Panasonic CS-TZ9SKEW Service Manual
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Panasonic CS-TZ9SKEW 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.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
WARNING
PRECAUTION OF LOW TEMPERATURE
Indoor Unit
CS-TZ9SKEW
CS-TZ12SKEW
CS-TZ15SKEW
CS-TZ18SKEW
CS-TZ24SKEW
Order No: PAPAMY1603029CE
Outdoor Unit
CU-TZ9SKE
CU-TZ12SKE
CU-TZ15SKE
CU-TZ18SKE
CU-TZ24SKE
Destination
Europe
L.America
Turkey
S.Africa
© Panasonic Corporation 2016

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Summary of Contents for Panasonic CS-TZ9SKEW

  • Page 1 PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Corporation 2016...
  • 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

      12.2 Indoor Unit ..........58     12.3 Outdoor Unit ..........63     19.1 CS-TZ9SKEW CS-TZ12SKEW   CS-TZ15SKEW CS-TZ18SKEW ..... 139   Installation and Servicing Air Conditioner   19.2 CS-TZ24SKEW ........143     using R32 ............69  ...

  • Page 4: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before installation.  Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed. ...
  • Page 5 WARNING Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock. Install at a strong and firm location which is able to withstand weight of the set. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

  • Page 6: Precaution For Using R32 Refrigerant

    2. Precaution for Using R32 Refrigerant  The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models. However, pay careful attention to the following points: WARNING Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are special.
  • Page 7 CAUTION 2-5. No ignition sources  No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. He/She must not be smoking when carrying out such work.
  • Page 8 CAUTION Leak detection methods  Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re- calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)  Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. ...
  • Page 9 CAUTION Labelling  Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.  The label shall be dated and signed.  Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant. Recovery ...

  • Page 10: Specifications

    3. Specifications Indoor CS-TZ9SKEW CS-TZ12SKEW Model Outdoor CU-TZ9SKE CU-TZ12SKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 2.50 3.00 0.85 3.50 3.90 Capacity BTU/h 2900 8530 10200 2900...
  • Page 11 Indoor CS-TZ9SKEW CS-TZ12SKEW Model Outdoor CU-TZ9SKE CU-TZ12SKE Type Hermetic Motor (Rotary) Hermetic Motor (Rotary) Compressor Motor Type Brushless (6 poles) Brushless (6 poles) Output Power Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power 47.3...
  • Page 12 Indoor CS-TZ9SKEW CS-TZ12SKEW Model Outdoor CU-TZ9SKE CU-TZ12SKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) 3 (9.8) ~ 15 (49.2)
  • Page 13 Indoor CS-TZ15SKEW CS-TZ18SKEW Model Outdoor CU-TZ15SKE CU-TZ18SKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 4.20 4.60 0.98 5.00 5.40 Capacity BTU/h 2900 14300 15700 3340 17100 18400 Kcal/h 3610 3960...
  • Page 14 Indoor CS-TZ15SKEW CS-TZ18SKEW Model Outdoor CU-TZ15SKE CU-TZ18SKE Type Hermetic Motor (Rotary) Hermetic Motor (Rotary) Compressor Motor Type Brushless (6 poles) Brushless (4 poles) Output Power 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...
  • Page 15 Indoor CS-TZ15SKEW CS-TZ18SKEW Model Outdoor CU-TZ15SKE CU-TZ18SKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) 6.35 (1/4) / 12.70 (1/2) Standard length m (ft) 5.0 (16.4) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) 3 (9.8) ~ 20 (65.6) I/D &...
  • Page 16 Indoor CS-TZ24SKEW Model Outdoor CU-TZ24SKE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 0.98 6.80 8.10 Capacity BTU/h 3340 23200 27600 Kcal/h 5850 6970 Running Current – 9.50 – Input Power 2.10k 2.67k Annual Consumption –...
  • Page 17 Indoor CS-TZ24SKEW Model Outdoor CU-TZ24SKE Type Hermetic Motor (Rotary) Compressor Motor Type Brushless (4 poles) Output Power 1.70k Type Cross-Flow Fan Material ASG20K1 Motor Type DC / Transistor (8-poles) Input Power 94.8 Output Power Cool Heat 1040 Cool 1040 Heat 1130 Cool 1240...
  • Page 18 Indoor CS-TZ24SKEW Model Outdoor CU-TZ24SKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 15.88 (5/8) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 30 (98.4) I/D & O/D Height different m (ft) 20.0 (65.6) Additional Gas Amount...
  • Page 19 Example: The indoor units’ combination below is possible to connect to CU-2E15SBE. (Total nominal capacity of indoor units is between 3.2kW to 5.6kW) 1) Two CS-TZ7SKEW only. (Total nominal cooling capacity is 4.0kW) 2) One CS-TZ7SKEW and one CS-TZ9SKEW. (Total nominal cooling capacity is 4.5kW) Remarks for CU-3E23SBE 1. At least two indoor units must be connected.
  • Page 20 Example: The indoor units’ combination below is possible to connect to CU-4E27PBE. (Total nominal capacity of indoor units is between 4.5kW to 13.6kW) 1) Two CS-TZ9SKEW only. (Total nominal cooling capacity is 5.0kW) 2) Three CS-TZ12SKEW. (Total nominal cooling capacity is 9.6kW)

  • Page 21: 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 (0.75 ~ 2.0HP) and 20 meters (2.25HP) during single split connection only ...

  • Page 22: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Air Filters Auto OFF/ON button • Use when remote control is misplaced Front panel or malfunction occurs. Aluminium Fin INDICATOR POWER (Green) TIMER (Orange) Horizontal Airflow direction louver Remote Control • Manually adjustable. receiver Vertical Airflow direction louver...

  • Page 23: Dimensions

    6. Dimensions Indoor Unit 6.1.1 CS-TZ9SKEW CS-TZ12SKEW CS-TZ15SKEW CS-TZ18SKEW <Top View> <Side View> <Front View> <Side View> Air intake direction Left piping Air outlet Left piping hole direction hole <Remote Control> <Bottom View> <Rear View> <Remote Control Holder> Liquid side Gas side Relative position between the indoor unit and the installation plate <Front View>...
  • Page 24 6.1.2 CS-TZ24SKEW <Top View> <Side View> <Front View> <Side View> Air intake direction Left piping 1070 Left piping Air outlet hole hole direction <Remote Control> <Bottom View> <Rear View> Gas side Liquid side <Remote Control Holder> (41~61) Relative position between the indoor unit and the installation plate <Front View> Installation 10.5 plate...

  • Page 25: Outdoor Unit

    Outdoor Unit 6.2.1 CU-TZ9SKE CU-TZ12SKE <Top View> Space necessary for installation 67.6 (104.7) 570.3 104.9 60.5 10 cm 10 cm 100 cm 2-way valve at Liquid side Anchor Bolt Pitch (High Pressure) 320 x 570 3-way valve at Gas side (Low Pressure) <Side View>...
  • Page 26 6.2.3 CU-TZ24SKE Space necessary for <Top View> installation (131) 27.5 10mm 10mm 100mm Anchor Bolt Pitch 360 × 613 <Side View> <Side View> <Front View> Unit : mm 3-way valve at Gas side (Low Pressure) 2-way valve at Liquid side (High Pressure)

  • Page 27: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram CU-TZ9SKE CU-TZ12SKE CU-TZ15SKE 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 4-WAYS VALVE 3-WAY MUFFLER VALVE...

  • Page 28: Cu-Tz18Ske

    CU-TZ18SKE INDOOR OUTDOOR LIQUID EXPANSION SIDE ACCUMULATOR VALVE STRAINER 2-WAY PROCESS VALVE TUBE TEMP. PIPE SENSOR TEMP. CONDENSER INTAKE SENSOR 2 TEMP. SENSOR PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) SIDE DISCHARGE 4-WAYS VALVE 3-WAY MUFFLER VALVE TANK SENSOR COMPRESSOR...

  • Page 29: Cu-Tz24Ske

    CU-TZ24SKE INDOOR OUTDOOR LIQUID EXPANSION SIDE VALVE RECEIVER STRAINER STRAINER 2-WAY PROCESS VALVE TUBE TEMP. PIPE SENSOR TEMP. CONDENSER INTAKE SENSOR 2 TEMP. SENSOR PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) SIDE DISCHARGE 4-WAYS VALVE 3-WAY MUFFLER VALVE TANK SENSOR...

  • Page 30: Block Diagram

    8. Block Diagram Outdoor 8.1.1 CU-TZ9SKE...
  • Page 31 8.1.2 CU-TZ12SKE...
  • Page 32 8.1.3 CU-TZ15SKE...
  • Page 33 8.1.4 CU-TZ18SKE...
  • Page 34 8.1.5 CU-TZ24SKE NOISE FILTER...

  • Page 35: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit 9.1.1 CS-TZ9SKEW CS-TZ12SKEW CS-TZ15SKEW CS-TZ18SKEW TERMINAL SW01 FUSE301 BOARD AC306 T3.15A L250V (BLK) AC303 (WHT) NOISE FILTER CIRCUIT AC304 (RED) TEMP. FUSE RECTIFICATION UP DOWN 102ºC (3A) CIRCUIT LOUVER MOTOR G301 (GRN) COMMUNICATION CIRCUIT GROUNDING PIPING TEMP.
  • Page 36 9.1.2 CS-TZ24SKEW TERMINAL SW01 FUSE301 BOARD AC306 T3.15A L250V (BLK) AC303 (WHT) NOISE FILTER CIRCUIT AC304 (RED) UP DOWN LOUVER MOTOR TEMP. FUSE RECTIFICATION 102ºC (3A) CIRCUIT G301 (GRN) COMMUNICATION LEFT RIGHT CIRCUIT LOUVER MOTOR GROUNDING TERMINAL CN-FM PIPING TEMP. SENSOR 2 (THERMISTOR) (WHT) EVAPORATOR t°...

  • Page 37: Outdoor Unit

    Outdoor Unit 9.2.1 CU-TZ9SKE REMARKS YELLOW (YEL) BLACK; (BLK) WHITE; (WHT) SINGLE PHASE TO INDOOR UNIT POWER SUPPLY YELLOW; (YLW) (BLK) (WHT) (RED) ORANGE; (ORG) YELLOW/GREEN; (YLW/GRN) BLUE (BLU) RED (RED) BLUE; (BLU) (TRADEMARK) REACTOR TERMINAL RED; (RED) BOARD (BLK) (WHT) (RED) COMPRESSOR TERMINAL...
  • Page 38 9.2.2 CU-TZ12SKE REMARKS YELLOW (YEL) BLACK; (BLK) WHITE; (WHT) SINGLE PHASE TO INDOOR UNIT POWER SUPPLY YELLOW; (YLW) (BLK) (WHT) (RED) ORANGE; (ORG) YELLOW/GREEN; (YLW/GRN) BLUE (BLU) RED (RED) BLUE; (BLU) (TRADEMARK) REACTOR TERMINAL RED; (RED) BOARD (BLK) (WHT) (RED) COMPRESSOR TERMINAL BROWN;...
  • Page 39 9.2.3 CU-TZ15SKE REMARKS YELLOW (YEL) BLACK; (BLK) WHITE; (WHT) SINGLE PHASE TO INDOOR UNIT POWER SUPPLY YELLOW; (YLW) (BLK) (WHT) (RED) ORANGE; (ORG) YELLOW/GREEN; (YLW/GRN) BLUE (BLU) RED (RED) BLUE; (BLU) (TRADEMARK) REACTOR TERMINAL RED; (RED) (BLK) (WHT) (RED) BOARD COMPRESSOR TERMINAL BROWN;...
  • Page 40 9.2.4 CU-TZ18SKE REMARKS YELLOW (YEL) BLACK; (BLK) WHITE; (WHT) YELLOW; (YLW) SINGLE PHASE TO INDOOR UNIT ORANGE; (ORG) POWER SUPPLY (BLK) (WHT) (RED) YELLOW/GREEN; (YLW/GRN) BLUE (BLU) RED (RED) BLUE; (BLU) (TRADEMARK) RED; (RED) COMPRESSOR TERMINAL REACTOR BROWN; (BRW) TERMINAL THE PARENTHESIZED LETTERS IS BOARD GREEN;...
  • Page 41 9.2.5 CU-TZ24SKE YELLOW (YEL) REMARKS : BLUE : BLACK BLUE (BLU) RED (RED) REACTOR REACTOR WHT : WHITE RED : RED (TRADEMARK) YLW : YELLOW COMPRESSOR TERMINAL GRY : GRAY YLW/ THE PARENTHESIZED LETTERS IS GRN : GREEN INDICATED ON TERMINAL COVER ORG : ORANGE TERMINAL L1-I...

  • Page 42: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit 10.1.1 CS-TZ9SKEW CS-TZ12SKEW CS-TZ15SKEW CS-TZ18SKEW FUSE1 TERMINAL 500mA SW01 FUSE301 BOARD AC306 T3.15A L250V (BLK) AC303 0.1u NOISE FILTER (WHT) 1000p 1000p 0.1u CIRCUIT AC304 (RED) TEMP. FUSE RECTIFICATION 102ºC (3A) CIRCUIT CN-RMT...
  • Page 43 10.1.2 CS-TZ24SKEW FUSE1 TERMINAL 500mA SW01 FUSE301 BOARD AC306 T3.15A L250V (BLK) AC303 0.1u (WHT) NOISE FILTER 1000p 1000p 0.1u CIRCUIT AC304 (RED) TEMP. FUSE RECTIFICATION 102ºC (3A) CIRCUIT CN-RMT (WHT) G301 (GRN) COMMUNICATION CIRCUIT UP DOWN GROUNDING LOUVER MOTOR TERMINAL CN-FM (WHT)

  • Page 44: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 CU-TZ9SKE SINGLE PHASE TO INDOOR UNIT POWER SUPPLY (BLK) (WHT) (RED) REACTOR TERMINAL (BLK) (WHT) (RED) BOARD RAT2 RAT1 (GRY) (GRY) 15.8k CN-TH FUSE104 OUTDOOR AIR TEMP. (WHT) (15A 250V) SENSOR (THERMISTOR) DATA t° (RED) t° PIPING TEMP.
  • Page 45 10.2.2 CU-TZ12SKE SINGLE PHASE TO INDOOR UNIT POWER SUPPLY (BLK) (WHT) (RED) REACTOR TERMINAL BOARD (BLK) (WHT) (RED) RAT2 RAT1 (GRY) (GRY) 15.8k 15.0k FUSE104 (15A 250V) CN-TH OUTDOOR AIR TEMP. (WHT) SENSOR (THERMISTOR) DATA (RED) t° t° PIPING TEMP. SENSOR COMMUNICATION CN-TANK NOISE...
  • Page 46 10.2.3 CU-TZ15SKE SINGLE PHASE TO INDOOR UNIT POWER SUPPLY (BLK) (WHT) (RED) REACTOR TERMINAL BOARD (BLK) (WHT) (RED) RAT2 RAT1 (GRY) (GRY) 15.8k 15.0k FUSE104 (15A 250V) CN-TH OUTDOOR AIR TEMP. DATA (WHT) SENSOR (THERMISTOR) (RED) t° t° PIPING TEMP. SENSOR CN-TANK (THERMISTOR) (WHT)
  • Page 47 10.2.4 CU-TZ18SKE SINGLE PHASE TO INDOOR UNIT POWER SUPPLY (BLK) (WHT) (RED) REACTOR TERMINAL (BLK) (WHT) (RED) BOARD RAT2 RAT1 ELECTRONIC CONTROLLER (GRY) (GRY) 15.8k 15.0k DATA (RED) 220u COMMUNICATION CIRCUIT OUTDOOR AIR TEMP. CN-TH1 SENSOR (THERMISTOR) (WHT) 1 t° t°...
  • Page 48 10.2.5 CU-TZ24SKE REACTOR REACTOR YLW/ TERMINAL L1-I L2-I L1-O L2-O (RED) BOARD (GRAY) (GRAY) (BLACK) (BLACK) ACL1 CN-BLK AC-BLK (BLUE) (GRN) (BLK) (BLK) (BLACK) (YELLOW) FUSE3 NOISE FILTER COMPRESSOR CN-WHT AC-WHT (25A 250V) ACN1 CIRCUIT (WHT) (WHITE) (WHT) TERMINAL CN-FM BOARD (WHITE) COM3...

  • Page 49: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC303 AC304 AC306 CN-FM CN-CNT CN-STM2 (TZ24SKEW only) CN-STM1 CN-RMT CN-DISP CN-TH JP1 (Random Auto Restart enable/disable)
  • Page 50 11.1.2 Indicator Printed Circuit Board LED206 LED202 LED204 LED207 LED201 LED203 LED205 CN-DISP...

  • Page 51: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 CU-TZ9SKE POWER TRANSISTOR (IPM) CN-HOT CN-TH CN-TANK CN-STM CN-MTR1 CURRENT CN-MTR2 TRANSFORMER (CT) AC-BLK AC-WHT DATA...
  • Page 52 11.2.2 CU-TZ12SKE POWER TRANSISTOR (IPM) CN-HOT CN-STM CN-TH CN-TANK CURRENT TRANSFORMER CN-MTR1 (CT) CN-MTR2 AC-BLK DATA AC-WHT...
  • Page 53 11.2.3 CU-TZ15SKE POWER TRANSISTOR (IPM) CN-HOT CURRENT TRANSFORMER CN-TANK (CT) CN-TH AC-BLK CN-MTR1 CN-MTR2 CN-STM AC-WHT DATA...
  • Page 54 11.2.4 CU-TZ18SKE POWER TRANSISTOR (IPM) CURRENT CN-TANK TRANSFORMER CN-MTR1 (CT) CN-TH1 CN-HOT CN-STM AC-WHT CN-MTR2 AC-BLK DATA...
  • Page 55 11.2.5 CU-TZ24SKE POWER TRANSISTOR (IPM) AC-WHT CURRENT TRANSFORMER (CT) AC-BLK CN-HOT CN-FM CN-COM CN-TANK CN-EV CN-TH1...
  • Page 56 11.2.6 Noise Filter Printed Circuit Board 11.2.6.1 CU-TZ24SKE CN-DCFM CN-COM CN-FM1...

  • Page 57: Installation Instruction

    12. Installation Instruction 12.1 Select the Best Location 12.1.3 Indoor/Outdoor Unit Installation 12.1.1 Indoor Unit 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 WARNING up drain hose (Front side)

  • 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 Indoor unit More than 2 screw Installation plate 1 241.5 mm 241.5 mm PIPE...
  • Page 59 12.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping Wall Indoor Outdoor Insert the piping sleeve to the hole. Fix the bushing to the sleeve. 15 mm Approx. 5 - 7 mm Cut the sleeve until it extrudes about 15 mm from the wall.

  • Page 60: Indoor Unit Installation

    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 Exchange the drain hose and the cap Rear view for left piping installation Connection cable Drain hose Piping More than 950 mm (1.0 ~ 2.0HP) Connection cable or More than 1150 mm (2.5HP) Drain hose Drain hose Drain cap Adjust the piping slightly downwards.
  • Page 62 Secure the connection cable onto the control board with the holder. Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively. Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason. Terminal Board Tape Earth Wire...

  • 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, screws or nails.

  • Page 64: Evacuation Of The Equipment

    AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.3.3 Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation. There is no extra refrigerant in the outdoor unit for air purging.

  • Page 65: Connect The Cable To The Outdoor Unit

    12.3.4 Connect the Cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Cable connection to the power supply through Isolating Devices (Disconnecting means). Connect approved type polychloroprene sheathed power supply cord 3 x 1.5 mm (1.0 ~ 1.75HP), 3 x 2.5 mm (2.0 ~ 2.5HP) type designation 60245 IEC 57 or heavier cord to the terminal board, and...

  • Page 66: Piping Insulation

    12.3.5 Piping Insulation Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above.
  • Page 67 12.3.6 How to Take Out Front Grille Please follow the steps below to take out front grille if necessary such as when servicing. Set the vertical airflow direction louvers to the horizontal position. Remove the 2 caps (1.0 ~ 2.0HP) or 3 caps (2.5HP) on the front grille as shown in the illustration at right, and then remove the 3 (1.0 ~ 2.0HP) or 4 (2.5HP) mounting screws.
  • Page 68 12.3.10 Installation of Air Purifying Filter Air purifying filter 8 Open the front panel. Remove the air filters. Put the Air purifying filter into place as shown in illustration at right. Air fi lter...

  • Page 69: 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 70 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 71: 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 72 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 73 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 74 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 75: 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 76: 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 77: 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 78 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 79 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 80 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 81: 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 82 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 83 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 84 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 85 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 86 (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 87: 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 88 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 89: 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 90: 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 91: Outdoor Fan Motor Operation

    [Heating]  According to indoor pipe temperature, automatic heating fan speed is determined as follows. RPM Increased RPM Maintain RPM Reduced Indoor Pipe Temp. B. Feedback control  Immediately after the fan motor started, feedback control is performed once every second. ...

  • Page 92: 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 93: Timer Control

    14.4.2 Horizontal Airflow (CS-TZ24SKEW) Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. It does not swing during fan motor stop. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.

  • Page 94: Sleep Mode Operation

    14.6 Sleep Mode Operation SLEEP To maximise comfort while sleeping (CANCEL)  This operation provides you with a comfortable environment while sleeping. It will automatically adjust the sleep pattern temperature during the activation period.  The indoor unit indicator will dim when this operation is activated. This is not applicable if the indicator brightness has been manually dimmed.

  • Page 95: Quiet Operation (Heating)

    14.10 Quiet Operation (Heating) A. Purpose To provide quiet heating operation compare to normal operation. B. Control condition a. Quiet operation start condition When “POWERFUL/QUIET” button at remote control is pressed. b. Quiet operation stop condition When one of the following conditions is satisfied, quiet operation stops: a.

  • Page 96: 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 97: 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 98: 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 99 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 0.75A and 0.95A (TZ9/12/15SK), 1.38A and 1.65A (TZ18SK), 1.88A and 2.85A (Cooling), 2.85A and 3.57A (Heating) (TZ24SK).

  • Page 100: 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 101: Odor Cut Control

    16.2.6 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 102: 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 103: 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 104: Remote Control Button

    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 105: 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 106 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 107: Breakdown Self Diagnosis Function

    18.2 Breakdown Self Diagnosis Function 18.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  When the latest abnormality code on the main Once abnormality has occurred during operation, unit and code transmitted from the remote the unit will stop its operation, and Timer LED controller are matched, power LED will light blinks.

  • Page 108: 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 109 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 110: 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 111 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 112 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 113 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 114 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 115 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 116 18.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 117 18.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 118 18.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 119 18.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 120 18.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 121 18.4.12 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 122 18.4.13 H34 (Outdoor Heat Sink Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 123 18.4.14 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 124 18.4.15 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...

  • Page 125: Troubleshooting

    18.4.16 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) (TZ9/12/15/18SKE) 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 126 18.4.17 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) (TZ24SKE) 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 127 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 128 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 129 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 130 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 131 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 132 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 133 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 134 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 135 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 136 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 137 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 138 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 139: 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. 19.1 CS-TZ9SKEW CS-TZ12SKEW CS-TZ15SKEW CS-TZ18SKEW 19.1.1...
  • Page 140 Remove earth wires. Detach all connectors as labelled from the electronic controller. Then pull out the electronic controller gently. AC303 (WHT) Detach lead wires CN-FM AC306 (Black), CN-CNT and AC304 (Red) from the terminal board. CN-STM1 CN-RMT CN-TH Remove screw to remove the terminal board complete.
  • Page 141 19.1.1.4 To Remove Control Board Figure 6 19.1.1.5 To Remove Cross Flow Fan and Indoor Fan Motor Figure 7 Figure 8...
  • Page 142 Figure 9 Figure 10...

  • Page 143: Cs-Tz24Skew

    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. 19.2 CS-TZ24SKEW 19.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 19.2.1.1 To Remove Front Grille...
  • Page 144 Remove earth wires. Detach all connectors as labelled from the electronic controller. Then pull out the electronic controller gently. AC303 (WHT) Detach lead wires CN-FM AC306 (Black), CN-CNT and AC304 (Red) from the terminal board. CN-STM2 CN-STM1 CN-RMT CN-TH Remove screw to remove the terminal board complete.

  • Page 145: To Remove Cross Flow Fan And Indoor Fan Motor

    19.2.1.4 To Remove Control Board Figure 6 19.2.1.5 To Remove Cross Flow Fan and Indoor Fan Motor Figure 7 Holdfast Remove the screw from the Remove the bearing by pulling it evaporator. out gently. Figure 8...
  • Page 146 Push the holdfast to the left and lift up the evaporator. Fan motor can be removed after the removal of cross flow fan. Remove the cross flow fan from the unit by Reminder: To reinstall the fan motor, adjust Evaporator pulling it to the left and downward.

  • Page 147: Outdoor Electronic Controller Removal Procedure

    19.3 Outdoor Electronic Controller Removal Procedure 19.3.1 CU-TZ9SKE CU-TZ12SKE 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 148 19.3.2 CU-TZ15SKE CU-TZ18SKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Fig. 4 Remove the 8 screws of the Front Panel. Fig. 2 Remove the screw of the Terminal Board Fig.
  • Page 149 19.3.3 CU-TZ24SKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 8 screws of the Top Panel. Remove the Control Board. Fig. 4 Remove the 6 screws of the Electronic Controller. Fig. 1 Remove the 8 screws of the Front Panel. Fig.

  • Page 150: Technical Data

    Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 1.1.1 CS-TZ9SKEW/CU-TZ9SKE Indoor (°C) Outdoor DB (°C) 2646 2286 491 2658 2301 489 2669 2267 491 2593 2281 572 2919 2462 391 2721 2407 518 2500 2338 670 2919 1840 497 2872 1838 540 2886 1834 526 3002 1880 455 3215 2000 374 2982 1890 512 2659 1771 673 15.7 2363 2340 526 2381 2254 503 2357 2233 550 2372 2348 536 2630 2604 404 2439 2306 523 2158 2136 670...
  • Page 151 1.1.4 CS-TZ18SKEW/CU-TZ18SKE Indoor (°C) Outdoor DB (°C) 5291 3510 1188 5317 3532 1182 5338 3481 1188 5186 3501 1383 5838 3780 944 5442 3695 1253 4750 3409 1620 5837 2824 1202 5744 2821 1307 5772 2815 1271 6003 2887 1101 6430 3070 904 5963 2901 1238 5317 2720 1627 15.7 4727 4679 1272 4762 3460 1215 4714 3428 1330 4743 4696 1297 5260 5207 976 4878 3540 1265 4315 3391 1620 18.4 5226 2801 1189 5263 2796 1150 5299 2814 1189 5099 2765 1355 5590 2927 952 5322 2889 1255 4784 2709 1622 13.3 4198 4156 1454 4160 3208 1216 4490 3406 1272 4357 3287 1328 4948 4899 997 4493 3453 1270 4009 3235 1616...

  • Page 152: Heat Mode Performance Data

    Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C Voltage: 230V 1.2.1 CS-TZ9SKEW/CU-TZ9SKE Indoor (°C) Outdoor WB (°C) 1817 2458 1057 2885 3082 3281 1820 2700 1050 2970 1000 3300 3413 1715 2785 1005...

  • Page 153: 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 21.1.1 CS-TZ9SKEW CU-TZ9SKE 22.00 21.00 20.00 19.00 18.00 17.00 16.00...
  • Page 154 21.1.2 CS-TZ12SKEW CU-TZ12SKE 18.00 17.00 16.00 15.00 14.00 13.00 12.00 Outdoor Air Temperature (°C) 5.20 4.80 4.40 4.00 3.60 3.20 2.80 2.40 2.00 Outdoor Air Temperature (°C) 1.30 1.20 1.10 1.00 0.90 0.80 0.70 0.60 Outdoor Air Temperature (°C)
  • Page 155 21.1.3 CS-TZ15SKEW CU-TZ15SKE 14.00 13.50 13.00 12.50 12.00 11.50 Outdoor Air Temperature (°C) 7.50 6.50 5.50 4.50 3.50 2.50 1.50 Outdoor Air Temperature (°C) 1.10 1.00 0.90 0.80 0.70 0.60 Outdoor Air Temperature (°C)
  • Page 156 21.1.4 CS-TZ18SKEW CU-TZ18SKE 18.0 17.0 16.0 15.0 14.0 13.0 12.0 11.0 10.0 Outdoor Air Temperature (°C) 9.00 8.00 7.00 6.00 5.00 4.00 3.00 2.00 Outdoor Air Temperature (°C) 1.10 1.00 0.90 0.80 0.70 Outdoor Air Temperature (°C)
  • Page 157 21.1.5 CS-TZ24SKEW CU-TZ24SKE 14.0 13.5 13.0 12.5 12.0 11.5 11.0 10.5 10.0 Outdoor Air Temperature (°C) 15.00 14.00 13.00 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 4.00 Outdoor Air Temperature (°C) 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50...

  • Page 158: 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-TZ9SKEW CU-TZ9SKE Outdoor Air Temperature (°C) 4.50 4.00 3.50 3.00 2.50...
  • Page 159 21.2.2 CS-TZ12SKEW CU-TZ12SKE Outdoor Air Temperature (°C) 5.10 4.90 4.70 4.50 4.30 4.10 3.90 3.70 3.50 3.30 3.10 2.90 2.70 Outdoor Air Temperature (°C) 3.00 2.80 2.60 2.40 2.20 2.00 1.80 1.60 1.40 1.20 Outdoor Air Temperature (°C)
  • Page 160 21.2.3 CS-TZ15SKEW CU-TZ15SKE Outdoor Air Temperature (°C) 7.00 6.50 6.00 5.50 5.00 4.50 4.00 Outdoor Air Temperature (°C) 3.60 3.40 3.20 3.00 2.80 2.60 2.40 2.20 2.00 1.80 Outdoor Air Temperature (°C)
  • Page 161 21.2.4 CS-TZ18SKEW CU-TZ18SKE 70.00 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) 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 4.00 3.00 -16 -14 -12 -10 Outdoor Air Temperature (°C) 5.80 5.30 4.80 4.30...
  • Page 162 21.2.5 CS-TZ24SKEW CU-TZ24SKE 55.00 50.00 45.00 40.00 35.00 30.00 25.00 Outdoor Air Temperature (°C) 16.00 15.00 14.00 13.00 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 Outdoor Air Temperature (°C) 3.80 3.60 3.40 3.20 3.00 2.80 2.60 2.40...

  • Page 163: 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-TZ9SKEW CU-TZ9SKE CS-TZ12SKEW CU-TZ12SKE CS-TZ15SKEW CU-TZ15SKE 1.02 1.00 0.98 0.96 0.94 0.92 10 11 12 13 14 15 16 Pipe Length (m) 1.04...
  • Page 164 21.3.2 CS-TZ18SKEW CU-TZ18SKE 1.03 1.01 0.99 0.97 0.95 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Pipe Length (m) 1.01 1.00 0.99 0.98 0.97 0.96 0.95 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Pipe Length (m) Note: The graphs show the factor after added right amount of additional refrigerant.
  • Page 165 21.3.3 CS-TZ24SKEW CU-TZ24SKE 1.03 1.01 0.99 0.97 0.95 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132 Pipe Length (m) 1.01 1.00 0.99 0.98 0.97 0.96 0.95 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132 Pipe Length (m) Note: The graphs show the factor after added right amount of additional refrigerant.

  • Page 166: Exploded View And Replacement Parts List

    22. Exploded View and Replacement Parts List 22.1 Indoor Unit 22.1.1 CS-TZ9SKEW CS-TZ12SKEW CS-TZ15SKEW CS-TZ18SKEW 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 167 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-TZ9SKEW CS-TZ12SKEW REMARK CHASSIS COMPLETE ACXD50C00200 ←  FAN MOTOR L6CBYYYL0037 ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← PARTICULAR PIECE CWD933067B ← EVAPORATOR CWB30C5037...
  • Page 168 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-TZ15SKEW CS-TZ18SKEW REMARK CHASSIS COMPLETE ACXD50C00200 ←  FAN MOTOR L6CBYYYL0037 ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← BEARING ASSY CWH64K1010 ← SCREW - CROSS-FLOW FAN CWH551146 ← PARTICULAR PIECE CWD933067B ← EVAPORATOR CWB30C4660 ACXB30C01130 FLARE NUT (LIQUID) CWT251030...
  • Page 169 22.1.2 CS-TZ24SKEW 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 170 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-TZ24SKEW REMARK CHASSIS COMPLETE ACXD50C00240 FAN MOTOR L6CBYYYL0039 CROSS-FLOW FAN COMPLETE CWH02C1077 BEARING ASSY CWH64K1010 SCREW - CROSS-FLOW FAN CWH551146 PARTICULAR PIECE CWD933067B EVAPORATOR ACXB30C01660 FLARE NUT (LIQUID) CWT251030 FLARE NUT (GAS) CWT251033 CONTROL BOARD CASING ACXH10-00510...

  • Page 171: Outdoor Unit

    22.2 Outdoor Unit 22.2.1 CU-TZ9SKE 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 172 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ9SKE REMARK CHASSIS COMPLETE ACXD52K00150 FAN MOTOR BRACKET CWD541157 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR L6CAYYYL0064 SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASSY CWH03K1100 NUT - PROPELLER FAN CWH56053J COMPRESSOR 9SS072XAC21...
  • Page 173 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ9SKE REMARK INSTALLATION INSTRUCTION ACXF60-02100 INSTALLATION INSTRUCTION ACXF60-02110 INSTALLATION INSTRUCTION ACXF60-02120 INSTALLATION INSTRUCTION ACXF60-02130 (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).  “O” marked parts are recommended to be kept in stock.
  • Page 174 22.2.2 CU-TZ12SKE 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 175 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ12SKE REMARK CHASSIS COMPLETE CWD52K1399 SOUND PROOF MATERIAL (TOP) CWG302314 FAN MOTOR BRACKET CWD541157 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR ARS6411AC SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASSY CWH03K1100 NUT - PROPELLER FAN CWH56053J...
  • Page 176 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ12SKE REMARK INSTALLATION INSTRUCTION ACXF60-02090 INSTALLATION INSTRUCTION ACXF60-02100 INSTALLATION INSTRUCTION ACXF60-02110 INSTALLATION INSTRUCTION ACXF60-02120 INSTALLATION INSTRUCTION ACXF60-02130 (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).  “O” marked parts are recommended to be kept in stock.
  • Page 177 22.2.3 CU-TZ15SKE CU-TZ18SKE TZ18SKE 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 178 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ15SKE CU-TZ18SKE REMARK CHASSIS COMPLETE CWD52K1277 ←  SOUND PROOF MATERIAL CWG302719 CWG302630 FAN MOTOR BRACKET CWD541167 ← SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR ARS6411AC ← SCREW - FAN MOTOR MOUNT CWH55252J ←...
  • Page 179 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ15SKE CU-TZ18SKE REMARK INSTALLATION INSTRUCTION ACXF60-02080 ←  INSTALLATION INSTRUCTION ACXF60-02090 ←  INSTALLATION INSTRUCTION ACXF60-02100 ←  INSTALLATION INSTRUCTION ACXF60-02110 ←  INSTALLATION INSTRUCTION ACXF60-02120 ←  INSTALLATION INSTRUCTION ACXF60-02130 ←  (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). ...
  • Page 180 22.2.4 CU-TZ24SKE 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 181 CABINET TOP PLATE CWE031083A CONTROL BOARD COVER - COMPLETE CWH13C1185 STRAINER CWB111063 RECEIVER CWB14017 SOUND PROOF MATERIAL CWG302951 SOUND PROOF MATERIAL CWG302246 ELECTRONIC CONTROLLER - NF CWA748207 BAG - COMPLETE CWG87C900 PANASONIC BADGE CWE373439 OPERATING INSTRUCTION ACXF55-01490 OPERATING INSTRUCTION ACXF55-01500...
  • Page 182 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-TZ24SKE REMARK INSTALLATION INSTRUCTION ACXF60-02040 INSTALLATION INSTRUCTION ACXF60-02050 INSTALLATION INSTRUCTION ACXF60-02060 INSTALLATION INSTRUCTION ACXF60-02070 INSTALLATION INSTRUCTION ACXF60-02080 INSTALLATION INSTRUCTION ACXF60-02090 INSTALLATION INSTRUCTION ACXF60-02100 INSTALLATION INSTRUCTION ACXF60-02110 INSTALLATION INSTRUCTION ACXF60-02120 INSTALLATION INSTRUCTION ACXF60-02130 (NOTE) ...

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