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Panasonic CS-CZ12SKE Service Manual

Other manuals for CS-CZ12SKE: Operating Instructions Manual

Summary of CS-CZ12SKE

  • Page 1

    © panasonic corporation 2016 order no: papamy1607084ce power / deice timer heat indoor unit outdoor unit cs-cz9ske cs-cz12ske cu-cz9ske cu-cz12ske destination n. Europe caution r32 refrigerant – this air conditioner contains and operates with refrigerant r32. This product must only be installed or s...

  • Page 2: Table of Contents

    2 table of contents page page 1. Safety precautions ............................................. 3 2. Precaution for using r32 refrigerant .............. 6 3. Specifications ................................................... 10 4. Features .............................................................

  • Page 3: 1. Safety Precautions

    3 caution warning warning 1. Safety precautions  read the following “safety precautions” carefully before perform any servicing.  electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...

  • Page 4

    4 caution warning 13. Do not perform flare connection inside a building or dwelling or room, when joining the heat exchanger of indoor unit with interconnecting piping. Refrigerant connection inside a building or dwelling or room must be made by brazing or welding. Joint connection of indoor unit by...

  • Page 5

    5 caution 7. 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. 8. Power supply connection to the room air conditioner. Use pow...

  • Page 6

    6 warning caution 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: 1. Since the working pressure is higher than that of refrigerant r22 models, some o...

  • Page 7

    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...

  • Page 8

    8 caution 7. 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...

  • Page 9

    9 caution 11. 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. 12. Recovery when removing refrigerant fro...

  • Page 10: 3. Specifications

    10 3. Specifications model indoor cs-cz9ske cs-cz12ske outdoor cu-cz9ske cu-cz12ske performance test condition eurovent eurovent power supply phase, hz single, 50 single, 50 v 230 230 min. Mid. Max. Min. Mid. Max. Cooling capacity kw 0.85 2.50 3.00 0.85 3.50 4.00 btu/h 2900 8530 10200 2900 11900 136...

  • Page 11

    11 model indoor cs-cz9ske cs-cz12ske outdoor cu-cz9ske cu-cz12ske compressor type hermetic motor / rotary hermetic motor / rotary motor type brushless (4-poles) brushless (4-poles) output power w 900 900 indoor fan type cross-flow fan cross-flow fan material asg20k1 asg20k1 motor type dc / transisto...

  • Page 12

    12 model indoor cs-cz9ske cs-cz12ske outdoor cu-cz9ske cu-cz12ske weight net (i/d / o/d) kg (lb) 8 (18) / 36 (79) 8 (18) / 36 (79) stacking no. (cs / cu / cz) actual stacking condition (12 / 6 / -) actual stacking condition (12 / 6 / -) piping pipe diameter (liquid / gas) mm (inch) 6.35 (1/4) / 9.52...

  • Page 13: 4. Features

    13 4. Features  inverter technology o wider output power range o energy saving o more precise temperature control  environment protection o non-ozone depletion substances refrigerant (r32)  long installation piping o long piping up to 20 meters  easy to use remote control  quality improvement o...

  • Page 14

    14 5. Location of controls and components 5.1 indoor unit power timer power/ deice (green/ blue) (orange) timer +8/15°c heat (green) aluminium fin auto off/on button • use when remote control is misplaced or malfunction occurs. Air filters front panel remote control receiver vertical airflow directi...

  • Page 15: 6. Dimensions

    15 6. Dimensions 6.1 indoor unit & remote control 850 41-61 590 16.4 264.6 unit: mm b a c pipe hole center pipe hole center 128mm to pipe hole center 128mm to pipe hole center 496.6 128 228 228 128 right piping hole left piping hole installation plate indoor unit external dimensions line 425 425 144...

  • Page 16

    16 6.2 outdoor unit anchor bolt pitch 330 × 540 space necessary for installation 100mm 100mm 100mm unit : mm 22 (124) (53.4) 330 62 2 167 97 32 540 160 824 68.5 37 299 3-way valve at gas side (low pressure) 2-way valve at liquid side (high pressure) 69 61 ( 23 ).

  • Page 17

    17 7. Refrigeration cycle diagram indoor outdoor intake air temp. Sensor intake temp. Sensor comp. Temp. Sensor pipe temp. Sensor pipe temp. Sensor liquid side 2-way valve 3-way valve gas side cooling heat exchanger (evaporator) heating compressor 4-ways valve heat exchanger (condenser) muffler muff...

  • Page 18: 8. Block Diagram

    18 8. Block diagram ms 3~ ms 3~ m ic19 fuse101 fuse103 fuse 301 tempera t ure fuse fuse104 react o r c103 ct101 ptc ntc th1 u ptc1 r y -pwr r y -ac 4-w a ys va lv e u 1 2 l n single phase power suppl y (indoor unit) (outdoor unit) noise filter sc sc 3.

  • Page 19

    19 9. Wiring connection diagram 9.1 indoor unit up down louver motor cn-stm1 (wht) br 1 5 1 5 m r o y p cn-cnt (wht) 5 1 piping temp. Sensor (thermistor) suction temp. Sensor (thermistor) 4 1 cn-th (red) cn-rmt (wht) 4 1 cn-disp 1 (ylw) cn-disp (wht) electronic controller (display & receiver) 1 7 1 ...

  • Page 20

    20 9.2 outdoor unit remarks: black: (blk) blue: (blu) white: (wht) red: (red) yellow: (ylw) gray: (gry) green: (grn) brown: (brw) orange: (org) yellow/green: (ylw/grn) red (red) (trademark) blue (blu) yellow (yel) compressor terminal the parenthesized letters is indicated on terminal cover. Outdoor ...

  • Page 21

    21 10. Electronic circuit diagram 10.1 indoor unit up down louver motor cn-stm1 (wht) br 1 5 1 5 m r o y p cn-cnt (wht) 5 1 piping temp. Sensor (thermistor) (20k, 3950) suction temp. Sensor (thermistor) (15k, 3950) 4 1 cn-th (red) cn-rmt (wht) 4 1 cn-disp 1 (ylw) cn-disp (wht) electronic controller ...

  • Page 22

    22 10.2 outdoor unit sensor (thermistor) characteristics 70 60 50 40 30 20 10 0 -10 0 10 temperature ( o c) resistance (kΩ) 20 30 40 50 1 2 1 2 outdoor air sensor outdoor heat exchanger sensor compressor temp. Sensor (thermistor) characteristics 70 60 50 40 30 20 10 0 20 40 60 temperature ( o c) res...

  • Page 23: 11.  Printed Circuit Board

    23 11. Printed circuit board 11.1 indoor unit 11.1.1 main printed circuit board cn-fm cn-stm1 cn-th cn-cnt cn-disp cn-rmt ac-306 ac303 g301 ac304 jp1 (random auto restart enable/disable).

  • Page 24

    24 11.1.2 indicator & receiver printed circuit board cn-disp led202 led201 led203.

  • Page 25

    25 11.2 outdoor unit 11.2.1 main printed circuit board cn-hot cn-stm cn-th1 cn-mtr2 cn-mtr1 cn-tank ac-blk fg1 data fg2 ac-wht rat1 rat2 power transistor (ipm) current transformer (ct) acn2 ht2.

  • Page 26

    26 12. Installation instruction 12.1 select the best location 12.1.1 indoor unit  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 near the unit.  there should not be any obstacles blocking the air circulation.  a...

  • Page 27

    27 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. 3 4 b a c wall wall wall installation plate 1 2 screw more than 1 more than 1 indoor unit 228 mm (1.0~1.5hp) 241.5 mm (2.0hp) 128 mm more than 2 for best strength...

  • Page 28

    28 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. Intake grille piping pull ou t the pip in g piping shock...

  • Page 29

    29 • how to pull the piping and drain hose out, in case of the embedded piping. • in case of left piping how to insert the connection cable and drain hose. Rear view for left piping installation drain cap drain hose adjust the piping slightly downwards. Drain hose connection cable pvc tube for drain...

  • Page 30

    30 connection cable indoor & outdoor connection cable escapement terminal board recommended length (mm) earth wire longer than others ac wires for safety reason holder indoor & outdoor connection cable outdoor unit tape recommended length (mm) a b c d 35 35 35 55 warning this equipment must be prope...

  • Page 31

    31 12.3 outdoor unit 12.3.1 install the outdoor unit  after selecting the best location, start installation to indoor/outdoor unit installation diagram. 1 fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 2 when installing at roof, please consider strong wind and...

  • Page 32

    32 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. ...

  • Page 33

    33 12.3.4 connect the cable to the outdoor unit 1 remove the control board cover from the unit by loosening the screw. 2 cable connection to the power supply through isolating devices (disconnecting means). O connect approved type polychloroprene sheathed power supply cord 3 x 1.5 mm 2 type designat...

  • Page 34

    34 12.3.6 outdoor unit drain water  water will drip from the base pan hole area during defrost function.  to avoid water dripping, do not stand or place objects at this area. Hole 12.3.7 check the drainage  open front panel and remove air filters. (drainage checking can be carried out without rem...

  • Page 35

    35 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. ...

  • Page 36

    36 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 u...

  • Page 37

    37 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 compr...

  • Page 38

    38 3. Torque wrenches (diameters 1/2, 5/8) in order to strengthen the compressive strength, the diameters of wrenches change depending on the flare nut sizes. Torque wrenches differences in torque wrenches r32 (common r410a) r22 1/2 (diameter × torque) 26 mm × 55 n•m (550 kgf•m) 24 mm × 55 n•m (550 ...

  • Page 39

    39 7. Hfc refrigerant_electric gas leakage tester r32 refrigerant is often used for other mixed refrigerant (r410a, r404a, r407c etc.). Therefore, the usage of existing hfc detectors is possible, but in order to detect more accurately, we recommend to use detectors specially set and adjusted for r32...

  • Page 40

    40 11. Tools used for refrigerant piping installations and services tools for r410a common with r32 possibility of usage for r22 1. Pipe cutters, reamers or scrapers ○ ○ 2. Flare tools (clutch type) ○ ○ 3. Torque wrench (1/4, 3/8) ○ ○ 4. Torque wrench (1/2, 5/8) ○ × 5. Manifold gauges・charging hoses...

  • Page 41

    41 13.4 new installation, relocation, repairing of refrigerant cycle system the procedures operation testing new installation relocation repairing refrigerant cycle pump down refrigerant recovery prevention of impurity leakage checking insertion of refrigerant • dismantling indoor / outdoor units • ...

  • Page 42

    42 13.5 piping installation of r32 13.5.1 pipe materials used and flaring copper pipes are used for refrigerant piping. Pipes which comply with jis regulations need to be used. Room air conditioners which use r410a and r32 have higher pressure; thus, using pipes which comply with the regulations is ...

  • Page 43

    43 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. Connect the charging ho...

  • Page 44

    44 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). 3. Connect the yellow float swi...

  • Page 45

    45 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 ...

  • Page 46

    46 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...

  • Page 47

    47 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 c...

  • Page 48

    48 2. Cylinder without adjustment valve 2 nd 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. Especiall...

  • Page 49

    49 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 outer flame (...

  • Page 50

    50 13.7.7 selection of brazing material use bag brazing material (silver solder) to increase the welding performance. Category jis standard number composition of ingredients (%) temperature (°c) tensile strength (reference) characteristics and applications ag cu zu cd ni p solidus liquidus brazing t...

  • Page 51

    51 13.7.10 checking of brazing (insert) points 1. No impurity on the brazing point if dirt or oil is attached on the brazing point, the brazing filler metal does not reach to junction, and it may cause poor welding. 2. Adequate gap space in the brazing point the advantage of capillary current situat...

  • Page 52

    52 (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...

  • Page 53

    53 13.8 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 o...

  • Page 54

    54 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 p...

  • Page 55: 14. Operation

    55 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 maintai...

  • Page 56

    56 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 seco...

  • Page 57

    57 ii auto fan speed [cooling, dry]  according to room temperature and setting temperature, indoor fan speed is determined automatically.  when set temperature is not achieved, the indoor fan will operate according to pattern below.  when set temperature achieved, the indoor fan speed will be fix...

  • Page 58

    58 14.4.1 vertical airflow operation mode vane angle (°) 1 2 3 4 5 cooling, fan auto usual (ventilation) 10 ~ 40 control with dew 10 ~ 40 manual usual (ventilation) 10 17.5 25 32.5 40 control with dew 10 17.5 25 32.5 40 dry auto usual 10 ~ 40 control with dew 10 ~ 40 manual usual 10 17.5 25 32.5 40 ...

  • Page 59

    59 14.5 timer control  there are 2 sets of on and off timer available to turn the unit on or off at different preset time.  if more than one timer had been set, the upcoming timer will be displayed and will activate in sequence. 14.5.1 on timer control  on timer 1 and on timer 2 can be set using ...

  • Page 60

    60 14.8 quiet operation (cooling mode/cooling area of dry mode) a. Purpose to provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition o when “powerful/quiet” button at remote control is pressed twice. O quiet will be shown on remote contro...

  • Page 61

    61 14.11 +8/15°c heat operation  +8/15°c heat operation provides heating at low setting temperature in unoccupied houses during winter for the purpose of protecting equipments or housing appliances which may be destroyed by the extreme cold weather.  this operation can be on by pressing the +8/15°...

  • Page 62: 15. Protection

    62 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 per...

  • Page 63

    63 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 min...

  • Page 64

    64 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.  compresso...

  • Page 65

    65 15.2.6 odor cut control  to reduce the odor released from the unit. O 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. O control content depends on compressor conditions: 1. ...

  • Page 66: 16. Servicing

    66 16. Servicing mode 16.1 auto off/on button 1 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. 2 test run operation...

  • Page 67

    67 4 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 sta...

  • Page 68

    68  auto restart enable/disable selection normal display mode transmit “enable or disable” code control disable control enable press sw to enter customer zone & press sw’s to choose function 10 1 press sw, special setting is immediately cancelled and normal mode starts. 2 if no sw is pressed for 30...

  • Page 69

    69  new deice judgement selection normal display mode press sw (t 0secs) when sw pressed continuously for t 5secs to enter service zone & press sw’s to choose function 60 transmit “no or yes” code switching = no switching = yes note: by default is new deice judgement. 16.2.2 reset (rc)  to clear a...

  • Page 70: 17. Troubleshooting

    70 17. Troubleshooting guide 17.1 refrigeration cycle system in order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a f...

  • Page 71

    71 17.2 relationship between the condition of the air conditioner and pressure and electric current condition of the air conditioner cooling mode heating mode low pressure high pressure electric current during operation low pressure high pressure electric current during operation insufficient refrig...

  • Page 72

    72 17.3 breakdown self diagnosis function 17.3.1 self diagnosis function (three digits alphanumeric code)  once abnormality has occurred during operation, the unit will stop its operation, and timer leds blink.  although timer led goes off when power supply is turned off, if the unit is operated u...

  • Page 73

    73 17.4 error codes table diagnosis display abnormality / protection control abnormality judgment protection operation problem check location h00 no memory of failure — normal operation — — h11 indoor/outdoor abnormal communication after operation for 1 minute indoor fan only operation can start by ...

  • Page 74

    74 diagnosis display abnormality / protection control abnormality judgment protection operation problem check location h41 abnormal wiring or piping connection — — wrong wiring and connecting pipe, expansion valve abnormality  check indoor/outdoor connection wire and connection pipe  expansion val...

  • Page 75

    75 17.5 self-diagnosis method 17.5.1 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 ...

  • Page 76

    76 17.5.2 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.  indo...

  • Page 77

    77 17.5.3 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 con...

  • Page 78

    78 17.5.4 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 connectio...

  • Page 79

    79 17.5.5 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 80

    80 17.5.6 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 > 2550rpm or malfunction caused  operation stops due to short circuit in...

  • Page 81

    81 17.5.7 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 conne...

  • Page 82

    82 17.5.8 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.  f...

  • Page 83

    83 17.5.9 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 84

    84 17.5.10 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 conn...

  • Page 85

    85 17.5.11 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 ...

  • Page 86

    86 17.5.12 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 ou...

  • Page 87

    87 17.5.13 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 co...

  • Page 88

    88 17.5.14 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.  fa...

  • Page 89

    89 17.5.15 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 connecto...

  • Page 90

    90 17.5.16 h97 (outdoor fan motor – dc motor mechanism locked) malfunction decision conditions  the rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor. Malfunction caused  operation stops due to short circuit inside the fan motor winding.  op...

  • Page 91

    91 17.5.17 h98 (error code stored in memory and no alarm is triggered / no timer led flashing) malfunction decision conditions  indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation.  phenomena: unit is stoppi...

  • Page 92

    92 17.5.18 h99 (indoor freeze prevention protection: cooling or soft dry) error code will not display (no timer led blinking) but store in eeprom malfunction decision conditions  freeze prevention control takes place (when indoor pipe temperature is lower than 2°c) malfunction caused  air short ci...

  • Page 93

    93 17.5.19 f11 (4-way valve abnormality) 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  indoor heat excha...

  • Page 94

    94 17.5.20 f17 (indoor standby units freezing abnormality) malfunction decision conditions  when the different between indoor intake air temperature and indoor pipe temperature is above 10°c or indoor pipe temperature is below -1.0°c. Remark: when the indoor standby unit is freezing, the outdoor un...

  • Page 95

    95 17.5.21 f90 (power factor correction protection) malfunction decision conditions  to maintain dc voltage level supply to power transistor.  to detect high dc voltage level after rectification. Malfunction caused  during startup and operation of cooling and heating, when power factor correction...

  • Page 96

    96 17.5.22 f91 (refrigeration cycle abnormality) malfunction decision conditions  the input current is low while the compressor is running at higher than the setting frequency. Malfunction caused  lack of gas.  3-way valve close. Troubleshooting.

  • Page 97

    97 17.5.23 f93 (compressor rotation failure) malfunction decision conditions  a compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction caused  compressor terminal disconnect  faulty outdoor pcb  faulty compressor t...

  • Page 98

    98 17.5.24 f95 (outdoor high pressure protection: cooling or soft dry) malfunction decision conditions  during operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction caused  outdoor heat exchan...

  • Page 99

    99 17.5.25 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 o compressor overheating: during operation of cooling and heating, when the compressor ol is acti...

  • Page 100

    100 17.5.26 f97 (compressor overheating) malfunction decision conditions  during operation of cooling and heating, when compressor tank temperature data (112°c) is detected by the compressor tank temperature sensor. Malfunction caused  faulty compressor tank temperature sensor  2/3 way valve clos...

  • Page 101

    101 17.5.27 f98 (input over current detection) malfunction decision conditions  during operation of cooling and heating, when an input over-current (x value in total running current control) is detected by checking the input current value being detected by current transformer (ct) with the compress...

  • Page 102

    102 17.5.28 f99 (dc peak detection) malfunction decision conditions during startup and operation of cooling and heating, when inverter dc peak data is received by the outdoor internal dc peak sensing circuitry. Malfunction caused  dc current peak due to compressor failure.  dc current peak due to ...

  • Page 103

    103 warning 18. Disassembly and assembly instructions high voltage are 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 indoor electronic...

  • Page 104

    104 8. Pull out the main electronic controller halfway. 6. Detach the cn-disp connector then remove the indicator pcb complete. 9. Detach connectors as labeled from the electronic controller, then pull out the electronic controller gently. 7. Detach the earth wire screw, terminal wire (bl), terminal...

  • Page 105

    105 18.1.4 to remove control board 12. Remove 4 screws holding the control board together then pull out the control board. Figure 6 18.1.5 to remove cross flow fan and indoor fan motor 13. Remove the screw that holds the cross flow fan and the fan motor shaft. Figure 7 14. Remove the bearing by pull...

  • Page 106

    106 16. Push the holdfast to the left and lift up the evaporator. 18. Fan motor can be removed after the removal of cross flow fan. Reminder: to reinstall the fan motor, adjust the fan motor connector to 45° towards you before fixing control board. 17. Remove the cross flow fan from the unit by pull...

  • Page 107

    107 18.2 outdoor electronic controller removal procedure caution! When handling electronic controller, be careful of electrostatic discharge. 1. Remove the 5 screws of the top panel. Fig. 1 2. Remove the 8 screws of the front panel. Fig. 2 3. Remove the screw of the terminal board cover. 4. Remove t...

  • Page 108: 19. Technical

    108 19. Technical data technical data provided are based on the air conditioner running under free frequency. 19.1 cool mode performance data unit setting: standard piping length, hi fan, cool mode at 16°c voltage: 230v 19.1.1 cs-cz9ske/cu-cz9ske indoor (°c) outdoor db (°c) db wb 16 25 35 tc shc ip ...

  • Page 109

    109 19.2 heat mode performance data unit setting: standard piping length, hi fan, heat mode at 30°c voltage: 230v 19.2.1 cs-cz9ske/cu-cz9ske indoor (°c) outdoor wb (°c) db -20 -15 -7 2 7 tc ip tc ip tc ip tc ip tc ip 24 1921 1209 2549 1377 2959 1323 3294 1245 4120 1418 20 1995 1122 2646 1275 3135 12...

  • Page 110: 20. Service

    110 20. Service data service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode. 20.1 cool mode outdoor air temperature characteristic condition - indoor room temperature: 27°c drybulb/19°c wet bulb - unit setting: standard piping...

  • Page 111

    111 20.1.2 cs-cz12ske cu-cz12ske outlet air (°c) outdoor air temperature (°c) low pressure (mpa) outdoor air temperature (°c) current (a) outdoor air temperature (°c) 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 15 20 25 30 35 40 45 50 0.60 0.65 0.70 0.75 15 20 25 30 35 40 45 50 10.00 11.00 12.00 13.00 1...

  • Page 112

    112 20.2 heat mode outdoor air temperature characteristic condition - 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: 230v 20.2.1 cs-cz9ske cu...

  • Page 113

    113 20.2.2 cs-cz12ske cu-cz12ske outlet air (°c) outdoor air temperature (°c) high pressure (mpa) outdoor air temperature (°c) current (a) outdoor air temperature (°c) 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 -25 -20 -15 -10 -5 0 5 10 1.4 1.6 1.8 2.0 2.2 2.4 2.6 -25 -20 -15 -10 -5 0 5 10 20 24 28 32 ...

  • Page 114

    114 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-cz9ske cu-cz9ske cs-cz12ske cu-cz12ske cooling capacity correction factor heating capacity correction factor pipe length (m) pipe length (m) 0.94 0.95 0.96 0.97...

  • Page 115

    115 21. Exploded view and replacement parts list 21.1 indoor unit 25 29 27 21 22 23 28 19 11 15 13 17 14 10 18 37 1 6 30 32 31 34 35 20 33 3 4 2 5 12 42 i/i 43 i/i 44 i/i 42 40 i/i 41 i/i 39 o/i 7 8 36 38 cwh55025j cwh55051j note the above exploded view is for the purpose of parts disassembly and re...

  • Page 116

    116 safety ref. No. Part name & description qty. Cs-cz9ske cs-cz12ske remark 1 chassis complete 1 cwd50c1903 ← 2 fan motor 1 arw7666accb ← o 3 cross-flow fan complete 1 cwh02c1159 ← 4 bearing assy 1 cwh64k1010 ← o 5 screw - cross-flow fan 1 cwh551146 ← 6 evaporator 1 acxb30c02040 acxb30c02110 7 flar...

  • Page 117

    117 21.2 outdoor unit 38 32 33 16 39 34 40 18 42 43 24 22 8 37 10 9 17 1 19 20 3 29 27 25 28 2 7 6 4 36 11 30 35 44 12 5 31 48 13 15 45 46 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 118

    118 safety ref. No. Part name & description qty. Cu-cz9ske cu-cz12ske remark 1 chassis assy 1 cwd52k1310 ← 2 fan motor bracket 1 cwd541167 ← 3 screw - fan motor bracket 2 cwh551217 ← 4 fan motor 1 ars6411ac ← o 5 screw - fan motor mount 4 cwh55252j ← 6 propeller fan assy 1 cwh03k1066 ← 7 nut - prope...