Control When the IPM temperature rises to 120°C, compressor operation will stop immediately. Compressor operation restarts after 3 minutes the temperature decreases to 110°C. If this condition repeats continuously 4 times within 30 minutes, timer LED will be blinking (“F96” is indicated). ...

  • Page 88: Protection Control For Cooling And Dry Operation

    15.1.8 4-Way Valve Operation Detection Control (Switching Abnormality between Cooling and Heating)  When indoor heat exchanger exceeds 45°C (Cooling operation) or 0°C (Heating and Deice operation) in 4 minutes or 3 minutes (Deice operation) after compressor start, compressor will stopped. ...

  • Page 89: Protection Control For Heating Operation

    15.2.5 Dew Prevention Control 1  To prevent dew formation at indoor unit discharge area.  This control will be activated if: Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. When Cooling or Dry mode is operated more than 20 minutes or more. ...
  • Page 90 15.3.4 Cold Draught Prevention Control  When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced. 15.3.5 Deice Operation  When outdoor pipe temperature and outdoor air temperature is low, deice operation starts. ...
  • Page 91  Non-stop heating deice operation is prohibited when any of the following condition is met Protection control that limit capacity. Aluminium electric heater (HEATCHARGE) temperature sensor abnormal. Aluminium electric heater (HEATCHARGE) cycle abnormal. Outdoor pipe temperature sensor 2 abnormal. The outdoor temperature range falls under -30°C. ...
  • Page 92 Control Control 1.5°C 38Hz Lower level 1.0°C 35Hz Upper level Non Control Non Control Intake Temperature - Setting Temperature Compressor Hz Control content  Aluminium electric heater 3-way valve is ON in 90 sec.  Aluminium electric heater 3-way valve ON is completed, at the time that initial conditions are not arranged. 15.3.8 Aluminium Electric Heater (HEATCHARGE) Protection Control Heat charge will absorb the heat from compressor body and store the heat inside the storage unit.
  • Page 93 15.3.8.1 Protection of Aluminium Electric Heater (HEATCHARGE). OFF by Sensor Aluminium electric heater OFF in 85°C (normal condition) Temperature rise stopped at 100°C. Thermal storage sensor Thermal storage sensor (CC) Thermal storage tank surface max (CC) OFF by Temperature Fuse Fuse cut at 129°C Temperature rise stopped at 206°C.

  • Page 94: Servicing Mode

    16. Servicing Mode 16.1 Auto OFF/ON Button (Indoor Unit) Auto OFF/ON button pressed Auto OFF/ON button pressed Auto OFF/ON button pressed Auto OFF/ON button pressed 5 sec 5 sec 5 sec 5 sec Test Run Operation Test Run Operation Remote Control Operation Time Auto Operation (Forced Cooling...
  • Page 95 OPERATION MODE The total of cumulative operation time of heating, cooling, defrosting, automatic, blower operation that is being recorded in EEPROM will be notified by number of times of timer LED flash and notification sound. Notification sound Number of times of LED flash Cumulative operation time and notification sound No failure memory...

  • Page 96: Remote Control Button

     Individual Mode "Beep" Emergency SW Non-existence of notification sound Existence of notification sound Notification sound ON/OFF Set mode "Beep" Diagnosis code received "Beep" "Beep" Existence of abnormality detection Emergency SW Non-existence of notification sound Indoor intake sensor abnormality (H14) Notification selection mode "Beep"...

  • Page 97: Troubleshooting Guide

    17. Troubleshooting Guide 17.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
  • Page 98 17.1.1 Relationship between the Condition of the Air Conditioner and Pressure and Electric Current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant ...

  • Page 99: Breakdown Self Diagnosis Function

    17.2 Breakdown Self Diagnosis Function 17.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  Once abnormality has occurred during operation, the unit will stop its operation and Timer LED blinks. In case of abnormality which does not affect the refrigeration cycle, the operation will not stop but the Timer LED will blinks. ...
  • Page 100 17.2.6 Failure Diagnosis Function Failure diagnosis operation Condition Remote control operation Diagnosis sound Diagnosis display Notification Bleep The 1st time Bleep The latest failure diagnosis code in history Normal The 2nd time Bleep bleep The last time failure diagnosis code in history Diagnosis Code The time prior to last one failure diagnosis The 3rd time...

  • Page 101: Self Diagnosis Functions And Points Of Diagnosis

    17.3 Self Diagnosis Functions and Points of Diagnosis [List of Diagnosis Method] Main Areas to be Code Name of Diagnosis Descriptions on Diagnosis Diagnosed Codes for the commencement of — — — self diagnosis No memory of error — — code Indoor/outdoor When the indoor/outdoor communication failed for 15 seconds or more, the power relay...
  • Page 102 Outdoor unit heat This error code is displayed when the outdoor unit heat exchanger temperature sensor  Outdoor unit heat exchanger 1 is below -58°C or 107°C or higher for 5 consecutive seconds. exchanger temperature sensor 1 <Points of diagnosis> temperature error 1.
  • Page 103  2- and 3-way valve 2- and 3-way valve Failure to open the 2- and 3-way valve is detected based on the changes in indoor unit opening failure check intake air temperature and indoor unit pipe temperature. The time required for this opening failure detection is approximately 10 minutes when in COOL mode and approximately 25 minutes when in HEAT mode.
  • Page 104 Prevention of over- When the Aluminium Electric Heater (Heatcharge) is switched ON, if the sensor detects  Over-increase of increase of Aluminium more than 85 °C of heat, the power supply to the Aluminium Electric Heater Aluminium Electric Heater (Heatcharge) is switched OFF. Furthermore, when more than 100 °C is detected, the Electric Heater (Heatcharge) error code is shown.
  • Page 105  Interrupted heat Transistor module Overheat is detected in the IPM to block the heat. The diagnosis code is stored in the over-temperature memory and the compressor stops. The error code is displayed if this error is detected radiation protection four times within 30 minutes.

  • Page 106: Self-Diagnosis Method

    17.4 Self-diagnosis Method 17.4.1 H11 (Indoor/Outdoor Communication Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Disconnection/Imperfect Is there no loosened connection of the wire connected to the terminal? connection of the wire Fix the problem. (H11 may be displayed due to imperfect wire connection.) No abnormality is observed When the air conditioner is operated after the power is OFF and then ON, is the following voltage present between the white and black terminals on the outdoor unit?
  • Page 107 17.4.2 H14 (Indoor Unit Intake Air Temperature Sensor Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken 46°C and above Check the ambient temperature of the indoor unit during operation. Improve the ambient temperature. Below 46°C Disconnection/Imperfect Check for bad connection of the connector of the indoor unit intake air connection of the connector Fix the problem.
  • Page 108 17.4.3 H15 (Compressor Temperature Sensor Error) Sensor (Thermistor) Characteristics 1 Outdoor Temp. Sensor 2 Heat Exchanger Sensor 3 Compressor Tank Temp. Sensor Temperature (°C) 17.4.4 H16 (Outdoor Unit CT Disconnection Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Check the AC current flowing in the white wire on the outdoor unit 0.7A and above Replace the outdoor unit control board.
  • Page 109 17.4.5 H19 (Indoor Unit Fan Motor Lock Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken A foreign object is stuck on the fan Fix the problem. Check if a foreign object is stuck on the fan. No foreign object is stuck on the fan Disconnection/Imperfect connection of the connector Check for bad connection of the fan motor connector.
  • Page 110 17.4.7 H27 (Outdoor Temperature Sensor) 17.4.8 H28 (Outdoor Heat Exchanger Temperature Sensor 1 Error) 17.4.9 H29 (Outdoor Heat Exchanger Temperature Sensor 2 Error) Sensor (Thermistor) Characteristics 1 Outdoor Temp. Sensor 2 Heat Exchanger Sensor 3 Compressor Tank Temp. Sensor Temperature (°C)
  • Page 111 17.4.10 H33 (Connection Error of the Models with Different Voltage Power Supply) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken An abnormality is observed Are the indoor and outdoor units connected following the correct voltage Fix the problem. specifications? No abnormality is observed Replace the control boards of indoor and outdoor unit.
  • Page 112 17.4.11 H38 (Brand not Corresponding) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken An abnormality is observed Are the correct models of indoor and outdoor units connected? Fix the problem. No abnormality is observed Replace the control boards of indoor and outdoor unit.
  • Page 113 17.4.12 H53 (Aluminium Electric Heater (Heatcharge) Temperature Sensor Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Disconnection/Imperfect connection of the connector Check for bad connection of the sensor connector. Fix the problem. No abnormality is observed An abnormality is observed Check for the characteristics of the sensor.
  • Page 114 17.4.13 H54 (Aluminium Electric Heater (Heatcharge) PCB Abnormality) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Replace the PCB PCB abnormality...
  • Page 115 17.4.14 H59 (Infrared Sensor Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Disconnection/Imperfect connection of the connector Check for bad connection of the connector of the infrared sensor unit. Fix the problem. No abnormality is observed An abnormality is observed Is DC5V present between 1 –...
  • Page 116 17.4.15 H67 (nanoe Abnormality) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken No change in symptom Replace the PCB Replace nanoe system and high volatge device Symptom improved Troubleshooting complete...
  • Page 117 17.4.16 H70 (Sunlight Sensor Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken An abnormality is observed Replace the board on which the sunlight sensor is mounted, and then Replace the indoor unit control board. check for the error in the sunlight sensor check mode. No abnormality is observed Repair is completed.
  • Page 118 17.4.17 H80 (Aluminium Electric Heater (Heatcharge) 3-Way Valve Sensor Abnormality) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Not Connected Check sensor connection abnormality Re-connect the connector Normal Abnormal Check sensor characteristics Replace the sensor Check the resistance of the sensor Normal Replace the PCB ...
  • Page 119 17.4.18 H96 (2-Way and 3-Way Valve Opening Failure Check) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Closed Open the 2-way and 3-way valves. Check if the 2-way and 3-way valves are open. Open An abnormality is observed Check for the characteristics of the indoor unit heat exchanger temperature sensor. Replace the indoor unit heat ...
  • Page 120 17.4.19 H97 (Outdoor Unit Fan Motor Lock Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken For the type with two connectors (5-pin and 3-pin) A foreign object is stuck on the fan Check if a foreign object is stuck on the fan. Fix the problem.
  • Page 121 17.4.20 H98 (Indoor Unit Overpressure Protection) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken An abnormality is observed Clean the filter. Check for clogged filter on the indoor unit. No abnormality is observed Disconnection/Imperfect connection of the connector Check for bad connection of the connector of indoor unit heat Fix the problem.
  • Page 122 17.4.21 H99 (Indoor Unit Heat Exchanger Freezing Protection (Error Code is to be Stored in the Memory only)) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Filter is clogged Check for clogged filter on the indoor unit. Clean the filter. No abnormality is observed Rotation is slow Replace the indoor unit fan motor.
  • Page 123 17.4.22 F11 (Cooling-Heating Switching Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken F11 occurred during cooling operation: Perform cooling operation and check if the pipe temperature goes down. F11 occurred during heating operation: Perform heating operation and check if the pipe temperature goes up.
  • Page 124 17.4.23 F19 (Aluminium Electric Heater (Heatcharge) Wire Cut Abnormality) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Check heater connection Re-connect the connector Check Aluminium electric heater (Heatcharge) characteristics (normal ?) Replace the heater (check heater resistance at 33Ω ) Replace the PCB...
  • Page 125 17.4.24 F83 (Protection of Aluminium Electric Heater (Heatcharge) Temperature Over Heating) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Check heater characteristics Replace the heater (check heater resistance at 33Ω ) Replace the sensor Check sensor characteristics Re-connect the connector Check sensor conncetion Check outdoor temperature sensor characteristics Replace the outdoor sensor...
  • Page 126 17.4.25 F86 (Aluminium Electric Heater (Heatcharge) 3-Way Valve Cycle Abnormality) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Abnormal Check Aluminium electric heater (Heatcharge) 3-way valve characteristics Replace the 3-way valve Normal No Good Aluminium electric heater (Heatcharge) Replace the coil Check the 3-way valve coil 3-way valve cycle defect evaluation Replace the outdoor PCB...
  • Page 127 17.4.26 F90 (PFC Protection) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken PFC protection is activated PFC protection is activated as a occasionally protection against supply voltage drop Is PFC protection activated occasionally, or is F90 stored in the memory only? or instantaneous power interruption.
  • Page 128 17.4.27 F91 (Refrigeration Cycle Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Open the 2- and 3-way valves. Check if the 2- and 3-way valves are open. Check for the characteristics of the indoor unit heat exchanger temperature sensor. Abnormal Replace the indoor unit heat Refer to the characteristic table for electronic circuit diagram.
  • Page 129 17.4.28 F93 (Compressor Rotation Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Coil is broken Replace the expansion valve coil and Check for broken expansion valve coil. compressor. Normal The compressor does not rotate at all After the air conditioner starts operation, does the compressor rotate for a Replace the outdoor unit control board.
  • Page 130 17.4.29 F95 (Overpressure Protection in Case of Cooling Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken An abnormality is observed Check for clogging and interrupted heat radiation on the outdoor unit heat Fix the problem. exchanger. Disconnection/ No abnormality is observed Imperfect connection of the connector...
  • Page 131 17.4.30 F96 (Transistor Module Over-temperature Protection) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Ventilation is interrupted Fix the problem. Check if the ventilation of the outdoor unit is interrupted by dust, etc. No abnormality is observed Heat radiation is interrupted Fix the interrupted heat radiation Check if the heat radiation by the heat sink of the outdoor unit control board...
  • Page 132 17.4.31 F97 (Compressor Over-temperature Protection) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Disconnection/ Imperfect connection of the connector Fix the problem. Check for bad connection of the compressor temperature sensor connector. No abnormality is observed An abnormality is observed Check for the characteristics of the compressor temperature sensor.
  • Page 133 17.4.32 F98 (Total Current Protection Control) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken Voltage drops Voltage drops for the protection against Check if AC voltage drops during operation. supply voltage drop or instantaneous power interruption. No abnormality is observed An abnormality is observed Check for clogging and interrupted heat radiation on the outdoor unit Fix the problem.
  • Page 134 17.4.33 F99 (DC Peak Operation Error) Troubleshooting Diagnosis Procedures and Cause Measures to be Taken After the air conditioner starts operation, does the compressor The compressor rotates rotate for a while before it stops? for a while An abnormality The compressor is observed does not rotate Is the fan rotating normally?

  • Page 135: Disassembly And Assembly Instructions

    18. Disassembly and Assembly Instructions 18.1 Points of Disassembly (Indoor Unit) Be sure to disconnect the power plug from the outlet before disassembly or repair of the unit. Failure to observe this warning could result in electric shock. Be very careful not to touch the live parts when performing a repair work which requires power supply or Disconnect the power plug inspecting the circuit.
  • Page 136 18.1.2 Removing the Air Filters Raise the front panel up with both hands until it stops. * Note on disassembly: Hold the grooves on the front panel to open it. (The panel moves if you hold the movable part). Pull down the receiver and indicator panel. Put your fingers at the slits on both sides of the air filter and pull the filter towards you to remove it.
  • Page 137 18.1.3 Removing the Front Grille (Right) and Front Grille (Left) Perform “18.1.1 Removing the Front Panel”. Pull down the receiver and indicator panel. Receiver and indicator panel Front grille (left) Front grille (right) Open the vertical airflow direction louver slowly. Vertical airflow direction louver...
  • Page 138 Remove the screw of the front grille (right) and (left) (2 screws each). Disengage the tab on the top part of the front grille (right) and (left) (one tab each). Slightly lift the top part and then raise the front grilles to remove them. Front grille (left) Front grille (left) Screw...
  • Page 139 18.1.4 Removing the Control Board (Electronic Controller) Perform “18.1.1 Removing the Front Panel”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. * Note on disassembly: When removing only the control board box, remove the front grille (right) only. Remove the screw (2 pieces) at the control board cover.
  • Page 140  Tab terminals TAB1 (brown)……….Power supply. TAB2 (white)……….Power supply (Thermal fuse). CN-TH2 CN-DISP CN-GEAR1 CN-GEAR2 Tab2 CN-NANO Tab1 CN-CNT CN-FM CN-PNL CN-TH1 CN-SW Remove terminal block cover and disconnect terminal lead wire (brown and black) and remove earth wire screw (1 piece). Remove the screw at the control board and disengage the tab (2 locations) on both sides of the control baord.
  • Page 141 18.1.5 Removing the Control Board (Auto OFF/ON Button) Perform “18.1.1 Removing the Front Panel”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. * Note on disassembly: When removing only the control board (Auto OFF/ON button), remove the front grille (left) only.
  • Page 142 18.1.6 Removing the Indicator, Receiver & Human Sensor Control Board Perform “18.1.1 Removing the Front Panel”. Pull down the receiver and indicator panel. Remove the screw (2 pieces) and disengage the tab (2 locations) on both sides of the control board and 1 tab on the center of control board.
  • Page 143  How to remove control board (indicator and signal receptor) Disconnect connector CN-DISP (white)….Control board…...and CN-SENS (white)…….Human sensor. Disengage the tabs (1 location on the plastic indicator cover). CN-SENS CN-DISP Flip the plastic indicator cover and disengage the tabs. (4 locations).
  • Page 144 18.1.7 Removing the Vertical Airflow Direction Louver  How to remove the lower louver of the vertical airflow direction louver. Open the lower louver The back side of the lower louver is designed as follows: left - inserting type center - hook engaging type right - inserting into the motor with push-pull lock Push the center hook to the left to disengage it.
  • Page 145 18.1.8 Removing the Indicator, Receiver & Human Sensor Control Board to below side Perform “18.1.1 Removing the Front Panel”. Perform “18.1.2 Removing the Air Filters”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. Disengage the tabs (2 locations) located at indicator, receiver and human sensor control board. Then, Pull down the indicator, receiver and human sensor control board.
  • Page 146 18.1.10 Removing the Electronic Controller Box and Bracket Perform “18.1.1 Removing the Front Panel”. Perform “18.1.2 Removing the Air Filters”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. Perform “18.1.4 Removing the Control Board (Electronic Controller)”. Remove the screws (1 piece) located at terminal block casing. Then, remove the electronic controller box and bracket.
  • Page 147 18.1.12 Removing the Drive Motor of the Vertical and Horizontal Direction Louver (Left side) Perform “18.1.1 Removing the Front Panel”. Perform “18.1.2 Removing the Air Filters”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. Perform “18.1.4 Removing the Control Board (Electronic Controller)”. Perform “18.1.8 Removing the Indicator, Receiver &...
  • Page 148 18.1.14 Removing the Drive Motor of the Vertical and Horizontal Direction Louver (right side) Perform “18.1.1 Removing the Front Panel”. Perform “18.1.2 Removing the Air Filters”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. Perform “18.1.4 Removing the Control Board (Electronic Controller)”. Perform “18.1.8 Removing the Indicator, Receiver &...
  • Page 149 18.1.15 Removing the Discharge Grille Perform “18.1.1 Removing the Front Panel”. Perform “18.1.2 Removing the Air Filters”. Perform “18.1.3 Removing the Front Grille (Right) and Front Grille (Left)”. Perform “18.1.4 Removing the Control Board (Electronic Controller)”. Perform “18.1.8 Removing the Indicator, Receiver & Human Sensor Control Board to below side”. Perform “18.1.9 Removing the Indicator, Receiver &...
  • Page 150 14 Loosen the fixing screw (1 screw) which fixes the cross flow fan to the indoor motor. Screw Cross flow fan 15 Pull out the cross flow fan while lifting up the left side of the heat exchanger. Heat exchanger Cross flow fan 16 Remove the screw (3 pieces) of the motor cover and pull out the motor together with the cover to the right side to remove it.

  • Page 151: Vertical Airflow Direction Louver

    18.2 Vertical Airflow Direction Louver *Please replace the vertical airflow direction louver (for the upper side) in accordance with the following steps. 18.2.1 Steps to remove the vertical airflow direction louver (for the upper side) 1. Check that the product is plugged in. 2.
  • Page 152 18.2.2 Steps to install the vertical airflow direction louver (for the upper side) 1. First, align the tip of the main unit central axis to the hole of the vane central fixed part. central axis 2. Slide the vane left axis to the left while aligning it with the left axis of the stepping motor and then insert the main unit central axis and vane left axis simultaneously.
  • Page 153 18.2.3 Steps to remove the vertical airflow direction louver (for the lower side) 1. Check that the product is plugged in. 2. Hold down the Eco Navi button on the remote control for 5 seconds and wait until the vertical airflow direction louver opens and stops automatically.
  • Page 154 18.2.4 Steps to install the vertical airflow direction louver (for the lower side) 1. First, align the tip of the main unit central axis to the hole of the vane central fixed part. central axis 2. Slide the vane left axis to the left while aligning it with the left axis of the stepping motor and then insert the main unit central axis and vane left axis simultaneously.

  • Page 155: Points Of Disassembly (Outdoor Unit)

    18.3 Points of Disassembly (Outdoor Unit) The electrical components of the outdoor unit are under high voltage by the operation of the booster capacitor. Fully discharge the capacitor before commencing a repair work. Failure to observe this warning could result in electric shock. CAUTION: HIGH VOLTAGE 18.3.1 Removing the Outer Top Panel and Outer Front Panel Remove the screws of the outer top panel.
  • Page 156 Disengage the tabs on the outer front panel (3 locations on the left side and 1 location on the right side). Remove the outer front panel while pulling it slightly up. 18.3.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate Cover) Remove the screw (1 piece) of the electrical component cover (2 &...
  • Page 157 18.3.3 Removing the Power-Supply Box Perform “17.2.1 Removing the Outer Top Panel and Outer Front Panel”. Perform “17.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate Cover)”. Disengage 4 tabs of the electrical component cover (the top cover of the control board) (2 locations each on the right and left sides).
  • Page 158 Disconnect the connector of the indoor/outdoor connection wires (Brown, Blue and Black) and remove the fixing screw of the earth wire (green). Remove the screw (2 piece) which fixes the power-supply box to the outer side panel (right). Fixing screw of Earth wire outer side panel (right) Fixing screw...
  • Page 159 18.3.5 Removing the Propeller Fan and Outdoor Motor Perform “17.2.1 Removing the Outer Top Panel and Outer Front Panel”. Disengage 4 tabs of the electrical component cover (the top cover of the control board) (2 locations each on the right and left sides). Remove the electrical component cover (the top cover of the control board). Remove the fixing screw (1 piece) of the power-supply box.
  • Page 160 Loosen the fixing screws (4 pieces) of the outdoor motor and remove the outdoor motor. Screw 4 locations at every corner Outdoor motor  Notes on assembly: When assembling the propeller fan and outdoor motor, the alignment mark located in the center part of the propeller fan should be aligned with the slit in the shaft of the outdoor motor.
  • Page 161 Pull the outer side panel (right) towards you while pulling up the fixing tab (1 location) of the power-supply box to disengage the tab. Remove the fixing screws (5 pieces) of the outer side panel (right) and remove the outer side panel (right). ...
  • Page 162 18.3.7 Removing the Compressor and Aluminium Electric Heater (Heatcharge) Perform “17.2.1 Removing the Outer Top Panel and Outer Front Panel”. Perform “17.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate Cover)”. Perform “17.2.3 Removing the Power Supply Box”. Perform “17.2.6 Removing the Outer Side Panel (Right)”.
  • Page 163 10 Remove the acoustic insulation material and then remove the nuts which fix the compressor (3 locations). Note on disassembly: Use a box wrench to remove the compressor nut. 11 Remove the welded parts (4 locations). Aluminium electric heater inlet. Aluminium electric heater outlet.
  • Page 164 12 Remove the compressor and aluminium electric heater. Remove the fixing screw for clamping bracket of the aluminium electric heater (2 pieces). (The aluminium electric heater is attached to the compressor with clamp) Remove the clamping bracket and separate the compressor and aluminium electric heater. Note on disassembly: Remove the aluminium electric heater sensor when replacing the aluminium electric heater.
  • Page 165 18.3.8 Aluminium Electric Heater Replacement Procedure (Heatcharge) 18.3.8.1 Preparation Power-off the unit (remove plug and/or etc.). Collect all refrigerant into the cylinder by reclaming machine. As brazing work is involved, make sure the workshop and surrounding area is sufficient and safe. 18.3.8.2 Process 1 (Dismatling of the Parts) Remove control-board cover, top plate and front panel, pull out connecting wire, then remove side panel...
  • Page 166 18.3.8.3 Process 2 (Removing brazing point) Remove tape (poly-e foam) from piping prior to removing the brazing point. tape (poly-e foam) Caution Protection from the brazing flame should be considered during replacing the parts. Firstly disconnect the which pipe entering to aluminium electric heater, compressor suction and the compressor discharge pipes.
  • Page 167 18.3.8.5 Replacement of Aluminium Electric Heater (Heatcharge) Exchange with the new aluminium electric heater. Install aluminium electric heater by fixing clamping bracket to the original position. Fix back sensor for aluminium electric heater to the original location. Caution Carefully read the instructions before proceeding to the replacement of aluminium electric heater. 18.3.8.6 Fix-back compressor and Connect the Tubes Set compressor and aluminium electric heater to the original position.

  • Page 168: Technical Data

    Technical data provided are based on the air conditioner running under free frequency. 19.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 19.1.1 CS-VZ9SKE CU-VZ9SKE Indoor (°C) Outdoor DB (°C) 19.0 2.99...

  • Page 169: Heat Mode Performance Data

    19.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C Voltage: 230V 19.2.1 CS-VZ9SKE CU-VZ9SKE Indoor (°C) Outdoor DB (°C) 4.63 2.41 5.56 2.48 7.86 2.72 4.70 2.36 5.70 2.41 7.90 2.72 4.84 2.24 5.93...

  • Page 170: Service Data

    20.1 Cool Mode Outdoor Air Temperature Characteristic Condition  Room Temperature: 27/19°C, Cooling Characteristic  Fan: High  Piping Length: 5.0 m  Freq: Rated Fc 20.1.1 CS-VZ9SKE CU-VZ9SKE 2.500 2.210 1.920 1.630 1.340 1.050 Outdoor Air Temperature (°C) 1.250 181.00 1.230...
  • Page 171 20.1.2 CS-VZ12SKE CU-VZ12SKE 4.500 3.980 3.460 2.940 2.420 1.900 Outdoor Air Temperature (°C) 1.200 174.00 1.160 168.00 1.120 162.00 1.080 157.00 1.040 151.00 1.000 145.00 Outdoor Air Temperature (°C) 4.200 3.940 3.680 3.420 3.160 2.900 Outdoor Air Temperature (°C) 14.400 14.080 13.760 13.440...

  • Page 172: Heat Mode Outdoor Air Temperature Characteristic

    Condition  Room Temperature: 20°C, Heating Characteristic  Fan: High  Piping Length: 5.0 m  Freq: Rated Fh 20.2.1 CS-VZ9SKE CU-VZ9SKE 3.250 3.030 2.810 2.590 2.370 2.150 -30 -27 -24 -21 -18 -15 -12 -9 Outdoor Air Temperature (°C) 2.200...
  • Page 173 20.2.2 CS-VZ12SKE CU-VZ12SKE 4.000 3.720 3.440 3.160 2.880 2.600 -30 -27 -24 -21 -18 -15 -12 -9 Outdoor Air Temperature (°C) 2.300 334.00 2.140 210.00 1.980 287.00 264.00 1.820 241.00 1.660 1.500 218.00 -30 -27 -24 -21 -18 -15 -12 -9 15 18 Outdoor Air Temperature (°C) 4.500...

  • Page 174: Piping Length Correction Factor

    20.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 20.3.1 CS-VZ9SKE CU-VZ9SKE 20.3.1.1 Cooling Capacity 2.600 2.540 2.480 2.420 2.360 2.300 Piping Length (m) Piping length Capacity (kW) 2.55 2.50...
  • Page 175 20.3.2 CS-VZ12SKE CU-VZ12SKE 20.3.2.1 Cooling Capacity 3.600 3.520 3.440 3.360 3.280 3.200 Piping Length (m) Piping length Capacity (kW) 3.57 3.50 3.36 3.22 20.3.2.2 Heating Capacity 4.300 4.140 3.980 3.820 3.660 3.500 Piping Length (m) Piping length Capacity (kW) 4.22 4.20 3.65 3.57...

  • Page 176: Exploded View And Replacement Parts List

    21. Exploded View and Replacement Parts List 21.1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 177 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-VZ9SKE CS-VZ12SKE REMARK CHASSIS COMPLETE ACRD50C00170 ← L SHAPE PLATE (LEFT) CWD601291 ← L SHAPE PLATE (RIGHT) CWD601292 ← PIPE HOLDER (PLASTIC) CWD912541 ← INSTALLING HOLDER CWH361160 ← FAN MOTOR W/BRACKET ACRD54C00040 ←...
  • Page 178 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-VZ9SKE CS-VZ12SKE REMARK REMOTE CONTROL COMPLETE ACRA75C00100X ← USER MANUAL (eng, fre, spa, deu, ita, dut) ACRF55-00860 ← USER MANUAL (swe, nor, fin, dan, bul) ACRF55-00870 ← INSTALLATION INSTRUCTION (nor) ACRF60-01380 ←...

  • Page 179: Outdoor Unit

    21.2 Outdoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 180 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-VZ9SKE CU-VZ12SKE REMARK CHASSIS COMPLETE (W/HEATER) CWD50C1906 ← FAN MOTOR BRACKET CWD541230 ← FAN MOTOR (OUTDOOR) L6CAYYYL0040 ← SCREW - FAN MOTOR MOUNTING CWH55252J ← PROPELLER FAN ASS'Y CWH03K1060 ← NUT - PROPELLER FAN CWH56053J ←...
  • Page 181 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-VZ9SKE CU-VZ12SKE REMARK DISCHARGE TUBE - COMPRESSOR CWT340893 ← WIRE NET (OUTDOOR) CWD041205 ← PACKING MATERIAL SET ACR2VZ9SKE ACR2VZ12SKE (Note)  All parts are supplied from ACBD, Japan (Vendor Code: 00025800).  “O”...

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