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Panasonic CS-C18DKD Service Manual

Summary of CS-C18DKD

  • Page 1

    1 features 2 2 functions 3 2.1. Remote control 3 2.2. Indoor unit 4 2.3. Outdoor unit 5 3 product specifications 6 3.1. Cs-c18dkd cu-c18dkd 6 3.2. Cs-c24dkd cu-c24dkd 8 © 2004 panasonic ha air-conditioning (m) sdn bhd (11969-t). All rights reserved. Unauthorized copying and distribution is a violati...

  • Page 2: 1 Features

    8.2. Soft dry operation 18 8.3. Automatic operation 19 8.4. Operation control 20 8.5. Indoor fan speed control 23 8.6. Outdoor fan speed control 24 8.7. Vertical airflow direction control 24 8.8. Horizontal airflow direction control 25 8.9. Powerful operation 25 8.10. Quiet operation 26 8.11. Ionize...

  • Page 3: 2 Functions

    2 functions 2.1. Remote control operation start/stop off / on room temperature setting temp. Operation mode selection • auto automatic operation • cool cooling operation • dry soft dry operation mode time / timer setting • hours and minutes setting. Clock setting • current time setting. Ionizer oper...

  • Page 4

    2.2. Indoor unit random auto restart control • unit will be restarted, when resume from power failure, at previous setting. Anti-freezing control • to prevent indoor heat exchanger from freezing. Ionizer operation • generate and discharge negative ion. Indoor fan speed control • manual control fan s...

  • Page 5

    2.3. Outdoor unit • to protect compressor from reverse rotation when there is an instantaneous power failure. 60 secs. Forced operation control • once the compressor is activated, it does not stop within the first 60 secs. However, it stops immediately with remote control stop signal. Overload prote...

  • Page 6: 3 Product Specifications

    3 product specifications 3.1. Cs-c18dkd cu-c18dkd unit cs-c18dkd cu-c18dkd power source (phase, voltage, cycle) , v, hz single, 220 - 230, 50 cooling capacity kw (btu/h) 5.30 (18,100) - 5.30 (18,100) moisture removal l/h (pint/h) 2.9 (6.1) airflow method outlet intake side view top view air volume l...

  • Page 7

    Unit cs-c18dkd cu-c18dkd refrigeration oil (cm 3 ) — suniso 4gsi refrigerant (r-22) g (oz) — 980 (34.6) thermostat — — protection device — inner protector capillary tube length mm — 596 flow rate l/min — 21.0 inner diameter mm — 1.9 air filter material style p.P. Honeycomb — capacity control capilla...

  • Page 8

    3.2. Cs-c24dkd cu-c24dkd unit cs-c24dkd cu-c24dkd power source (phase, voltage, cycle) , v, hz single, 220 - 230, 50 cooling capacity kw (btu/h) 7.03 (24,000) - 7.03 (24,000) moisture removal l/h (pint/h) 4.0 (8.5) airflow method outlet intake side view top view air volume lo m 3 /min (cfm) 13.9 (49...

  • Page 9

    Unit cs-c24dkd cu-c24dkd protection device — inner protector capillary tube length mm — 754 flow rate l/min — 22.0 inner diameter mm — 2.0 air filter material style p.P. Honeycomb — capacity control capillary tube compressor capacitor µf, vac — 45 µf, 400/440vac fan motor capacitor µf, vac — 3.5 µf,...

  • Page 10: 4 Dimensions

    4 dimensions 4.1. Indoor unit & remote control 4.1.1. Cs-c18dkd cs-c24dkd 10 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 11

    4.2. Outdoor unit 4.2.1. Cu-c18dkd 11 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 12

    4.2.2. Cu-c24dkd 12 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 13

    5 refrigeration cycle diagram 13 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 14: 6 Block Diagram

    6 block diagram 14 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 15: 7 Wiring Diagram

    7 wiring diagram cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd 15.

  • Page 16

    Cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd 16.

  • Page 17: 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 18

    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 19

    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 refering to the below standard. • th...

  • Page 20

    8.4. Operation control (for 8.4.1. To 8.4.7. Information applies only to cooling and soft dry operation) 8.4.1. Restart control (time delay safety control) • when the thermo-off temperature (temperature which compressor stops to operate) is reached during:- − cooling operation - the compressor stops...

  • Page 21

    8.4.5. Compressor reverse rotation protection control • if the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and indoor heat exchanger is 2.5°c or less for continuous 2 minutes, compressor will stop and restart automatically. • time de...

  • Page 22

    2. Norrowing vertical airflow direction − during anti-dew condensation prevention, airflow direction auto-control angle change from 10° - 38° to 10° - 27° under cooling and soft dry operation mode. − during anti-dew condensation prevention, airflow direction manual control angle change from 10°, 14°...

  • Page 23

    8.5. Indoor fan speed control • indoor fan speed can be set using remote control. 8.5.1. Fan speed rotation chart speed / cool / dry c24dk c18dk s hi 1590 1420 hi 1530 1360 me 1390 1250 lo+ 1330 1220 lo 1250 1150 lo- 1100 980 s lo 860 780 q hi 1430 1260 q me 1290 1150 q lo 1150 1050 8.5.2. Automatic...

  • Page 24

    • 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 stopped with remote control, the discharge vent is reset, and stop at the closing position. • during cooling operation or soft dry operation, indoor fan motor ...

  • Page 25

    • when the vertical airflow direction is set to manual using the remote control, the automatic airflow is released and the airflow direction louver move up and down in the range shown in the diagram. • the louver can be adjusted by pressing the button to the desired louver position. • when stopped w...

  • Page 26

    • powerful operation stops when:- - powerful operation has operate for 15 minutes. - powerful mode button is pressed again. - stopped by off/on operation button. - timer off activates. - quiet mode button is pressed. - operation mode is changed. 8.10. Quiet operation (for cooling operation or coolin...

  • Page 27

    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 28

    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 29: 9 Operating Instructions

    9 operating instructions 29 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 30

    30 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 31

    31 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 32

    32 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 33

    33 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 34

    34 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 35

    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. Gauge manifold 3. Electric drill, hole core drill (ø70 mm) 7. Reamer 11. Thermometer 15. Torque wrench 18 n.M...

  • Page 36

    1. This 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 in...

  • Page 37

    Attached accessories applicable piping kit cz-4f5, 7, 10an (c18dk) 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...

  • Page 38

    10.2.1. Select the best location (refer to “select the best location” section) 10.2.2. 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 550 mm at right and left of the wall. The distan...

  • Page 39

    3. For the embedded piping 39 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 40

    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 3 × 2.5 mm 2 flexible cord, type designation 245 iec 57 or heavier cord. • ensure the colour of wires of ...

  • Page 41

    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. 2. Set the vertical airflow direction louver to the horizontal position. 3. Slide down the 3 caps on the front grille as shown in the illustration below...

  • Page 42

    • 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 strong wind and earthquake. Please fasten the installat...

  • Page 43

    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 the end of the charging hose with the push pin to the service port. 2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum p...

  • Page 44

    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 performance • operate the...

  • Page 45: 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 close (with valve cap) (with cap) (with valve cap) (with cap) (installation and closed open closed open re-installation) (clockwise) (connected ...

  • Page 46

    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 caps and service port caps for both 3-way valves. 3. Connect the charging cylinder to the manifold gauge as shown...

  • Page 47

    1. Confirm that both the 3-way valves are set to the open position. • remove the valve caps and confirm that the valve caps 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 and wait for 3 minutes, ...

  • Page 48

    11.1.3. Re-air purging 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 valve in both 3-way valves are set to the close. 3. Connect the gas cylinder to the liquid-sid...

  • Page 49

    1. Confirm that both the 3-way valves are set to the open position. 2. Connect the manifold gauge to the gas side (low side) 3-way valve’s port. • leave the valve on the manifold gauge closed. • connect the manifold gauge to the service port. 3. Open the valves (low side) on the manifold gauge and d...

  • Page 50

    (no refrigerant in the refrigeration cycle) 1. Connect the vacuum pump to the manifold gauge’s centre hose. 2. Evacuation for approximately one hour. • confirm that the gauge needle has moved toward -0.01 mpa. 3. Close the valve (low side) on the manifold gauge, turn off the vacuum pump, and confirm...

  • Page 51

    11.1.6. Gas charging 1. Connect the charge hose to the gas 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 cylinder and press the check va...

  • Page 52: 12 Servicing Information

    1. The electronic controller, a signal receiver and an indicator (fig. 3) can be seen by the below steps: • remove the 3 caps and 3 screws at the bottom of the front grille. (fig. 1) • remove the front grille by releasing the 3 hooks at the top of the front grille. (fig. 1) • unhook the tabs at the ...

  • Page 53

    1. In order to remove the cross flow fan and indoor fan motor, control board need to be taken out by releasing all the connectors as indicated below. A. Release the earth wire screw. (fig. 5) b. Release the cn-th connector. (fig. 5) c. Release the cn-ion connector. (fig. 5) d. Release the cn-sonic c...

  • Page 54

    8. Push up the evaporator and pull out the cross flow fan from shaft. By then, fan motor can be taken out. (fig. 9) reminder - to reinstall the fan motor, put it back in place, adjust the position of the fan motor’s leadwire appropriately as shown in the fig. 7--- before installing the cross flow fa...

  • Page 55

    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 malfunctioning. • 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: 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 57

    13.1.1. 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 th...

  • Page 58: 14 Technical Data

    14 technical data 14.1. Thermostat characteristics 14.2. Operation characteristics 58 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 59

    59 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 60

    15 exploded view (indoor unit) 15.1. Cs-c18dkd cs-c24dkd 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-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 61

    16 replacement parts list (indoor unit) 16.1. Cs-c18dkd cs-c24dkd ref. No. Part name & description qty. Cs-c18dkd cs-c24dkd remarks 1 chassy complete 1 cwd50c1382 ← 2 fan motor 1 cwa981149 ← 0 3 cross flow fan complete 1 cwh02c1010 ← 4 screw - cross flow fan 1 cwh4580304 ← 5 bearing ass’y 1 cwh64k00...

  • Page 62

    17 exploded view (outdoor unit) 17.1. Cu-c18dkd 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. 62 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 63

    17.2. Cu-c24dkd 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. 63 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 64

    18 replacement parts list (outdoor unit) 18.1. Cu-c18dkd cu-c24dkd ref. No. Part name & description qty. Cu-c18dkd cu-c24dkd remarks 1 chassy ass’y 1 cwd50k2072 cwd50k2100 2 compressor 1 2ks314d5aa02 2js438d3ga02 0 3 anti - vibration bushing 3 cwh50049 cwh50055 4 nut - compressor mount 3 cwh4582065 ...

  • Page 65

    19 electronic circuit diagram 19.1. Indoor unit & outdoor unit schematic diagram 1/4 1 2 3 4 c13 0.01 r58 10k auto sw r59 1k display complete 9 supersonic complete cn-disp cn-disp 8 7 6 5 4 3 2 1 10 2 3 4 5 6 7 8 9 10 1 timer (org) power (grn) ionizer (grn) supersonic (blu) quiet (org) powerful (org...

  • Page 66

    Schematic diagram 2/4 r11 1k c02 0.01 µ r35 5.1k r20 r21 r22 r23 r24 r25 d07 d08 d09 d10 d11 d12 r18 r19 d05 q02 r64 6.2k r63 6.2k d06 p72 p73 p74 p75 p64 p65 p66 p67 p40/a00 p41/a01 p42/a02 p43/a03 p44/a04 p45/a05 p46/a06 p47/a07 p50/a8 p51/a9 ry-pwr drive signal p52/a10 p53/a11 p54/a12 p55/a13 p56...

  • Page 67

    Schematic diagram 3/4 test r54 1k r48 10k c10 0.1 µ r32 150k 4.096 mhz (47pf x 2) + r49 100k o g i c21 2.2 µ 50v c12 0.01 µ ic04 c23 0.1 µ c42 0.22 µ c45 0.22 µ d02 r08 5.1k r47 1k r01 100 Ω c18 0.022 µ r07 20k r42 20k d01 c24 0.01 µ r37 10k r38 jx1 c15 0.01 µ r43 r36 10k c31 0.01 µ r31 r56 r03 100 ...

  • Page 68

    Temperature fuse power supply blu 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 1 2 to outdoor c24dk to indoor red ...

  • Page 69

    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. 42 sec. Anti-freezing 4 min. ...

  • Page 70

    19.2. Remote control 70 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 71

    19.3. Print pattern indoor unit printed circuit board top view bottom view 71 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd.

  • Page 72

    19.4. Print pattern indicator & receiver printed circuit board top view bottom view 72 cs-c18dkd cu-c18dkd / cs-c24dkd cu-c24dkd [phaam] printed in malaysia.