CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 2 Functions 2.1. Remote Control OFF / ON TEMP. Operation Start/Stop Room Temperature Setting Cooling, Soft Dry Operation. MODE • Increase or decrease set temperature Operation Mode Selection (16°C to 30°C) • AUTO Automatic Operation Automatic Operation •...
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 2.2. Indoor Unit AUTO OFF / ON Automatic Operation Button Quiet Operation • Press for < 5 second to operate Automatic • To provide quiet operation. operation mode.Use when the remote control cannot be used.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 2.3. Outdoor Unit Compressor Reverse Rotation Protection Control • To protect compressor from reverse rotation when there is an instantaneous power failure. Overload Protector • Inner protector. 60 Secs. Forced Operation Control • Once the compressor is activated, it does not stop within the first 60 secs.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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:- −...
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 2. Narrowing 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°, 18°, 22°, 27° to 10°, 13°, 16°, 19°, 22°...
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 8.5. Indoor Fan Speed Control • Indoor Fan Speed can be set using remote control. 8.5.1. Fan Speed Rotation Chart COOL/ DRY CS-C24DKV CS-C18DKV S Hi 1590 1420 1530 1360 1390 1250 1330 1220 1250...
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV • 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 8.7.2. Manual Control • 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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 and Fan operations will turn on.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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 −...
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10AN (C18DK) CZ-52F5, 7, 10AN (C24DK) SELECT THE BEST LOCATION INDOOR UNIT • There should not be any heat source or steam near the unit.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 10.2. Indoor Unit 10.2.1. SELECT THE BEST LOCATION 10.2.3. 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 3. For the embedded piping...
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 10.2.5. 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 3 × 2.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 10.3. Outdoor Unit 10.3.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section) 10.3.2. 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 10.3.4. AIR PURGING OF THE PIPINGS AND INDOOR UNIT 1) Checking a gas leakage 1. Remove the service-port cap from both 3-way valves. 2. Connect the Manifold gauge set to the service port of Liquid side 3-way valve.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 10.3.6. 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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)
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 11.1. Air Purging of the Piping and Indoor Unit 11.1.1. Air purging Required tools: Hexagonal wrench, adjustable wrench, The air in the indoor unit and in the piping must be purged. If air torque wrenches, wrench to hold the...
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 11.1.2. 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 0.1 MPa.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 11.1.3. 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 11.1.4. Balance refrigerant of the 3-way valves Procedure: 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 11.1.5. Evacuation (No refrigerant in the refrigeration cycle) Procedure: 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 11.1.6. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the gas charging cylinder. 4. Immediately disconnect the charge hose from the 3-way valve’s service port. • Connect the charge hose which you disconnected from •...
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 12 Servicing Information Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 12.2. Cross Flow Fan and Indoor Fan Motor Removal Procedures 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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...
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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 the button.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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...
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 15 Exploded View (Indoor Unit) 15.1. CS-C18DKV CS-C24DKV 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.
CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 17 Exploded View (Outdoor Unit) 17.1. CU-C18DKV CU-C24DKV 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.
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV SCHEMATIC DIAGRAM 4/4 C18DK COMPRESSOR MOTOR CAPACITOR CAPACITOR BR OR Y TO INDOOR POWER SUPPLY TEMPERATURE FUSE C24DK TO OUTDOOR COMPRESSOR MOTOR CAPACITOR CAPACITOR TO INDOOR HIGH VOLTAGE IONIZER R101 T1 D101 R102 D102 EH-4P C101 -4.2kV...
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CS-C18DKV CU-C18DKV / CS-C24DKV CU-C24DKV 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.