Panasonic CS-Z50XKEW Service Manual
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Panasonic CS-Z50XKEW Service Manual

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Please file and use this manual together with the service manual for Model No. CS-Z20XKEW, CU-Z20XKE, CS-Z25XKEW,
CU-Z25XKE, CS-Z35XKEW, CU-Z35XKE, CS-Z42XKEW, CU-Z42XKE, CS-XZ20XKEW, CS-XZ25XKEW, CS-XZ35XKEW,
Order No. PAPAMY2101002CE.
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
R32 REFRIGERANT
– This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation,
maintenance and/or service of this product.
CS-Z50XKEW
CS-Z71XKEW
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
CAUTION
Order No: PAPAMY2103012AE
Indoor Unit
© Panasonic Corporation 2021.
Outdoor Unit
CU-Z50XKE
CU-Z71XKE
Destination
Europe
Turkey
in the Schematic

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Summary of Contents for Panasonic CS-Z50XKEW

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

    6. Dimensions ............22 Indoor Unit ..........22 Outdoor Unit ..........23 7. Refrigeration Cycle Diagram ......24 CS-Z50XKEW CU-Z50XKE ...... 24 CS-Z71XKEW CU-Z71XKE ...... 25 8. Block Diagram ..........26 9. Wiring Connection Diagram ......27 Indoor Unit ..........27 Outdoor Unit ..........

  • Page 4: 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 5 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 6 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 7: 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 8 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 9 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 10 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 11 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 12: Specifications

    3. Specifications Indoor CS-Z50XKEW Model Outdoor CU-Z50XKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. 0.98 5.00 6.00 Capacity BTU/h 3340 17100 20500 kcal/h 4300 5160 Running Current 6.10 Input Power 1.36k 1.90k Annual Consumption EER CLASS 3.92...
  • Page 13 Indoor CS-Z50XKEW Model Outdoor CU-Z50XKE Type Hermetic Motor / Rotary Compressor Motor Type Brushless (6-pole) Output Power Type Cross-flow fan Material ASG30 Motor Type DC (8-pole) Input Power 74.0 Output Power Cool Heat Cool Heat Cool Speed Heat 1010 Cool...
  • Page 14 Indoor CS-Z50XKEW Model Outdoor CU-Z50XKE Height (ID / OD) mm (inch) 295 (11-5/8) / 695 (27-3/8) Dimension Unit Width (ID / OD) mm (inch) 1040 (40-31/32) / 875 (34-15/32) Depth (ID / OD) mm (inch) 244 (9-5/8) / 320 (12-5/8)
  • Page 15 Indoor CS-Z71XKEW Model Outdoor CU-Z71XKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. 0.98 7.10 8.50 Capacity BTU/h 3340 24200 29000 kcal/h 6110 7310 Running Current 10.00 Input Power 2.24k 3.00k Annual Consumption 1120 EER CLASS 2.33 3.17 2.83...
  • Page 16 Indoor CS-Z71XKEW Model Outdoor CU-Z71XKE Type Hermetic Motor / Rotary Compressor Motor Type Brushless (4-pole) Output Power 1.70k Type Cross-flow fan Material ASG30 Motor Type DC (8-pole) Input Power 80.2 Output Power Cool Heat Cool Heat Cool 1070 Speed Heat 1080 Cool 1200...
  • Page 17 Indoor CS-Z71XKEW Model Outdoor CU-Z71XKE Height (ID / OD) mm (inch) 295 (11-5/8) / 695 (27-3/8) Dimension Unit Width (ID / OD) mm (inch) 1040 (40-31/32) / 875 (34-15/32) Depth (ID / OD) mm (inch) 244 (9-5/8) / 320 (12-5/8) Weight Net (I/D / O/D) kg (lb)
  • Page 18 ● – CS-XZ35XKEW 4.2kW CS-Z42XKEW – – – – ● – ● ● – ● ● – CS-Z50XKEW 5.0kW – – – – ● – ● ● – ● – – CS-XZ50XKEW Capacity range of From 3.2kW to From 3.2kW to From 3.2kW to...
  • Page 19 ● ● ● ● CS-XZ35XKEW 4.2kW CS-Z42XKEW ● ● – – ● ● ● – ● ● ● ● – CS-Z50XKEW 5.0kW ● ● – – ● ● – – ● ● ● – – CS-XZ50XKEW 7.1kW CS-Z71XKEW – –...

  • Page 20: 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 30 meters during single split connection only ...

  • Page 21: 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 22: Dimensions

    6. Dimensions Indoor Unit <Top View> <Side View> <Front View> <Side View> Air intake 1040 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>...

  • Page 23: Outdoor Unit

    Outdoor Unit <Top View> Space necessary for installation (131) 34.7 100 mm 100 mm 1000 mm Anchor Bolt Pitch 360.5 × 613 2-way valve at Liquid side (High Pressure) 3-way valve at Gas side (Low Pressure) <Front View> <Side View> <Side View>...

  • Page 24: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram CS-Z50XKEW CU-Z50XKE INDOOR OUTDOOR LIQUID EXPANSION TEMP. SIDE STRAINER VALVE STRAINER SENSOR 2-WAY VALVE PIPE TEMP. PIPE SENSOR 2 TEMP. INTAKE SENSOR 2 TEMP. SENSOR CONDENSER PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR 1 HEAT EXCHANGER...

  • Page 25: Cs-Z71Xkew Cu-Z71Xke

    CS-Z71XKEW CU-Z71XKE INDOOR OUTDOOR LIQUID EXPANSION TEMP. SIDE RECEIVER VALVE STRAINER SENSOR 2-WAY VALVE PIPE TEMP. PIPE SENSOR 2 TEMP. INTAKE SENSOR 2 TEMP. SENSOR CONDENSER PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR 1 HEAT EXCHANGER (EVAPORATOR) SIDE DISCHARGE MUFFLER 4-WAYS VALVE 3-WAY VALVE...

  • Page 26: Block Diagram

    8. Block Diagram...

  • Page 27: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit...

  • Page 28: Outdoor Unit

    Outdoor Unit YELLOW TO INDOOR UNIT (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 GRY : GRAY DATA (GRY)

  • Page 29: 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 AC308 (BLK) RY-PWR *R406 *R405 NONE RY-PWR2 AC307 (BRW) *C402 *C403 12V_1 NONE NONE FUSE301 *F301 AC303 (WHT) T3.15A L250V AC304 (RED)

  • Page 30: Outdoor Unit

    10.2 Outdoor Unit 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, (25A 250V)

  • Page 31: 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 32 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 33: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board 11.2.1.1 CU-Z50XKE POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...
  • Page 34 11.2.1.2 CU-Z71XKE POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...

  • Page 35: Protection Control

    12. Protection Control 12.1 Protection Control for All Operations 12.1.1 Total Running Current When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased. If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.

  • Page 36: Disassembly And Assembly Instructions

    13. 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. 13.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 13.1.1...
  • Page 37 Remove front grille complete. Figure 4 13.1.2 To Remove Electronic Controller Remove control board front cover at the right side first then remove the second front cover. Figure 5 Remove lead wire from terminal board complete. Remove particular piece. Remove CN-DISP from indicator complete.
  • Page 38 Pull PCB half way then remove all connectors, CN-WHT from PCB. Then Remove main electronic controller. Then remove PCB. Figure 7 13.1.3 To Remove Discharge Grille Remove CN-STM 1, 2, 3 from main PCB. Remove indicator complete. Figure 8 Remove drain hose. Figure 9...
  • Page 39 Pull out the discharge grille to remove. Figure 10 13.1.4 To Remove Cross Flow Fan Loosen the cross-flow fan screw. Figure 11 Remove 2 screws from Evaporator. Figure 12...
  • Page 40 Lift up the Evaporator. Pull out cross-flow fan. Figure 13 13.1.5 To Remove Fan Motor Remove air temperature and pipe temperature sensor. Disconnect CN-FM from electronic controller. Remove earth wire from evaporator. Figure 14 Remove 1 screw from control board complete. Then pull out the control board complete.
  • Page 41 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 42: Outdoor Electronic Controller Removal Procedure

    13.2 Outdoor Electronic Controller Removal Procedure Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove 2 screws for the plate of Terminal Board Cover. Top Panel Screw Plate of Terminal Board Cover Screws...

  • Page 43: Technical Data

    14.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 14.1.1 CS-Z50XKEW CU-Z50XKE Indoor (°C) Outdoor DB (°C) 19.0 5646 4381 1001 5762 4386 901 5808 4435 916 5729 4423 891 5859 4449 841 5439 4240 1063 5000 4103 1360 22.0 6394 3577 882 6429 3571 824 6289 3541 948 6210 3462 939 6442 3546 803 5970 3351 1078 5501 3208 1377...

  • Page 44: Heat Mode Performance Data

    14.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C Voltage: 230V 14.2.1 CS-Z50XKEW CU-Z50XKE Indoor (°C) Outdoor WB (°C) 3995 1690 4352 1884 5583 2130 5441 1399 5597 1393 4129 1628 4800 1880...

  • Page 45: 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 15.1.1 CS-Z50XKEW CU-Z50XKE 18.0 17.0 16.0 15.0 14.0 13.0 12.0...
  • Page 46 15.1.2 CS-Z71XKEW CU-Z71XKE 14.0 13.0 12.0 11.0 Outdoor Air Temperature (°C) 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 Outdoor Air Temperature (°C) 1.00 0.90 0.80 Outdoor Air Temperature (°C)

  • Page 47: 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 15.2.1 CS-Z50XKEW CU-Z50XKE 55.00 50.00 45.00 40.00 35.00 30.00 25.00...
  • Page 48 15.2.2 CS-Z71XKEW CU-Z70XKE 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) 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 2.00 1.50...

  • Page 49: Piping Length Correction Factor

    15.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 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...

  • Page 50: Exploded View And Replacement Parts List

    16. Exploded View and Replacement Parts List 16.1 Indoor Unit CWH55025J CWH55051AJ Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 51 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z50XKEW CS-Z71XKEW REMARK CHASSIS COMPLETE ACXD50C04180 ← FAN MOTOR L6CBYYYL0376 L6CBYYYL0377 CROSS-FLOW FAN COMPLETE ACXH02C01340 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 ← FAN MOTOR BRACKET ACXD54-04360 ← EVAPORATOR...
  • Page 52 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z50XKEW CS-Z71XKEW 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 53: Outdoor Unit

    16.2 Outdoor Unit 16.2.1 CU-Z50XKE 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 54 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z50XKE REMARK CHASSIS COMPLETE ACXD52K00320 FAN MOTOR BRACKET ACXD54-00140 SCREW - FAN MOTOR BRACKET ACXH55-07140 FAN MOTOR L6CAYYYL0076 SCREW - FAN MOTOR MOUNT CWH551106J PROPELLER FAN ASSY ACXH03K00070 NUT - PROPELLER FAN CWH56053J ANTI - VIBRATION BUSHING CWH50077...
  • Page 55 INSTALLATION INSTRUCTION ACXF60-42671 INSTALLATION INSTRUCTION ACXF60-42681 INSTALLATION INSTRUCTION ACXF60-42691 INSTALLATION INSTRUCTION ACXF60-42701 INSTALLATION INSTRUCTION ACXF60-42711 INSTALLATION INSTRUCTION ACXF60-42721 O-RING ACXB81-06510 PANASONIC BADGE CWE373439 WIRE NET ACXD04-00130A CWG861461 BASE BOARD-COMPLETE CWG62C1131 SHOCK ABSORBER CWG713217 SHOCK ABSORBER CWG713218 C.C.CASE ACXG50-48881 MODEL LABEL...
  • Page 56 16.2.2 CU-Z71XKE 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 57 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z71XKE REMARK CHASSIS COMPLETE ACXD52K00280 FAN MOTOR BRACKET ACXD54-00140 SCREW - FAN MOTOR BRACKET ACXH55-07140 FAN MOTOR L6CAYYYL0076 SCREW - FAN MOTOR MOUNT CWH551106J PROPELLER FAN ASSY ACXH03K00070 NUT - PROPELLER FAN CWH56053J ANTI - VIBRATION BUSHING CWH50055...
  • Page 58 ACXF60-42681 INSTALLATION INSTRUCTION ACXF60-42691 INSTALLATION INSTRUCTION ACXF60-42701 INSTALLATION INSTRUCTION ACXF60-42711 INSTALLATION INSTRUCTION ACXF60-42721 ACCUMULATOR ACXB13-00010 O-RING ACXB81-06510 PANASONIC BADGE CWE373439 WIRE NET ACXD04-00130A CWG861461 BASE BOARD-COMPLETE ACXG62C00230 SHOCK ABSORBER - LEFT CWG713217 SHOCK ABSORBER - RIGHT CWG713218 C.C.CASE ACXG50-48881 MODEL LABEL...

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