Panasonic CS-Z20XKEW Service Manual
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Panasonic CS-Z20XKEW 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.
CS-Z20XKEW
CS-Z25XKEW
CS-Z35XKEW
CS-Z42XKEW
CS-XZ20XKEW
CS-XZ25XKEW
CS-XZ35XKEW
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
CAUTION
Order No: PAPAMY2101002CE
Indoor Unit
© Panasonic Corporation 2021.
Outdoor Unit
CU-Z20XKE
CU-Z25XKE
CU-Z35XKE
CU-Z42XKE
CU-Z20XKE
CU-Z25XKE
CU-Z35XKE
Destination
Europe
Turkey
in the Schematic

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Summary of Contents for Panasonic CS-Z20XKEW

  • 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 2021.
  • Page 2 CAUTION Before performing any of the electrical installation works, please verify on which of the intended connection use. Generally there are 2 types of indoor-outdoor connections: ○ Single Connection (Single Indoor Unit connects with Single Outdoor Unit) ○ Multiple Connection (Multiple Indoor Unit connect with Single Outdoor Unit) Both connections have different connecting methods.

  • Page 3: Table Of Contents

    19.2 Outdoor Electronic Controller Removal 13.3 Refrigerant piping installation • Tools used Procedure ..........153 in services ..........62 19.3 Panasonic Comfort Cloud ......154 13.4 New installation, Relocation, Repairing of Refrigerant Cycle System 20. Technical Data ..........167 The Procedures .......... 66 20.1...
  • Page 4 22. Exploded View and Replacement Parts List ..............185 22.1 Indoor Unit ..........185 22.2 Outdoor Unit ..........194  Specifications, designs and contents in this Service Manual are subject to change without notice.

  • Page 5: 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 installed.
  • Page 6 Engage authorized dealer or specialist for installation and servicing. If installation or servicing done by the user is incorrect, it will cause water leakage, electrical shock or fire. For refrigeration system work, install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or fire.
  • Page 7 CAUTION Installation or servicing work. It may need two people to carry out the installation or servicing work. 10. Keep any required ventilation openings clear of obstruction. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use a high temperature solder iron.

  • Page 8: 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 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 9 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 10 CAUTION 2-10. Checks to electrical devices  Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.  Initial safety checks shall include but not limit to:- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking. That there is no live electrical components and wiring are exposed while charging, recovering or purging the system.
  • Page 11 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 12 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 13: Specifications

    3. Specifications Indoor CS-Z20XKEW, CS-XZ20XKEW Model Outdoor CU-Z20XKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. 0.75 2.05 2.65 Capacity BTU/h 2560 6990 9040 kcal/h 1760 2280 Running Current 2.15 Input Power Annual Consumption EER CLASS 4.69...
  • Page 14 Indoor CS-Z20XKEW, CS-XZ20XKEW Model Outdoor CU-Z20XKE Type Hermetic Motor / Rotary Compressor Motor Type Brushless (6-poles) Output Power Type Cross-flow fan Material ASG30 Motor Type DC (8-pole) Input Power 47.1 Output Power Cool Heat Cool Heat Cool Speed Heat Cool...
  • Page 15 Indoor CS-Z20XKEW, CS-XZ20XKEW Model Outdoor CU-Z20XKE Height (ID / OD) mm (inch) 295 (11-5/8) / 542 (21-11/32) Dimension Unit Width (ID / OD) mm (inch) 870 (34-9/32) / 780 (30-23/32) Depth (ID / OD) mm (inch) 229 (9-1/32) / 289 (11-13/32)
  • Page 16 Indoor CS-Z25XKEW, CS-XZ25XKEW Model Outdoor CU-Z25XKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. 0.85 2.50 3.50 Capacity BTU/h 2900 8530 11900 kcal/h 2150 3010 Running Current 2.40 Input Power Annual Consumption EER Class 5.00 4.90 3.89 BTU/hW 17.06...
  • Page 17 Indoor CS-Z25XKEW, CS-XZ25XKEW Model Outdoor CU-Z25XKE Type Hermetic Motor / Rotary Compressor Motor Type Brushless (6-poles) Output Power Type Cross-flow fan Material ASG30 Motor Type DC (8-pole) Input Power 47.1 Output Power Cool Heat Cool Heat Cool Speed Heat Cool Heat 1010 Cool...
  • Page 18 Indoor CS-Z25XKEW, CS-XZ25XKEW Model Outdoor CU-Z25XKE Height (ID / OD) mm (inch) 295 (11-5/8) / 542 (21-11/32) Dimension Unit Width (ID / OD) mm (inch) 870 (34-9/32) / 780 (30-23/32) Depth (ID / OD) mm (inch) 229 (9-1/32) / 289 (11-13/32) Weight Net (I/D / O/D) kg (lb)
  • Page 19 Indoor CS-Z35XKEW / CS-XZ35XKEW Model Outdoor CU-Z35XKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. 0.85 3.50 4.20 Capacity BTU/h 2900 11900 14300 kcal/h 3010 3610 Running Current 3.90 Input Power 1.16k Annual Consumption EER CLASS 4.25 4.12 3.62...
  • Page 20 Indoor CS-Z35XKEW / CS-XZ35XKEW Model Outdoor CU-Z35XKE Type Hermetic Motor / Rotary Compressor Motor Type Brushless (6-poles) Output Power Type Cross-flow fan Material ASG30 Motor Type DC (8-pole) Input Power 47.1 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1000 Heat...
  • Page 21 Indoor CS-Z35XKEW / CS-XZ35XKEW Model Outdoor CU-Z35XKE Height (ID / OD) mm (inch) 295 (11-5/8) / 542 (21-11/32) Dimension Unit Width (ID / OD) mm (inch) 870 (34-9/32) / 780 (30-23/32) Depth (ID / OD) mm (inch) 229 (9-1/32) / 289 (11-13/32) Weight Net (I/D / O/D) kg (lb)
  • Page 22 Indoor CS-Z42XKEW Model Outdoor CU-Z42XKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. 0.85 4.20 5.00 Capacity BTU/h 2900 14300 17100 kcal/h 3610 4300 Running Current 5.50 Input Power 1.24k 1.57k Annual Consumption EER CLASS 3.62 3.39 3.18 BTU/hW...
  • Page 23 Indoor CS-Z42XKEW Model Outdoor CU-Z42XKE Type Hermetic Motor / Rotary Compressor Motor Type Brushless (6-poles) Output Power Type Cross-flow fan Material ASG30 Motor Type DC (8-pole) Input Power 47.1 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1030 Heat 1090 Cool...
  • Page 24 Indoor CS-Z42XKEW Model Outdoor CU-Z42XKE Height (ID / OD) mm (inch) 295 (11-5/8) / 542 (21-11/32) Dimension Unit Width (ID / OD) mm (inch) 870 (34-9/32) / 780 (30-23/32) Depth (ID / OD) mm (inch) 229 (9-1/32) / 289 (11-13/32) Weight Net (I/D / O/D) kg (lb)
  • Page 25 CU-2Z41TBE CU-2Z50TBE CU-3Z68TBE CU-3Z52TBE ROOM TYPE 1.6kW CS-MZ16XKEW ● ● ● ● ● ● ● ● ● ● ● ● CS-Z20XKEW 2.0kW ● ● ● ● ● ● ● ● ● ● ● ● CS-XZ20XKEW CS-Z25XKEW 2.5kW ● ● ●...
  • Page 26 CU-4Z68TBE CU-4Z80TBE CU-5Z90TBE ROOM TYPE 1.6kW CS-MZ16XKEW ● ● ● ● ● ● ● ● ● ● ● ● ● CS-Z20XKEW 2.0kW ● ● ● ● ● ● ● ● ● ● ● ● ● CS-XZ20XKEW CS-Z25XKEW 2.5kW ● ●...

  • Page 27: 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 during single split connection only ...

  • Page 28: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Aluminium fin Front panel Auto OFF/ON button Use when remote control is misplaced or a malfunction occurs. Indicator Air Filters Horizontal airflow direction louver Do not adjust by hand. Vertical airflow direction louver Do not adjust by hand.

  • Page 29: Dimensions

    6. Dimensions Indoor Unit <Top View> <Side View> <Front View> <Side View> Air intake direction Air outlet Left piping Right piping direction hole hole <Bottom View> <Remote Control> <Rear View> Liquid side Gas side <Remote Control Holder> 41-61 63.37 Relative position between the indoor unit and the installation plate <Front View> 633.4 12.1 Installation...

  • Page 30: Outdoor Unit

    Outdoor Unit <Top View> Space necessary for installation 67.6 (104.7) 104.9 60.5 100 mm 100 mm 1000 mm 2-way valve at Liquid side Anchor Bolt Pitch (High Pressure) × 3-way valve at Gas side (Low Pressure) <Side View> <Side View> <Front View>...

  • Page 31: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram INDOOR OUTDOOR LIQUID EXPANSION TEMP. SIDE VALVE MUFFLER STRAINER SENSOR 2-WAY VALVE PIPE TEMP. INTAKE SENSOR 2 TEMP. SENSOR CONDENSER PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) SIDE MUFFLER 4-WAYS VALVE 3-WAY VALVE MUFFLER MUFFLER (FOR Z20/25XK ONLY)

  • Page 32: Block Diagram

    8. Block Diagram CS-Z20XKEW CU-Z20XKE CS-Z25XKEW CU-Z25XKE CS-XZ20XKEW CU-Z20XKE CS-XZ25XKEW CU-Z25XKE...

  • Page 33: Cs-Z35Xkew Cu-Z35Xke Cs-Z42Xkew Cu-Z42Xke Cs-Xz35Xkew Cu-Z35Xke

    CS-Z35XKEW CU-Z35XKE CS-Z42XKEW CU-Z42XKE CS-XZ35XKEW CU-Z35XKE...

  • Page 34: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit...

  • Page 35: Outdoor Unit

    Outdoor Unit 9.2.1 CU-Z20XKE CU-Z25XKE YELLOW (YEL) TO INDOOR UNIT BLUE(BLU) RED (RED) REACTOR (TRADEMARK) TERMINAL BOARD COMPRESSOR TERMINAL THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER FUSE105 RAT2 RAT1 DATA (15A 250V) (GRY) (GRY) ( RED ) OUTDOOR AIR TEMP. SENSOR (THERMISTOR) NOISE FILTER...
  • Page 36 9.2.2 CU-Z35XKE CU-Z42XKE 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 37: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit ELECTRONIC CONTROLLER (WIFI MODULE) TERMINAL CN-WLAN BOARD (BLK) GR GR GR TEMP. FUSE 102°C CN-WLAN (WHT) *C401 RY-PWR AC308 (BLK) *R406 *R405 NONE RY-PWR2 AC307 (BRW) *C402 *C403 12V_1 NONE NONE FUSE301 *F301 AC303 (WHT) T3.15A L250V AC304 (RED)

  • Page 38: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 CU-Z20XKE CU-Z25XKE TO INDOOR UNIT REACTOR TERMINAL BOARD FUSE105 RAT2 RAT1 DATA (15A 250V) (GRY) (GRY) OUTDOOR AIR TEMP. CN –TH ( RED ) SENSOR R206 R205 (WHT) (THERMISTOR) 15.8k t° NOISE FILTER COMMUNICATION CIRCUIT t° CIRCUIT AC-BLK PIPING TEMP.
  • Page 39 10.2.2 CU-Z35XKE CU-Z42XKE TO INDOOR UNIT REACTOR TERMINAL BOARD RAT2 RAT1 DATA (GRY) (GRY) (RED) 15.8k COMMUNICATION 470u CIRCUIT NOISE FILTER FUSE 5 CIRCUIT AC-BLK (20A 250V) (BLK) CN–TH1 (WHT) FUSE 6 FUSE 8 FUSE 1 OUTDOOR AIR TEMP. SENSOR (THERMISTOR) (20A 250V) T3.15A (20A 250V)

  • Page 40: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC304 AC303 G301 AC308 AC307 CN-FM CN-NANO CN-CNT CN-WLAN CN-STM2 CN-STM1 CN-DISP CN-RMT CN-STM3 CN-TH JP1 (Random Auto Restart enable/disable)
  • Page 41 11.1.2 Indicator Printed Circuit Board LED201 LED202 LED203 LED204 LED205 LED206 CN-DISP 11.1.3 nanoeX 11.1.4 Wireless LAN Module Printed Circuit Board (Network Adapter)

  • Page 42: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board 11.2.1.1 CU-Z20XKE CU-Z25XKE POWER TRANSISTOR (IPM) CN-MTR2 CN-HOT CN-TH CN-TANK CN-STM AC-WHT DATA AC-BLK...
  • Page 43 11.2.1.2 CU-Z35XKE CU-Z42XKE POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...

  • Page 44: Installation Instruction

    12. Installation Instruction 12.1 Select the Best Location 12.1.1 Indoor Unit 12.1.2 Indoor/Outdoor Unit Installation Diagram  Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  There should not be any heat source or steam Piping direction Attention not to bend up drain hose...

  • Page 45: 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 More than More than Wall Wall More than Indoor unit screw 150 mm 216 mm 247 mm 150 mm 150 mm TO HOLE...
  • Page 46 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 47 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 48 Change the drain hose position Rear view for left piping installation 150 mm TO HOLE CENTER Connection cable PIPE HOLE CENTER Piping More than 950 mm (3/4 ~ 1.75HP) or Drain hose Sleeve for More than 1150 mm Connection cable piping hole (2.0 ~ 2.5HP) Drain hose...
  • Page 49 Tape Tape Power supply cord Connection cable Terminals on the outdoor unit WARNING Colour of wires (connection cable) Recommended Terminals on the indoor unit This equipment length (mm) must be properly Connection for multi inverter (Power supply cord) refer table below earthed.
  • Page 50 12.2.4.1 Wire Stripping Connecting and Requirement Wire stripping Indoor/outdoor connection terminal board No loose 5 mm or more strand when (gap between wires) inserted Conductor not Conductor Conductor fully inserted fully inserted over inserted PROHIBITED PROHIBITED ACCEPT RISK OF FIRE JOINING OF WIRES MAY CAUSE WARNING...
  • Page 51 12.2.5 Connect the Piping 12.2.5.1 Connecting the Piping to Indoor For connection joint of all model Additional Precautions For R32 Models when Please make flare after inserting flare nut (locate at connecting by flaring at indoor side joint portion of tube assembly) onto the copper pipe. (In case of using long piping) Ensure to do the re-flaring of pipes before connecting to units to avoid leaking.
  • Page 52 12.2.5.3 Connecting the Piping to Outdoor Multi Decide piping length and then cut by using pipe cutter. Liquid side Remove burrs from cut edge. Make flare after Hall Union Flare Nut inserting the flare nut (locate at valve) onto the copper Auxiliary pipe Connection pipe pipe.
  • Page 53 Model Z50***, Z71***, XZ50*** Pull down 3 caps at the bottom, then remove LOCK 3 mounting screws. UNLOCK Lock knob Open front panel. Cap and Screw Front panel (3 location) Remove 3 mounting screws on the front grille. Slide the 4 lock knobs on the upside of front grille to unlock position Front grille Pull the front grille towards you to remove the...
  • Page 54 12.2.9 How to Replace Network Adapter  Remove the front grille (refer how to take out front grille) from the unit.  Remove the indicator piece by releasing the hook.  Remove 1 mounting screw, then remove the network adaptor holder. ...

  • Page 55: Select The Best Location

    12.3 Select the Best Location 12.3.1 Outdoor Unit  If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed. Connection cable ( )  There should not be any animal or plant which 1/4"...

  • Page 56: Outdoor Unit

    12.4 Outdoor Unit 12.4.1 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). Make sure unit install in balance level to ensure that water flow out from unit drainage hole. When installing at roof, please consider strong wind and earthquake.
  • Page 57 AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.4.3 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 58 12.4.4 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 x 1.5 mm (3/4 ~ 1.75HP) or 4 x 2.5 mm (2.0 ~ 2.5HP) flexible cord, type designation 60245 IEC 57 or heavier cord.
  • Page 59 12.4.8 Proper Pump Down Method Operate air After 10 ~ 15 minutes of pre Take out air Install New conditioner at operation, close 2 way valve. conditioner unit. Refrigerant air conditioner. cooling mode for After 3 minutes, close 3 way 10 ~ 15 minutes.

  • Page 60: 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 61 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 62: 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 63 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 64 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 65 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 66: 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 67: 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 68: 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 69 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 70 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 71 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 72: 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 73 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 74 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 75 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 76 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 77 (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 78: 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 79 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 80: 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 81: 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 82: Outdoor Fan Motor Operation

    ii Auto Fan Speed [Cooling, Dry]  According to room temperature and setting temperature, indoor fan speed is determined automatically.  When set temperature is not achieved, the indoor fan will operate according to pattern below.  When set temperature achieved, the indoor fan speed will be fixed. When thermostat off, the fan stop periodically. [Heating] ...

  • Page 83: Airflow Direction

     During cooling operation, and outdoor ambient temperature is below 8°C, outdoor fan speed will be controlled according to outdoor piping temperature as following: OD Pipe Temperature 26°C 33°C  During above condition, when indoor heat exchanger temperature is below 5°C, the outdoor fan will stop according to outdoor piping temperature as following: 14.4 Airflow Direction ...
  • Page 84 Z50/71XKEW & XZ50XKEW Inner Vane Angle (°) Outer Vane Angle (°) Operation Airflow Direction Mode Not yet achieve set 13 ~ 52 6 ~ 34 temperature Auto Achieve set temperature Cooling/Dry Auto Swing 13 ~ 52 6 ~ 34 Manual Manual Heating Auto...
  • Page 85 For Z50/71XKEW Closed position Closed position Reference datum Reference datum (Horizontal) (Horizontal) β° Step 1 Step 1 Step 2 Step 2 Step 3 Step 3 Step 4 Reset position Step 4 Reset position Step 5 Step 5 * The horizontal vane angle tolerance is within +/- 5 degree. 14.4.2 Horizontal Airflow ...

  • Page 86: 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 “FAN SPEED/QUIET” button at remote control is pressed continuously until QUIET will be shown on remote control display.

  • Page 87: Powerful Mode Operation

    14.7 Powerful Mode Operation  When the powerful mode is selected, the internal setting temperature will shift lower up to 2.0°C (for Cooling/Soft Dry) or higher up to 3.5°C (for Heating) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.

  • Page 88: Auto Restart Control

    Control pattern:  Cooling mode Sleep Function activated Unit Off Normal Setting +1°C Temperature +1°C -2°C +1°C minutes minutes minutes minutes minutes minutes Setting Set Speed Set Speed Set Speed Set Speed Set Speed Fan Speed 0.5 hr 1.0 hr 2.0 hr Selection of OFF Timer...

  • Page 89: Indication Panel

    14.11 Indication Panel POWER TIMER nanoe X Color White White White White Wireless LAN Mode Light ON Operation ON Timer Setting ON nanoe ON Wireless LAN Mode Light OFF Operation OFF Timer Setting OFF nanoe OFF Note:  If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation mode judgment, or ON timer sampling.
  • Page 90  Power failure During nanoe X individual operation, if power failure occurs, after power resumes, nanoe X individual operation resumes immediately. During combination operation, if power failure occurs, after power resumes, combination operation resume immediately.  nanoe X check mode To enable nanoe X check mode, during nanoe X operation ON:...

  • Page 91: Mild Dry Cooling Operation

    However, there is no guarantee that the APP will work well with all Android OS version.  The Network Adaptor is designed specifically as a terminal for Panasonic Comfort Cloud app.  The Wireless LAN network coverage must reach the air conditioner installation location.
  • Page 92  Google Play  Open Open App Store   Search for Panasonic Comfort Cloud app. Search for Panasonic Comfort Cloud app.   Download and install. Download and install. Note  The app user interface image may change for version upgrade without notification.
  • Page 93  Failure communication parameter setting. H85 communication error: time/retry counter 10 min/3 count Wireless LAN disconnection judgment time 300 sec 14.14.8 Between ID AC and Broadband Router Failure Detect Condition  Detect condition: Communication with router is interrupted.  Confirm condition: The interrupted condition continue more than 5 minutes and retry is implemented. ...

  • Page 94: Operation Control (For Multi Split Connection)

    15. Operation Control (For Multi Split Connection) During multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter. 15.1 Cooling operation 15.1.1 Thermostat control  Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature <...

  • Page 95: Automatic Operation

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

  • Page 96: Protection Control

    16. Protection Control 16.1 Protection Control for All Operations 16.1.1 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 97 Compressor = OFF 103°C 88°C Compressor Frequency Reduce 99°C 87°C Compressor Frequency Maintain 96°C 86°C Free Comp. temperature 16.1.5 Low Pressure Prevention Control (Gas Leakage Detection)  Control start conditions For 5 minutes, the compressor continuously operates and outdoor total current is between 0.36A and 0.54A (Z35/42/50/71XKEW), between 0.29A and 0.44A (Z20/25XKEW).

  • Page 98: Protection Control For Cooling & Soft Dry Operation

    16.2 Protection Control for Cooling & Soft Dry Operation 16.2.1 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 99: Protection Control For Heating Operation

    16.2.5 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 100 16.3.4 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. 16.3.5 Cold Draught Prevention Control  When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced. 16.3.6 Deice Operation ...

  • Page 101: Servicing Mode

    17. Servicing Mode 17.1 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 102: 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 103 17.2.2 Operation mode during Heating Only Operation  The table below shows the operation mode comparison when Heating Only Operation Mode Activated and Deactivated. Operation Heating Only Operation Mode Activated Heating Only Operation Mode Deactivated Mode After 30s sampling, the unit will judge the operation After 30s sampling, regardless of the indoor intake or mode base on remote controller temperature setting and AUTO...

  • Page 104: Remote Control Button

    17.3 Remote Control Button 17.3.1 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 105  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 106 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 & Press SW’s to choose function 5 i) Display latest set temp (Low1).
  • Page 107 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 108 17.3.2 RESET (RC)  To clear and restore the remote control setting to factory default. Press once to clear the memory 17.3.3 RESET (AC)  To restore the unit’s setting to factory default. Press once to restore the unit’s setting. 17.3.4 TIMER ...
  • Page 109 17.3.6 Customization mode LCD display area: Customization display area (highlighted in color) 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 [range (1~49)]...
  • Page 110 Function & Options list: 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 111 Customization Options Remark Name 01 – Pattern 1 Compressor frequency change speed selection 02 – Pattern 2 03 – Pattern 3 00 – Disable Up/Down air swing upper limit restriction selection 01 – Enable Failure diagnosis mode disable None (No display) Service Zone 01 –...

  • Page 112: Troubleshooting Guide

    18. Troubleshooting Guide 18.1 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 113 18.1.1 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 114: Breakdown Self Diagnosis Function

    18.2 Breakdown Self Diagnosis Function 18.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  Once abnormality has occurred during operation, the unit will stop its operation, and Timer LED blinks.  Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will light up again.

  • Page 115: Error Codes Table

    18.3 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 116 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 117: Self-Diagnosis Method

    18.4 Self-diagnosis Method 18.4.1 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 118 18.4.2 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 119 18.4.3 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 120 18.4.4 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 121 18.4.5 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 122 18.4.6 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 123 18.4.7 H23 (Indoor Pipe Temperature Sensor 1 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 124 18.4.8 H24 (Indoor Pipe Temperature Sensor 2 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 125 18.4.9 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 126 18.4.10 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 127 18.4.11 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 128 18.4.12 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 129 18.4.13 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 130 18.4.14 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 131 18.4.15 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 132 18.4.16 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 133 18.4.17 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 134 18.4.18 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 135 18.4.19 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 136 18.4.20 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 137 18.4.21 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 138 18.4.22 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 139 18.4.23 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 140 18.4.24 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 141 18.4.25 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 142 18.4.26 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 143 18.4.27 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 144 18.4.28 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 145 18.4.29 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 146: Disassembly And Assembly Instructions

    19. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 19.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 19.1.1...
  • Page 147 Open the hooks on top of the Front Grille. Figure 4 Remove the Front Grille. Figure 5 19.1.2 To Remove Electronic Controller Remove the right side front cover first, then remove the second front cover. Figure 6...
  • Page 148 Remove the particular piece. Figure 7 Pull out the Main Electronic Controller halfway. Then disconnect all connectors from the controller. Remove the Electronic controller. Disconnect lead wire from the terminal board. Disconnect CN-DISP connector from indicator complete. Figure 8...
  • Page 149 19.1.3 To Remove Discharge Grille Disconnect CN-STM1, CN-STM2 and CN-STM3 from electronic controller. Remove indicator complete. Figure 9 Remove drain hose. Figure 10 Pull out the discharge grille to remove. Figure 11...
  • Page 150 19.1.4 To Remove Cross Flow Fan Loosen the cross-flow fan screw. Figure 12 Remove 2 screws from Evaporator. Figure 13 Lift up the Evaporator. Pull out cross-flow fan. Figure 14...
  • Page 151 19.1.5 To Remove Fan Motor Remove air temperature and pipe temperature sensor. Disconnect CN-FM from electronic controller. Remove earth wire from evaporator. Figure 15 Remove 1 screw from control board complete. Then pull out the control board complete. Figure 16 Remove 4 screws from fan motor cover.
  • Page 152 Remove 1 mounting screw, then remove the network adaptor holder. After that, network adaptor can be easily replaced. Indicator piece Network adaptor holder Hook Screw Reminder: Serviceman or owner must setting again Panasonic Comfort Cloud app after replace Wireless LAN Module.

  • Page 153: Outdoor Electronic Controller Removal Procedure

    19.2 Outdoor Electronic Controller Removal Procedure Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Release 3 Terminal Connectors, L, N Screws and Earth Wire Screw. Top Panel Control Board Then Remove 4 Terminal Remove of Screw Screws Connectors of DRM.

  • Page 154: Panasonic Comfort Cloud

    Password Password Remember me Forgot ID/Password Create new Panasonic ID View an example Login 19.3.2 App Setting Add new air conditioner • Before using the “Panasonic Comfort Cloud” app, you need to register this product. My Home Commercial air conditioner...
  • Page 155 Setting connection network Check that the Wireless LAN LED is ON. Point the remote control to the air conditioner and press the Wireless LAN button until the Wireless LAN LED starts blinking. Fast blink The unit is establishing the connection. Connection Guide Step 1 Step 1...
  • Page 156 Connection network using WPS mode (method 1) Press the WPS button on the router that Check that the Wireless LAN LED is ON. will be connected to the air conditioner. Press the Wireless LAN button for 5 • Check that the Wireless LAN LED is ON. seconds until “1”...
  • Page 157 5 seconds until “1” appears on the remote control. Press until “2” appears. Point the remote control to the air conditioner and press Join to connect to the “Panasonic-CS-wirelessAP” network. Connection Guide Connection Guide Connection Guide Connection Guide...
  • Page 158 When the air conditioner is connected to the router successfully, the Wireless LAN LED stops blinking and turns ON. When the Wireless LAN LED is ON, connect your smartphone to the wireless router to continue the setup. • If the Wireless LAN LED keeps blinking, check the wireless router connection. Connection Guide Connection Guide Connection Guide...
  • Page 159 Set a password to complete the registration. The password must be 8-15 characters with letters and numbers. Note • Keep the password for future use. You can use the same password when you register other Panasonic devices. Device password settings Step 1 Step 3...
  • Page 160 • After registering your preferred name statistic’s graph. for your air conditioner, you can use the “Panasonic Comfort Cloud” app functions. New air conditioner settings My Home Step 1...
  • Page 161 19.3.3 Launch the App Log in to the “Panasonic Comfort Cloud” Select your air conditioner to control. app. Main menu Login Group My Home Please enter your Panasonic ID and password. 0˚ 0˚ Device Panasonic ID Panasonic ID Panasonic ID...
  • Page 162 Information User approval Information User approval My Home Users awaiting your approval Living Room Please register me as user User A Please register me as user User’s control right Approval note Error messages Air conditioner name My Home Air conditioner’s Master Bedroom H14 Indoor intake air temperature Do not approve...
  • Page 163 Advanced settings Operating mode My Home My H y ome Advanced settings Setting the fan speed My Home Master Bedroom 14.Feb 15:01 14.Feb 15:01 Fan speed Operating mode selection Mode Cool Cool ( Subject to model Cool compatibility) Auto iAUTO-X Air swing Air swing (Up-Down)
  • Page 164 Weekly Timer Tap “Weekly timer” to set the timer schedule. My Home Weekly timer My Home Living Room Air conditioner name Edit ON/OFF 16.May 15:50 Living Room Cool Statistics Weekly timer Quiet Powerful All OFF All ON to add a new program.
  • Page 165 List of devices List of groups Change the language of the app User’s manual Terms of use Copyright Log out from current Panasonic ID User List Change the Device Password User list Changing device password Edit the name of the user Make sure the device is correct and enter old password and new password.
  • Page 166 Replace the Device Change the Router Settings Select “Replace device” from the menu. Select “Change router settings” from the menu. Change router settings Replace device My Home My Home Living Room Living Room Device ID Device ID C123456789 C123456789 Set up the wireless network again when you Replace the network adaptor.

  • Page 167: Technical Data

    20.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 20.1.1 CS-Z20XKEW/CU-Z20XKE CS-XZ20XKEW/CU-Z20XKE Indoor (°C) Outdoor DB (°C) 19.0 2355 2224 368 2489 2148 422 2329 2306 382 2281 2237 396 2445 2275 243 2274 2110 340 2050 2030 450 22.0 2589 1718 373 2590 1701 372 2688 1743 361 2548 1697 425 2715 1744 223 2484 1642 332 2377 1633 446...
  • Page 168 20.1.4 CS-Z42XKEW/CU-Z42XKE Indoor (°C) Outdoor DB (°C) 19.0 4826 4007 980 5216 3862 883 5175 3923 948 4885 3865 852 5211 4012 692 5064 3989 934 4200 3533 1240 22.0 5742 2789 820 5326 2854 981 5701 3030 804 5459 2963 909 5858 3097 657 5528 2940 929 4896 2751 1208 15.7 4655 3824 995 4306 3744 986 4498 3740 907 4437 3705 923 4771 3908 723 4484 3795 953 4029 3557 1203 18.4 4682 2849 994 4725 2848 971 4872 2891 962 4842 2920 964 5379 3021 705 4943 2932 941 4281 2662 1202 13.3 3822 3479 874 3901 3519 1035 3978 3505 1035 4274 3684 895 4486 3750 739 4096 3599 952 3706 3426 1202...

  • Page 169: Heat Mode Performance Data

    20.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C Voltage: 230V 20.2.1 CS-Z20XKEW/CU-Z20XKE CS-XZ20XKEW/CU-Z20XKE Indoor (°C) Outdoor WB (°C) 1884 2341 2777 2695 2983 1851 2380 2900 2800 3188 1856 2423 3052 2887 3211 20.2.2...
  • Page 170 20.2.6 CS-Z71XKEW/CU-Z71XKE Indoor (°C) Outdoor WB (°C) 4538 2049 5721 2505 7114 2532 8068 2349 8298 2338 4690 1974 6310 2500 7390 2520 8600 2350 8977 2338 5067 1869 6526 2495 7933 2140 8471 2337 9601 2348 TC - Total Cooling Capacity (W) SHC - Sensible Heat Capacity (W) - Input Power (W)

  • Page 171: Service Data

    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 21.1.1 CS-Z20XKEW CU-Z20XKE CS-XZ20XKEW CU-Z20XKE 21.00 20.00 19.00 18.00 17.00 16.00...
  • Page 172 21.1.2 CS-Z25XKEW CU-Z25XKE CS-XZ25XKEW CU-Z25XKE 21.00 20.00 19.00 18.00 17.00 16.00 15.00 14.00 13.00 Outdoor Air Temperature (°C) 3.50 3.00 2.50 2.00 1.50 1.00 0.50 Outdoor Air Temperature (°C) 1.40 1.35 1.30 1.25 1.20 1.15 1.10 1.05 1.00 0.95 0.90 Outdoor Air Temperature (°C)
  • Page 173 21.1.3 CS-Z35XKEW CU-Z35XKE CS-XZ35XKEW CU-Z35XKE 16.00 15.50 15.00 14.50 14.00 13.50 13.00 12.50 12.00 Outdoor Air Temperature (°C) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 1.50 Outdoor Air Temperature (°C) 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 Outdoor Air Temperature (°C)
  • Page 174 21.1.4 CS-Z42XKEW CU-Z42XKE 15.00 14.50 14.00 13.50 13.00 12.50 Outdoor Air Temperature (°C) 7.00 6.50 6.00 5.50 5.00 4.50 4.00 3.50 3.00 2.50 Outdoor Air Temperature (°C) 1.12 1.08 1.04 1.00 0.96 0.92 0.88 0.84 0.80 Outdoor Air Temperature (°C)
  • Page 175 21.1.5 CS-Z50XKEW CU-Z50XKE CS-XZ50XKEW CU-Z50XKE 18.0 17.0 16.0 15.0 14.0 13.0 12.0 Outdoor Air Temperature (°C) 8.00 7.00 6.00 5.00 4.00 3.00 2.00 Outdoor Air Temperature (°C) 1.10 1.00 0.90 Outdoor Air Temperature (°C)
  • Page 176 21.1.6 CS-Z71XKEW CU-Z71XKE 16.0 15.0 14.0 13.0 12.0 Outdoor Air Temperature (°C) 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 Outdoor Air Temperature (°C) 1.10 1.00 0.90 Outdoor Air Temperature (°C)

  • Page 177: 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 21.2.1 CS-Z20XKEW CU-Z20XKE CS-XZ20XKEW CU-Z20XKE Outdoor Air Temperature (°C) 4.00 3.50 3.00 2.50 2.00...
  • Page 178 21.2.2 CS-Z25XKEW CU-Z25XKE CS-XZ25XKEW CU-Z25XKE Outdoor Air Temperature (°C) 4.00 3.50 3.00 2.50 2.00 1.50 1.00 Outdoor Air Temperature (°C) 3.00 2.50 2.00 1.50 1.00 0.50 Outdoor Air Temperature (°C)
  • Page 179 21.2.3 CS-Z35XKEW CU-Z35XKE CS-XZ35XKEW CU-Z35XKE Outdoor Air Temperature (°C) 4.50 4.00 3.50 3.00 2.50 Outdoor Air Temperature (°C) 2.80 2.60 2.40 2.20 2.00 1.80 1.60 1.40 1.20 Outdoor Air Temperature (°C)
  • Page 180 21.2.4 CS-Z42XKEW CU-Z42XKE Outdoor Air Temperature (°C) 7.00 6.50 6.00 5.50 5.00 4.50 4.00 Outdoor Air Temperature (°C) 3.40 3.20 3.00 2.80 2.60 2.40 2.20 2.00 1.80 1.60 Outdoor Air Temperature (°C)
  • Page 181 21.2.5 CS-Z50XKEW CU-Z50XKE CS-XZ50XKEW CU-Z50XKE 55.00 50.00 45.00 40.00 35.00 30.00 25.00 -16 -14 -12 -10 Outdoor Air Temperature (°C) 10.00 9.00 8.00 7.00 6.00 5.00 4.00 3.00 -16 -14 -12 -10 Outdoor Air Temperature (°C) 4.50 4.00 3.50 3.00 2.50 2.00 1.50...
  • Page 182 21.2.6 CS-Z71XKEW CU-Z71XKE 65.00 60.00 55.00 50.00 45.00 40.00 35.00 30.00 25.00 -16 -14 -12 -10 Outdoor Air Temperature (°C) 15.00 14.00 13.00 12.00 11.00 10.00 9.00 8.00 7.00 6.00 -16 -14 -12 -10 Outdoor Air Temperature (°C) 4.50 4.00 3.50 3.00 2.50...

  • Page 183: Piping Length Correction Factor

    21.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 21.3.1 CS-Z20XKEW CU-Z20XKE CS-Z25XKEW CU-Z25XKE CS-Z35XKEW CU-Z35XKE CS-Z42XKEW CU-Z42XKE CS-XZ20XKEW CU-Z20XKE CS-XZ25XKEW CU-Z25XKE CS-XZ35XKEW CU-Z35XKE Cooling Capacity 1.02 1.0119 1.00 1.0000...
  • Page 184 21.3.2 CS-Z50XKEW CU-Z50XKE CS-Z71XKEW CU-Z71XKE CS-XZ50XKEW CU-Z50XKE Cooling Capacity 1.03 1.0159 1.01 1.0000 0.9889 0.99 0.9800 0.97 0.9746 0.951634 0.95 10 12 14 16 18 20 22 24 26 28 30 32 Pipe Length (m) 1.01 Heating Capacity 1.01 1.0056 1.00 1.0000 1.00...
  • Page 185 22. Exploded View and Replacement Parts List 22.1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 186 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z20XKEW CS-Z25XKEW REMARK CHASSIS COMPLETE ACXD50C04160 ← FAN MOTOR L6CBYYYL0306 ← FAN MOTOR BRACKET ACXD54-04360 ← CROSS-FLOW FAN COMPLETE ACXH02C01330 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C32540 ←...
  • Page 187 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z20XKEW CS-Z25XKEW REMARK INSTALLATION INSTRUCTION ACXF60-42511 ← INSTALLATION INSTRUCTION ACXF60-42521 ← INSTALLATION INSTRUCTION ACXF60-42531 ← INSTALLATION INSTRUCTION ACXF60-42541 ← INSTALLATION INSTRUCTION ACXF60-42551 ← INSTALLATION INSTRUCTION ACXF60-42561 ← INSTALLATION INSTRUCTION ACXF60-42571 ← INSTALLATION INSTRUCTION ACXF60-42581 ←...
  • Page 188 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z35XKEW CS-Z42XKEW REMARK CHASSIS COMPLETE ACXD50C04160 ← FAN MOTOR L6CBYYYL0306 ← FAN MOTOR BRACKET ACXD54-04360 ← CROSS-FLOW FAN COMPLETE ACXH02C01330 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C32570 ACXB30C32550 FLARE NUT (LIQUID)
  • Page 189 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z35XKEW CS-Z42XKEW REMARK INSTALLATION INSTRUCTION ACXF60-42511 ← INSTALLATION INSTRUCTION ACXF60-42521 ← INSTALLATION INSTRUCTION ACXF60-42531 ← INSTALLATION INSTRUCTION ACXF60-42541 ← INSTALLATION INSTRUCTION ACXF60-42551 ← INSTALLATION INSTRUCTION ACXF60-42561 ← INSTALLATION INSTRUCTION ACXF60-42571 ← INSTALLATION INSTRUCTION ACXF60-42581 ←...
  • Page 190 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XZ20XKEW CS-XZ25XKEW REMARK CHASSIS COMPLETE ACXD50C04190 ← FAN MOTOR L6CBYYYL0306 ← FAN MOTOR BRACKET ACXD54-04360 ← CROSS-FLOW FAN COMPLETE ACXH02C01330 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C32540 ←...
  • Page 191 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XZ20XKEW CS-XZ25XKEW REMARK INSTALLATION INSTRUCTION ACXF60-42511 ← INSTALLATION INSTRUCTION ACXF60-42521 ← INSTALLATION INSTRUCTION ACXF60-42531 ← INSTALLATION INSTRUCTION ACXF60-42541 ← INSTALLATION INSTRUCTION ACXF60-42551 ← INSTALLATION INSTRUCTION ACXF60-42561 ← INSTALLATION INSTRUCTION ACXF60-42571 ← INSTALLATION INSTRUCTION ACXF60-42581 ←...
  • Page 192 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XZ35XKEW REMARK CHASSIS COMPLETE ACXD50C04190 FAN MOTOR L6CBYYYL0306 FAN MOTOR BRACKET ACXD54-04360 CROSS-FLOW FAN COMPLETE ACXH02C01330 BEARING ASSY CWH64K1010 SCREW - CROSS-FLOW FAN CWH551146 EVAPORATOR ACXB30C32570 FLARE NUT (LIQUID) CWT251048 FLARE NUT (GAS) CWT251049 CONTROL BOARD CASING ACXH10-08620...
  • Page 193 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XZ35XKEW REMARK INSTALLATION INSTRUCTION ACXF60-42511 INSTALLATION INSTRUCTION ACXF60-42521 INSTALLATION INSTRUCTION ACXF60-42531 INSTALLATION INSTRUCTION ACXF60-42541 INSTALLATION INSTRUCTION ACXF60-42551 INSTALLATION INSTRUCTION ACXF60-42561 INSTALLATION INSTRUCTION ACXF60-42571 INSTALLATION INSTRUCTION ACXF60-42581 INSTALLATION INSTRUCTION ACXF60-42591 INSTALLATION INSTRUCTION ACXF60-42601 CWG861497 SHOCK ABSORBER- LEFT ACXG70-12960...
  • Page 194 22.2 Outdoor Unit 65955 F85- 6277 F85- 65957 6279 F85- 65955 6277 65957 F85- 6279 65956 F85- 6278 65958 F85- 6280 65956 F85- 6278 F85- 65958 6280 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 195 CONTROL BOARD COVER CO. CWH13C1359 ← STRAINER CWB11094 ← EXPANSION VALVE ACXB05-01080 ← WIRE NET ACXD04-00040A ← BAG-COMPLETE CWG87C900 ← PANASONIC BADGE CWE373439 ← INSTALLATION INSTRUCTION ACXF60-42621 ← INSTALLATION INSTRUCTION ACXF60-42631 ← INSTALLATION INSTRUCTION ACXF60-42641 ← INSTALLATION INSTRUCTION ACXF60-42651 ←...
  • Page 196 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z20XKE CU-Z25XKE REMARK INSTALLATION INSTRUCTION ACXF60-42681 ← INSTALLATION INSTRUCTION ACXF60-42691 ← INSTALLATION INSTRUCTION ACXF60-42701 ← INSTALLATION INSTRUCTION ACXF60-42711 ← INSTALLATION INSTRUCTION ACXF60-42721 ← CWG861078 ← BASE BOARD-COMPLETE CWG62C1223 ← SHOCK ABSORBER - RIGHT CWG713778 ←...
  • Page 197 PLATE - C. B. COVER TERMINAL CWH131301 ← CONTROL BOARD COVER CO. CWH13C1359 ← STRAINER CWB11094 ← EXPANSION VALVE ACXB05-01080 ← WIRE NET ACXD04-00040A ← BAG-COMPLETE CWG87C900 ← PANASONIC BADGE CWE373439 ← INSTALLATION INSTRUCTION ACXF60-42621 ← INSTALLATION INSTRUCTION ACXF60-42631 ← INSTALLATION INSTRUCTION ACXF60-42641 ←...
  • Page 198 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z35XKE CU-Z42XKE REMARK INSTALLATION INSTRUCTION ACXF60-42651 ← INSTALLATION INSTRUCTION ACXF60-42661 ← INSTALLATION INSTRUCTION ACXF60-42671 ← INSTALLATION INSTRUCTION ACXF60-42681 ← INSTALLATION INSTRUCTION ACXF60-42691 ← INSTALLATION INSTRUCTION ACXF60-42701 ← INSTALLATION INSTRUCTION ACXF60-42711 ← INSTALLATION INSTRUCTION ACXF60-42721 ←...

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