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Panasonic CS-MC12DKV Service Manual

Other manuals for CS-MC12DKV: Operating Instructions Manual

Summary of CS-MC12DKV

  • Page 1

    1 features 2 2 functions 3 3 product specifications 6 3.1. Cs-mc12dkv cu-2c24dkv 6 4 dimensions 8 4.1. Indoor unit & remote control 8 4.2. Outdoor unit 9 5 refrigeration cycle diagram 10 6 block diagram 11 7 wiring diagram 12 8 operation details 13 8.1. Cooling operation 13 8.2. Soft dry operation 1...

  • Page 2: 1 Features

    12 servicing information 50 12.1. Distinction of lead free (pbf) printed circuit board 50 12.2. Indoor electronic controllers removal procedures 50 12.3. Indoor fan motor and cross flow fan removal procedures 51 12.4. Auto off/on button 52 12.5. Remote control reset 53 13 troubleshooting guide 54 13...

  • Page 3: 2 Functions

    2 functions 3 cs-mc12dkv cu-2c24dkv.

  • Page 4

    4 cs-mc12dkv cu-2c24dkv.

  • Page 5

    Outdoor unit to protect compressor from reverse rotation when there is a instantaneous power failure. 60 sec. Forced operation control once the compressor is activated, it does not stop within the first 60 sec. However, it stops immediately when received stop signal from remote control. Overload pro...

  • Page 6: 3 Product Specifications

    3 product specifications 3.1. Cs-mc12dkv cu-2c24dkv unit indoor unit outdoor unit power source (phase, voltage, cycle) ø, v, hz single 220 60 cooling capacity kw (btu/h) (1 unit) 3.52 (12,000) (2 units) 7.04 (24,000) moisture removal i/h (pin/h) (1 unit) 2.0 (4.2) (2 units) (8.5) airflow method outl...

  • Page 7

    Unit indoor unit outdoor unit fan motor description cross-flow fan propeller fan material asg32ki ppresin type induction (4-poles) induction (6-poles) input w 55.0 170.8 rated output w 15 77 fan speed low rpm 900 — medium rpm 1,080 — high rpm 1,280 870 - 870 superhigh rpm 1,310 — heat exchanger desc...

  • Page 8: 4 Dimensions

    4 dimensions 4.1. Indoor unit & remote control 8 cs-mc12dkv cu-2c24dkv.

  • Page 9

    4.2. Outdoor unit 9 cs-mc12dkv cu-2c24dkv.

  • Page 10

    5 refrigeration cycle diagram 10 cs-mc12dkv cu-2c24dkv.

  • Page 11: 6 Block Diagram

    6 block diagram 11 cs-mc12dkv cu-2c24dkv.

  • Page 12: 7 Wiring Diagram

    7 wiring diagram 12 cs-mc12dkv cu-2c24dkv.

  • Page 13: 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 14

    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 15

    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 16

    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 17

    8.4.5. Anti-freezing control • if the temperature of the indoor heat exchanger falls below 2°c 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 of...

  • Page 18

    • 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 19

    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-mc12dkv s hi 1300...

  • Page 20

    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 21

    • 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 22

    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 23

    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 24

    8.11. Ionizer operation • the ionizer operation is to provide fresh air effect to user by producing minus ion in discharge air. 8.11.1. Operation control 1. Ionizer individual operation a. When air-conditioner unit is at “off” condition (standby) and ion operation button at the remote control is pre...

  • Page 25

    8.11.2. Error detection control • the error detection control is to inform user that error occurs at ionizer system and repairing job will be needed. • there are two types of error detection control: a. When ionizer is on − if ionizer feedback = lo for 24 times within 11hr 30min, ion led blinks cont...

  • Page 26: 9 Operating Instructions

    9 operating instructions 26 cs-mc12dkv cu-2c24dkv.

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    27 cs-mc12dkv cu-2c24dkv.

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    28 cs-mc12dkv cu-2c24dkv.

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    29 cs-mc12dkv cu-2c24dkv.

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    30 cs-mc12dkv cu-2c24dkv.

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    31 cs-mc12dkv cu-2c24dkv.

  • Page 32

    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 18 n.M (1.8 kgf.M) 42 n.M (4.2 kgf.M) 55 n.M (5.5 kgf.M) 3. Electric drill, hole core drill (ø7...

  • Page 33

    1. The equipment must be earthed. 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. 3. Carry out drainage piping as mentioned in ins...

  • Page 34

    Applicable piping kit cz-4f5, 7 10an (cs-mc12dk) 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 where drainage ca...

  • Page 35

    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 centre of installation plate should be at more than 450 mm at right and left of the wall. The distan...

  • Page 36

    3. For the embedded piping (this can be used for left rear piping & left bottom piping also.) 36 cs-mc12dkv cu-2c24dkv.

  • Page 37

    1. The inside and outside connecting cable can be connected without removing the front grille. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 mm 2 flexible cord, type designation 245 iec 57 or heavier cord. • ensure the color of wires of o...

  • Page 38

    How to take out front grille please follow the steps below to take out front grille if necessary such as when servicing. 1. Set the vertical airflow direction louver to the horizontal position. 2. Slide down the 2 caps on the front grille as shown in the illustration below, and then remove the 2 mou...

  • Page 39

    10.6. Outdoor unit 10.6.2. Install the outdoor unit • after selecting the best location, start installation according 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 str...

  • Page 40

    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 flare nut ...

  • Page 41

    The air which contains remaining moisture in the refrigeration cycle may cause a malfunction on the compressor. 1. To purge the air, push the pin on the gas side 3-way valve for three seconds using with a hexagonal wrench and set it free for one minute. • repeat this three times. 2. To balance the r...

  • Page 42

    10.6.6. Pipe insulation 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 tray-styrofoam. • ensure that water flows out from drain hose of the indoor unit. Evaluation of the p...

  • Page 43: 11 3-Way Valve

    11 3-way valve 3-way valve (liquid side) 3-way valve (gas side) works shaft position service port shaft position service port shipping closed closed closed closed (with valve cap) (with cap) (with valve cap) (with cap) air purging closed open closed open (installation and (clockwise) (connected mani...

  • Page 44

    11.1. Air purging required tools: hexagonal wrench, adjustable wrench, torque wrenches, wrench to hold the joints, gas leak detector, and charging set. 1. Recheck the piping connections. 2. Open the valve of the low pressure side of manifold gauge counter-clockwise for 10 seconds, and then close it....

  • Page 45

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

  • Page 46

    (re-installation) 1. Remove the cap nut from 3-way valves. • remove the cap nut from 3-way valves after carefully checked whether the piping connection was properly and certainly done. 2. Confirm that the valve in both 3-way valves are set to the closed position. 3. Connect the gas cylinder to the l...

  • Page 47

    (gas leakage) 1. Confirm that both the 3-way valves are set to the open position. 2. Connect the charge set to the gas side 3-way valve’s port. • leave the valve on the charge set closed. • connect the charge hose with the push pin to the service port. 3. Open the valves (lo side) on the charge set ...

  • Page 48

    (no refrigerant in the refrigeration cycle) 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 -76 cmhg [vacuum of 4 mmhg or less]. 3. Close the valve (lo side) on the charge set, turn off the vacuum ...

  • Page 49

    (after evacuation) 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. • if you are using a gas cylinder, also use a scale and reverse the cylinder so that the system can be charged wit...

  • Page 50: 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 taps on top and on the right side of me...

  • Page 51

    Fig. 4 − to remove the electronic controller. − remove the particular piece (fig. 4) − release cn-fm connector (fig. 4) − release cn-fb connector (fig. 4) − release cn-ion connector (fig. 4) • remove control board cover fig. 6 − remove the screw on the left side of the unit. (fig. 6) − pull the hook...

  • Page 52

    − remove the earth wire from the evaporator (fig. 7) − release the generator complete wire (green and red). (fig. 8) − remove 2 screws on the right and 1 screw at the left side of the control board. (fig. 7) − press down the hook on the left side of control board. (fig. 7) − then pull out the contro...

  • Page 53

    • 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 continuosly and not functionable. If this condition happens, try to reset the remote control by pushing the reset terminal with a pointing devic...

  • Page 54: 13 Troubleshooting Guide

    13.1. 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 fan. The normal outlet air te...

  • Page 55

    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 56: 14 Technical Data

    14 technical data 14.1. Thermostat characteristics 14.2. Cooling characteristic 56 cs-mc12dkv cu-2c24dkv.

  • Page 57

    14.3. Piping length characteristic cooling 57 cs-mc12dkv cu-2c24dkv.

  • Page 58

    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. 58 cs-mc12dkv cu-2c24dkv.

  • Page 59

    16 replacement parts list (indoor unit) ref. No. Part name & description qty. Cs-mc12dkv remarks 1 chassy complete 1 cwd50c1377 2 fan motor, ac 51w single 1 cwa921324 0 3 cross flow fan complete 1 cwh02c1031 4 bearing ass’y 1 cwh64k007 0 5 screw - cross flow fan 1 cwh4580304 6 evaporator 1 cwb30c175...

  • Page 60

    17 exploded view (outdoor 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. 60 cs-mc12dkv cu-2c24dkv.

  • Page 61

    18 replacement parts list (outdoor unit) no. Description & name q’ty cu-2c24dkv remarks 1 base pan ass’y 1 cwd50k2131a 2 compressor 2 2p19s236a1l 0 3 anti - vibration bushing 6 cwh50077 4 nut - compressor 6 cwh56000 5 packing 6 cwb81043 6 condenser 1 cwb32c1685 7 sound proof board 1 cwh151062 8 fan ...

  • Page 62

    19 electronic circuit diagram 1 2 3 4 c22 0.01 r58 10k auto sw r59 1k 9 8 7 6 5 4 3 2 1 10 bz01 bz e c b q01 c143xktx r55 1k r12 1k c02 0.01 r88 5.1k electronic control unit cn-ha c23 0.01 r60 10k c26 0.01 c25 0.01 c24 0.01 r07 10k r56 1k c01 0.01 r31 1k r78 10k c29 0.1 3 2 1 cn-sonic 1 2 r11 1k jp5...

  • Page 63

    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 64

    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 65

    Eh-4p 4 3 2 1 f1 ch1 vin gnd err c2 c1 q1 q2 q4 q5 r2 c e b 4.7k 10k e b c c3 r4 r3 r5 d2 z01 d4 c e b c8 d1 d3 r14 r13 r9 r15 r10 r102 -4.2kv r101 hv cn2 r12 c5 d5 c6 z02 c e b r6 t1 d101 d102 c101 c7 gnd cn3 high voltage ionizer schematic diagram 4/5 65 cs-mc12dkv cu-2c24dkv.

  • Page 66

    Schematic diagram 5/5 blue red mark compressor terminal yellow ac 220-230-240 v 50 hz single phase to indoor unit b outdoor unit terminal l n 1 2 3 1 2 3 to indoor unit olp a olp b y y y y capacitor a capacitor fan motor ry1 ry2 cn-ctl fm2 (y) fm1 (b) compressor a capacitor b compressor b magnetic r...

  • Page 67

    67 cs-mc12dkv cu-2c24dkv.

  • Page 68

    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 69

    19.1. Remote control 69 cs-mc12dkv cu-2c24dkv.

  • Page 70

    19.2. Print pattern indoor unit printed circuit board 70 cs-mc12dkv cu-2c24dkv.

  • Page 71

    71 cs-mc12dkv cu-2c24dkv.

  • Page 72

    19.3. Print pattern indicator printed circuit board 72 cs-mc12dkv cu-2c24dkv [phaam] printed in malaysia.