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CONTENTS
CS-MC12DKV CU-2C24DKV
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© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No. MAC0503054C3
Air Conditioner
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Related Manuals for Panasonic CS-MC12DKV
Summary of Contents for Panasonic CS-MC12DKV
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Page 1: Table Of Contents
8.6. Outdoor Fan Speed Control 11.2. Pumping down 8.7. Vertical Airflow Direction Control 11.3. Evacuation 8.8. Horizontal Airflow Direction Control 11.4. Gas charging © 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law. -
Page 2: Features
CS-MC12DKV CU-2C24DKV 12 Servicing Information 14 Technical Data 12.1. Distinction of Lead Free (PbF) Printed Circuit Board 14.1. Thermostat characteristics 12.2. Indoor Electronic Controllers Removal Procedures 14.2. Cooling Characteristic 12.3. Indoor Fan Motor and Cross Flow Fan Removal 14.3. Piping Length Characteristic Cooling... -
Page 3: Functions
CS-MC12DKV CU-2C24DKV 2 Functions... - Page 4 CS-MC12DKV CU-2C24DKV...
- Page 5 CS-MC12DKV CU-2C24DKV Outdoor Unit Compressor Reverse Rotation Protection Control To protect compressor from reverse rotation when there is a instantaneous power failure. Overload Protector 2-stage OLP to protect the compressor. Overload Protector will trip when Temperature of compressor increases to 120 C.
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Page 6: Product Specifications
CS-MC12DKV CU-2C24DKV 3 Product Specifications 3.1. CS-MC12DKV CU-2C24DKV Unit Indoor unit Outdoor unit Power Source (Phase, Voltage, Cycle) Single ø, V, Hz Cooling Capacity (1 unit) (2 units) (BTU/h) 3.52 (12,000) 7.04 (24,000) Moisture Removal (1 unit) 2.0 (2 units) (Pin/h) (4.2) - Page 7 CS-MC12DKV CU-2C24DKV Unit Indoor unit Outdoor unit Fan Motor Description Cross-flow Fan Propeller Fan Material ASG32KI PPResin Type Induction (4-poles) Induction (6-poles) Input 55.0 170.8 Rated Output Fan Speed — Medium 1,080 — High 1,280 870 - 870 SuperHigh 1,310 —...
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Page 8: Dimensions
CS-MC12DKV CU-2C24DKV 4 Dimensions 4.1. Indoor Unit & Remote Control... -
Page 9: Outdoor Unit
CS-MC12DKV CU-2C24DKV 4.2. Outdoor Unit... -
Page 10: Refrigeration Cycle Diagram
CS-MC12DKV CU-2C24DKV 5 Refrigeration Cycle Diagram... -
Page 11: Block Diagram
CS-MC12DKV CU-2C24DKV 6 Block Diagram... -
Page 12: Wiring Diagram
CS-MC12DKV CU-2C24DKV 7 Wiring Diagram... -
Page 13: Operation Details
CS-MC12DKV CU-2C24DKV 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 temperature sensor, can be adjusted from 16°C to 30°C. -
Page 14: Soft Dry Operation
CS-MC12DKV CU-2C24DKV 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 temperature on the remote control. -
Page 15: Automatic Operation
CS-MC12DKV CU-2C24DKV 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. -
Page 16: Operation Control
CS-MC12DKV CU-2C24DKV 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. -
Page 17: Compressor Reverse Rotation Protection Control
CS-MC12DKV CU-2C24DKV 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 refrigerant in liquid form returning to the compressor. - Page 18 CS-MC12DKV CU-2C24DKV • 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, it operates at QLo + 160 rpm (However Quiet LED remains on).
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Page 19: Indoor Fan Speed Control
CS-MC12DKV CU-2C24DKV 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. - Page 20 CS-MC12DKV CU-2C24DKV 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.
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Page 21: Outdoor Fan Speed Control
CS-MC12DKV CU-2C24DKV • Auto Fan Speed during Soft Dry operation: 1. Indoor fan will rotate alternately between off and Lo-. 2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose. 3. When compressor at turn off condition for 6 minutes, indoor fan will start fan speed at Lo- to circulate the air in the room. -
Page 22: Horizontal Airflow Direction Control
CS-MC12DKV CU-2C24DKV 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 decreased 3°C internally against the present setting temperature (Lower temperature limit: 16°C). -
Page 23: Quiet Operation
CS-MC12DKV CU-2C24DKV 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 around 2 dB(A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present operation sound level. -
Page 24: Ionizer Operation
CS-MC12DKV CU-2C24DKV 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 pressed, the Ionizer operation will turn on. -
Page 25: Timer Control
CS-MC12DKV CU-2C24DKV 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 −... -
Page 26: Operating Instructions
CS-MC12DKV CU-2C24DKV 9 Operating Instructions... - Page 27 CS-MC12DKV CU-2C24DKV...
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Page 32: Installation Instructions
CS-MC12DKV CU-2C24DKV 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) - Page 33 CS-MC12DKV CU-2C24DKV 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.
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Page 34: Attached Accessories
CS-MC12DKV CU-2C24DKV 10.2. Attached accessories 10.4. Indoor/Outdoor Unit Installation Diagram 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. -
Page 35: Indoor Unit
CS-MC12DKV CU-2C24DKV 10.5. Indoor unit 10.5.1. SELECT THE BEST LOCATION 10.5.3. TO DRILL A HOLE IN THE WALL (Refer to “Select the best location” AND INSTALL A SLEEVE OF section) PIPING 1. Insert the piping sleeve to the hole. 10.5.2. HOW TO FIX INSTALLATION 2. - Page 36 CS-MC12DKV CU-2C24DKV 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
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Page 37: Connect The Cable To The Indoor Unit
CS-MC12DKV CU-2C24DKV 10.5.5. CONNECT THE CABLE TO THE INDOOR UNIT 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 flexible cord, type designation 245 IEC 57 or heavier cord. - Page 38 CS-MC12DKV CU-2C24DKV HOW TO TAKE OUT FRONT GRILLE AUTO SWITCH OPERATION Please follow the steps below to take out front grille if The below operations will be performed by pressing the necessary such as when servicing. “AUTO” switch. 1. Set the vertical airflow direction louver to the horizontal 1.
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Page 39: Outdoor Unit
CS-MC12DKV CU-2C24DKV 10.6. Outdoor unit 10.6.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section) 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. -
Page 40: Air Purging Of The Piping And Indoor Unit
CS-MC12DKV CU-2C24DKV 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. -
Page 41: Connect The Cable To The Outdoor Unit
CS-MC12DKV CU-2C24DKV 2) Air purging 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. -
Page 42: Pipe Insulation
CS-MC12DKV CU-2C24DKV 10.6.6. PIPE INSULATION 1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. 2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above. -
Page 43: 11 3-Way Valve
CS-MC12DKV CU-2C24DKV 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... -
Page 44: Air Purging
CS-MC12DKV CU-2C24DKV 11.1. Air purging The air in the indoor unit and in the piping must be purged. If air Required tools: Hexagonal wrench, adjustable wrench, remains in the refrigeration pipes, it will affect the compressor, torque wrenches, wrench to hold the reduce the cooling capacity, and could lead to a malfunction. -
Page 45: Pumping Down
CS-MC12DKV CU-2C24DKV 11.2. Pumping down Procedure: 1. Confirm that both the 3-way valves are set to the open 6. Operate the air conditioner at the cooling cycle and position. stop it when the gauge indicates 0 kg/cm • Remove the valve stem caps and confirm that the valve •... -
Page 46: Re-Air Purging
CS-MC12DKV CU-2C24DKV 11.2.1. Re-air purging (Re-installation) Procedure: 1. Remove the cap nut from 3-way valves. 5. Check for gas leakage. • Remove the cap nut from 3-way valves after carefully • Check the flare connections for gas leakage. checked whether the piping connection was properly and certainly done. - Page 47 CS-MC12DKV CU-2C24DKV 11.2.2. Balance refrigerant of the 3-way valves (Gas leakage) Procedure: 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.
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Page 48: Evacuation
CS-MC12DKV CU-2C24DKV 11.3. 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 -76 cmHg [vacuum of 4 mmHg or less]. -
Page 49: Gas Charging
CS-MC12DKV CU-2C24DKV 11.4. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the charging cylinder. 4. Immediately disconnect the charge hose from both the 3-way valve’s service ports. • Connect the charge hose which you disconnected from • Stopping partway will allow the refrigerant to be the vacuum pump to the valve at the bottom of the discharged. -
Page 50: Servicing Information
CS-MC12DKV CU-2C24DKV 12 Servicing Information 12.1. Distinction of Lead Free (PbF) Printed Circuit Board Printed circuit boards (manufactured) using lead free solder will have a PbF stamp on the Printed Circuit board. CAUTION • Pb free solder has a higher melting point than standard solder; typically the melting point is 50 - 70°F (30 - 40°C) higher. -
Page 51: Indoor Fan Motor And Cross Flow Fan Removal Procedures
CS-MC12DKV CU-2C24DKV − Release CN-TH connector (Fig. 4) − Release CN-STM connector (Fig. 4) − Release CN-REC/DISP connector (Fig. 4) Fig. 4 − To remove the electronic controller. − Remove the particular piece (Fig. 4) − Release CN-FM connector (Fig. 4) Fig. -
Page 52: Auto Off/On Button
CS-MC12DKV CU-2C24DKV − Remove the earth wire from the evaporator (Fig. 7) − Remove the cross flow fan bushing from the chassis. (Fig. 9) − Release the generator complete wire (green and red). − Loosen the fan boss screw at the cross flow fan. (Fig. 9) (Fig. -
Page 53: Remote Control Reset
CS-MC12DKV CU-2C24DKV 12.4.2. Remote Control Transmission Code • There are 4 type of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit will only operate when received signal with same transmission code from remote control. This could prevent signal inteference when there are 2 or more indoor unit installed nearby together. -
Page 54: Troubleshooting Guide
CS-MC12DKV CU-2C24DKV 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. -
Page 55: Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current
CS-MC12DKV CU-2C24DKV 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... -
Page 56: Technical Data
CS-MC12DKV CU-2C24DKV 14 Technical Data 14.1. Thermostat characteristics 14.2. Cooling Characteristic... -
Page 57: Piping Length Characteristic Cooling
CS-MC12DKV CU-2C24DKV 14.3. Piping Length Characteristic Cooling... -
Page 58: Exploded View (Indoor Unit)
CS-MC12DKV CU-2C24DKV 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. -
Page 59: Replacement Parts List (Indoor Unit)
CS-MC12DKV CU-2C24DKV 16 Replacement Parts List (Indoor Unit) REF. NO. PART NAME & DESCRIPTION QTY. CS-MC12DKV REMARKS CHASSY COMPLETE CWD50C1377 FAN MOTOR, AC 51W SINGLE CWA921324 CROSS FLOW FAN COMPLETE CWH02C1031 BEARING ASS’Y CWH64K007 SCREW - CROSS FLOW FAN CWH4580304... -
Page 60: Exploded View (Outdoor Unit)
CS-MC12DKV CU-2C24DKV 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. -
Page 61: Replacement Parts List (Outdoor Unit)
CS-MC12DKV CU-2C24DKV 18 Replacement Parts List (Outdoor Unit) DESCRIPTION & NAME Q’TY CU-2C24DKV REMARKS BASE PAN ASS’Y CWD50K2131A COMPRESSOR 2P19S236A1L ANTI - VIBRATION BUSHING CWH50077 NUT - COMPRESSOR CWH56000 PACKING CWB81043 CONDENSER CWB32C1685 SOUND PROOF BOARD CWH151062 FAN MOTOR BRACKET... -
Page 62: Electronic Circuit Diagram
CS-MC12DKV CU-2C24DKV 19 Electronic Circuit Diagram CS-MC12DKV CU-2C24DKV SCHEMATIC DIAGRAM 1/5 ELECTRONIC CONTROL UNIT Auto C143XKTX BZ01 SW01 R0 7 R1 1 0.01 R1 2 5.1k 0.01 CN-SONIC DISPLAY COMPLETE IC401 0.01 R401 0.01 0.01 C401 R1 5 6.3V CN-DISP... - Page 63 CS-MC12DKV CU-2C24DKV SCHEMATIC DIAGRAM 2/5 3XKTX 1000p R1 0 R1 8 R1 9 R2 0 R2 1 R2 2 R2 3 R2 4 R2 5 RY-PWR DRIVE SIGNAL STEPPING MOTOR AUTO OPERATION DRIVE TEST RUN SIGNAL REMOTE CONTROL SOUND INTP2...
- Page 64 CS-MC12DKV CU-2C24DKV SCHEMATIC DIAGRAM 3/5 R4 8 IC04 IC03 REGULATOR REGULATOR DB01 3300 1.3k C143XKTX RY-PWR R2 9 1.6k 4.7k FUSE T 2A L 250V TEMPERATURE ZNR01 0.047 FUSE AC-WHT SSR01 C143XKTX 4.7k 125 H OUTDOOR R4 1 0.01 150k 0.047...
- Page 65 CS-MC12DKV CU-2C24DKV SCHEMATIC DIAGRAM 4/5 HIGH VOLTAGE IONIZER R101 T1 D101 R102 CH 1 D102 R1 3 EH-4 P C101 -4.2kV R1 5 4.7k R1 0 R1 4 R1 2...
- Page 66 CS-MC12DKV CU-2C24DKV SCHEMATIC DIAGRAM 5/5 INDOOR UNIT AC 220-230-240 V YELLOW 50 Hz TO INDOOR SINGLE PHASE UNIT B OUTDOOR UNIT TERMINAL BLUE MARK COMPRESSOR TERMINAL CAPACITOR A OLP A BL BR CAPACITOR B MAGNETIC RELAY A OLP B CN-CTL...
- Page 67 CS-MC12DKV CU-2C24DKV...
- Page 68 CS-MC12DKV CU-2C24DKV 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.
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Page 69: Remote Control
CS-MC12DKV CU-2C24DKV 19.1. Remote Control... -
Page 70: Print Pattern Indoor Unit Printed Circuit Board
CS-MC12DKV CU-2C24DKV 19.2. Print Pattern Indoor Unit Printed Circuit Board... - Page 71 CS-MC12DKV CU-2C24DKV...
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Page 72: Print Pattern Indicator Printed Circuit Board
CS-MC12DKV CU-2C24DKV 19.3. Print Pattern Indicator Printed Circuit Board [PHAAM] Printed in Malaysia...