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Panasonic CS-C12DKU Service Manual

Manual is about: Panasonic Air Conditioner User Manual

Summary of CS-C12DKU

  • Page 1

    1 features 2 2 functions 3 3 product specifications 6 3.1. Cs-c9dku cu-c9dku 6 3.2. Cs-c12dku cu-c12dku 8 4 dimensions 10 4.1. Indoor unit & remote control 10 4.2. Outdoor unit 11 5 refrigeration cycle diagram 12 6 block diagram 13 7 wiring diagram 14 8 operation details 15 8.1. Cooling operation 15...

  • Page 2: 1 Features

    10.5. Indoor unit 37 10.6. Outdoor unit 40 11 2-way, 3-way valve 45 11.1. Evacuation of installation 46 11.2. Pumping down 47 11.3. Evacuation of re-installation 48 11.4. Balance refrigerant of the 2-way, 3-way valves 49 11.5. Evacuation 50 11.6. Gas charging 51 12 servicing information 52 12.1. Dis...

  • Page 3: 2 Functions

    2 functions ı 3 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 4

    4 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 5

    5 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 6: 3 Product Specifications

    3 product specifications 3.1. Cs-c9dku cu-c9dku unit indoor unit outdoor unit power source (phase, voltage, cycle) ø, v, hz single, 115, 60 cooling capacity kw (btu/h) 2.58 (8,800) moisture removal l/h (pint/h) 1.0 (2.1) airflow method outlet intake side view top view air volume lo m 3 /min (cfm) 4....

  • Page 7

    Unit indoor unit outdoor unit thermostat electrical — protection device — 2 stage overload protector capillary tube length inch (mm) — 26-18/32 (675) flow rate l/min — 13.0 inner diameter inch (mm) — 20/32 (1.6) air filter material style p.P. Honeycomb — capacity control capillary tube compressor ca...

  • Page 8: 3.2. Cs-C12Dku Cu-C12Dku

    3.2. Cs-c12dku cu-c12dku unit indoor unit outdoor unit power source (phase, voltage, cycle) ø, v, hz single, 115, 60 cooling capacity kw (btu/h) 3.60 (12,300) moisture removal l/h (pint/h) 1.6 (3.4) airflow method outlet intake side view top view air volume lo m 3 /min (cfm) 5.6 (199) - 5.6 (199) — ...

  • Page 9

    Unit indoor unit outdoor unit capillary tube length inch (mm) — 16-23/32 (425) flow rate l/min — 18.0 inner diameter inch (mm) — 2/32 (1.7) air filter material style p.P. Honeycomb — capacity control capillary tube compressor capacitor µf, vac — 50 µf, 370vac fan motor capacitor µf, vac 5.0 µf, 230v...

  • Page 10: 4 Dimensions

    4 dimensions 4.1. Indoor unit & remote control 10 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 11: 4.2. Outdoor Unit

    4.2. Outdoor unit cu-c9dku cu-c12dku 11 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 12

    5 refrigeration cycle diagram cs-c9dku cu-c9dku cs-c12dku cu-c12dku 12 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 13: 6 Block Diagram

    6 block diagram cs-c9dku cu-c9dku cs-c12dku cu-c12dku 13 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 14: 7 Wiring Diagram

    Cs-c9dku cu-c9dku cs-c12dku cu-c12dku remarks b : blue br : brown bl : black gry : gray o : orange p : pink r : red w : white y/g : yellow/green power supply cord resistance of indoor fan motor windings model cs-c9dku cs-c12dku connection cwa921143 blue-yellow 82.4 Ω yellow-red 103.4 Ω note: resista...

  • Page 15: 8 Operation Details

    8 operation details 8.1. Cooling operation • cooling operation can be set using remote control. • this operation is applied to cool down the room temperature reaches the setting temperature set on the remote control. • the remote control setting temperature, which takes the reading of intake air tem...

  • Page 16: 8.2. Soft Dry Operation

    8.2.1. Soft dry operation time diagram 8.2. Soft dry operation • soft dry operation can be set using remote control. • soft dry operation is applied to dehumidify and to perform a gentle cooling to the room. • this operation starts when the intake air temperature sensor reaches the setting temperatu...

  • Page 17: 8.3. Automatic Operation

    8.3. Automatic operation • automatic operation can be set using remote control. • this operation starts to operate with indoor fan at slo speed for 20 seconds to judge the intake air temperature. • after judged the temperature, the operation mode is determined by referring to the below standard. • t...

  • Page 18: 8.4. Operation Control

    8.4. Operation control 8.4.1. Restart control (time delay safety control) • when the thermo-off temperature (temperature which compressor stops to operate) is reached during:- − cooling/heating operation - the compressor stops for 3 minutes (minimum) before resume operation. − soft dry operation - t...

  • Page 19

    8.4.5. Anti-freezing control • if the temperature of the indoor heat exchanger falls below 35.6°f continuously for 4 minutes or more, the compressor turns off. The fan speed setting remains the same. • this phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume...

  • Page 20

    • anti-dew formation is control by:- • increasing air flow volume 1. Lo fan speed. Lo fan speed is changed to lo+ after 30 min to prevent dew formation. 2. Qlo fan speed. Dew formation may occur at qlo cool, therefore qlo cool is operated only 1hr 30min (1 hr qlo, 30 min qlo + 80 rpm). After that, i...

  • Page 21

    During anti-dew condensation prevention, airflow direction manual control angle change from 10°, 15°, 20°, 26°, 32° to 22°, 24°, 26°, 28°, 30°. 8.5. Indoor fan speed control • indoor fan speed can be set using remote control. 8.5.1. Fan speed rotation chart speed fan speed (rpm) cs-c9dku cs-c12dku s...

  • Page 22

    8.5.2. Automatic fan speed control • when set to auto fan speed, the fan speed is adjusted between maximum and minimum setting as shown in the table. − fan speed rotates in the range of hi and me. − deodorizing control will be activated. • auto fan speed during cooling operation: 1. Indoor fan will ...

  • Page 23

    • when the vertical airflow direction is set to auto using the remote control, the louver swings up and down as shown in the diagram. • when stop operation using the remote control, the discharge vent is reset, and stop at the closing position. • during cooling operation or soft dry operation, indoo...

  • Page 24: 8.9. Powerful Operation

    8.8. Horizontal airflow direction control • the horizontal airflow direction louvers can be adjusted manually by hand. 8.9. Powerful operation • the powerful operation is to achieve the setting temperature quickly. • when powerful operation is set, the setting temperature will be automatically decre...

  • Page 25: 8.10. Quiet Operation

    8.10. Quiet operation (for cooling operation or cooling region of soft dry operation) • the quiet operation is to provide quiet/cooling operation condition compare to normal operation. • once the quiet mode is set at the remote control, the quiet mode led illuminated. The sound level will reduce aro...

  • Page 26: 8.11. Timer Control

    8.11. Timer control • there are 2 types of timer, on and off timer. • both on and off timer can be set by pressing on or off button respectively. • by pressing on/off operation button, on timer or off timer will not be cancelled. • to cancel the previous timer setting, press cancel button. • to acti...

  • Page 27

    8.14. Economy mode operation • purpose of this operation is to save or reduced electrical power consumption of the room air conditioner. However consumer is advised to use economy mode operation after the room temperature reaches the desired temperature. 1. Cooling and soft dry mode • when the econo...

  • Page 28: 9 Operating Instructions

    9 operating instructions 28 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 29

    29 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 30

    30 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 31

    31 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 32

    32 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 33

    33 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 34: 10.1. Safety Precautions

    10 installation instructions required tools for installation works 1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench 13.3 lbf.Ft 31.0 lbf.Ft 40.6 lbf.Ft 3. Electric drill, hole core drill (ø2 3/4”) 7. Reamer 11. ...

  • Page 35

    1. The equipment must be earthed and installed with earth leakage current breaker. It may cause electrical shock if grounding is not perfect. 2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire....

  • Page 36: 10.4. Indoor/outdoor Unit

    Applicable piping kit cz-3f5, 7aen (c9dk) cz-4f5,7, 10an (c12dk) 10.3. Select the best location indoor unit • there should not be any heat source or steam near the unit. • there should not be any obstacles blocking the air circulation. • a place where air circulation in the room is good. • a place w...

  • Page 37: 10.5. Indoor Unit

    10.5.1. Select the best location (refer to “select the best location” section) 10.5.2. How to fix installation plate the mounting wall is strong and solid enough to prevent it from the vibration. The wall must be able to withstand the weight of the unit. The centre of installation plate should be at...

  • Page 38

    10.5.4. Indoor unit installation 1. For the right rear piping 2. For the embedded piping (this can be used for left rear piping & left bottom piping also.) 38 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 39

    10.5.5. Indoor unit electrical wiring 1. Remove the control board metal cover. 2. Unscrew the conduit cover & fix the conduit connector to conduit cover with lock nut, then secure it against chassis. 3. Connecting wire between indoor unit and outdoor unit should bw ul listed or csa approved 4 x awg1...

  • Page 40: 10.6. Outdoor Unit

    How to take out front grille please follow the steps below to take out front grille if necessary such as when servicing. 1. Open the intake grille and remove the screw at the front of the front grille. 2. Set the vertical airflow direction louver to the horizontal position. 3. Slide down the 2 caps ...

  • Page 41

    10.6.3. Connecting the piping 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 • align the center of piping and sufficiently tighten the flare nut with f...

  • Page 42

    10.6.4. 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. 1. Connect a charging hose with a push pin to the low side of a charging set and the service port of the 3-way valve. • be sure to connect ...

  • Page 43

    10.6.5. Outdoor unit electrical wiring 1. Remove top panel. 2. Remove control board cover (metal & resin). 3. Remove plugs. Check the drainage • open front panel and remove air filters. (drainage checking can be carried out without removing the front grille.) • pour a glass of water into the drain t...

  • Page 44

    Check items is there any gas leakage at flare nut connections? Has the heat insulation been carried out at flare nut connection? Is the connecting wiring being fixed to terminal board firmly? Is the connecting wiring being clamped firmly? Is the drainage ok? (refer to “check the drainage” section) i...

  • Page 45: 11 2-Way, 3-Way Valve

    11 2-way, 3-way valve 2-way valve (liquid side) 3-way valve (gas side) works shaft position shaft position service port shipping close close close (with valve cap) (with valve cap) (with cap) evacuation close close open (installation and (counter-clockwise) (clockwise) (push-pin) re-installation) op...

  • Page 46

    When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. 1. Connect a charging hose with a push pin to the low side of a charging set and the service port of a 3-way valve. • be sure to connect the end of the charging hose with the ...

  • Page 47: 11.2. Pumping Down

    11.2. Pumping down procedure: 1. Confirm that both the 2-way and 3-way valves are set to the opened position. • remove the valve stem caps and confirm that the valve stems are in the opened position. • be sure to use a hexagonal wrench to operate the valve stems. 2. Operate the unit for 10 to 15 min...

  • Page 48

    11.3. Evacuation of re-installation when reinstalling an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. 1. Connect a charging hose with a push pin to the low side of a charging set and the service port of the 3-way valve. • be sure to connec...

  • Page 49

    (lack of refrigerant in the refrigeration cycle) procedure: 1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port. • leave the valve on the charge set closed. • connect the charge hose with the push-pin to the servic...

  • Page 50: 11.5. Evacuation

    11.5. Evacuation (no refrigerant in the refrigeration cycle) procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. • confirm that the gauge needle has moved toward -14.5 psi (-76 cmhg) [vacuum of 4 mmhg or less.] 3. Close the valve (low side...

  • Page 51: 11.6. Gas Charging

    11.6. Gas charging (after evacuation) procedure: 1. Connect the charge hose to the charging cylinder. • connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. • open the valve at the bottom of the cylinde...

  • Page 52: 12 Servicing Information

    • electronic controller and display complete unit can be seen by following the below removal procedures. Fig. 1 − remove the 2 caps and 2 screws at the bottom of the front grille.(fig.1) fig. 2 − remove the front grille complete. (fig.2) fig. 3 − release the hooks on top and on the left side of cont...

  • Page 53

    Fig. 4 − remove the indicator complete screw, and then remove the indicator complete.(fig.4) fig. 5 − to remove the electronic controller. − remove the particular piece (fig.5). − release cn-fm connector (fig.) − release cn-fb connector (fig.5) − release cn-th connector (fig.5) − release cn-stm1 con...

  • Page 54

    • remove control board cover fig. 7 − remove the screw on the left side of the unit. (fig.7) − pull the hook to the left and lift up the evaporator. (fig. 7) − pull down the discharge grille complete. (fig.7) fig. 8 − remove indoor pipe sensor and air intake sensor from the evaporator. (fig.8) − rem...

  • Page 55: 12.4. Auto Off/on Button

    12.4. Auto off/on button • the “auto off/on button” (behind the front grille) is used to operate the air conditioner if remote control is misplaced or mulfunctioning. • forced cooling operation is possible by pressing the “auto off/on button” for more than 5s where “beep” sound is heard then release...

  • Page 56

    • when the batteries are inserted for the first time or the batteries are replaced, you may notice the indications at remote control’s display screen blink continuously and not functionable. If this condition happens, try to reset the remote control by pushing the reset terminal with a pointing devi...

  • Page 57: 13 Troubleshooting Guide

    13.1. Refrigeration cycle system in order to diagnose malfunctions, make sure that there is no electrical problem before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of compressor or fan motor. The normal outlet air tem...

  • Page 58

    13.2. Relationship between the condition of the air conditioner and pressure and electric current cooling mode condition of the air conditioner low pressure high pressure electric current during operation insufficient refrigerant (gas leakage) clogged capillary tube or strainer short circuit in the ...

  • Page 59: 14 Technical Data

    14 technical data 14.1. Thermostat characteristics 59 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 60

    14.2. Operation characteristics 14.2.1. Cs-c9dk cu-c9dk 60 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 61

    61 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 62

    14.2.2. Cs-c12dk cu-c12dk 62 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 63

    63 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 64

    15 exploded view (indoor unit) 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. 64 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 65

    16 replacement parts list (indoor unit) ref. No. Part name & description qty. Cs-c9dku cs-c12dku remarks 1 chassy complete 1 cwd50c1401 ← 0 2 fan motor, ac15w single 1 cwa921143 ← 0 3 cross flow fan complete 1 cwh02c1031 ← 0 4 bearing ass’y 1 cwh64k007 ← 0 5 screw - cross flow fan 1 cwh4580304 ← 6 e...

  • Page 66

    17 exploded view (outdoor unit) cu-c9dk cu-c12dk 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. 66 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 67

    18 replacement parts list (outdoor unit) ref. No. Part name & description qty. Cu-c9dku cu-c12dku remarks 1 chassy ass’y 1 cwd50k2055a ← 0 2 sound proof material 1 cwg302125 ← 3 fan motor bracket 1 cwd541030 ← 4 screw - fan motor bracket 2 cwh551059 ← 5 fan motor, ac31w single 1 cwa951244 ← 0 6 scre...

  • Page 68: 19.1. Indoor Unit

    19 electronic circuit diagram 19.1. Indoor unit 1 2 3 4 c22 0.01 r58 10k auto sw r59 1k display complete 9 cn-disp cn-disp 8 7 6 5 4 3 2 1 10 1 2 3 4 5 6 7 8 timer/air sw(org) power(grn) quiet(org) powerful(org) c401 47 6.3v bz01 bz e c b q01 c143xktx r55 1k r12 1k c02 0.01 r88 5.1k electronic contr...

  • Page 69

    3xktx r20 r21 r22 r23 r24 r25 d10 d09 d08 d07 d06 d05 r18 r19 d12 d11 p7 2 p7 3 p7 4 p75 p6 4 p65 p66 p67 p4 0 p4 1 p4 2 p4 3 p4 4 p4 5 p4 6 p4 7 p50 p51 ry-pwr drive signal p52 p53 p54 p55 p56 p57 vss0 vdd0 p30 p31 p32 p33 p34 p35 an11 an12 an13 an14 an15 an16 an17 av55 vdd 1 p2 5 p2 4 p2 3 sck3 0 ...

  • Page 70

    Test r02 1k r01 10 k r32 150k 4.096 mhz (47pf x 2) r41 1k q03 c143xktx r44 1k c16 0.01 r37 10k 1 2 r38 jx1 c15 0.01 r43 r79 10k x01 cn-ion 4 3 2 1 c37 0.01 q05 c2412ktx c10 0.1 16v jp3 r49 1k jp4 c17 3300 35v c14 470 25v c11 100 16v ic03 g i 5v 12v i g ic04 db01 t01 5 8 13 2 regulator regulator + ~ ...

  • Page 71

    Schematic diagram 4/4 c9dku/c12dku outdoor unit terminal w br y y y br r fan motor r magnetic relay b b b gry b compressor 65 41 3l 2 l1 12 to power supply source to outdoor unit capacitor capacitor overload protector y 71 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 72

    72 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 73

    How to use electronic circuit diagram timer table test mode name time (when test point remarks short-circuited) real timer 1 hr. 1 min. 10 min. 10 sec. 1 min. 1 sec. Time delay safety control 2 min. 58 sec. 0 sec. Forced operation 60 sec. 0 sec. Time save control 7 min. 4.2 sec. Anti-freezing 4 min....

  • Page 74: 19.2. Remote Control

    19.2. Remote control 74 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 75: 19.3. Print Pattern

    19.3. Print pattern indoor unit printed circuit board 75 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 76

    76 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku.

  • Page 77

    Indicator printed circuit board 77 cs-c9dku cu-c9dku / cs-c12dku cu-c12dku [phaam] printed in malaysia.