Panasonic CU-BZ25XKE Service Manual
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Panasonic CU-BZ25XKE 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 products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be
replaced with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission
of manufacturer.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
R32 REFRIGERANT
– This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation,
maintenance and/or service of this product.
POWERFUL
R32
FAN SPEED/
Q UIET
REFR IGERAN T
O N
T IME R
O FF
R32
REFRIGERANT
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
CAUTION
Indoor Unit
CS-BZ25XKE
CS-BZ35XKE
CS-BZ50XKE
CS-BZ60XKE
Order No: PAPAMY2201088CE
Outdoor Unit
CU-BZ25XKE
CU-BZ35XKE
CU-BZ50XKE
CU-BZ60XKE
Destination
Europe
in the Schematic
© Panasonic Corporation 2022

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Summary of Contents for Panasonic CU-BZ25XKE

  • Page 1 – This Air Conditioner contains and operates with refrigerant R32. THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL. Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance and/or service of this product. © Panasonic Corporation 2022...

  • Page 2: Table Of Contents

    Outdoor Unit ..........20 15. Protection Control ..........76 7. Refrigeration Cycle Diagram ......22 15.1 Protection Control for All Operations ..76 CS-BZ25XKE CU-BZ25XKE 15.2 Protection Control for Cooling & Soft Dry CS-BZ35XKE CU-BZ35XKE Operation ............78 CS-BZ50XKE CU-BZ50XKE ..... 22 15.3 Protection Control for Heating Operation ...79...

  • Page 3: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Confirm the type of gas used before installation.  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 to be installed.
  • Page 4 WARNING  For R32/R410A model, use piping, flare nut and tools which is specified for R32/R410A refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. For R32 and R410A, the same flare nut on the outdoor unit side and pipe can be used.
  • Page 5 CAUTION Select an installation location which is easy for maintenance. Incorrect installation, service or repair of this air conditioner may increase the risk of rupture and this may result in loss damage or injury and/or property. Power supply connection to the room air conditioner. Use power supply cord 3 x 1.5 mm (1.0 ~ 1.5HP), 3 x 2.5 mm (2.0 ~ 2.25HP) type designation 60245 IEC 57 or heavier cord.

  • Page 6: Precaution For Using R32 Refrigerant

    2. Precaution for Using R32 Refrigerant  Pay careful attention to the following precaution points and the installation work procedures: WARNING When connecting flare at indoor side, make sure that the flare connection is used only once, if torqued up and released, the flare must be remade.
  • Page 7 CAUTION General  Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.  Must ensure that pipe-work shall be protected from physical damage.  Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.
  • Page 8 CAUTION 2-9. Checks to the refrigeration equipment  Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.  At all times the manufacturer’s maintenance and service guidelines shall be followed.  If in doubt consult the manufacturer’s technical department for assistance.
  • Page 9 CAUTION Removal and evacuation  When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: •...
  • Page 10 CAUTION Recovery  When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.  When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. ...

  • Page 11: Specifications

    3. Specifications Indoor Model CS-BZ25XKE CS-BZ35XKE Outdoor Model CU-BZ25XKE CU-BZ35XKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 2.50 3.00 0.85 3.40 3.90 Capacity BTU/h 2900 8530 10200...
  • Page 12 Indoor Model CS-BZ25XKE CS-BZ35XKE Outdoor Model CU-BZ25XKE CU-BZ35XKE Type Hermetic Motor / Rotary Hermetic Motor / Rotary Compressor Motor Type Brushless (6-poles) Brushless (6-poles) Output Power Type Cross-flow Fan Cross-flow Fan Material ASG30 ASG30 Motor Type DC (8-poles) DC (8-poles) Input Power 43.8...
  • Page 13 Indoor Model CS-BZ25XKE CS-BZ35XKE Outdoor Model CU-BZ25XKE CU-BZ35XKE Height mm (inch) 290 (11-7/16) / 542 (21-11/32) 290 (11-7/16) / 542 (21-11/32) (I/D / O/D) Width Dimension Unit mm (inch) 779 (30-11/16) / 780 (30-23/32) 779 (30-11/16) / 780 (30-23/32) (I/D / O/D)
  • Page 14 Indoor Model CS-BZ50XKE CS-BZ60XKE Outdoor Model CU-BZ50XKE CU-BZ60XKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.98 5.00 5.40 0.98 6.00 6.50 Capacity BTU/h 3340 17100 18400 3340 20500 22200 kcal/h 4300...
  • Page 15 Indoor Model CS-BZ50XKE CS-BZ60XKE Outdoor Model CU-BZ50XKE CU-BZ60XKE Type Hermetic Motor / Rotary Hermetic Motor / Rotary Compressor Motor Type Brushless (4-poles) Brushless (4-poles) Output Power Type Cross-flow Fan Cross-flow Fan Material ASG30 ASG30 Motor Type DC (8-poles) DC (8-poles) Input Power 43.8 43.8...
  • Page 16 Indoor Model CS-BZ50XKE CS-BZ60XKE Outdoor Model CU-BZ50XKE CU-BZ60XKE Height mm (inch) 290 (11-7/16) / 619 (24-3/8) 290 (11-7/16) / 695 (27-3/8) (I/D / O/D) Width Dimension Unit mm (inch) 779 (30-11/16) / 824 (32-15/32) 779 (30-11/16) / 875 (34-15/32) (I/D / O/D) Depth mm (inch) 209 (8-1/4) / 299 (11-25/32)

  • Page 17: Features

    4. Features  Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control  Environment Protection Non-ozone depletion substances refrigerant (R32)  Long Installation Piping Long piping up to 15 meters (1.0 ~ 2.0HP) and 30 meters (2.25HP) ...

  • Page 18: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Air purifying Filter Front panel Auto OFF/ON button • Use when remote control is misplaced or a malfunction occurs. Aluminium fin Air filters INDICATOR POWER (White) Horizontal airflow TIMER (White) direction louver Remote Control •...

  • Page 19: Dimensions

    6. Dimensions Indoor Unit & Remote Control <Top View> <Side View> <Side View> <Front View> Air intake direction Left piping Air outlet Right piping <Bottom View> hole direction hole <Remote Control> 99.5 <Rear View> 41-61 <Remote Control Holder> Liquid side Gas side Relative position between the indoor unit and the installation plate <Front View>...

  • Page 20: Outdoor Unit

    Outdoor Unit 6.2.1 CU-BZ25XKE CU-BZ35XKE <Top View> 67.6 (104.7) 104.9 60.5 Space necessary for installation 100 mm 100 mm 1000 mm Anchor Bolt Pitch 320 × 570 <Side View> <Side View> <Front View> 3-way valve at Gas side Unit : mm...
  • Page 21 6.2.3 CU-BZ60XKE <Top View> Space necessary for (131) 34.7 installation 100mm 100mm 1000mm Anchor Bolt Pitch 360.5 × 613 2-way valve at Liquid side (High Pressure) <Side View> 3-way valve at Gas side <Side View> <Front View> (Low Pressure) Unit : mm...

  • Page 22: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram CS-BZ25XKE CU-BZ25XKE CS-BZ35XKE CU-BZ35XKE CS-BZ50XKE CU-BZ50XKE INDOOR OUTDOOR PIPE LIQUID TEMP. EXPANSION SIDE SENSOR MUFFLER VALVE STRAINER 2-WAY VALVE PIPE INTAKE TEMP. SENSOR 1 TEMP. HEAT EXCHANGER SENSOR TEMP. (CONDENSER) SENSOR PIPE TEMP. SENSOR 2 HEAT EXCHANGER...

  • Page 23: Cs-Bz60Xke Cu-Bz60Xke

    CS-BZ60XKE CU-BZ60XKE INDOOR OUTDOOR LIQUID EXPANSION SIDE STRAINER VALVE 2-WAY PROCESS VALVE TUBE TEMP. PIPE SENSOR TEMP. CONDENSER INTAKE SENSOR 2 TEMP. SENSOR PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) SIDE 4-WAYS VALVE 3-WAY RECEIVER VALVE COMP. TEMP.

  • Page 24: Block Diagram

    8. Block Diagram CS-BZ25XKE CU-BZ25XKE CS-BZ35XKE CU-BZ35XKE...

  • Page 25: Cs-Bz50Xke Cu-Bz50Xke Cs-Bz60Xke Cu-Bz60Xke

    CS-BZ50XKE CU-BZ50XKE CS-BZ60XKE CU-BZ60XKE...

  • Page 26: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit TERMINAL BOARD TEMP. FUSE 102°C REMARKS : RY-PWR AC308 (BLK) RY-PWR2 : BLUE P : PINK BR : BROWN O : ORANGE BL : BLACK Y : YELLOW AC307 (BRW) W : WHITE G : GREEN : RED GR : GRAY FUSE301...

  • Page 27: Outdoor Unit

    Outdoor Unit 9.2.1 CU-BZ25XKE CU-BZ35XKE TO INDOOR UNIT REACTOR TERMINAL BOARD RAT2 RAT1 OUTDOOR AIR TEMP. (GRY) (GRY) SENSOR FUSE105 (THERMISTOR) (15A 250V) DATA t° (RED) CN-TH (WHT) t° NOISE PIPING TEMP. SENSOR FILTER (THERMISTOR) COMMUNICATION AC-BLK CIRCUIT CIRCUIT (BLK) CN-TANK t°...
  • Page 28 9.2.2 CU-BZ50XKE CU-BZ60XKE TO INDOOR UNIT REACTOR TERMINAL BOARD RAT2 RAT1 (GRY) (GRY) FUSE6 (20A 250V) OUTDOOR AIR TEMP. DATA SENSOR (RED) (THERMISTOR) COMMUNICATION CIRCUIT CN-TH1 NOISE (WHT) FILTER AC-BLK CIRCUIT FUSE8 PIPING TEMP. SENSOR (BLK) T3.15A (THERMISTOR) L250V FUSE1 RECTIFICATION CN-TANK (25A 250V)

  • Page 29: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit TERMINAL BOARD TEMP. FUSE 102°C RY-PWR AC308 (BLK) RY-PWR2 AC307 (BRW) FUSE301 AC303 (WHT) T3.15A L250V AC304 (RED) G301 (GRN) NOISE FILTER F301 CIRCUIT COMMUNICATION CIRCUIT EVAPORATOR 0.1µ 0.1µ RECTIFICATION CIRCUIT SW01 CN – FM FAN MOTOR (WHT) ELECTRONIC CONTROLLER...

  • Page 30: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 CU-BZ25XKE CU-BZ35XKE TO INDOOR UNIT REACTOR TERMINAL BOARD RAT2 RAT1 (GRY) (GRY) R205 R206 OUTDOOR AIR TEMP. R207 R208 ELECTRONIC SENSOR C204 C205 CONTROLLER (THERMISTOR) t° t° PIPING TEMP. SENSOR (THERMISTOR) FUSE105 (15A 250V) DATA (RED) t°...
  • Page 31 10.2.2 CU-BZ50XKE CU-BZ60XKE TO INDOOR UNIT REACTOR TERMINAL BOARD RAT2 RAT1 (GRY) (GRY) FUSE6 (20A 250V) 15.8k DATA (RED) 470μ COMMUNICATION 1μ 1μ OUTDOOR AIR TEMP. CIRCUIT NOISE SENSOR (15kΩ 3950) FILTER AC-BLK CIRCUIT t° FUSE8 (BLK) T3.15A t° L250V FUSE1 RECTIFICATION CN-TH1...

  • Page 32: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC303 G301 AC304 RY-PWR CN-FM CN-CNT CN-RMT CN-STM1 CN-TH JP1 (Random Auto Restart enable/disable) CN-DISP...
  • Page 33 11.1.2 Indicator & Receiver Printed Circuit Board LED201 LED202 CN-DISP...

  • Page 34: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board 11.2.1.1 CU-BZ25XKE CU-BZ35XKE POWER TRANSISTOR (IPM) CN-MTR2 CN-MTR1 CN-HOT CN-TH CN-TANK CN-STM AC-WHT DATA AC-BLK...
  • Page 35 11.2.1.2 CU-BZ50XKE CU-BZ60XKE POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...

  • Page 36: Installation Instruction

    12. Installation Instruction 12.1 Select the Best Location ** The required minimum room area, A , shall also 12.1.1 Indoor Unit be governed by the safety factor margin formula below :  Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.

  • Page 37: 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. Ceiling Wall More than More than Wall More 2 screw Indoor unit than 216 mm 168 mm Measuring Tape Installation PIPE...
  • Page 38 12.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping Insert the piping sleeve to the hole. Fix the bushing to the sleeve. Wall Cut the sleeve until it extrudes about 15 mm Indoor Outdoor from the wall. 15 mm Approx.
  • Page 39 12.2.3 Indoor Unit Installation Pull out the Indoor piping ● 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 40 Change the drain hose position Rear view for left piping installation PIPE HOLE CENTER 115mm TO HOLE CENTER Connection cable Drain hose Connection cable Piping More than 950 mm Drain hose Drain cap Adjust the piping slightly Sleeve for piping hole downwards.
  • Page 41 Tape Colour of wires (connection cable) Power supply Terminals on the indoor unit cord (Power supply cord) Tape Terminals on the isolating (L) (N) devices (Disconnecting means) Connection cable Recommended WARNING length (mm) This equipment must be refer table below properly earthed.

  • Page 42: 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, screws or nails.
  • Page 43 AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.3.1 Air Tightness Test on the Refrigerating System Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation. There is no extra refrigerant in the outdoor unit for air purging. •...
  • Page 44 12.3.2 Connect the Cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Terminal Board Connection cable between indoor unit and Earth wire outdoor unit shall be approved longer than polychloroprene sheathed 4 × 1.5 mm others (1.0 ~ 1.5HP) or 4 ×...
  • Page 45 12.3.5 How to Take Out Front Grille Please follow the steps below to take out front grille if necessary such as when installing or servicing. Front panel Open front panel. Remove the 3 mounting screws on the front grille as shown in the illustration at right. Slide the 3 lock knobs on the upside of front grille to unlock position.
  • Page 46 12.3.8 Disposal of Outdoor Unit Drain Water  If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm.  If the unit is used in an area where temperature falls below 0°C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.
  • Page 47 12.3.12 In case of Reusing Existing Refrigerant Piping  Observe the followings to decide reusing the existing refrigerant piping. Poor refrigerant piping could result in product failure.  In the circumstances listed below, do not reuse any refrigerant piping. Instead, make sure to install a new piping. Heat insulation is not provided for either liquid-side or gas-side piping or both.

  • Page 48: 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 49 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 50: 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 51 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 52 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 53 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 54: 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 55: 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 56: 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 57 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 58 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 59 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 60: 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 61 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 62 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 63 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 Solidus Liquidus Kgf•cm applications temp material Liquidity is good at low temperature, 49.0 14.5...
  • Page 64 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 65 (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 66: 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 67 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 68: 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 69: 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 70: Outdoor Fan Motor Operation

    [Heating]  According to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control  Immediately after the fan motor started, feedback control is performed once every second.  During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart.
  • Page 71 Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below. It does not swing during fan motor stop. When the air conditioner is stopped using remote control, the vane will shift to close position.

  • Page 72: Timer Control

    Side View (Outer Vane) Closed Position Stopper 115º Reference point Step 1 Step 2 Step 3 Step 4 Step 5 Figure 2 * The horizontal vane angle tolerance is within +/- 5 degree. 14.4.2 Horizontal Airflow  The horizontal airflow direction louver can be adjusted manually by hand. 14.5 Timer Control ...

  • Page 73: Sleep Mode Operation

    14.6 Sleep Mode Operation This operation provide comfortable environment while sleeping. It will automatically adjust the sleep pattern temperature during the activation period. SLEEP This operation is incorporated with the activation timer (0.5, 1, 2, 3, 4, 5, 6, 7, 8 or 9 hours). Start Condition: ...

  • Page 74: Random Auto Restart Control

     Heating mode i t c Set Temp -1°C 1 Hr Max 9 Hrs  Sleep operation will not undergo temperature shift when it collaborate with below operation. However, it will execute the delay timer. Powerful mode operation Auto mode operation Stop Condition: ...

  • Page 75: Quiet Operation (Heating)

    14.10 Quiet Operation (Heating) A. Purpose To provide quiet heating operation compare to normal operation. B. Control condition a. Quiet operation start condition When "FAN SPEED/QUIET" button at remote control is pressed continuously until QUIET will be shown on remote control display. b.

  • Page 76: 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 77 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 78: 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 79: 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 80 15.3.5 Cold Draught Prevention Control  When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced. 15.3.6 Deice Operation  When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks.

  • Page 81: Servicing Mode

    16. Servicing Mode 16.1 Auto OFF/ON Button AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds.

  • Page 82: Heat Only Operation

    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 83: Remote Control Button

    16.3 Remote Control Button 16.3.1 SET Button  To check remote control transmission code and store the transmission code to EEPROM. Press “Set” button by using pointer. Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code change. LCD returns to original display if remote control does not operate for 30 seconds.
  • Page 84  To limit set temperature range for COOL & DRY, HEAT, AUTO mode. Press “Set” button by using pointer. Press TEMP increment or decrement button to choose No. 3. Press Timer increment or decrement button to select desired temperature low limit of set temperature for COOL &...
  • Page 85 Press Timer Set button to confirm high limit selection. Press TEMP increment or decrement button to choose No. 5. Press Timer increment or decrement button to select desired temperature low limit of set temperature for HEAT mode. Normal display mode Press SW to enter customer zone &...
  • Page 86 Press TEMP increment or decrement button to choose No. 12. Press Timer increment or decrement button to select desired temperature low limit of set temperature for AUTO mode. Normal display mode Press SW to enter customer zone & Press SW’s to choose function 12 i) Display latest set temp (Low3).
  • Page 87 16.3.2 RESET (RC)  To clear and restore the remote control setting to factory default. Press once to clear the memory. 16.3.3 RESET (AC)  To restore the unit’s setting to factory default. Press once to restore the unit’s setting. 16.3.4 TIMER ...
  • Page 88 16.3.6 Customization mode LCD display area: Customization display area (highlighted in color) POWERFUL FAN SPEED/ QUIET TIMER Function Options (If any) Cannot enter this customization mode under the following conditions: 1 Operation ON. 2 Under [Real/ON/OFF] time setting mode. To enter Customer zone: Normal display Customer Zone mode...
  • Page 89 Customization list table: Note: The functions described in the table may not be applicable to the model and may subject to change without further notice. Customization Options Remark Name Remote control number selection A, B, C, D Solar radiation sensitivity level adjustment 1, 2, 3, 4, 5 [iAUTO-X/iAUTO/iCOMF, Cool &...
  • Page 90 Customization Options Remark Name 01 – Offset 1 Compressor Fhmax setting selection 02 – Offset 2 03 – Offset 3 Service Zone 00 – Disable Compressor Max Fc setting selection 01 – Enable 73 ~ 99 Reserve...

  • Page 91: 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 92: Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current

    17.2 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 93: Breakdown Self Diagnosis Function

    17.3 Breakdown Self Diagnosis Function 17.3.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  Every press of the button (up or down) will Once abnormality has occurred during operation, increase abnormality numbers and transmit the unit will stop its operation, and Timer LEDs abnormality code signal to the main unit.

  • Page 94: Error Codes Table

    17.4 Error Codes 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 95 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation  Check indoor/outdoor Wrong wiring and connection wire and connection Abnormal wiring or — — connecting pipe, expansion pipe piping connection valve abnormality  Expansion valve and lead wire and connector ...

  • Page 96: Self-Diagnosis Method

    17.5 Self-diagnosis Method 17.5.1 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 97 17.5.2 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 98 17.5.3 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 99 17.5.4 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 100 17.5.5 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 101 17.5.6 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 102 17.5.7 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 103 17.5.8 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 104 17.5.9 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 105 17.5.10 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 106 17.5.11 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 107 17.5.12 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 108 17.5.13 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 109 17.5.14 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 110 17.5.15 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 111 17.5.16 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 112 17.5.17 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 113 17.5.18 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 114 17.5.19 F11 (4-way valve Abnormality) 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 115 17.5.20 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 116 17.5.21 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 117 17.5.22 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...
  • Page 118 17.5.23 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...
  • Page 119 17.5.24 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 120 17.5.25 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data (120°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 121 17.5.26 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 122 17.5.27 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 123 17.5.28 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 124: Disassembly And Assembly Instructions

    18. Disassembly and Assembly Instructions WARNING High Voltage are 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 Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 18.1.1...
  • Page 125 6. Remove the Particular Piece from the 3 hooks. Figure 3 9. Remove the earth wire screw. 11. Detach all connectors as labelled from the Main Electronic Controller. Then pull out the Main Electronic Controller gently. AC303 10. Pull out the Main Electronic Controller halfway.
  • Page 126 18.1.3 To Remove Discharge Grille 13. Pull out and remove the Drain Hose from the Discharge Grille. 12. Remove the 2 screws of the Discharge Grille. 14. Then pull the Discharge Grille downward gently to dismantle it. Figure 6 18.1.4 To Remove Control Board 15.
  • Page 127 18.1.5 To Remove Cross Flow Fan and Indoor Fan Motor 16. Remove the screw that holding the Cross Flow Fan and Fan Motor axis. Figure 8 18. Remove the Bearing by pulling it gently. 17. Remove the screw from the Evaporator. Figure 9...
  • Page 128 Evaporator 19. Push the holdfast to the left and lift up the Evaporator. 21. Fan Motor can be removed after the removal of the Cross Flow Fan. Reminder: To reinstall the Fan Motor, adjust the Fan Motor connector to 60° towards you before fixing Control Board Cross Flow Fan 20.

  • Page 129: Outdoor Electronic Controller Removal Procedure

    18.2 Outdoor Electronic Controller Removal Procedure 18.2.1 CU-BZ25XKE CU-BZ35XKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Screws Top Panel Release 3 Terminal Screws Connectors, L, N and Earth Wire Screw.
  • Page 130 18.2.2 CU-BZ50XKE Caution! When handling electronic controller, be careful of electrostatic discharge. 1. Remove the 5 screws of the Top Panel. 5. Remove the Control Board as follows: Fig. 1 Fig. 4 2. Remove the 8 screws of the Front Panel. Fig.
  • Page 131 18.2.3 CU-BZ60XKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove 2 screws for the plate of Terminal Board Cover. Top Panel Screw Plate of Terminal Board Cover Screws Screws Screws Fig.

  • Page 132: Technical Data

    Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 19.1.1 CS-BZ25XKE CU-BZ25XKE Indoor (°C) Outdoor DB (°C) 19.0 3005 2367 387 2934 2345 470 2872 2330 506 2665 2240 582 2949 2359 410 2763 2278 534 2500 2206 680 22.0 3201 1798 409 3069 1782 502 3100 1785 454 3050 1767 485 3142 1817 408 2993 1755 540 2723 1660 685...
  • Page 133 19.1.4 CS-BZ60XKE CU-BZ60XKE Indoor (°C) Outdoor DB (°C) 19.0 6694 5378 1604 6211 5006 1613 6674 5332 1569 6813 5433 1505 7218 5639 1300 6751 5367 1605 6000 4629 1980 22.0 7564 4672 1412 7228 4325 1628 7376 4443 1670 7366 4429 1570 7900 4686 1312 7378 4421 1633 6674 4077 2012 15.7 5530 4777 1111 5449 4849 1245 5168 4692 1028 5024 4642 1068 4846 4510 606 5146 4706 1047 5360 4881 1931 18.4 6558 4287 1716 6757 4450 1549 6635 4402 1557 6474 4324 1637 6768 4483 1122 6609 4385 1605 6029 4155 1972 13.3 3883 3869 917 4462 4373 789 3820 3744 838 3984 3978 923 3530 3459 444 3983 3904 762 4078 3997 1236...

  • Page 134: 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-BZ25XKE CU-BZ25XKE Indoor (°C) Outdoor WB (°C) 1590 2105 2500 2918 3173 1604 2140 2610 3150 3358 1550 2179 2747 3130 3602 19.2.2...

  • Page 135: 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 Room Temperature: 27/19°C, Cooling Characteristic Fan: High Pipe Length: 5.0m Freq: Rated Fc 20.1.1 CS-BZ25XKE CU-BZ25XKE Outdoor Air Temperature (°C) 4.00 3.50 3.00 2.50 2.00 1.50 1.00...
  • Page 136 20.1.2 CS-BZ35XKE CU-BZ35XKE Outdoor Air Temperature (°C) 6.00 5.50 5.00 4.50 4.00 3.50 3.00 2.50 Outdoor Air Temperature (°C) 1.10 1.05 1.00 0.95 0.90 0.85 0.80 Outdoor Air Temperature (°C)
  • Page 137 20.1.3 CS-BZ50XKE CU-BZ50XKE 14.00 13.00 12.00 11.00 10.00 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Outdoor Air Temperature (°C) 10.0 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Outdoor Air Temperature (°C) 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Outdoor Air Temperature (°C)
  • Page 138 20.1.4 CS-BZ60XKE CU-BZ60XKE 18.00 17.00 16.00 15.00 14.00 13.00 12.00 11.00 10.00 9.00 8.00 Outdoor Air Temperature (°C) 10.00 9.50 9.00 8.50 8.00 7.50 7.00 6.50 6.00 5.50 5.00 4.50 4.00 3.50 3.00 Outdoor Air Temperature (°C) 1.10 1.05 1.00 0.95 0.90 0.85...

  • Page 139: Heat Mode Outdoor Air Temperature Characteristic

    20.2 Heat Mode Outdoor Air Temperature Characteristic Room Temperature: 20°C, Heating Characteristic Fan: High Pipe Length: 5.0m Freq: Rated Fh 20.2.1 CS-BZ25XKE CU-BZ25XKE Outdoor Air Temperature (°C) 4.00 3.75 3.50 3.25 3.00 2.75 2.50 2.25 2.00 Outdoor Air Temperature (°C) 3.50...
  • Page 140 20.2.2 CS-BZ35XKE CU-BZ35XKE Outdoor Air Temperature (°C) 5.50 5.00 4.50 4.00 3.50 3.00 2.50 Outdoor Air Temperature (°C) 3.50 3.00 2.50 2.00 1.50 1.00 Outdoor Air Temperature (°C)
  • Page 141 20.2.3 CS-BZ50XKE CU-BZ50XKE Outdoor Air Temperature (°C) Outdoor Air Temperature (°C) Outdoor Air Temperature (°C)
  • Page 142 20.2.4 CS-BZ60XKE CU-BZ60XKE Outdoor Air Temperature (°C) 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 Outdoor Air Temperature (°C) 4.00 3.50 3.00 2.50 2.00 Outdoor Air Temperature (°C)

  • Page 143: 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-BZ25XKE CU-BZ25XKE CS-BZ35XKE CU-BZ35XKE 1.02 1.00 0.98 0.96 0.94 0.92 Pipe Length (m) 1.04 1.02 1.00 0.98 0.96 0.94 0.92...
  • Page 144 20.3.2 CS-BZ50XKE CU-BZ50XKE 1.04 1.00 0.96 0.92 0.88 Pipe Length (m) 1.01 1.01 1.00 1.00 0.99 0.99 0.98 Pipe Length (m) Note: The graphs show the factor after added right amount of additional refrigerant.
  • Page 145 20.3.3 CS-BZ60XKE CU-BZ60XKE 1.03 1.01 0.99 0.97 0.95 10 12 14 16 20 22 24 26 28 30 32 Pipe Length (m) 1.01 1.00 0.99 0.98 10 12 14 16 20 22 24 26 28 30 32 Pipe Length (m) Note: The graphs show the factor after added right amount of additional refrigerant.

  • Page 146: Exploded View And Replacement Parts List

    21. Exploded View and Replacement Parts List 21.1 Indoor Unit CWH55025J CWH55051AJ 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 147 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-BZ25XKE CS-BZ35XKE REMARK CHASSIS COMPLETE ACXD50C03410 ← FAN MOTOR L6CBYYYL0311 ← CROSS-FLOW FAN COMPLETE ACXH02C01190 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C29310 ← FLARE NUT (LIQUID) CWT251048 ←...
  • Page 148 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-BZ50XKE CS-BZ60XKE REMARK CHASSIS COMPLETE ACXD50C03410 ACXD50C03730 FAN MOTOR L6CBYYYL0311 ← CROSS-FLOW FAN COMPLETE ACXH02C01190 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C29360 ACXB30C29320 FLARE NUT (LIQUID) CWT251048 ←...

  • Page 149: Outdoor Unit

    21.2 Outdoor Unit 21.2.1 CU-BZ25XKE CU-BZ35XKE 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 150 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-BZ25XKE CU-BZ35XKE REMARK CHASSIS COMPLETE ACXD52K00150 ← SOUND PROOF MATERIAL (TOP) CWG302737 ← FAN MOTOR BRACKET CWD541157 ← SCREW - FAN MOTOR BRACKET ACXH55-07140 ← FAN MOTOR L6CAYYYL0124 ← SCREW - FAN MOTOR MOUNT CWH55252J ←...
  • Page 151 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-BZ25XKE CU-BZ35XKE REMARK INSTALLATION INSTRUCTION ACXF60-46000 ← INSTALLATION INSTRUCTION ACXF60-46010 ← INSTALLATION INSTRUCTION ACXF60-46020 ← INSTALLATION INSTRUCTION ACXF60-46030 ← INSTALLATION INSTRUCTION ACXF60-46040 ← INSTALLATION INSTRUCTION ACXF60-46050 ← ACXG86-05700 ← BASE BOARD - COMPLETE ACXG62C02400 ←...
  • Page 152 21.2.2 CU-BZ50XKE 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 153 4-WAYS VALVE ACXB00-01290 V-COIL COMPLETE (4-WAY VALVE) ACXA43C00250 O-RING ACXB81-06510 V-COIL COMPLETE (EXP. VALVE) ACXA43C06110 DISCHARGE MUFFLER CWB121058 STRAINER CWB11094 PANASONIC BADGE CWE373439 ACCESSORY - COMPLETE ACXH82C21740 SOUND PROOF MATERIAL CWG302952 SOUND PROOF MATERIAL CWG302745 OPERATING INSTRUCTION ACXF55-32840 OPERATING INSTRUCTION ACXF55-32850...
  • Page 154 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-BZ50XKE REMARK INSTALLATION INSTRUCTION ACXF60-45980 INSTALLATION INSTRUCTION ACXF60-45990 INSTALLATION INSTRUCTION ACXF60-46000 INSTALLATION INSTRUCTION ACXF60-46010 INSTALLATION INSTRUCTION ACXF60-46020 INSTALLATION INSTRUCTION ACXF60-46030 INSTALLATION INSTRUCTION ACXF60-46040 INSTALLATION INSTRUCTION ACXF60-46050 ACXG86-05710 BASE BOARD COMP. ACXG62C02410 SHOCK ABSORBER (L) ACXG70-14450A SHOCK ABSORBER (R) ACXG70-14440A...
  • Page 155 21.2.3 CU-BZ60XKE 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 156 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-BZ60XKE REMARK CHASSIS COMPLETE ACXD52K00320 FAN MOTOR BRACKET ACXD54-00140 SCREW - FAN MOTOR BRACKET ACXH55-07140 FAN MOTOR L6CAYYYL0076 SCREW - FAN MOTOR MOUNT CWH551106J PROPELLER FAN ASSY ACXH03K00070 NUT - PROPELLER FAN CWH56053J COMPRESSOR 9RD132XAA21...
  • Page 157 PART NAME & DESCRIPTION QTY. CU-BZ60XKE REMARK INSTALLATION INSTRUCTION ACXF60-46010 INSTALLATION INSTRUCTION ACXF60-46020 INSTALLATION INSTRUCTION ACXF60-46030 INSTALLATION INSTRUCTION ACXF60-46040 PANASONIC BADGE CWE373439 OPERATING INSTRUCTION ACXF55-32700 INSTALLATION INSTRUCTION ACXF60-46050 ACXG86-05720 BASE BOARD - COMPLETE ACXG62C02440 SHOCK ABSORBER - LEFT ACXG70-14460A SHOCK ABSORBER - RIGHT ACXG70-14470A C.

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