Panasonic CS-HZ12RKE Service Manual
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Panasonic CS-HZ12RKE 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.
Indoor Unit
AIR CONDITIO NE R
+8/10°C
MO DE
HEAT
CS-HZ9RKE
ECO NAVI
OFF/ON
MO DE
+8/10°C
HEAT
T E MP
CS-HZ12RKE
POWERFUL/QUIET
AIR SWING
FAN SPEED
T IME R
O N
SE T
1
2
3
CANCEL
O FF
CS-HZ9RKE-4
AC
RC
SE T CHECK
CLO CK
RESE T
CS-AZ9RKE
WARNING
CAUTION
Order No: PAPAMY1507114CE
Outdoor Unit
CU-HZ9RKE
CU-HZ12RKE
CU-HZ9RKE-4
CU-AZ9RKE
Destination
North Europe
© Panasonic Corporation 2015.

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Summary of Contents for Panasonic CS-HZ12RKE

  • 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 14.7 Powerful Mode Operation ......66     Safety Precautions ..........3     14.8 Timer Control ..........66     14.9 Auto Restart Control ........66 Precaution For Using R32 Refrigerant ..... 6         14.10 Indication Panel ..........67  ...

  • 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 CAUTION 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-HZ9RKE CS-HZ9RKE-4 CS-AZ9RKE Model Outdoor CU-HZ9RKE CU-HZ9RKE-4 CU-AZ9RKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 0.85 2.50 3.00 Capacity BTU/h 2900 8530 10200 kcal/h 2150 2580 Running Current – 2.20 – Input Power Annual Consumption –...
  • Page 11 Indoor CS-HZ9RKE CS-HZ9RKE-4 CS-AZ9RKE Model Outdoor CU-HZ9RKE CU-HZ9RKE-4 CU-AZ9RKE Type Cross-Flow Fan Material ASG33 Motor Type DC / Transistor (8-poles) Input Power 44.9 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1090 Heat 1270 Cool 1150 Heat 1340 Type Propeller Fan Material...
  • Page 12 Indoor CS-HZ9RKE CS-HZ9RKE-4 CS-AZ9RKE Model Outdoor CU-HZ9RKE CU-HZ9RKE-4 CU-AZ9RKE Inner Diameter Drain Hose Length Fin Material Aluminium (Pre Coat) Fin Type Slit Fin Indoor Heat Exchanger Row × Stage × FPI 2 × 17 × 21 Size (W × H × L) 636.5 ×...
  • Page 13 Indoor CS-HZ12RKE Model Outdoor CU-HZ12RKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 0.85 3.50 4.00 Capacity BTU/h 2900 11900 13600 kcal/h 3010 3440 Running Current – 3.80 – Input Power Annual Consumption – –...
  • Page 14 Indoor CS-HZ12RKE Model Outdoor CU-HZ12RKE Type Cross-flow Fan Material ASG33 Motor Type DC / Transistor (8-poles) Input Power 44.9 Output Power Cool Heat Cool Heat Cool Speed Heat 1020 Cool 1130 Heat 1300 Cool 1200 Heat 1370 Type Propeller Fan...
  • Page 15 Indoor CS-HZ12RKE Model Outdoor CU-HZ12RKE Inner Diameter Drain Hose Length Fin Material Aluminium (Pre Coat) Fin Type Slit Fin Indoor Heat Exchanger Row × Stage × FPI 2 × 17 × 21 Size (W × H × L) 636.5 × 357 × 25.4...

  • Page 16: Features

    Features  Inverter Technology Wider output power range Energy saving More precise temperature control  Long Installation Piping Long piping up to 20 meters during single split connection only  Easy to use remote control  Quality Improvement Random auto restart after power failure for safety restart operation Gas leakage protection Prevent compressor reverse cycle Inner protector to protect Compressor...

  • Page 17: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Air Filters Front panel Auto OFF/ON button • Use when remote control is misplaced or a malfunction occurs. Aluminium fin Sunlight Sensor and Remote Control Receiver (Maximum distances: 8m) Vertical airflow direction louver •...

  • Page 18: Dimensions

    6. Dimensions Indoor Unit <Top View> <Side View> <Side View> <Front View> Air intake direction Right ping hole Left ping Air outlet hole direction <Bottom View> <Remote Control Transmitter> AIR CONDITIONER MODE +8/ 10°C HE AT ECONAVI OFF/ON MODE +8 /10°C TEMP HEAT AIR SWING...

  • Page 19: Outdoor Unit

    Outdoor Unit <Top View> Space necessary for 68.5 installation (124) (53.4) 10cm 10cm 100cm Anchor Bolt Pitch 330 x 540 <Side View> <Side View> <Front View> 3-way valve at Gas side Unit : mm (Low Pressure) 2-way valve at Liquid side (High Pressure)

  • Page 20: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram INDOOR OUTDOOR LIQUID SIDE MUFFLER STRAINER EXPANSION PIPE 2-WAY VALVE TEMP. VALVE SENSOR INTAKE INTAKE TEMP. TEMP. SENSOR SENSOR PIPE TEMP. SENSOR HEAT EXCHANGER HEAT EXCHANGER (CONDENSER) (EVAPORATOR) SIDE 4-WAY VALVE 3-WAY TANK VALVE TEMP. SENSOR MUFFLER COMPRESSOR COOLING...

  • Page 21: Block Diagram

    8. Block Diagram Indoor Power Supply Connection...

  • Page 22: Outdoor Power Supply Connection

    Outdoor Power Supply Connection...

  • Page 23: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit...

  • Page 24: Outdoor Unit

    Outdoor Unit YELLOW (YLW) FOR OUTDOOR POWER SUPPLY CONNECTION REMARKS; SINGLE PHASE BLUE(BLU) RED (RED) BLACK; (BLK) BLUE; (BLU) TO INDOOR UNIT POWER SUPPLY WHITE; (WHT) RED; (RED) (BLK ) (WHT ) (RED) (TRADEMARK) YELLOW; (YLW) GRAY; (GRY) REACTOR COMPRESSOR TERMINAL GREEN;...

  • Page 25: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit...

  • Page 26: Outdoor Unit

    10.2 Outdoor Unit FOR OUTDOOR POWER SUPPLY CONNECTION SINGLE PHASE TO INDOOR UNIT POWER SUPPLY (BLK ) (WHT ) (RED) REAC TOR TERMINAL (BLK) (WHT) (RED) BOARD ELECTRONIC CONTROLLER RAT2 RAT1 (GRY) (GRY) DATA (RED) COMMUNICATION NOISE FILTER CIRCUIT FUSE 103 CIRCUIT AC-BLK (20A 250V)

  • Page 27: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board 11.1.2 Main Printed Circuit Board AC303 RY-PWR CN-FM CN-TH CN-STM2 CN-STM1 CN-RCV CN-DISP CN-STM4 CN-CNT JP1 (Random Auto Restart enable/disable) CN-RMT 11.1.3 Indicator Printed Circuit Board LED301 LED302 LED304 LED305 LED307 LED306 CN-DISP...
  • Page 28 11.1.4 Receiver Printed Circuit Board CN-RCV 11.1.5 Fuse Printed Circuit Board ACN501 ACN502 ACL501 ACL502...

  • Page 29: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board DATA CN-MTR2 AC-BLK AC-WHT CN-STM CN-HOT CN-TH1 CN-MTR1 CN-TANK CURRENT TRANSFORMER CN-S (CT) POWER TRANSISTOR (IPM)

  • Page 30: 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 Piping direction Attention not to bend WARNING...

  • Page 31: 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 More than Indoor unit More screw than 128 mm 241.5 mm Installation plate For best strength of 128 mm INDOOR unit installation,...
  • Page 32 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 Shock absorber...
  • Page 33 Replace the drain hose Rear view for left piping installation Connection cable Piping More than 950 mm Drain hose Drain hose Sleeve for piping hole Drain cap • • How to pull the piping and drain hose out, in case In case of left piping how to insert of the embedded piping.
  • Page 34 7. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 flexible cord, type designation 60245 IEC 57 or heavier cord. Do not use joint connection cable. Replace the wire if the existing wire (from concealed wiring, or otherwise) is too short. Allowable connection cable length of each indoor unit shall be 30 mm or less.
  • Page 35 Terminal Board Control Board Earth wire longer than Recommended others length (mm) AC wires for safety reason Holder a b c d Recommended Tape length (mm) 50 40 35 60 Indoor & outdoor connection cable Connection Outdoor unit cable 6. Secure the connection cable onto the control board with the holder. ...
  • Page 36 12.2.4.4 Cutting and flaring the piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. Please make flare after inserting the flare nut onto the copper pipes.

  • Page 37: 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. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 38 12.3.2.2 Connecting the piping to Outdoor 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 39 12.3.4 Connect the cable to the Outdoor Unit 1. Remove the control board cover from the unit by loosening the screw. 2. Connect cables to the unit. 12.3.4.1 In case of indoor power supply 3. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 flexible cord, type designation 60245 IEC 57 or heavier cord.
  • Page 40 Terminals on the indoor unit Colour of wires (connection cable) Terminals on the outdoor unit (Power supply cord) (L) (N) Terminals on the isolating devices (Disconnecting means) 6. Secure the power supply cord and connection cable onto the control board with the holder. 7.

  • 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

    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 4. Any sound from the expansion valve? (when starting the operation and the outdoor unit is turned on, the expansion valve is re-set, check if there is any edged sound or clack sound) 13.8.3 Guidance for diagnosis of refrigerant cycle Cooling mode Comparison with normal operation...

  • Page 61: Operation And Control

    14. Operation and 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: Indoor Fan Motor Operation

    14.1.5 Automatic Operation  This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.  During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.

  • Page 63: Outdoor Fan Motor Operation

    ii. Auto Fan Speed [Cooling, Dry]  According to room temperature and setting temperature, indoor fan speed is determined automatically.  The indoor fan will operate according to pattern below. [1 pattern : 10 s] Speed Higher Medium Lower [Fan] ...
  • Page 64 14.4.1 Vertical Airflow Upper Vane Angle (°) Lower Vane Angle (°) Operation Mode Airflow Direction Auto with Heat Exchanger Temperature Heating Summer House Manual Auto 45 ~ 70 2 ~ 39 Cooling and Fan Manual Auto 45 ~ 70 2 ~ 39 Soft Dry Manual 1.

  • Page 65: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    2. Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as Figure 2 above. Pattern Airflow Direction Patterns at Remote Control Vane Angle (°) 77.5 102.5 14.5 Quiet operation (Cooling Mode/Cooling area of Dry Mode)

  • Page 66: Powerful Mode Operation

    C. Control contents a. Fan Speed manual 1. Fan speed is changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB. 2. Fan speed for quiet operation is reduced from setting fan speed. b.

  • Page 67: Indication Panel

    14.10 Indication Panel POWER TIMER +8/10°C HEAT DEICE POWERFUL QUIET ECONAVI Color Green Orange Green Blue Orange Orange Green Timer Setting +8/10°C HEAT Powerful Mode Light ON Operation ON Deice ON Quiet Mode ON Econavi ON Timer Setting +8/10°C HEAT Powerful Mode Light OFF Operation OFF...

  • Page 68: Econavi Operation

    14.11 ECONAVI Operation  ECONAVI start condition:  When ECONAVI button is pressed.  ECONAVI stop conditions:  When ECONAVI button is pressed again.  When unit is OFF by OFF/ON button.  When unit is OFF when OFF TIMER activates. ...
  • Page 69 14.11.1.2 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: Remote control normal mode Press & release Press to choose No.2 TEMP Sensitivity Level 1: Less sensitive to sunlight intensity Default: (Battery insert)
  • Page 70 14.11.1.3 Judge Ambient Condition  According to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny, cloudy or night. 14.11.1.4 Temperature Shift ECONAVI ; Detecting sunlight intensity, the unit adjust temperature to save energy. Ambient condition Sunny Night/Cloudy...
  • Page 71  To disable sunlight sensor check mode After check mode is ended (5 minutes counter elapsed), press AUTO OFF/ON button at indoor unit. If the sunlight sensor detected sunlight intensity is at abnormal range, the check mode will be ended. Please check for error code.

  • Page 72: 8/10°C Heat Operation

    14.12 +8/10°C Heat Operation  +8/10°C Heat 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 heat button on the remote control. ...

  • Page 73: 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 74 15.1.4 Compressor Overheating Prevention Control  Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.  ° If compressor discharge temperature exceeds 103 C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.

  • Page 75: Protection Control For Cooling & Soft Dry Operation

    15.2 Protection Control For Cooling & Soft Dry Operation 15.2.1 Outdoor Air Temperature Control  The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.  This control will begin 1 minute after the compressor starts. ...

  • Page 76: Protection Control For Heating Operation

    15.2.6 Dew Prevention Control 2  To prevent dew formation at indoor unit discharge area.  This control starts if all conditions continue for 20 minutes: Operated with Cooling or Soft Dry Mode. Indoor intake temperature is between 25°C and 29°C. Outdoor air temperature is less than 30°C.
  • Page 77 15.3.3 Overload Protection Control  The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below.  If the heat exchanger temperature exceeds 60°C, compressor will stop. 60°C Frequency Reduce 52°C Frequency Limited 49°C 46°C Free Indoor Heat Exchanger Temp.

  • Page 78: Servicing Mode

    16. Servicing Mode 16.1 Auto OFF/ON Button Auto OFF/ON Auto OFF/ON Auto OFF/ON Button pressed Button pressed Button pressed 5 sec 5 sec Auto Operation Test Run Operation Stop Test Run Operation Stop (Forced cooling operation) (Forced heating operation) Beep Beep ×...

  • Page 79: Remote Control Button

    REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...

  • Page 80: Troubleshooting Guide

    17. Troubleshooting Guide 17.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table on the...
  • Page 81 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 82: 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.  Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will light up again.

  • Page 83: Error Code Table

    17.3 Error Code Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only  Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
  • Page 84  ECO sensor ECO sensor ECO sensor open or Continuous for 70s — abnormality short circuit  ECO and Indoor PCB Outdoor high High pressure sensor open  High pressure sensor Continuous for 1 pressure sensor — circuit during compressor minutes ...

  • Page 85: Self-Diagnosis Method

    17.4 Self-diagnosis Method 17.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions  During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused  Faulty indoor unit PCB.
  • Page 86 17.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions  During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted. ...
  • Page 87 17.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 88 17.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.  Faulty sensor.
  • Page 89 17.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions  An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused  Lack of gas  Broken CT (current transformer) ...
  • Page 90 17.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused ...
  • Page 91 17.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 92 17.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 93 17.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 94 17.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 95 17.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 96 17.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions  The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit and outdoor unit PCBs used.  Indoor unit or outdoor unit PCB defective.
  • Page 97 17.4.13 H34 (Outdoor Heat Sink Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 98 17.4.14 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 99 17.4.15 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 100 17.4.16 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused  Operation stops due to short circuit inside the fan motor winding. ...
  • Page 101 17.4.17 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions  Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
  • Page 102 17.4.18 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions  Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused ...
  • Page 103 17.4.19 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions  When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
  • Page 104 17.4.20 F17 (Indoor Standby Units Freezing Abnormality) Malfunction Decision Conditions  When the different between indoor intake air temperature and indoor pipe temperature is above 10°C or indoor pipe temperature is below -1.0°C. Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
  • Page 105 17.4.21 F90 (Power Factor Correction Protection) Malfunction Decision Conditions  To maintain DC voltage level supply to power transistor.  To detect high DC voltage level after rectification. Malfunction Caused  During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
  • Page 106 17.4.22 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions  The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused  Lack of gas.  3-way valve close. Troubleshooting When F91 indication happens For safety reason and to prevent component breakdown, always switch Caution...
  • Page 107 17.4.23 F93 (Compressor Rotation Failure) Malfunction Decision Conditions  A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused  Compressor terminal disconnect  Faulty Outdoor PCB  Faulty compressor Troubleshooting For safety reason and to prevent component When F93 indication happens breakdown, always switch off the power...
  • Page 108 17.4.24 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions  During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
  • Page 109 17.4.25 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
  • Page 110 17.4.26 F97 (Compressor Overheating) Malfunction Decision Conditions  During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused  Faulty compressor tank temperature sensor  2/3 way valve closed ...
  • Page 111 17.4.27 F98 (Input Over Current Detection) Malfunction Decision Conditions  During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
  • Page 112 17.4.28 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused  DC current peak due to compressor failure. ...

  • Page 113: Disassembly And Assembly Instructions

    18. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 18.1 Indoor Unit 18.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal...
  • Page 114 9. Pull out the 10. Detach 7 connectors as labeled from the electronic controller. electronic Then pull out electronic controller gently. controller halfway. AC303 8. Remove screw to RY-PWR remove terminal board complete. CN-FM 7. Detach the CN-TH connectors CN2 (Black), GND (Green), CN-STM2 and CN1 (White)
  • Page 115 18.1.1.4 To remove control board Figure 6 18.1.1.5 To remove cross flow fan and indoor fan motor Figure 7...
  • Page 116 Figure 8 Figure 9...
  • Page 117 Figure 10...

  • Page 118: Outdoor Electronic Controller Removal Procedure

    18.2 Outdoor Electronic Controller Removal Procedure Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Remove the 8 screws of the Front Panel. Fig.

  • Page 119: Technical Data

    1987 1930 1892 1834 1798 15.8 2043 1742 2524 1844 2252 1724 (Dry bulb value based on 46% humidity) 19.1.2 CS-HZ12RKE / CU-HZ12RKE Indoor (°C) Outdoor DB (°C) 19.0 4186 3331 3934 3168 3500 3007 22.0 4672 2522 4333 2400...

  • Page 120: Heat Mode Performance Data

    1570 4820 1560 3200 3726 2884 1394 3739 1489 3739 1485 4223 1489 4858 1475 3443 3979 19.2.2 CS-HZ12RKE / CU-HZ12RKE Indoor Outdoor WB (°C) (°C) -20/-21 -15/-16 -10/-11 -7/-8 12/11 3057 1736 3895 1946 3521 1647 4635 2030 5479...

  • Page 121: Service Data

    20. Service Data Service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode. 20.1 Cool Mode Outdoor Air Temperature Characteristic Condition  Room Temperature: 27/19°C, Cooling Characteristic  Fan: High ...
  • Page 122 20.1.2 CS-HZ12RKE / CU-HZ12RKE 17.50 16.50 15.50 14.50 13.50 12.50 11.50 Outdoor Air Temperature (ºC) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 Outdoor Air Temperature (ºC) 1.10 159.00 1.05 152.00 1.00 145.00 0.95 138.00 131.00 0.90 0.85 124.00 Outdoor Air Temperature (ºC)

  • Page 123: Heat Mode Outdoor Air Temperature Characteristic

    20.2 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-HZ9RKE / CU-HZ9RKE CS-HZ9RKE-4 / CU-HZ9RKE-4 CS-AZ9RKE / CU-AZ9RKE Outdoor Air Temperature (ºC) 2.80 2.60 2.40...
  • Page 124 20.2.2 CS-HZ12RKE / CU-HZ12RKE Outdoor Air Temperature (ºC) 4.50 4.00 3.50 3.00 2.50 2.00 1.50 Outdoor Air Temperature (ºC) 348.00 333.50 319.00 304.50 290.00 275.50 261.00 246.50 232.00 217.50 203.00 Outdoor Air Temperature (ºC)

  • Page 125: 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 Cooling Capacity 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 0.94 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Piping Length (m) 1.0084 1.0000...

  • Page 126: Exploded View And Replacement Parts List

    21. Exploded View and Replacement Parts List 21.1 Indoor Unit CWH55025J CWH55051J AIR CO NDIT IO NE R +8/ 10°C HEAT MO DE ECONAVI OFF/ON MO DE +8 /10 °C TE MP HEAT POWERFUL/QUIET AIR SW ING FAN SPEED T IMER O FF CANCEL SET CHE CK...
  • Page 127 SAFETY REF. NO. PART NAME & DESCRIPTION CS-HZ9RKE CS-HZ9RKE-4 REMARK CHASSY COMPLETE CWD50C1893 ← FAN MOTOR ARW7676ACCB ← CROSS - FLOW FAN CO. CWH02C1137 ← BEARING ASSY CWH64K1010 ← SENSOR COMPLETE CWA50C2122 ← EVAPORATOR CO. CWB30C5060 ← FLARE NUT (LIQUID) CWT251030 ←...
  • Page 128 SAFETY REF. NO. PART NAME & DESCRIPTION CS-HZ9RKE CS-HZ9RKE-4 REMARK INSTALLATION INSTRUCTION CWF616872 ← (Note)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).  “O” marked parts are recommended to be kept in stock.
  • Page 129 SAFETY REF. NO. PART NAME & DESCRIPTION CS-AZ9RKE CS-HZ12RKE REMARK CHASSY COMPLETE CWD50C1893 ← FAN MOTOR ARW7676ACCB ← CROSS - FLOW FAN CO. CWH02C1137 ← BEARING ASSY CWH64K1010 ← SENSOR COMPLETE CWA50C2122 ← EVAPORATOR CO. CWB30C5060 ← FLARE NUT (LIQUID) CWT251030 ←...
  • Page 130 SAFETY REF. NO. PART NAME & DESCRIPTION CS-AZ9RKE CS-HZ12RKE REMARK INSTALLATION INSTRUCTION CWF616872 ← (Note)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).  “O” marked parts are recommended to be kept in stock.

  • Page 131: 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 132 SAFETY REF. NO. PART NAME & DESCRIPTION CU-HZ9RKE CU-HZ9RKE-4 REMARK CHASSY ASS'Y CWD52K1359 ← SOUND PROOF MATERIAL CWG302630 ← FAN MOTOR BRACKET CWD541167 ← SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR, DC 40W 3PH ARS6411AC ← SCREW - FAN MOTOR MOUNT CWH55252J ←...
  • Page 133 SAFETY REF. NO. PART NAME & DESCRIPTION CU-AZ9RKE CU-HZ12RKE REMARK CHASSY ASS'Y CWD52K1359 ← SOUND PROOF MATERIAL CWG302630 ← FAN MOTOR BRACKET CWD541167 ← SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR, DC 40W 3PH ARS6411AC ← SCREW - FAN MOTOR MOUNT CWH55252J ←...

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