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 2019...
Page 2: Table Of Contents
Outdoor Unit ..........52 Disassembly and Assembly Instructions ... 143 Installation Instruction ........57 18.1 CS-Z20VKR CS-Z25VKR CS-Z35VKR 12.1 Select the Best Location ......57 CS-Z42VKR ..........143 12.2 Indoor Unit ..........58 ...
Page 3: Safety Precautions
1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Confirm the type of gas used before installation.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed.
Page 4 WARNING Engage authorized dealer or specialist for installation and servicing. If installation or servicing done by the user is defective, 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 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 The appliance shall be stored, installed and operated in a well ventilated room with indoor floor area larger than A ) [refer Table A] and without any continuously operating ignition source.
Page 7 CAUTION Installation (Space)  Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.  Must ensure that pipe-work shall be protected from physical damage.  Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.
Page 8 CAUTION 2-5. 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 9 CAUTION The following leak detection methods are deemed acceptable for all refrigerant systems.  No leaks shall be detected when using detection equipment with a capability of 10 Pa•m /s or better, for example, a helium sniffer.  Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re- calibration.
Page 10 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 11: Specification
3. Specification Model CS-Z20VKR CS-Z25VKR Indoor POS (EAN) 5025232891009 5025232891023 Model CU-Z20VKR CU-Z25VKR Outdoor POS (EAN) 5025232891306 5025232891320 Performance Test Condition Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid.
Page 12 Model CS-Z20VKR CS-Z25VKR Indoor POS (EAN) 5025232891009 5025232891023 Model CU-Z20VKR CU-Z25VKR Outdoor POS (EAN) 5025232891306 5025232891320 Type Cross-flow Fan Cross-flow Fan Material ASG20K1 ASG20K1 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power 47.3 47.3 Output Power...
Page 13 Model CS-Z20VKR CS-Z25VKR Indoor POS (EAN) 5025232891009 5025232891023 Model CU-Z20VKR CU-Z25VKR Outdoor POS (EAN) 5025232891306 5025232891320 Height mm (inch) 295 (11-5/8) / 542 (21-11/32) 295 (11-5/8) / 542 (21-11/32) (I/D / O/D) Width Unit mm (inch) 919 (36-3/16) / 780 (30-23/32)
Page 14 Model CS-Z35VKR CS-Z42VKR Indoor POS (EAN) 5025232891047 5025232891061 Model CU-Z35VKR CU-Z42VKR Outdoor POS (EAN) 5025232891344 5025232891368 Performance Test Condition Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 0.90 3.50 4.00 0.90...
Page 15 Model CS-Z35VKR CS-Z42VKR Indoor POS (EAN) 5025232891047 5025232891061 Model CU-Z35VKR CU-Z42VKR Outdoor POS (EAN) 5025232891344 5025232891368 Type Cross-flow Fan Cross-flow Fan Material ASG20K1 ASG20K1 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power 47.3 47.3 Output Power Cool Heat Cool...
Page 16 Model CS-Z35VKR CS-Z42VKR Indoor POS (EAN) 5025232891047 5025232891061 Model CU-Z35VKR CU-Z42VKR Outdoor POS (EAN) 5025232891344 5025232891368 Height mm (inch) 295 (11-5/8) / 542 (21-11/32) 295 (11-5/8) / 695 (27-3/8) (I/D / O/D) Width Unit mm (inch) 919 (36-3/16) / 780 (30-23/32) 919 (36-3/16) / 875 (34-15/32) (I/D / O/D) Depth...
Page 17 Model CS-Z50VKR CS-Z60VKR Indoor POS (EAN) 5025232891085 5025232891092 Model CU-Z50VKR CU-Z60VKR Outdoor POS (EAN) 5025232891382 5025232891399 Performance Test Condition Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 0.95 5.00 6.00 0.95...
Page 18 Model CS-Z50VKR CS-Z60VKR Indoor POS (EAN) 5025232891085 5025232891092 Model CU-Z50VKR CU-Z60VKR Outdoor POS (EAN) 5025232891382 5025232891399 Type Cross-flow Fan Cross-flow Fan Material ASG33 ASG33 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power Output Power Cool Heat Cool Heat Cool...
Page 19 Model CS-Z50VKR CS-Z60VKR Indoor POS (EAN) 5025232891085 5025232891092 Model CU-Z50VKR CU-Z60VKR Outdoor POS (EAN) 5025232891382 5025232891399 Height mm (inch) 302 (11-29/32) / 695 (27-3/8) 302 (11-29/32) / 695 (27-3/8) (I/D / O/D) Width Unit mm (inch) 1120 (44-1/8) / 875 (34-15/32) 1120 (44-1/8) / 875 (34-15/32) (I/D / O/D) Depth...
Page 20 Model CS-Z71VKR CS-Z80VKR Indoor POS (EAN) 5025232891115 5025232891122 Model CU-Z71VKR CU-Z80VKR Outdoor POS (EAN) 5025232891412 5025232891429 Performance Test Condition Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 1.70 7.10 8.10 1.70...
Page 21 Model CS-Z71VKR CS-Z80VKR Indoor POS (EAN) 5025232891115 5025232891122 Model CU-Z71VKR CU-Z80VKR Outdoor POS (EAN) 5025232891412 5025232891429 Type Cross-flow Fan Cross-flow Fan Material ASG33 ASG33 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power Output Power Cool Heat Cool Heat Cool...
Page 22 Model CS-Z71VKR CS-Z80VKR Indoor POS (EAN) 5025232891115 5025232891122 Model CU-Z71VKR CU-Z80VKR Outdoor POS (EAN) 5025232891412 5025232891429 Height mm (inch) 302 (11-29/32) / 695 (27-3/8) 302 (11-29/32) / 795 (31-5/16) (I/D / O/D) Width Unit mm (inch) 1120 (44-1/8) / 875 (34-15/32) 1120 (44-1/8) / 875 (34-15/32) (I/D / O/D) Depth...
Page 23: 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 (Z20/25/35VK) and 30 meters (Z42/50/60/71/80VK) during single split connection only ...
Page 24: 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. Remote Control Receiver Vertical airflow direction louver Do not adjust by hand.
Page 25: Dimensions
6. Dimensions Indoor Unit 6.1.1 CS-Z20VKR CS-Z25VKR CS-Z35VKR CS-Z42VKR <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 <Remote Control> <Bottom View> DRAIN HOSE Gas side <Rear View>...
Page 26 6.1.2 CS-Z50VKR CS-Z60VKR CS-Z71VKR CS-Z80VKR <Top View> <Side View> <Front View> <Side View> Air intake 1120 direction Left piping Air outlet Right piping hole direction hole <Remote Control> <Bottom View> <Rear View> Liquid side DRAIN HOSE Gas side (41-61) <Remote Control Holder> Relative position between the indoor unit and the installation plate <Front View>...
Page 27: Outdoor Unit
Outdoor Unit 6.2.1 CU-Z20VKR CU-Z25VKR CU-Z35VKR <Top View> Space necessary for installation 67.6 104.7 104.9 60.5 100 mm 100 mm 1000 mm Anchor Bolt Pitch 320 x 570 2-way valve at Liquid side <Side View> (High Pressure) <Side View> <Front View> 3-way valve at Gas side (Low Pressure)
Page 28 6.2.3 CU-Z80VKR <Top View> Space necessary for installation 27.5 100mm 100mm 1000mm Anchor Bolt Pitch 360.5 × 613 <Side View> <Side View> <Front View> 3-way valve at Gas side (Low Pressure) 2-way valve at Liquid side Unit : mm (High Pressure) <Chassis>...
Page 29: Refrigeration Cycle Diagram
7. Refrigeration Cycle Diagram CU-Z20VKR CU-Z25VKR CU-Z35VKR INDOOR OUTDOOR LIQUID EXPANSION SIDE MUFFLER VALVE STRAINER 2-WAY STRAINER (FOR Z20VK ONLY) VALVE PIPE PIPE TEMP. TEMP. SENSOR 1 SENSOR INTAKE INTAKE TEMP. TEMP. SENSOR SENSOR HEAT EXCHANGER HEAT EXCHANGER (EVAPORATOR) (CONDENSER) SIDE 4-WAY VALVE 3-WAY...
Page 30: Cu-Z42Vkr Cu-Z50Vkr Cu-Z60Vkr Cu-Z71Vkr Cu-Z80Vkr
CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR CU-Z80VKR INDOOR OUTDOOR LIQUID EXPANSION SIDE STRAINER VALVE PIPE TEMP. 2-WAY RECEIVER SENSOR VALVE (FOR Z42/60/71/80VK PIPE ONLY) TEMP. SENSOR 1 INTAKE TEMP. TEMP. SENSOR SENSOR PIPE TEMP. SENSOR 2 (FOR Z80VK ONLY) HEAT EXCHANGER HEAT EXCHANGER (EVAPORATOR) (CONDENSER) SIDE...
Page 31: Block Diagram
8. Block Diagram CU-Z20VKR...
Page 32: Cu-Z25Vkr Cu-Z35Vkr
CU-Z25VKR CU-Z35VKR...
Page 33: Cu-Z42Vkr Cu-Z50Vkr Cu-Z60Vkr Cu-Z71Vkr
CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR...
Page 34: Cu-Z80Vkr
CU-Z80VKR...
Page 35: Wiring Connection Diagram
9. Wiring Connection Diagram Indoor Unit HAJEM-A CN-CNT (WHT) (WHT) AUTO SW TERMINAL (SW01) AC306 BOARD FUSE301 (BLK) T3.15A L250V OUTDOOR AC303 (WHT) UNIT UP DOWN NOISE FILTER LOUVER MOTOR AC304 (RED) CIRCUIT (OUTER) TEMP. FUSE LEFT RIGHT 102°C LOUVER MOTOR G301 (GRN) UP DOWN LOUVER MOTOR...
Page 36: Outdoor Unit
Outdoor Unit 9.2.1 CU-Z20VKR YELLOW (YEL) OR T(W) REMARKS : BLUE SINGLE PHASE : BLACK TO INDOOR UNIT POWER SUPPLY : WHITE : RED BLUE : YELLOW (RED) (BLU) : GRAY OR R(U) OR S(V) : GREEN TRADEMARK REACTOR : PINK TERMINAL : BROWN COMPRESSOR TERMINAL...
Page 37 9.2.2 CU-Z25VKR CU-Z35VKR YELLOW (YEL) OR T(W) REMARKS BLU : BLUE BLK : BLACK SINGLE PHASE POWER SUPPLY TO INDOOR UNIT WHT : WHITE RED : RED BLUE YLW : YELLOW (RED) (BLU) GRY : GRAY OR R(U) OR S(V) GRN : GREEN TERMINAL TRADEMARK...
Page 38 9.2.3 CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR YELLOW (YEL) OR T(W) REMARKS BLU : BLUE BLK : BLACK SINGLE PHASE POWER SUPPLY TO INDOOR UNIT WHT : WHITE RED : RED BLUE YLW : YELLOW (RED) (BLU) GRY : GRAY OR R(U) OR S(V) GRN : GREEN TERMINAL...
Page 39 9.2.4 CU-Z80VKR REACTOR YELLOW (YLW) TO INDOOR UNIT SINGLE PHASE POWER SUPPLY REMARKS : BLUE : BROWN BLUE TERMINAL TERMINAL : ORANGE : BLACK (BLU) (RED) BOARD BOARD : YELLOW : WHITE CONNECTOR (TRADEMARK) : GRAY : RED WHITE YLW/GRN COMP.
Page 40: Electronic Circuit Diagram
10. Electronic Circuit Diagram 10.1 Indoor Unit...
Page 41 Indoor PCB CN-STM1, CN-STM2 and CN-STM3 Measure the resistance between the terminals Sensor (Thermistor) Characteristics 1-2, 1-3, 1-4, 1-5 230Ω - 270Ω (at 25°C) [1] Brown color Pipe temp. Sensor Intake Air Temp. Sensor CN-FM 280Vdc - 340Vdc 15Vdc feedback output pulses 0-15Vdc speed control input voltage 4 - 7 15 volt...
Page 42: Outdoor Unit
10.2 Outdoor Unit 10.2.1 CU-Z20VKR...
Page 43 10.2.2 CU-Z25VKR CU-Z35VKR...
Page 44 DC FM CN-MTR1 Feedback output (0 - 5Vdc pulse) Sensor (Thermistor) Compressor Temp. Sensor Characteristics (Thermistor) Characteristics 5Vdc Outdoor Air Sensor Outdoor Heat Exchanger Sensor CN-MTR2 (Measure winding resistance / voltage) ~80 ohm / 15Vdc ~80 ohm / 15Vdc ~80 ohm / 15Vdc CN-TH1 (Measure resistance) Outdoor air intake sensor (15KΩ...
Page 45 10.2.3 CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR...
Page 46 DC FM CN-MTR1 Feedback output (0 - 5Vdc pulse) Sensor (Thermistor) Compressor Temp. Sensor Characteristics (Thermistor) Characteristics 5Vdc Outdoor Air Sensor Outdoor Heat Exchanger Sensor CN-MTR2 (Measure winding resistance / voltage) ~80 ohm / 15Vdc ~80 ohm / 15Vdc ~80 ohm / 15Vdc CN-TH1 (Measure resistance) Outdoor air intake sensor (15KΩ...
Page 47 10.2.4 CU-Z80VKR...
Page 48 CN-FM Sensor (Thermistor) Compressor Temp. Sensor 280Vdc - 340Vdc Characteristics (Thermistor) Characteristics Outdoor Air Sensor Outdoor Heat Exchanger Sensor 15Vdc feedback output pulses 0-15Vdc speed control input voltage CN-TH1 (Measure resistance) Outdoor air intake sensor (15K ±5% at 25°C) Pipe temp sensor (4.96K ±5% at 25°C) 100 120 CN-TANK (Measure resistance) Temperature (...
Page 49: Printed Circuit Board
11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC304 AC303 G301 RY-PWR AC306 CN-FM CN-CNT CN-STM2 CN-STM3 HAJEM-A CN-NANO CN-STM1 CN-RMT CN-RCV CN-DISP CN-TH JP1 (Random Auto Restart Enable/Disable)
Page 50 11.1.2 Indicator Printed Circuit Board (CS-Z20/25/35/42VKR) LED205 LED203 LED201 LED204 LED202 CN-DISP 11.1.3 Receiver Printed Circuit Board (CS-Z20/25/35/42VKR) CN-RCV...
Page 51 11.1.4 Indicator and Receiver Printed Circuit Board (CS-Z50/60/71/80VKR) LED205 LED203 LED201 LED204 LED202 CN-DISP 11.1.5 High Voltage Power Supply Printed Circuit Board 11.1.5.1 nanoe...
Page 52: Outdoor Unit
11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board 11.2.1.1 CU-Z20VKR POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-V1 CN-MTR1 CN-HOT CN-TH CN-TANK CN-DEMAND CN-STM DATA AC-BLK AC-WHT...
Page 53 11.2.1.2 CU-Z25VKR CU-Z35VKR POWER TRANSISTOR (IPM) CN-MTR2 CN-MTR1 CN-DEMAND CN-TH1 CN-TANK CN-STM CN-HOT AC-WHT DATA CURRENT TRANSFORMER (CT) AC-BLK CN-V1...
Page 54 11.2.1.3 CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR POWER TRANSISTOR (IPM) CN-MTR2 CN-MTR1 CN-TH1 CN-DEMAND CN-TANK CN-HOT CN-STM AC-WHT DATA CURRENT TRANSFORMER (CT) AC-BLK CN-V1...
Page 55 11.2.1.4 CU-Z80VKR POWER TRANSISTOR (IPM) AC-WHT CURRENT TRANSFORMER (CT) AC-BLK CN-HOT CN-V1 CN-COM CN-DEMAND CN-FM CN-TANK CN-TH1 CN-EV...
Page 56 11.2.2 Demand Control Printed Circuit Board 11.2.2.1 CU-Z20VKR CU-Z25VKR CU-Z35VKR CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR CN-DEMAND CN-OPT CN-PWR AC_GND 11.2.2.2 CU-Z80VKR CN-WHT CN-BLK CN-COM CN-DEMAND CN-OPT CN-PWR...
Page 57: Installation Instruction
12. Installation Instruction 12.1 Select the Best Location 12.1.3 Indoor/Outdoor Unit Installation Diagram 12.1.1 Indoor Unit Piping direction Attention not to bend  (Front side) Do not install the unit in excessive oil fume area up drain hose Right such as kitchen, workshop and etc. Right Rear Left...
Page 58: 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 59 12.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping Wall Insert the piping sleeve to the hole. Indoor Outdoor Fix the bushing to the sleeve. Cut the sleeve until it extrudes about 15 mm 15 mm from the wall.
Page 60 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 61 Replace the drain hose Rear view for left piping installation Connection cable Piping Drain hose More than 950 mm (3/4 ~ 1.75HP) or Connection cable Drain hose more than 1150 mm Drain cap Adjust the piping slightly (2.0 ~ 3.0HP) Drain hose downwards.
Page 62 Remove the tapes and connect the connection cable between indoor unit and outdoor unit according to the diagram below. Terminal Board Tape Earth Wire longer than others AC wires Connection cable for safety Terminals on the indoor unit Indoor & outdoor reason Connection cable Colour of wires...
Page 63: Outdoor Unit
12.3 Outdoor Unit 12.3.1 Install the Outdoor Unit  After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
Page 64 AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.3.3 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 65 12.3.4 Connect the Cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Applicable for : CU-Z20***, CU-Z25***, CU-Z35***, Cable connection to the power supply through CU-Z42***, CU-Z50***, CU-Z60***, Isolating Devices (Disconnecting means). CU-Z71*** Connect approved type polychloroprene sheathed power supply cord 3 x 1.5...
Page 66 Terminal Board Earth wire longer than others AC wires for safety reason Holder DRED Indoor & Power (Demand outdoor response supply Connection enabling cord Applicable for : CU-Z80*** cable devices) Remote Isolating Devices Indoor unit Agent WARNING This equipment must be properly earthed. Note: ...
Page 67 12.3.7 Evaluation of the Performance  Operate the unit at cooling/heating operation mode for fifteen minutes or more.  Measure the temperature of the intake and discharge air.  Ensure the difference between the intake temperature and the discharge is more than 8°C during Cooling operation or more than 14°C during Heating operation.
Page 68: Wired Remote Controller Installation Manual (Optional Accessory: Cz-Rd514C)
12.4 Wired Remote Controller Installation Manual (Optional Accessory: CZ-RD514C) 12.4.1 Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before installation.  Electrical work must be installed by a licensed electrician.  The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below.
Page 69 12.4.2 Attached Accessories Name Diagram Remark Remote controller Remote controller cable Length (9.9 m) Screw Installing the remote controller to an outlet box (M4 machine pitched – 30 mm) (embedded cable) Screw Installing the remote controller to the wall (M4 self tapping – 14 mm) (exposed cable) Remote controller cable holder Holder for remote controller cable at control board...
Page 70 Embed an outlet box (JIS C 8336) into the wall. Outlet box may be purchased separately. Medium-sized 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 3. Make sure that the lower case is flat against the wall at this time, with no bending.
Page 71 B. If Remote Controller Cable is Exposed Install the remote controller lower case to the wall with the two accessory screws 4. Fasten the screws properly until screw head is lower than the rib and reach the base of remote controller lower case to ensure they do not damage the PCB inside the remote controller 1.
Page 72 12.4.5 Connecting the Remote Controller Cable to Indoor Unit CAUTION Be sure to turn off the main power before installing and connecting the remote controller. Otherwise, it will cause the electrical shock. Open front grille complete Front grille complete (Please refer HOW TO TAKE OUT FRONT GRILLE).
Page 73: 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 74 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 75: 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 76 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 77 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 78 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 79: 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 80: 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 81: 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 82 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 83 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 84 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 85: 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 86 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 87 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 88 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 89 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 90 (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 91: 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 92 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 93: Operation And Control
14. Operation and Control 14.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
Page 94 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 95: Indoor Fan Motor Operation
14.2 Indoor Fan Motor Operation 14.2.1 Basic Rotation Speed (rpm) A. Basic Rotation Speed (rpm) i. Manual Fan Speed [Cooling, Dry, Fan]  Fan motor’s number of rotation is determined according to remote control setting. Remote control ○ ○ ○ ○...
Page 96: 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 97 Side View (Inner Vane) Reference point 128º (Z20/25/35/42VK) 148º (Z50/60/71/80VK) Step 1 Stopper Step 2 Step 3 Closed Position Step 4 Step 5 Side View (Outer Vane) Closed Stopper Position 156º (Z20/25/35/42VK) 101º (Z50/60/71/80VK) Reference point Step 1 Step 2 Step 3 Step 4 Step 5...
Page 98: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)
0° Top View A: swing 43.0°C 40.0°C B: fix front Indoor Heat Exchanger Temperature Figure 1 Figure 2  Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as Figure 2 above. Pattern Airflow Direction Patterns at Remote Control...
Page 99: Powerful Mode Operation
 Mild Dry button is pressed.  ECO button is pressed.  iAUTO-X button is pressed.  FAN SPEED button is pressed. When quiet operation is stopped, operation is shifted to normal operation with previous setting.   When operation mode is changed, quiet operation is shifted to quiet operation of the new mode. ...
Page 100: Auto Restart Control
14.10 Auto Restart Control  When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.
Page 101  Remote Control Receiving Sound Normal Operation  nanoe X Operation : Beep nanoe X Operation  Normal Operation : Beep Stop  nanoe X individual Operation : Beep nanoe X individual Operation  Stop : Long Beep  Power failure During nanoe X individual operation, if power failure occurs, after power resumes, nanoe X individual...
Page 102: Economy Mode Operation
14.13 Economy Mode Operation  This operation is use to reduce electrical power consumption by adjusting the set temperature.  Economy operation starts when the ECO button is pressed during cooling or dry or heating operation.  During Cooling/Dry economy operation, target setting temperature will be adjusted by +2.0°C. Internal setting temperature limit shift to maximum 35.0°C (maximum 33.0°C + 2.0°C Economy shift).
Page 103: Demand Control
14.15 Demand Control  When the air-conditioner connected to Demand Response Enabling Devices (DRED), the power consumption especially during peak hours could be controlled. Relay 1 DRM1 Relay 2 DRM2 Relay 3 DRM3 DRED AIR-CONDITIONER  Three Demand response modes (DRM) are available DRM1 = Compressor cut off DRM2 = Operate at 50% of rated input power DRM3 = Operate at 75% of rated input power...
Page 104: 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 105 15.1.4 Compressor Overheating Prevention Control  Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.  If compressor discharge temperature exceeds 103°C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.
Page 106: 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 107: Protection Control For Heating Operation
15.2.6 Odor Cut Control  To reduce the odor released from the unit. Start Condition  AUTO FAN Speed is selected during COOL or DRY operation.  During freeze prevention control and timer preliminary operation, this control is not applicable. Control content ...
Page 108 15.3.3 Overload Protection Control  The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below.  If the heat exchanger temperature exceeds 60.0°C, compressor will stop. 60.0°C Frequency Reduce 55.0°C 52.0°C Frequency Limited 49.0°C 46.0°C Free Indoor Heat...
Page 109: Servicing Mode
16. Servicing Mode 16.1 Auto OFF/ON Button Auto OFF/ON Auto OFF/ON Auto OFF/ON Button pressed Button pressed Button pressed 5 sec 5 sec Auto Operation Test Run Operation Stop Test Run Operation Stop (Forced Cooling Operation) (Forced Heating Operation) Beep Beep x 2 AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed.
Page 110: Remote Control Button
REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...
Page 111 16.2.6 Special Setting mode LCD display area: Special setting display area (highlighted in color) Function Options (If any) Cannot enter this special setting mode under the following conditions: 1 Operation ON. 2 Under [Real/ON/OFF] time setting mode. To enter zone 1 area: Normal display Enter Zone1 mode...
Page 112 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. Function 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 113: 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 114 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 115: Breakdown Self Diagnosis Function
17.2 Breakdown Self Diagnosis Function 17.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  Every press of the button (up or down) will Once abnormality has occurred during operation, increase abnormality numbers and transmit the unit will stop its operation, and Timer LED abnormality code signal to the main unit.
Page 116: Error Code Table
17.3 Error Code Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only  Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
Page 117 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 118: 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 119 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 120 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 121 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 122 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 123 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 124 17.4.7 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 1 are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
Page 125 17.4.8 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 2 are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
Page 126 17.4.9 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 127 17.4.10 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 128 17.4.11 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 129 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 130 17.4.13 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) 17.4.13.1 CU-Z20/25/35/42/50/60/71VKR 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 131 17.4.13.2 CU-Z80VKR 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.  Operation stops due to breaking of wire inside the fan motor.
Page 132 17.4.14 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 133 17.4.15 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 134 17.4.16 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 135 17.4.17 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 136 17.4.18 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions  The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused  Lack of gas.  3-way valve close. Troubleshooting When F91 indication happens. For safety reason and to prevent component breakdown, always switch off the power before remove and...
Page 137 17.4.19 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 When F93 indication happens.
Page 138 17.4.20 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 139 17.4.21 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data (120°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
Page 140 17.4.22 F97 (Compress Overheating) Malfunction Decision Conditions  During operation of cooling and heating, when compressor tank temperature data (103°C) is detected by the compressor tank temperature sensor. Malfunction Caused  Faulty compressor tank temperature sensor  2/3 way valve closed ...
Page 141 17.4.23 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 142 17.4.24 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 143: 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-Z20VKR CS-Z25VKR CS-Z35VKR CS-Z42VKR 18.1.1...
Page 144 18.1.1.3 To Remove Electronic Controller 3 Hooks (Top, left and right hand side) Remove control board cover by releasing 3 hooks. Figure 2 Detach the terminal wire (Black), terminal wire (Red) and earth wire screws. Pull out the Detach all connectors as labelled from the electronic electronic controller.
Page 145 18.1.1.4 To Remove Discharge Grille Remove the screw and pull out the HVU unit. HVU unit Figure 5 11. Pull out and remove the drain hose from the discharge grille. 12. Then pull the discharge grille downward gently to dismantle it. Figure 6 18.1.1.5 To Remove Control Board...
Page 146 18.1.1.6 To Remove Cross Flow Fan and Indoor Fan Motor 14. Remove the screw that holding the cross flow fan and fan motor axis. Figure 8 16. Remove the bearing by pulling it gently. 15. Remove the screw from the evaporator. Figure 9...
Page 147 Evaporator 17. Push the holdfast to the left and lift up the evaporator. 19. Fan motor can be removed after Cross flow fan the removal of the cross flow fan. Reminder: To reinstall the fan motor, adjust the fan motor connector to 90° towards you before fixing control board.
Page 148 18.1.1.7 To Assemble the Front Grille Receiver PCB CAUTION Do not directly fix the front grille complete, to avoid hitting the Receiver PCB. Figure 12 Gently assemble the right side of the front grille first then fix the left side. Figure 13...
Page 149 18.1.1.8 To Assemble the Intake Grille Hook Intake Grille Align the intake grille hooks into the slot. Hook Place in the hook to the slot. Then slightly bend the intake grille and push in the hooks into the slot. Figure 14...
Page 150: Cs-Z50Vkr Cs-Z60Vkr Cs-Z71Vkr Cs-Z80Vkr
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-Z50VKR CS-Z60VKR CS-Z71VKR CS-Z80VKR 18.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures...
Page 151 18.2.1.3 To Remove Electronic Controller 3 Hooks (left and right hand side) Remove control board cover by releasing 4 hooks. Figure 2 Detach the terminal wire (Black), terminal wire (Red) and earth wire screws. Pull out the Detach all connectors as labelled from the electronic electronic controller.
Page 152 18.2.1.4 To Remove Discharge Grille Remove the screw and pull out the HVU unit. HVU unit Figure 5 11. Pull out and remove the drain hose from the discharge grille. 12. Then pull the discharge grille downward gently to dismantle it. Figure 6 18.2.1.5 To Remove Control Board...
Page 153 18.2.1.6 To Remove Cross Flow Fan and Indoor Fan Motor 14. Remove the screw that holding the cross flow fan and fan motor axis. Figure 8 16. Remove the bearing by pulling it gently. 15. Remove the screw from the evaporator. Figure 9...
Page 154 Evaporator 17. Push the holdfast to the left and lift up the evaporator. 19. Fan motor can be removed after Cross flow fan the removal of the cross flow fan. Reminder: To reinstall the fan motor, adjust the fan motor connector to 90° towards you before fixing control board.
Page 155 18.2.1.7 To Assemble the Front Grille Receiver PCB CAUTION Do not directly fix the front grille complete, to avoid hitting the Receiver PCB. Figure 12 Gently assemble the right side of the front grille first then fix the left side. Figure 13...
Page 156 18.2.1.8 To Assemble the Intake Grille Hook Intake Grille Align the intake grille hooks into the slot. Hook Place in the hook to the slot. Then slightly bend the intake grille and push in the hooks into the slot. Figure 14...
Page 157: Outdoor Electronic Controller Removal Procedure
18.3 Outdoor Electronic Controller Removal Procedure 18.3.1 CU-Z20VKR CU-Z25VKR CU-Z35VKR Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Screws Top Panel Release 3 Terminal Screws Connectors, L, N and Earth Wire Screw.
Page 158 18.3.2 CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR 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...
Page 159 18.3.3 CU-Z80VKR Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 4 screws of the Top Panel. Fig. 3 Remove the Control Board. Fig. 4 Remove the 8 screws of the Electronic Fig. 1 Controller. Remove the 10 screws of the Front Panel. Fig.
Page 160: 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/240V 19.1.1 CS-Z20VKR CU-Z20VKR Indoor (°C) Outdoor DB (°C) 1998 1898 2270 2138...
Page 161 19.1.2 CS-Z25VKR CU-Z25VKR Indoor (°C) Outdoor DB (°C) 2436 2267 2769 2554 2612 2468 2605 2464 2538 2419 2324 2302 3212 2050 3093 1991 3017 1946 2911 1907 2801 1856 2603 1768 3466 1488 3382 1438 3311 1406 3194 1359 3066 1303 2875 1228 2371 2371...
Page 162 19.1.3 CS-Z35VKR CU-Z35VKR Indoor (°C) Outdoor DB (°C) 3411 3141 3876 3539 3657 3420 3647 3414 3553 3351 3254 3190 4497 2840 4330 2758 4224 2696 4075 2642 3921 2571 3644 2450 4853 2062 4735 1993 4636 1949 4472 1883 4293 1805 4025 1702 3319 3319...
Page 163 19.1.4 CS-Z42VKR CU-Z42VKR Indoor (°C) Outdoor DB (°C) 4093 3102 4652 3495 4389 3377 4376 3371 4264 3310 3905 3150 5397 2805 5196 2724 5069 2663 4890 2609 4706 2539 4373 2419 5823 2036 5682 1968 5563 1924 5366 1860 5152 1782 4830 1680 3983 3378...
Page 164 19.1.5 CS-Z50VKR CU-Z50VKR Indoor (°C) Outdoor DB (°C) 4872 4440 5538 5002 5225 4833 5209 4825 5076 4737 4649 4508 6425 4014 6185 3899 6034 3811 5821 3734 5602 3635 5206 3463 6932 2915 6765 2817 6623 2754 6388 2662 6133 2551 5750 2405 4741 4741...
Page 165 19.1.6 CS-Z60VKR CU-Z60VKR Indoor (°C) Outdoor DB (°C) 5847 4824 6645 5435 6270 5252 6251 5243 1070 6091 5147 1132 5579 4898 1318 7710 4362 7422 4236 7241 4141 6985 4057 1133 6722 3949 1146 6247 3763 1380 8319 3167 8118 3060 7947 2993 7666 2892 1102 7359 2772 1149 6900 2613 1366...
Page 166 19.1.7 CS-Z71VKR CU-Z71VKR Indoor (°C) Outdoor DB (°C) 6919 5434 7864 6122 1167 7419 5916 1046 7397 5906 1334 7208 5798 1411 6601 5518 1644 9123 4914 8783 4772 1213 8568 4665 1182 8266 4570 1413 7955 4449 1429 7392 4239 1720 9844 3567 9606 3448 1175 9404 3371 1166 9072 3258 1374 8709 3122 1433 8165 2944 1703 6732 5917...
Page 167 19.1.8 CS-Z80VKR CU-Z80VKR Indoor (°C) Outdoor DB (°C) 7796 5737 8860 6463 1374 8360 6245 1232 8335 6235 1571 8121 6120 1662 7438 5825 1935 19 10279 5187 9896 5037 1428 9655 4924 1392 9314 4824 1664 8963 4696 1683 8329 4474 2026 22 11092 3766 924 10824 3639 1384 10597 3559 1373 10222 3439 1619 9813 3296 1687 9200 3107 2006 7586 6246...
Page 168: Heat Mode Performance Data
19.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C Voltage: 230V/240V 19.2.1 CS-Z20VKR CU-Z20VKR Indoor (°C) Outdoor DB (°C) 1129 1825 1903 1934 1966 2305 2521 2684 2906 1131 2005 2015 2019 2023...
Page 169 19.2.6 CS-Z60VKR CU-Z60VKR Indoor (°C) Outdoor DB (°C) 4105 1720 5018 1762 5577 1764 5808 1765 6043 1766 6475 1774 6755 1779 6947 1771 7494 1700 4243 1657 5535 1759 5948 1758 6113 1758 6278 1758 6831 1771 7200 1780 7516 1771 8107 1700 4584 1569 5724 1755 6281 1609 6508 1551 6739 1493 6970 1659 7092 1770 8038 1779 8670 1707 5129 1497 5586 1752 6577 1556 6996 1477 7427 1399 6893 1619 6431 1768 8514 1781 9183 1710 19.2.7...
Page 170: Service Data
- Indoor room temperature: 27°C DryBulb/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: 230/240V 20.1.1 CS-Z20VKR CU-Z20VKR Current (A) Outdoor 230V 240V Temperature (°C)
Page 171 20.1.2 CS-Z25VKR CU-Z25VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 1.000 0.900 3.000 1.550 1.450 2.500 1.940 1.840 2.000 2.400 2.300 1.500 2.960 2.860 1.000 0.500 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 172 20.1.3 CS-Z35VKR CU-Z35VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 1.600 1.500 5.000 4.500 2.490 2.390 4.000 3.120 3.020 3.500 3.850 3.750 3.000 4.740 4.640 2.500 2.000 1.500 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 173 20.1.4 CS-Z42VKR CU-Z42VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 2.130 1.930 6.500 6.000 2.950 2.750 5.500 5.000 3.920 3.720 4.500 4.900 4.700 4.000 3.500 6.190 5.990 3.000 2.500 2.000 1.500 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 174 20.1.5 CS-Z50VKR CU-Z50VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 2.300 2.100 7.000 3.190 2.990 6.000 4.240 4.040 5.000 5.300 5.100 4.000 6.690 6.490 3.000 2.000 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 175 20.1.6 CS-Z60VKR CU-Z60VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 3.080 2.880 9.000 8.000 4.330 4.130 7.000 5.740 5.540 6.000 7.200 7.000 5.000 8.760 8.560 4.000 3.000 2.000 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 176 20.1.7 CS-Z71VKR CU-Z71VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 3.770 3.570 12.000 5.300 5.100 10.000 7.010 6.810 8.000 8.800 8.600 6.000 10.710 10.510 4.000 2.000 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 177 20.1.8 CS-Z80VKR CU-Z80VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 4.790 4.490 14.000 6.740 6.440 12.000 8.930 8.630 10.000 11.200 10.900 8.000 13.630 13.330 6.000 4.000 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 Outdoor Temperature （℃）...
Page 178: Heat Mode Outdoor Air Temperature Characteristic
- Indoor room temperature: 20°C DryBulb/-°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: 230/240V 20.2.1 CS-Z20VKR CU-Z20VKR Current (A) Outdoor 230V 240V Temperature (°C)
Page 179 20.2.2 CS-Z25VKR CU-Z25VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 3.600 2.280 2.180 3.400 2.610 2.510 3.200 2.800 2.700 3.000 3.000 2.900 2.800 3.500 3.400 2.600 2.400 2.200 2.000 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 180 20.2.3 CS-Z35VKR CU-Z35VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 5.300 3.430 3.330 5.100 3.910 3.810 4.900 4.700 4.200 4.100 4.500 4.500 4.400 4.300 4.100 5.250 5.150 3.900 3.700 3.500 3.300 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 181 20.2.4 CS-Z42VKR CU-Z42VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 9.000 4.680 4.480 8.500 4.970 4.770 8.000 7.500 5.610 5.410 7.000 6.100 5.900 6.500 6.000 8.510 8.310 5.500 5.000 4.500 4.000 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 182 20.2.5 CS-Z50VKR CU-Z50VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 8.500 4.520 4.420 8.000 4.810 4.710 7.500 5.420 5.320 7.000 6.500 5.900 5.800 6.000 8.230 8.130 5.500 5.000 4.500 4.000 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 183 20.2.6 CS-Z60VKR CU-Z60VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 12.000 6.130 5.930 11.000 6.520 6.320 10.000 7.360 7.160 9.000 8.000 7.800 8.000 11.160 10.960 7.000 6.000 5.000 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 184 20.2.7 CS-Z71VKR CU-Z71VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 14.000 7.210 7.010 13.000 7.660 7.460 12.000 8.640 8.440 11.000 9.400 9.200 10.000 13.110 12.910 9.000 8.000 7.000 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 185 20.2.8 CS-Z80VKR CU-Z80VKR Current (A) Outdoor 230V 240V Temperature (°C) 230V 240V 15.000 8.890 8.590 14.000 9.460 9.160 13.000 10.670 10.370 12.000 11.600 11.300 11.000 14.620 14.320 10.000 9.000 8.000 -16 -14 -12 -10 -8 -6 -4 -2 0 8 10 12 14 16 18 20 22 24 Outdoor Temperature（℃）...
Page 186: 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-Z20VKR CU-Z20VKR CS-Z25VKR CU-Z25VKR CS-Z35VKR CU-Z35VKR Cooling Capacity 1.02 1.0119 1.00 1.0000 0.98 0.9792 0.96 0.9550 0.94 0.9085 0.92 0.90...
Page 187 20.3.2 CS-Z42VKR CU-Z42VKR CS-Z50VKR CU-Z50VKR CS-Z60VKR CU-Z60VKR CS-Z71VKR CU-Z71VKR CS-Z80VKR CU-Z80VKR 1.03 Cooling Capacity 1.0159 1.01 1.0000 0.9889 0.99 0.9800 0.9646 0.97 0.951634 0.95 Pipe Length (m) 1.01 Heating Capacity 1.00 1.0056 0.99 1.0000 0.98 0.9831 0.97 0.9728 0.9641 0.96 0.9377 0.95 0.94...
Page 188: Exploded View And Replacement Parts List
21. Exploded View and Replacement Parts List 21.1 Indoor Unit 21.1.1 CS-Z20VKR CS-Z25VKR CS-Z35VKR CS-Z42VKR 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 189 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z20VKR CS-Z25VKR REMARK CHASSIS COMPLETE ACXD50C00200 ← FAN MOTOR L6CBYYYL0037 ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C10820 ACXB30C11150 FLARE NUT (LIQUID) CWT251048 ←...
Page 190 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z35VKR CS-Z42VKR REMARK CHASSIS COMPLETE ACXD50C00200 ← FAN MOTOR L6CBYYYL0037 L6CBYYYL0175 CROSS-FLOW FAN COMPLETE CWH02C1076 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C11150 ACXB30C01170 FLARE NUT (LIQUID) CWT251048 ←...
Page 191 21.1.2 CS-Z50VKR CS-Z60VKR CS-Z71VKR CS-Z80VKR 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 192 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z50VKR CS-Z60VKR REMARK CHASSIS COMPLETE ACXD50C01590 ← FAN MOTOR L6CBYYYL0193 ← CROSS-FLOW FAN COMPLETE CWH02C1136 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C10710 ← FLARE NUT (LIQUID) CWT251030 ←...
Page 193 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z50VKR CS-Z60VKR REMARK ACXG86-00130 ← SHOCK ABSORBER ACXG70-00850 ← SHOCK ABSORBER ACXG70-00840 ← C. C. CASE ACXG50-48640 ← MODEL LABEL ACXF85-06310 ACXF85-06320 (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). ...
Page 194 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z71VKR CS-Z80VKR REMARK CHASSIS COMPLETE ACXD50C01590 ← FAN MOTOR L6CBYYYL0194 ← CROSS-FLOW FAN COMPLETE CWH02C1136 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← EVAPORATOR ACXB30C23950 ACXB30C01700 FLARE NUT (LIQUID) CWT251030 ←...
Page 195 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-Z71VKR CS-Z80VKR REMARK ACXG86-00130 ← SHOCK ABSORBER ACXG70-00850 ← SHOCK ABSORBER ACXG70-00840 ← C. C. CASE ACXG50-48640 ← MODEL LABEL ACXF85-06330 ACXF85-06460 (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). ...
Page 196: Outdoor Unit
21.2 Outdoor Unit 21.2.1 CU-Z20VKR CU-Z25VKR CU-Z35VKR 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 197 REF. SAFETY PART NAME & DESCRIPTION QTY. CU-Z20VKR CU-Z25VKR CU-Z35VKR REMARK CHASSIS ASSY CWD52K1399 ← ← SOUND PROOF MATERIAL (COMP ACXG30-09030 CWG302719 ← TOP) FAN MOTOR BRACKET CWD541157 ← ← SCREW - FAN MOTOR BRACKET CWH551217 ← ← FAN MOTOR L6CAYYYL0064 ←...
Page 198 REF. SAFETY PART NAME & DESCRIPTION QTY. CU-Z20VKR CU-Z25VKR CU-Z35VKR REMARK PANASONIC BADGE CWE373439 ← ← INVERTER BADGE CWE373441 ← ← STRAINER CWB11094 ← ← DISCHARGE MUFFLER ACXB12-00650 ̶ ̶ DISCHARGE MUFFLER CWB121021 ← ← V-COIL COMPLETE (E/VALVE) ACXA43C06110 ←...
Page 199 21.2.2 CU-Z42VKR CU-Z50VKR CU-Z60VKR CU-Z71VKR 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 200 TERMINAL BOARD OUTER COVER - ACXH13C00170 ← COMPLETE PLATE CONTROL BOARD COVER TERMINAL CWH131470 ← TUBE ASS'Y (CAPPILARY TUBE) ACXT00C20450 DISCHARGE MUFFLER CWB121010 PANASONIC BADGE CWE373439 ← INVERTER BADGE CWE373441 ← SOUND PROOF MATERIAL CWG302636 ← SOUND PROOF MATERIAL (COMP TOP) CWG302630 ←...
Page 201 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z42VKR CU-Z50VKR REMARK BAG - COMPLETE CWG87C900 ← FLEXIBLE PIPE (L-TUBE) CWH5850080 ← PACKING CWB81012 ← OPERATING INSTRUCTION ACXF55-22380 ← INSTALLATION INSTRUCTION ACXF60-34040 ← CWG861461 ← BASE BOARD COMPLETE CWG62C1131 ACXG62C00940 SHOCK ABSORBER CWG713217 ←...
Page 202 CWH131470 ← PACKING CWB81043 ← TUBE ASS'Y (CAPPILARY TUBE) ACXT00C20450 ← RECEIVER CWB14030 ← ACCUMLATOR ACXB13-00010 ← PANASONIC BADGE CWE373439 ← INVERTER BADGE CWE373441 ← SOUND PROOF MATERIAL CWG302636 ← SOUND PROOF MATERIAL (COMP TOP) CWG302246 ← DISCHARGE MUFFLER CWB121013 ←...
Page 203 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z60VKR CU-Z71VKR REMARK BAG - COMPLETE CWG87C900 ← FLEXIBLE PIPE (L-TUBE) CWH5850080 ← PACKING CWB81012 ← OPERATING INSTRUCTION ACXF55-22380 ← INSTALLATION INSTRUCTION ACXF60-34040 ← CWG861461 ← BASE BOARD COMPLETE ACXG62C00940 ← SHOCK ABSORBER CWG713217 ←...
Page 204 21.2.3 CU-Z80VKR Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service part.
Page 205 CABINET SIDE PLATE L CWE041317A CABINET FRONT PLATE CO. CWE06K1063 CABINET TOP PLATE CWE031083A TERMINAL BOARD OUTER COVER CO. CWH13C1185 WIRE NET CWD041128A ACCESSORY CO. (DRAIN ELBOW) CWG87C900 FLEXIBLE PIPE (L-TUBE) CWH5850080 PACKING - L. TUBE CWB81012 PANASONIC BADGE CWE373439 INVERTER BADGE CWE373441...
Page 206 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-Z80VKR REMARK OPERATING INSTRUCTION ACXF55-22380 INSTALLATION INSTRUCTION ACXF60-34040 PLATE - C. B. COVER TERMINAL CWH131332 CWG861154 BASE BOARD COMPLETE CWG62C1081 SHOCK ABSORBER (L) CWG712880 SHOCK ABSORBER (R) CWG712879 C. C. CASE ACXG50-50880 MODEL LABEL ACXF85-05370 INDICATION LABEL - R32...

Panasonic CS-Z20VKR Service Manual

1 Safety Precautions

2 Precaution for Using R32 Refrigerant

3 Specification

4 Features

5 Location of Controls and Components

6 Dimensions

7 Refrigeration Cycle Diagram

8 Block Diagram

9 Wiring Connection Diagram

10 Electronic Circuit Diagram

11 Printed Circuit Board

12 Installation Instruction

13 Installation and Servicing Air Conditioner Using R32

14 Operation and Control

15 Protection Control

16 Servicing Mode

17 Troubleshooting Guide

18 Disassembly and Assembly Instructions

19 Technical Data

20 Service Data

21 Exploded View and Replacement Parts List

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