Order No. MAC0312077C3 Air Conditioner CS-C18CKR CU-C18CKR CS-C24CKR CU-C24CKR CONTENTS Page Page 1 Features 8.8. Airflow Direction Control 2 Functions 8.9. Delay ON Timer Control 3 Product Specifications 8.10. Remote Control Signal Receiving Sound 4 Dimensions 8.11. Ionizer Operation 5 Refrigeration Cycle Diagram...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 12.2. Cross Flow Fan and Indoor Fan Motor Removal 18 Replacement Parts List Procedures 19 Electronic Circuit Diagram 13 Troubleshooting Guide 19.1. REMOTE CONTROL 13.1. Refrigeration cycle system 19.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 2 Functions Remote Control Self illuminating button OFF / ON I TEMP. Operation OFF / ON Room Temperature Setting Cooling, Soft Dry Operation. MODE • Temperature Setting (16°C to 30°C) Operation Mode Selection Automatic Operation •...
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Indoor Unit AUTO OFF / ON Automatic Operation Button Random Auto Restart Control • Press for < 5s to operate Automatic • Operation is restarted randomly after operation mode. power failure at previous setting mode.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Outdoor Unit Compressor Reverse Rotation Protection Control • To protect compressor from reverse rotation when there is a 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-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8 Operation Details 8.1. Indoor Fan Speed Control • • • • Auto Fan Speed Control When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8.2. Cooling Mode Operation Cooling in operation according to Remote Control setting. Time Delay Safety Control (3 minutes) • • • • When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 2. QLo fan speed (Transistor Motor) 3. QLo fan speed (Induction Motor) Automatic Fan Speed Mode When Automatic Fan Speed is selected at Remote Control during cooling operation. • • • • Fan speed rotates in the range of Hi to Me.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Cooling Operation Time Diagram Quiet Operation Control (For Cooling Mode or cooling region of Soft Dry Mode) • • • • Purpose of this operation is to provide quite cooling operation compare to normal operation.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR • • • • Manual Fan Speed:- − − − − RPM control during Lo cool − − − − RPM control during Hi & Me cool • • • • Auto Fan Speed:- • • • • Quiet Mode Operation will stop if:- −...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8.3. Soft Dry Mode Operation • • • • The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and then Soft Dry operation will start. • • • • During Soft Dry operation, the Indoor Fan will operate at Lo- speed.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Soft Dry Operation Time Diagram Quiet Operation Control • • • • Same as Quiet Operation Control for Cooling Mode operation.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8.4. Air Circulation Mode Operation • • • • Fan operation only. Indoor fan speed selection by remote control and setting refer to Indoor Fan Speed Control. − − − − Manual Fan Speed Follow remote control setting −...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR • • • • The mode judging temperature and standard setting temperature can be increased by 2°C, by open the circuit of JX1 at indoor electronic controller. 8.6. Powerful Mode Operation • • • • Purpose of this operation is to obtain the setting temperature quickly.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8.8. Airflow Direction Control Vertical Airflow Direction Auto-Control • • • • When set a Airflow Direction Auto-Control with remote control, the louver swings up and down as shown in the diagram. • • • • The louver does not swing when the Indoor Fan Motor stops during operation at the upper limit.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Horizontal Airflow Direction manual Control • • • • When the manual Airflow Direction Selection Button is pressed, the automatic airflow is released and the airflow direction vane move left and right in the range shown in the diagram.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8.11. Ionizer Operation Purpose To provide fresh air effect to user by discharging minus Ion to air. Control Condition a. Ionizer Only Operation. 1. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at remote control is pressed.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 3. Ionizer operation status is not memorised by Micon. After OFF, when operation is “ON” again, air-conditioner operates without ionizer operation. However, during Cool mode etc + ionizer operation, if there is a power failure & then power resume, air conditioner shall on at that mode + ionizer operation.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Note: 1. 24 times checking: Actual Ion ON for 10s & OFF for 30 min continuously for 24 times. 2. 24 times count will be cleared when either one of the following conditions happen. a) 24 times count over, b) Ionizer cancel if press Ion button or power reset, c) Ion feedback signal is OK.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 8.11.3. Soft Starter (C24CK only) 1. When indoor relay is turn ON, starting capacitor will be turn ON through RY-C for ~ 1 second. After that reactor will be turn ON through RY-L and in the same time RY-C will turn OFF cause starting capacitor to be OFF.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10AN (C18CK, A18CK, RS-C18CK) CZ-52F5, 7, 10AN (C24CK, A24CK, RS-C24CK) SELECT THE BEST LOCATION INDOOR UNIT • • • • There should not be any heat source or steam near the unit.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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 (C18CK, C24CK, RS/RU-C18/24CK) or 5 ×...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR Connecting The Piping To Outdoor Unit Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (located at valve) onto the copper pipe.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR CAUTION • • • • If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure: • • • • If the leak stops when the piping connections are tightened further, continue working from step 3.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 10.3.6. CONNECT THE CABLE TO THE OUTDOOR UNIT 1. Remove the control board cover from the unit by loosening the screw. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 × 2.5 mm (C18CK, C24CK, RS/RU-C18/24CK) or 5 ×...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.1. Evacuation of the Equipment (For Europe & Oceania Destination) 11.1.1. Evacuation of Installation WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could in the following procedure.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.1.2. Pumping down Procedure: 1. Confirm that both the 2-way and 3-way valves are set to 6. Operate the air conditioner at the cooling cycle and the opened position. stop it when the gauge indicates 0 MPa (0 kg/cm •...
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.1.3. Evacuation of Re-installation WHEN REINSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could in the following procedure.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.1.4. Balance refrigerant of the 2-way, 3-way valves (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.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.1.5. 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 -0.1 MPa (-76 cmHg) [vacuum of 4 mmHg or less.]...
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.1.6. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the charging cylinder. This is different from previous procedures. Because you are • • • • Connect the charge hose which you disconnected from...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.2. Air Purging of the Piping and Indoor Unit 11.2.1. Air purging (Installation) Required tools: hexagonal wrench, adjustable wrench, torque The air in the indoor unit and in the piping must be purged. If air wrenches, wrench to hold the joints and gas leak detector.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.2.2. Pumping down (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to 5. Set the 2-way valve to the close position. the opened position. • • • • Remove the valve stem caps and confirm that the valve 6.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.2.3. Re-air purging (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to 5. Discharge the refrigerant. the closed position. • • • • Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 3 to 5 kg/cm (0.3 to 0.5 MPa)
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.2.4. Balance refrigerant of the 2-way, 3-way valves (Gas leakage) 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.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.2.5. Evacuation (Installation) (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 -0.1 MPa (-76 cmHg) [vacuum of 4 mmHg or less.]...
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 11.2.6. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the charging cylinder. This is different from previous procedures. Because you are • • • • Connect the charge hose which you disconnected from...
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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.
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 6. Remove the Bearing. (Fig. 9) 7. Remove the screws at the left of the Evaporator. (Fig. 9) Fig. 9 8. Push up the Evaporator and pull out the Cross Flow Fan from shaft. By then, Fan Motor can be taken out. (Fig. 10).
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CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR • • • • Remote Control Reset When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work. If this happen, remove the cover of the remote control and you will find a resetting terminal, and by shorting it with a minus screwdriver, it will return to normal.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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.
CS-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 15 Exploded View 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-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 17 Exploded View 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-C18CKR CU-C18CKR / CS-C24CKR CU-C24CKR 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.