Panasonic CS-Z25TKEA Service Manual
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Panasonic CS-Z25TKEA 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 Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the
installation, maintenance and/or service of this product.
POWERFUL
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
CAUTION
Indoor Unit
CS-Z25TKEA
CS-Z35TKEA
CS-Z42TKEA
CS-Z50TKEA
CS-Z71TKEA
Order No: PAPAMY1802076CE
Outdoor Unit
CU-Z25TKEA
CU-Z35TKEA
CU-Z42TKEA
CU-Z50TKEA
CU-Z71TKEA
Destination
Europe
in the Schematic
© Panasonic Corporation 2018.

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Summary of Contents for Panasonic CS-Z25TKEA

  • 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 2018.

  • Page 2: Table Of Contents

    Indoor Unit ..........28     Disassembly and Assembly Instructions ... 118     Outdoor Unit ..........29     18.1 CS-Z25TKEA CS-Z35TKEA ....118     Electronic Circuit Diagram ......31     18.2 CS-Z42TKEA CS-Z50TKEA   CS-Z71TKEA ........... 124  ...

  • 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 Do not perform flare connection inside a building or dwelling or room, when joining the heat exchanger of indoor unit with interconnecting piping. Refrigerant connection inside a building or dwelling or room must be made by brazing or welding. Joint connection of indoor unit by flaring method can only be made at outdoor or at outside of a building or dwelling or room.
  • Page 5 CAUTION Do not touch the sharp aluminium fin, sharp parts may cause injury. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture. 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.

  • 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: Specifications

    3. Specifications Model CS-Z25TKEA CS-Z35TKEA Indoor POS (EAN) 5025232873319 5025232873333 Model CU-Z25TKEA CU-Z35TKEA Outdoor POS (EAN) 5025232873326 5025232873340 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...
  • Page 11 Model CS-Z25TKEA CS-Z35TKEA Indoor POS (EAN) 5025232873319 5025232873333 Model CU-Z25TKEA CU-Z35TKEA Outdoor POS (EAN) 5025232873326 5025232873340 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...
  • Page 12 Model CS-Z25TKEA CS-Z35TKEA Indoor POS (EAN) 5025232873319 5025232873333 Model CU-Z25TKEA CU-Z35TKEA Outdoor POS (EAN) 5025232873326 5025232873340 Height mm (inch) 295 (11-5/8) / 619 (24-3/8) 295 (11-5/8) / 619 (24-3/8) (I/D / O/D) Width Dimension Unit mm (inch) 919 (36-3/16) / 824 (32-15/32)
  • Page 13 Model CS-Z42TKEA CS-Z50TKEA Indoor POS (EAN) 5025232873357 5025232873364 Model CU-Z42TKEA CU-Z50TKEA Outdoor POS (EAN) 5025232873388 5025232873395 Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.98 4.20 5.00 0.98 5.00 6.00 Capacity BTU/h...
  • Page 14 Model CS-Z42TKEA CS-Z50TKEA Indoor POS (EAN) 5025232873357 5025232873364 Model CU-Z42TKEA CU-Z50TKEA Outdoor POS (EAN) 5025232873388 5025232873395 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 ASG33 ASG33 Motor Type...
  • Page 15 Model CS-Z42TKEA CS-Z50TKEA Indoor POS (EAN) 5025232873357 5025232873364 Model CU-Z42TKEA CU-Z50TKEA Outdoor POS (EAN) 5025232873388 5025232873395 Height mm (inch) 302 (11-29/32) / 619 (24-3/8) 302 (11-29/32) / 695 (27-3/8) (I/D / O/D) Width Dimension Unit mm (inch) 1120 (44-1/8) / 824 (32-15/32) 1120 (44-1/8) / 875 (34-15/32) (I/D / O/D) Depth...
  • Page 16 Model CS-Z71TKEA Indoor POS (EAN) 5025232873371 Model CU-Z71TKEA Outdoor POS (EAN) 5025232873401 Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 0.98 7.10 8.10 Capacity BTU/h 3340 24200 27600 kcal/h 6110 6970 Running Current – 9.90 –...
  • Page 17 Model CS-Z71TKEA Indoor POS (EAN) 5025232873371 Model CU-Z71TKEA Outdoor POS (EAN) 5025232873401 Type Hermetic Motor / Rotary Compressor Motor Type Brushless (4-poles) Output Power 1.70k Type Cross-flow Fan Material ASG33 Motor Type DC (8-poles) Input Power 105.0 Output Power Cool Heat Cool Heat...
  • Page 18 Model CS-Z71TKEA Indoor POS (EAN) 5025232873371 Model CU-Z71TKEA Outdoor POS (EAN) 5025232873401 Height mm (inch) 302 (11-29/32) / 695 (27-3/8) (I/D / O/D) Width Dimension Unit mm (inch) 1120 (44-1/8) / 875 (34-15/32) (I/D / O/D) Depth mm (inch) 236 (9-5/16) / 320 (12-5/8) (I/D / O/D) Weight Net (I/D / O/D)

  • Page 19: 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 20 meters (Z25~42TKEA) and 30 meters (Z50/71TKEA) during single split connection only ...

  • Page 20: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Front panel Aluminium fin Auto OFF/ON button Use when remote control is misplaced or a malfunction occurs. Horizontal airflow direction louver Do not adjust by hand. Sunlight Sensor and Vertical airflow direction louver Remote Control Receiver Manually adjustable.

  • Page 21: Dimensions

    6. Dimensions Indoor Unit 6.1.1 CS-Z25TKEA CS-Z35TKEA <Top View> <Side View> <Front View> <Side View> Air intake direction 2 ±0.5 2 ±0.5 Left piping Air outlet Right piping hole direction hole <Bottom View> <Remote Control> 15.5 <Rear View> Gas side...
  • Page 22 6.1.2 CS-Z42TKEA CS-Z50TKEA CS-Z71TKEA <Top View> <Side View> <Front View> <Side View> Air intake 1120 direction Left piping Air outlet Right piping direction hole hole <Bottom View> <Remote Control> 15.5 Liquid side Gas side <Rear View> (41-61) Relative position between the indoor unit and the installation plate <Front View> 16.5 Installation plate...

  • Page 23: Outdoor Unit

    Outdoor Unit 6.2.1 CU-Z25TKEA CU-Z35TKEA CU-Z42TKEA <Top View> Space necessary for 68.7 installation (124) (62.6) 100 mm 100 mm 1000 mm Anchor Bolt Pitch 330 × 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 24: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram CS-Z25TKEA CU-Z25TKEA CS-Z35TKEA CU-Z35TKEA CS-Z42TKEA CU-Z42TKEA INDOOR OUTDOOR LIQUID EXPANSION TEMP. SIDE MUFFLER VALVE STRAINER SENSOR 2-WAY VALVE PIPE TEMP. INTAKE SENSOR 2 TEMP. SENSOR CONDENSER PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR)

  • Page 25: Cs-Z50Tkea Cu-Z50Tkea Cs-Z71Tkea Cu-Z71Tkea

    CS-Z50TKEA CU-Z50TKEA CS-Z71TKEA CU-Z71TKEA INDOOR OUTDOOR LIQUID EXPANSION SIDE MUFFLER VALVE STRAINER 2-WAY (Z71TKE only) 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...

  • Page 26: Block Diagram

    8. Block Diagram CS-Z25TKEA CU-Z25TKEA CS-Z35TKEA CU-Z35TKEA CS-Z42TKEA CU-Z42TKEA...

  • Page 27: Cs-Z50Tkea Cu-Z50Tkea Cs-Z71Kea Cu-Z71Tkea

    CS-Z50TKEA CU-Z50TKEA CS-Z71KEA CU-Z71TKEA...

  • Page 28: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit ELECTRONIC CONTROLLER (SUB) REMARKS BLUE PINK RY-PWR BROWN ORANGE BLACK YELLOW WHITE GREEN RY-PWR2 GROUNDING GRAY TERMINAL YELLOW/GREEN CN-DATA1 (WHT) (BLACK) (YELLOW) (BROWN) HAJEM-A AC302 ACL501 AC306 TERMINAL (WHT) BOARD W W W AC306 (BLK) CN-DATA1 FUSE301...

  • Page 29: Outdoor Unit

    Outdoor Unit 9.2.1 CU-Z25TKEA CU-Z35TKEA CU-Z42TKEA YELLOW (YLW) OR (C) REMARKS BLU: BLUE BLUE BLK: BLACK TO INDOOR UNIT (BLU) (RED) WHT: WHITE OR (R) OR (S) RED: RED YLW: YELLOW (TRADEMARK) TERMINAL REACTOR GRY: GRAY COMPERSSOR TERMINAL BOARD GRN: GREEN THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER RAT2...
  • Page 30 9.2.2 CU-Z50TKEA CU-Z71TKEA TO INDOOR UNIT YELLOW (YLW) OR (C) REACTOR BLUE TERMINAL REMARKS (BLU) (RED) BOARD BLU : BLUE OR (R) OR (S) BLK : BLACK WHT : WHITE TRADEMARK RED : RED YLW : YELLOW RAT2 RAT1 COMPRESSOR TERMINAL DATA GRY : GRAY (GRY)

  • Page 31: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit ELECTRONIC CONTROLLER (SUB) HAJEM-A (WHT) 0.01u RY-PWR RY-PWR 0.01u RY-PWR2 GROUNDING RY-PWR2 TERMINAL TH303 F301 CN-DATA1 (YELLOW) (BROWN) (BLACK) (WHT) AC302 ACL501 AC306 500mA TERMINAL BOARD W W W AC306 CN-DATA1 1000p (BLK) (YLW) FUSE301 T3.15A L250V...

  • Page 32: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 CU-Z25TKEA CU-Z35TKEA CU-Z42TKEA TO INDOOR UNIT TERMINAL REACTOR BOARD RAT2 RAT1 DATA (GRY) (GRY) (RED) COMMUNICATION NOISE FILTER CIRCUIT 15.8k FUSE 5 AC-BLK CIRCUIT 470u (20A 250V) (BLK) FUSE 1 (20A 250V) OUTDOOR AIR TEMP. SENSOR CN-TH1 FUSE 8 FUSE 6...
  • Page 33 10.2.2 CU-Z50TKEA CU-Z71TKEA TO INDOOR UNIT REACTOR TERMINAL BOARD RAT2 RAT1 DATA (GRY) (GRY) (RED) COMMUNICATION 15.8k NOISE FILTER CIRCUIT FUSE 5 470u CIRCUIT AC-BLK (20A 250V) (BLK) FUSE 6 FUSE 8 FUSE 1 (20A 250V) (T3.15A, (25A 250V) OUTDOOR AIR TEMP. SENSOR L250V) CN-TH1 (THERMISTOR)

  • Page 34: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC303 CN-FM CN-DATA1 CN-CNT CN-STM1 CN-STM3 CN-DISP CN-RMT CN-TH JP1 (Random Auto Restart enable/disable)
  • Page 35 11.1.2 Indicator Printed Circuit Board (CS-Z25TKEA CS-Z35TKEA) LED205 LED203 LED201 LED206 LED204 LED202 CN-DISP 11.1.3 Sub Printed Circuit Board AC302 ACL501 ACN501 CN-DATA1 AC306 ACN502 11.1.4 Indicator Printed Circuit Board (CS-Z42TKEA CS-Z50TKEA CS-Z71TKEA) LED205 LED203 LED201 LED202 LED206 LED204 CN-DISP...

  • Page 36: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...

  • Page 37: Installation Instruction

    12. Installation Instruction 12.1 Select the Best Location (5/4) = (M / (2.5 × (LFL) × h 12.1.1 Indoor Unit = Required minimum room area, in m  Do not install the unit in excessive oil fume area = Refrigerant charge amount in appliance, in such as kitchen, workshop and etc.

  • Page 38: 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 Wall More than 1 More than 1 More Indoor unit 2 screw than 2 Installation 266 mm plate 1 266 mm...
  • Page 39 12.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping Insert the piping sleeve to the hole. Wall Fix the bushing to the sleeve. Indoor Outdoor Cut the sleeve until it extrudes about 15 mm 15 mm from the wall.
  • Page 40 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 41 Exchange the drain hose and the cap Rear view for left piping installation Connection cable Piping More than 950mm (1.0 ~ 1.75HP) or Drain hose 1150mm (2.0 ~ 2.5HP) Connection cable Drain hose Drain hose Drain cap Sleeve for piping hole Adjust the piping slightly downwards.
  • Page 42 Remove the tapes and connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram below. Colour of wires (connection cable) Terminals on the indoor unit (Power supply cord) Terminals on the isolating (L) (N) devices (Disconnecting means) Terminal Board...
  • Page 43 12.2.4.1 Wire Stripping Connecting and Requirement Wire stripping RISK OF FIRE JOINING OF WIRES MAY CAUSE OVERHEATING No loose strand WARNING AND FIRE. when inserted Indoor/outdoor Do not joint wires connection terminal board 5 mm or more (gap between wires) Conductor Conductor over Conductor not...

  • Page 44: 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 45 AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.3.3 Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. 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 46 12.3.4 Connect the Cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 mm (1.0 ~ 1.75HP) or 4 × 2.5 mm (2.0 ~ 2.5HP) flexible cord, type designation 60245 IEC 57 or heavier cord.
  • Page 47 12.3.6 Remote Controller Mounting, Installation and Connection Remote CAUTION controller cable Install the remote controller cable at least 5 cm away from electric wires of other appliances to avoid miss-operation (electromagnetic noise). Connector Remote controller 3 Remote controller cable ■ Remote control mounting location Remote controller 3 ...
  • Page 48 Embed an outlet box (JIS C 8336) into the wall. Outlet box maybe purchased separately. Medium size square outlet box (obtain locally) Part No. DS3744 (Panasonic Co., Ltd.) or equivalent. Secure the remote controller lower case to the outlet box with the two accessory screws 4. Make sure that the lower case is flat againts the wall at this time, with no bending.
  • Page 49 12.3.7 How to Take Out Front Grille Please follow the steps below to take out front grille if Screw necessary such as when servicing. Front Set the vertical airflow direction louvers to the grille horizontal position. Vane Slide down the 2 caps (1.0 ~ 1.75HP) or 3 (Move the caps (2.0 ~ 2.5HP) on the front grille as vane to...
  • Page 50 12.3.10 Check the Drainage  Open front panel and remove air filters. (Drainage checking can be carried out without removing the front grille.)  Pour a glass of water into the drain tray-styrofoam.  Ensure that water flows out from drain hose of the indoor unit.

  • Page 51: 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 52 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 53: 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 54 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 55 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 56 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 57: 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 58: 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 59: 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 60 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 61 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 62 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 63: 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 64 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 65 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 66 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 67 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 68 (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 69: Reference> Analysis Method For No Error

    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 70 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 71: 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 72: 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 73: 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 74: Airflow Direction

    14.4 Airflow Direction  There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).  Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
  • Page 75 Side View (Inner Vane) Reference point 128º (Z25/35TKEA) 148º (Z42/50/71TKEA) Step 1 Stopper Step 2 Step 3 Closed Position Step 4 Step 5 Side View (Outer Vane) Closed Stopper Position 156º (Z25/35TKEA) 101º (Z42/50/71TKEA) Reference point Step 1 Step 2 Step 3 Step 4 Step 5...

  • Page 76: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    14.5 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode)  Purpose To provide quiet cooling operation compare to normal operation.  Control condition Quiet operation start condition  When “POWERFUL/QUIET” button at remote control is pressed twice. QUIET will be shown on remote control display. Quiet operation stop condition ...

  • Page 77: Timer Control

    14.8 Timer Control  There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.  If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence. 14.8.1 ON Timer Control ...

  • Page 78: Auto Restart Control

    SELECT “1” will be blinking, press to set programme 1. OFF/ON Press TIMER to select ON or OFF timer. DOWN Press TIMER to select your desired time. TEMP If you want to set the timer together with your desired temperature, press to select the temperature.

  • Page 79: 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 80 Compressor = OFF 103°C 88°C Compressor Frequency Reduce 99°C 87°C Compressor Frequency Maintain 96°C 86°C Free Comp. temperature 15.1.5 Low Pressure Prevention Control (Gas Leakage Detection)  Control start conditions For 5 minutes, the compressor continuously operates and outdoor total current is between 0.75A and 0.95A (Z25/35/42TK), 1.38A and 1.65A (Z50/71TK).

  • Page 81: 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 82: 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 83 15.3.4 Low Temperature Compressor Oil Return Control  In heating operation, if the outdoor temperature falls below -10°C when compressor starts, the compressor frequency will be regulated up to 600 seconds. 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 ...

  • Page 84: 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 85: 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 86 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 87: Breakdown Self Diagnosis Function

    17.2 Breakdown Self Diagnosis Function 17.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  When the latest abnormality code on the main Once abnormality has occurred during operation, unit and code transmitted from the remote the unit will stop its operation, and Timer LED controller are matched, power LED will light blinks.

  • Page 88: Error Codes Table

    17.3 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 89 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 90: 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 91 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 92 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 93 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 94 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 95 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 > 2550 rpm or < 50 rpm) Malfunction Caused ...
  • Page 96 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 97 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 98 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 99 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 100 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 101 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 102 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 103 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 104 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 105 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 106 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 107 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 108 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 109 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 110 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 111 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...
  • Page 112 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...
  • Page 113 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 114 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 115 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 116 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 117 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 118: Disassembly And Assembly Instructions

    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 CS-Z25TKEA CS-Z35TKEA 18.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 18.1.1.1...
  • Page 119 18.1.1.3 To Remove Electronic Controller Figure 2 Figure 3 Figure 4...
  • Page 120 18.1.1.4 To Remove Discharge Grille Figure 5 18.1.1.5 To Remove Control Board Figure 6 18.1.1.6 To Remove Cross Flow Fan and Indoor Fan Motor Figure 7...
  • Page 121 Figure 8 Figure 9...
  • Page 122 Figure 10 18.1.1.7 To Assemble the Front Grille Figure 11 Figure 12...
  • Page 123 18.1.1.8 To Assemble the Intake Grille Figure 13...

  • Page 124: Cs-Z42Tkea Cs-Z50Tkea Cs-Z71Tkea

    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. 18.2 CS-Z42TKEA CS-Z50TKEA CS-Z71TKEA 18.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 18.2.1.1...
  • Page 125 18.2.1.3 To Remove Electronic Controller Figure 2 Figure 3 Figure 4...
  • Page 126 18.2.1.4 To Remove Discharge Grille Figure 5 18.2.1.5 To Remove Control Board Figure 6...
  • Page 127 18.2.1.6 To Remove Cross Flow Fan and Indoor Fan Motor Figure 7 Figure 8 Figure 9...
  • Page 128 Figure 10 18.2.1.7 To Assemble the Front Grille Figure 11 Figure 12...
  • Page 129 18.2.1.8 To Assemble the Intake Grille Figure 13...

  • Page 130: Outdoor Electronic Controller Removal Procedure

    18.3 Outdoor Electronic Controller Removal Procedure 18.3.1 CU-Z25TKEA CU-Z35TKEA CU-Z42TKEA 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. 4 Fig. 1 Remove the 8 screws of the Front Panel. Fig.
  • Page 131 18.3.2 CU-Z50TKEA CU-Z71TKEA 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

    Technical data provided are based on the air conditioner running under free frequency. 19.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 19.1.1 CS-Z25TKEA/CU-Z25TKEA Indoor (°C) Outdoor DB (°C) 19.0 2618...
  • Page 133 19.1.3 CS-Z42TKEA/CU-Z42TKEA Indoor (°C) Outdoor DB (°C) 19.0 4642 4189 4926 4445 5244 4074 4984 3713 22.0 5059 2982 5392 3279 5711 3124 5203 3107 15.7 4790 4320 4357 4136 3431 3053 4315 4035 18.4 4572 2997 4935 3236 2565 1507 4575 2772...
  • Page 134 19.1.5 CS-Z71TKEA/CU-Z71TKEA Indoor (°C) Outdoor DB (°C) 19.0 7575 6303 1568 7588 5588 1922 8018 5604 1484 8083 5666 1509 22.0 8390 4832 1537 8816 4582 1612 8946 4563 1357 8752 4525 1561 15.7 7151 6595 1820 7317 5566 1688 7368 5614 1377...

  • Page 135: 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-Z25TKEA/CU-Z25TKEA Indoor (°C) Outdoor WB (°C) -15/-16 -7/-8 12/11 2919 1275 3143 1340 3795 1187 3170 3282 3030 1180 3330 1290...

  • Page 136: Service Data

    Condition Indoor room temperature: 27°C Dry Bulb/19°C Wet Bulb Unit setting: Standard piping length, forced cooling at 16°C, Hi fan Compressor frequency: Rated for cooling operation Piping length: 5m Voltage: 230V 20.1.1 CS-Z25TKEA CU-Z25TKEA 16.00 15.50 15.00 14.50 14.00 13.50 Outdoor Air Temperature (°C)
  • Page 137 20.1.2 CS-Z35TKEA CU-Z35TKEA 15.00 14.50 14.00 13.50 13.00 12.50 12.00 11.50 11.00 10.50 10.00 Outdoor Air Temperature (°C) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 Outdoor Air Temperature (°C) 1.05 1.00 0.95 0.90 0.85 0.80 Outdoor Air Temperature (°C)
  • Page 138 20.1.3 CS-Z42TKEA CU-Z42TKEA 18.00 17.50 17.00 16.50 16.00 15.50 15.00 14.50 14.00 Outdoor Air Temperature (°C) 5.50 5.00 4.50 4.00 3.50 3.00 2.50 2.00 Outdoor Air Temperature (°C) 1.15 1.10 1.05 1.00 Outdoor Air Temperature (°C)
  • Page 139 20.1.4 CS-Z50TKEA CU-Z50TKEA 17.0 16.0 15.0 14.0 13.0 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 Outdoor Air Temperature (°C) 8.00 7.00 6.00 5.00 4.00 3.00 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 Outdoor Air Temperature (°C) 1.20 1.10...
  • Page 140 20.1.5 CS-Z71TKEA CU-Z71TKEA 17.0 16.0 15.0 14.0 13.0 12.0 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 Outdoor Air Temperature (°C) 15.00 14.00 13.00 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 Outdoor Air Temperature (°C)

  • Page 141: Heat Mode Outdoor Air Temperature Characteristic

    Indoor room temperature: 20°C Dry Bulb/ -°C Wet Bulb Unit setting: Standard piping length, forced heating at 30°C, Hi fan Compressor frequency: Rated for Heating operation Piping length: 5m Voltage: 230V 20.2.1 CS-Z25TKEA CU-Z25TKEA Outdoor Air Temperature (°C) 4.00 3.50 3.00 2.50 2.00...
  • Page 142 20.2.2 CS-Z35TKEA CU-Z35TKEA Outdoor Air Temperature (°C) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 1.50 Outdoor Air Temperature (°C) Outdoor Air Temperature (°C)
  • Page 143 20.2.3 CS-Z42TKEA CU-Z42TKEA Outdoor Air Temperature (°C) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 1.50 Outdoor Air Temperature (°C) Outdoor Air Temperature (°C)
  • Page 144 20.2.4 CS-Z50TKEA CU-Z50TKEA 50.00 45.00 40.00 35.00 30.00 25.00 20.00 -21 -19 -17 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 10.00 9.00 8.00 7.00 6.00...
  • Page 145 20.2.5 CS-Z71TKEA CU-Z71TKEA 65.00 60.00 55.00 50.00 45.00 40.00 35.00 30.00 25.00 20.00 -21 -19 -17 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 16.00 15.00 14.00...

  • Page 146: 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-Z25TKEA CU-Z25TKEA CS-Z35TKEA CU-Z35TKEA CS-Z42TKEA CU-Z42TKEA 1.02 Cooling Capacity 1.0084 1.01 1.0000 1.00 0.9941 0.99 0.9859 0.98 0.9812 0.97 0.9773...
  • Page 147 20.3.2 CS-Z50TKEA CU-Z50TKEA CS-Z71TKEA CU-Z71TKEA Cooling Capacity 1.03 1.0159 1.01 1.0000 0.9889 0.99 0.9800 0.97 0.9746 0.95 0.951634 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pipe Length (m) 1.01 Heating Capacity...

  • Page 148: Exploded View And Replacement Parts List

    21. Exploded View and Replacement Parts List 21.1 Indoor Unit 21.1.1 CS-Z25TKEA CS-Z35TKEA CWH55025J CWH55051J 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 149 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z25TKEA CS-Z35TKEA REMARK CHASSIS COMPLETE ACXD50C00200 ← FAN MOTOR L6CBYYYL0175 ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 ← PARTICULAR PIECE CWD933067B ← EVAPORATOR CWB30C4659...
  • Page 150 21.1.2 CS-Z42TKEA CS-Z50TKEA CS-Z71TKEA CWH55025J CWH55051J 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 151 REF. SAFETY PART NAME & DESCRIPTION QTY. CS-Z42TKEA CS-Z50TKEA CS-Z71TKEA REMARK CHASSIS COMPLETE ACXD50C01590 ← ← FAN MOTOR ARW7676ACCB ← L6CBYYYL0194 CROSS-FLOW FAN COMPLETE CWH02C1136 ← ← BEARING ASSY CWH64K1010 ← ← SCREW - CROSS-FLOW FAN CWH551146 ← ← PARTICULAR PIECE CWD933067B ←...

  • Page 152: Outdoor Unit

    21.2 Outdoor Unit 21.2.1 CU-Z25TKEA CU-Z35TKEA CU-Z42TKEA 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 ← ← V-COIL COMPLETE - EXP. VALVE ACXA43C00640 ← ← DISCHARGE MUFFLER CWB121058 ← ← STRAINER CWB11094 ← ← PANASONIC BADGE CWE373439 ← ← BAG - COMPLETE CWG87C900 ← ← SOUND PROOF MATERIAL CWG302745 ← ← INSTALLATION INSTRUCTION ACXF60-27950 ←...
  • Page 154 REF. SAFETY PART NAME & DESCRIPTION QTY. CU-Z25TKEA CU-Z35TKEA CU-Z42TKEA REMARK INSTALLATION INSTRUCTION ACXF60-28000 ← ← INSTALLATION INSTRUCTION ACXF60-28010 ← ← INSTALLATION INSTRUCTION ACXF60-28020 ← ← INSTALLATION INSTRUCTION ACXF60-28030 ← ← INSTALLATION INSTRUCTION ACXF60-28040 ← ← INSTALLATION INSTRUCTION ACXF60-28050 ← ←...
  • Page 155 21.2.2 CU-Z50TKEA CU-Z71TKEA 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 PLATE - C. B. COVER TERMINAL CWH131470 ← PACKING CWB81043 TUBE ASSY (CAPPILARY TUBE) ACXT00C05240 RECEIVER CWB14011 CWB14030 ACCUMULATOR ACXB13-00010 PANASONIC BADGE CWE373439 ← SOUND PROOF MATERIAL CWG302636 ← SOUND PROOF MATERIAL - COMP. TOP CWG302630 CWG302246 DISCHARGE MUFFLER CWB121013 SOUND PROOF MATERIAL...
  • Page 157 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z50TKEA CU-Z71TKEA REMARK OPERATING INSTRUCTION ACXF55-19300 ← INSTALLATION INSTRUCTION ACXF60-27950 ← INSTALLATION INSTRUCTION ACXF60-27960 ← INSTALLATION INSTRUCTION ACXF60-27970 ← INSTALLATION INSTRUCTION ACXF60-27980 ← INSTALLATION INSTRUCTION ACXF60-27990 ← INSTALLATION INSTRUCTION ACXF60-28000 ← INSTALLATION INSTRUCTION ACXF60-28010 ←...

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