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Panasonic CS-E12PB4EA Service Manual

Other manuals for CS-E12PB4EA: Operating Instructions Manual

Summary of CS-E12PB4EA

  • Page 1

    © panasonic corporation 2013. Order no: papamy1305053ce air conditioner indoor unit outdoor unit cs-e9pb4ea cs-e12pb4ea cu-e9pb4ea cu-e12pb4ea destination europe please file and use this manual together with the service manual for model no. Cu-2e15pbe, cu-2e18pbe, cu-3e18pbe, cu-4e23pbe, cu-4e27pbe,...

  • Page 2: Table of Contents

    2 table of contents 1. Safety precautions ............................................. 3 2. Specifications ..................................................... 5 3. Features ............................................................. 23 4. Location of controls and components .......... 24 4.1 in...

  • Page 3: 1. Safety Precautions

    3 1. Safety precautions š read the following “safety precautions” carefully before perform any servicing. š 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. š the caution items state...

  • Page 4

    4 warning 20. During pump down operation, stop the compressor before remove the refrigeration piping. (removal of compressor while compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.) 21. After co...

  • Page 5: 2. Specifications

    5 2. Specifications model indoor cs-e9pb4ea outdoor cu-e9pb4ea performance test condition eurovent power supply phase, hz single, 50 v 220 230 min. Mid. Max. Min. Mid. Max. Cooling capacity kw 0.85 2.50 3.00 0.85 2.50 3.00 btu/h 2900 8530 10200 2900 8530 10200 kcal/h 730 2150 2580 730 2150 2580 runn...

  • Page 6

    6 model indoor cs-e9pb4ea outdoor cu-e9pb4ea compressor type hermetic motor (rotary) motor type brushless (4 poles) output power w 900 indoor fan type sirocco fan material abs motor type dc / transistor (8-poles) input power w – output power w 40 speed qlo cool rpm 330 heat rpm 410 lo cool rpm 370 h...

  • Page 7

    7 model indoor cs-e9pb4ea outdoor cu-e9pb4ea piping pipe diameter (liquid / gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) standard length m (ft) 5.0 (16.4) length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) i/d & o/d height different m (ft) 15.0 (49.2) additional gas amount g/m (oz/ft) 20 (0.2) length for...

  • Page 8

    8 model indoor cs-e12pb4ea outdoor cu-e12pb4ea performance test condition eurovent power supply phase, hz single, 50 v 220 230 min. Mid. Max. Min. Mid. Max. Cooling capacity kw 0.85 3.40 4.00 0.85 3.40 4.00 btu/h 2900 11600 13600 2900 11600 13600 kcal/h 730 2920 3440 730 2920 3440 running current a ...

  • Page 9

    9 model indoor cs-e12pb4ea outdoor cu-e12pb4ea compressor type hermetic motor (rotary) motor type brushless (4 poles) output power w 900 indoor fan type sirocco fan material abs motor type dc / transistor (8-poles) input power w – output power w 40 speed qlo cool rpm 330 heat rpm 410 lo cool rpm 370...

  • Page 10

    10 model indoor cs-e12pb4ea outdoor cu-e12pb4ea piping pipe diameter (liquid / gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) standard length m (ft) 5.0 (16.4) length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) i/d & o/d height different m (ft) 15.0 (49.2) additional gas amount g/m (oz/ft) 20 (0.2) length ...

  • Page 11

    11 š multi split combination possibility: o a single outdoor unit enables air conditioning of up to two separate rooms for cu-2e15pbe, cu-2e18pbe. O a single outdoor unit enables air conditioning of up to three separate rooms for cu-3e18pbe. O a single outdoor unit enables air conditioning of up to ...

  • Page 12

    12 connectable indoor unit outdoor unit cu-4e27pbe cu-5e34pbe type/room a b c d a b c d e wall 2.0kw cs-e7pkew cs-xe7pkew ● ● ● ● ● ● ● ● ● 2.5kw cs-e9pkew cs-xe9pkew cs-me9pd3ea cs-me9pb4ea cs-e9gfew cs-e9gfew-2 cs-e9pd3ea cs-e9pb4ea ● ● ● ● ● ● ● ● ● 3.2kw cs-e12pkew cs-xe12pkew cs-me12pd3ea cs-me...

  • Page 13

    13 š indoor unit : cs-me5pke, cs-e7/9/12pkew, cs-e9/12gfew, cs-me9/12pb4ea, cs-me9/12pd3ea, cs-e9/12pd3ea, cs-e9/12pb4ea š outdoor unit : cu-2e15pbe 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) 1.6 + 1.6 3.2 1.6 1.6 1.6 + 2.0...

  • Page 14

    14 š indoor unit : cs-me5pke, cs-e7/9/12/15/18pkew, cs-e9/12/18gfew, cs-me9/12/18pb4ea, cs-me9/12/18pd3ea, cs-e9/12pd3ea, cs-e9/12pb4ea š outdoor unit : cu-3e18pbe 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor un...

  • Page 15

    15 š indoor unit : cs-me5pke, cs-e7/9/12/15/18/21pkew, cs-e9/12/18gfew, cs-me9/12/18/21pb4ea, cs-me9/12/18pd3ea, cs-e9/12pd3ea, cs-e9/12pb4ea š outdoor unit : cu-4e23pbe 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (...

  • Page 16

    16 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) 2.0 + 2.0 + 2.5 + 2.8 9.3 2.5 + 2.5 + 4.0 9.0 2.0 + 2.0 +...

  • Page 17

    17 š indoor unit : cs-e7/9/12/15/18/21/24pkew, cs-e9/12/18gfew, cs-me9/12/18/21pb4ea, cs-me9/12/18pd3ea, cs-e9/12pd3ea, cs-e9/12pb4ea š outdoor unit : cu-4e27pbe 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indo...

  • Page 18

    18 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) 2.5+2.5+2.5+4.0 11.5 2.8+2.8+4.0 9.6 2.5+2.5+2.5+5.0 12.5...

  • Page 19

    19 š indoor unit : cs-e7/9/12/15/18/21/24pkew, cs-e9/12/18gfew, cs-me9/12/18/21pb4ea, cs-me9/12/18pd3ea, cs-e9/12pd3ea, cs-e9/12pb4ea š outdoor unit : cu-5e34pbe 5 room 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (k...

  • Page 20

    20 5 room 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw...

  • Page 21

    21 5 room 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw...

  • Page 22

    22 5 room 4 room 3 room 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw...

  • Page 23: 3. Features

    23 3. Features š inverter technology o wider output power range o energy saving o quick cooling o quick heating o more precise temperature control š environment protection o non-ozone depletion substances refrigerant (r410a) š long installation piping o long piping up to 20 meters š easy to use remo...

  • Page 24

    24 4. Location of controls and components 4.1 indoor unit 4.2 outdoor unit 4.3 remote control.

  • Page 25: 5. Dimensions

    25 5. Dimensions 5.1 indoor unit.

  • Page 26

    26 5.2 outdoor unit 5.2.1 cu-e9pb4ea 5.2.2 cu-e12pb4ea.

  • Page 27

    27 6. Refrigeration cycle diagram 6.1 cs-e9pb4ea cu-e9pb4ea.

  • Page 28

    28 6.2 cs-e12pb4ea cu-e12pb4ea.

  • Page 29: 7. Block Diagram

    29 7. Block diagram 7.1 cs-e9pb4ea cu-e9pb4ea.

  • Page 30

    30 7.2 cs-e12pb4ea cu-e12pb4ea.

  • Page 31

    31 8. Wiring connection diagram 8.1 indoor unit.

  • Page 32

    32 8.2 outdoor unit 8.2.1 cu-e9pb4ea resistance of compressor windings model cu-e9pb4ea connection 5rd132xbe21 (Ω) u-v 1.897 u-w 1.907 v-w 1.882 note: resistance at 20°c of ambient temperature..

  • Page 33

    33 8.2.2 cu-e12pb4ea resistance of compressor windings model cu-e12pb4ea connection 5rd132xba21 (Ω) u-v 1.897 u-w 1.907 v-w 1.882 note: resistance at 20°c of ambient temperature..

  • Page 34

    34 9. Electronic circuit diagram 9.1 indoor unit.

  • Page 35

    35 9.2 outdoor unit 9.2.1 cu-e9pb4ea.

  • Page 36

    36 9.2.2 cu-e12pb4ea.

  • Page 37: 10.  Printed Circuit Board

    37 10. Printed circuit board 10.1 indoor unit 10.1.1 main printed circuit board.

  • Page 38

    38 10.1.2 display printed circuit board.

  • Page 39

    39 10.2 outdoor unit 10.2.1 cu-e9pb4ea.

  • Page 40

    40 10.2.2 cu-e12pb4ea.

  • Page 41: 11. Installation

    41 11. Installation instruction 11.1 indoor unit 11.1.1 selecting the location for the indoor unit provide a check port on the piping side ceiling for repair and maintenance. š install the indoor unit once the following conditions are satisfied and after receiving the customer approval. 1 the indoor...

  • Page 42

    42 11.1.2 installation of indoor unit this air conditioner uses a drain up motor. Horizontally install the unit using a level gauge. Ceiling opening dimensions and hanging bolt location the paper model for installation expand or shrink according to temperature and humidity. Check on dimensions befor...

  • Page 43

    43 vacuum drying after completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit. The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves. Caution use two wrenches and tighten with regular torque. Flare nut f...

  • Page 44

    44 11.1.5 heat insulation be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water leakage. 1 use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°c). 2 precautions in high humi...

  • Page 45

    45 11.1.6.1 wire stripping and connection requirement 11.1.7 installation of decorative panel the decorative panel has its installation direction. Confirm the direction by displaying the piping side. 1 remove the air inlet grille by moving the catchers to center. 2 fitting the decorative panel o tem...

  • Page 46

    46 3 fit the decorative panel and ceiling wall together and confirm no gap in between. Readjust indoor unit height, if there is a gap between ceiling wall and decorative panel. 4 open the indoor control box cover. (2 pcs) 5 insert firmly the connector of cosmetic louver to indoor pcb cn-stm1, cn-stm...

  • Page 47

    47 11.2 outdoor unit 11.2.1 select the best location š if an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed. š there should not be any animal or plant which could be affected by hot air discharged. š keep the spac...

  • Page 48

    48 11.2.3 connect the piping 11.2.3.1 connecting the piping to indoor unit please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe. (in case of using long piping) connect the piping š align the center of piping and sufficiently tighten the flare nu...

  • Page 49

    49 2 connect the center hose of the charging set to a vacuum pump. 3 turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmhg (0 mpa) to -76 cmhg (-0.1 mpa). Then evacuate the air approximately ten minutes. 4 close the low side valve of the charging se...

  • Page 50

    50 11.2.6.1 cutting and flaring the piping 1 please cut using pipe cutter and then remove the burrs. 2 remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3 please make flare after inserting the f...

  • Page 51

    51 remo-con no. Change in remote control 1 remove the batteries from the battery compartment of the remote control. 2 on the left side of the battery compartment, there is a small opening in the centre in which jumper (j_a) can be seen. In the accepted remo-con pcb shown beside, jumper (j_b) can be ...

  • Page 52: 12. Operation

    52 12. Operation control 12.1 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 53

    53 12.1.5 automatic operation š 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. š during operation mode judgment, indoor fan motor (with speed of lo-) is running for 30 seco...

  • Page 54

    54 [heating] š according to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control š immediately after the fan motor started, feedback control is performed once every second. š during fan motor on, if fan motor feedback ≥ 2550 rpm or counter increase, fan ...

  • Page 55

    55 12.4 airflow direction 1. There is one type of airflow, vertical airflow (directed by horizontal vane). 2. 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...

  • Page 56

    56 12.6 quiet operation (heating) š purpose o to provide quiet heating operation compare to normal operation. š control condition o quiet operation start condition when “powerful/quiet” button at remote control is pressed. Powerful/quiet led illuminates. O quiet operation stop condition when one of ...

  • Page 57

    57 12.9 auto restart control š when the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes. š thi...

  • Page 58: 13. Protection

    58 13. Protection control 13.1 protection control for all operations 13.1.1 restart control (time delay safety control) š 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 59

    59 13.1.4 compressor overheating prevention control š instructed frequency for compressor operation will be regulated by compressor top temperature. The changes of frequency are as below. š if compressor top temperature exceeds 107°c, compressor will be stopped, occurs 4 times per 20 minutes, timer ...

  • Page 60

    60 13.2 protection control for cooling & soft dry operation 13.2.1 outdoor air temperature control š the compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. š this control will begin 1 minute after the compressor starts. š compresso...

  • Page 61

    61 13.2.6 odor cut control š 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 62: 14. Servicing

    62 14. Servicing mode 14.1 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 63

    63 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 64

    64 14.3 outdoor pcb test run operation (for pump down/servicing purpose) š the test run operation will be activated by short-circuiting cn-s (pin 1 and 2) at outdoor unit pcb after power supplied to outdoor unit terminal 1 and 2. The unit forced to run rated frequency cooling operation mode. 14.3.1 ...

  • Page 65

    65 14.3.2 cu-e12pb4ea.

  • Page 66: 15. Troubleshooting

    66 15. Troubleshooting guide 15.1 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 67

    67 15.1.1 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 refr...

  • Page 68

    68 15.2 breakdown self diagnosis function 15.2.1 self diagnosis function (three digits alphanumeric code) š once abnormality has occurred during operation, the unit will stop its operation, and timer led blinks. š although timer led goes off when power supply is turned off, if the unit is operated u...

  • Page 69

    69 15.3 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 70

    70 diagnosis display abnormality / protection control abnormality judgment protection operation problem check location f95 outdoor cooling high pressure protection 4 times happen within 20 minutes — cooling high pressure protection š check refrigeration system š outdoor air circuit f96 power transis...

  • Page 71

    71 15.4 self-diagnosis method 15.4.1 h11 (indoor/outdoor abnormal communication) malfunction decision conditions š 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 š faulty ...

  • Page 72

    72 15.4.2 h12 (indoor/outdoor capacity rank mismatched) malfunction decision conditions š during startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction caused š wrong models interconnected. š wrong indoor unit or outdoor unit pcbs mounted. š indo...

  • Page 73

    73 15.4.3 h14 (indoor intake air temperature sensor abnormality) malfunction decision conditions š 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 š faulty connector con...

  • Page 74

    74 15.4.4 h15 (compressor temperature sensor abnormality) malfunction decision conditions š 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 š faulty connector connectio...

  • Page 75

    75 15.4.5 h16 (outdoor current transformer) malfunction decision conditions š 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 š lack of gas š broken ct (current transformer) š...

  • Page 76

    76 15.4.6 h19 (indoor fan motor – dc motor mechanism locked) malfunction decision conditions š 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 š operation stops due to short circuit in...

  • Page 77

    77 15.4.7 h23 (indoor pipe temperature sensor abnormality) malfunction decision conditions š 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 š faulty connector conne...

  • Page 78

    78 15.4.8 h24 (indoor pipe temperature sensor 2 abnormality) malfunction decision conditions š during startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor 2 are used to determine sensor errors. Malfunction caused š faulty connector c...

  • Page 79

    79 15.4.9 h27 (outdoor air temperature sensor abnormality) malfunction decision conditions š 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 š faulty connector connection. š f...

  • Page 80

    80 15.4.10 h28 (outdoor pipe temperature sensor abnormality) malfunction decision conditions š 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 š faulty connector connection. ...

  • Page 81

    81 15.4.11 h30 (compressor discharge temperature sensor abnormality) malfunction decision conditions š 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 š faulty conn...

  • Page 82

    82 15.4.12 h33 (unspecified voltage between indoor and outdoor) malfunction decision conditions š the supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction caused š wrong models interconnected. š wrong indoor unit and outdoor unit pcbs used. š indoor unit or ou...

  • Page 83

    83 15.4.13 h97 (outdoor fan motor – dc motor mechanism locked) malfunction decision conditions š the rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor. Malfunction caused š operation stops due to short circuit inside the fan motor winding. š op...

  • Page 84

    84 15.4.14 h98 (error code stored in memory and no alarm is triggered / no timer led flashing) malfunction decision conditions š indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. š phenomena: unit is stoppi...

  • Page 85

    85 15.4.15 h99 (indoor freeze prevention protection: cooling or soft dry) error code will not display (no timer led blinking) but store in eeprom malfunction decision conditions š freeze prevention control takes place (when indoor pipe temperature is lower than 2°c) malfunction caused š air short ci...

  • Page 86

    86 15.4.16 f11 (4-way valve switching failure) malfunction decision conditions š 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 š indoor heat...

  • Page 87

    87 15.4.17 f90 (power factor correction protection) malfunction decision conditions š to maintain dc voltage level supply to power transistor. š to detect high dc voltage level after rectification. Malfunction caused š during startup and operation of cooling and heating, when power factor correction...

  • Page 88

    88 15.4.18 f91 (refrigeration cycle abnormality) malfunction decision conditions š the input current is low while the compressor is running at higher than the setting frequency. Malfunction caused š lack of gas. š 3-way valve close. Troubleshooting.

  • Page 89

    89 15.4.19 f93 (compressor rotation failure) malfunction decision conditions š a compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction caused š compressor terminal disconnect š faulty outdoor pcb š faulty compressor t...

  • Page 90

    90 15.4.20 f95 (outdoor high pressure protection: cooling or soft dry) malfunction decision conditions š 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 š outdoor heat exchan...

  • Page 91

    91 15.4.21 f96 (ipm overheating) malfunction decision conditions š during operating of cooling and heating, when ipm temperature data (100°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 92

    92 15.4.22 f97 (compressor overheating) malfunction decision conditions š during operation of cooling and heating, when compressor tank temperature data (112°c) is detected by the compressor tank temperature sensor. Malfunction caused š faulty compressor tank temperature sensor š 2/3 way valve close...

  • Page 93

    93 15.4.23 f98 (input over current detection) malfunction decision conditions š 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 compresso...

  • Page 94

    94 15.4.24 f99 (dc peak detection) malfunction decision conditions during startup and operation of cooling and heating, when inverter dc peak data is received by the outdoor internal dc peak sensing circuitry. Malfunction caused š dc current peak due to compressor failure. š dc current peak due to d...

  • Page 95

    95 warning 16. 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. 16.1 disassembly of part...

  • Page 96

    96 4 to remove the electronic controller, release the 6 hooks that hold it to the control board (fig. 4). Fig. 4 5 remove the front grille by removing the screw a and scr ews b, c & d half way open (fig. 5). Fig. 5 6 remove the air guider and drain pan complete by removing the screws (fig. 6). Fig. ...

  • Page 97

    97 8 remove the fan motor by release the fan motor lead wire connectors and fan motor screws (fig. 8). Fig. 8.

  • Page 98

    98 16.2 outdoor electronic controller removal procedure 16.2.1 cu-e9pb4ea 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 cove...

  • Page 99

    99 16.2.2 cu-e12pb4ea 1 remove the 4 screws of the top panel. Fig. 1 2 remove the 10 screws of the front panel. Fig. 2 3 remove the top cover of the electronic controller. Fig. 3 4 remove the control board. Fig. 4 5 remove the 8 screws of the electronic controller. Fig. 5 caution! When handling elec...

  • Page 100: 17. Service

    100 17. Service data service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode. 17.1 cool mode outdoor air temperature characteristic condition š indoor room temperature: 27°c drybulb/19°c wet bulb š unit setting: standard piping...

  • Page 101

    101 17.1.2 cs-e12pb4ea cu-e12pb4ea out le ta ir (°c ) outdoor air temperature (°c) outdoor air temperature (°c) outdoor air temperature (°c) c urrent (a) lo w p ressure (m pa) 220v 230v 10.00 11.00 12.00 13.00 14.00 15.00 14 19 24 29 34 39 44 2.00 2.50 3.00 3.50 4.00 4.50 5.00 14 19 24 29 34 39 44 0...

  • Page 102

    102 17.2 heat mode outdoor air temperature characteristic condition š indoor room temperature: 20°c drybulb/ -°c wet bulb š unit setting: standard piping length, forced heating at 30°c, hi fan š compressor frequency: rated for heating operation š voltage: 220v/230v 17.2.1 cs-e9pb4ea cu-e9pb4ea out l...

  • Page 103

    103 17.2.2 cs-e12pb4ea cu-e12pb4ea out le tai r (° c ) outdoor air temperature (°c) outdoor air temperature (°c) outdoor air temperature (°c) c urrent (a) h igh pressure (m pa) 220v 230v 20 24 28 32 36 40 44 48 52 -15 -10 -5 0 5 10 15 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 -15 -10 -5 0 5 10 15...

  • Page 104

    104 17.3 piping length correction factor the characteristic of the unit has to be corrected in accordance with the piping length. 17.3.1 cs-e9pb4ea cu-e9pb4ea 17.3.1.1 cooling capacity 17.3.1.2 heating capacity note: the graphs show the factor after added right amount of additional refrigerant. Pipi...

  • Page 105

    105 17.3.2 cs-e12pb4ea cu-e12pb4ea 17.3.2.1 cooling capacity 17.3.2.2 heating capacity note: the graphs show the factor after added right amount of additional refrigerant. Capa city cor rection factor piping length (m) range of additional refrigerant charge 0.90 1.00 1.10 2 3 4 5 6 7 8 9 10 11 12 13...

  • Page 106

    106 18. Exploded view and replacement parts list 18.1 indoor unit.

  • Page 107

    107 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 108

    108 safety ref. No. Part name & description qty cs-e9pb4ea cs-e12pb4ea remark 1 base pan ass’y 1 cwd52k1100 ← 2 inner polystyrene complete 1 cwg07c1047 ← 3 cabinet side plate ass’y 1 cwe041121 ← 4 cabinet side plate ass’y 1 cwe041122 ← 5 lead wire - fan motor 1 cwa67c5136 ← o 6 fan motor 1 ehds50a40...

  • Page 109

    109 safety ref. No. Part name & description qty cs-e9pb4ea cs-e12pb4ea remark 53 installation instruction 1 cwf615950 ← 54 installation instruction 1 cwf615951 ← 55 installation instruction 1 cwf615952 ← 56 installation instruction 1 cwf615953 ← 57 installation instruction 1 cwf615954 ← 58 installat...

  • Page 110

    110 18.2 cz-bt20e (front grille complete) 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 111

    111 safety ref. No. Part name & description qty part no. Remark 1 front grille - complete 1 cwe11c3105 4 a.S motor dc single 12v 250 ohm 2 cwa981105j o 5 bracket - a.S.Motor 1 cwd932522 6 vane 4 cwe241159 7 shaft 6 cwh631038 8 shaft 2 cwh631045 9 connector - shaft 4 cwh081007 10 bearing 6 cwh641008 ...

  • Page 112

    112 18.3 outdoor unit 18.3.1 cu-e9pb4ea 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 113

    113 safety ref. No. Part name & description qty. Cu-e9pb4ea remark 1 chassis complete 1 cwd52k1277 2 sound proof material 1 cwg302742 3 fan motor bracket 1 cwd541167 4 screw - fan motor bracket 2 cwh551217 5 fan motor 1 ars6411ac o 6 screw - fan motor mount 4 cwh55252j 7 propeller fan assy 1 cwh03k1...

  • Page 114

    114 safety ref. No. Part name & description qty. Cu-e9pb4ea remark 53 holder sensor 2 cwh32143 54 holder sensor 1 cwh321096 (note) š all parts are supplied from papamy, malaysia (vendor code: 00029488). š “o” marked parts are recommended to be kept in stock..

  • Page 115

    115 18.3.2 cu-e12pb4ea 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 116

    116 safety ref. No. Part name & description qty. Cu-e12pb4ea remark 1 chassis complete 1 cwd52k1261 2 anti - vibration bushing 3 cwh50077 3 compressor 1 5rd132xba21 o 4 nut - compressor mount 3 cwh56000j 5 sound proof material 1 cwg302744 6 fan motor bracket 1 cwd541153 7 fan motor 1 arw8401ac o 8 s...

  • Page 117

    117 safety ref. No. Part name & description qty. Cu-e12pb4ea remark 77 packing - l. Tube 1 cwb81012 78 holder sensor 1 cwh32143 (note) š all parts are supplied from papamy, malaysia (vendor code: 00029488). š “o” marked parts are recommended to be kept in stock. Printed in malaysia fy0513-0