CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.4. Automatic Operation 12.3. Indoor Fan Motor And Cross Flow Fan Removal 8.5. Operation Control Procedures 8.6. Indoor Fan Speed Control 12.4. Auto OFF/ON Button 8.7. Outdoor Fan Speed Control 12.5. Remote Control Reset 8.8.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 2.2. Indoor Unit AUTO OFF / ON Automatic Operation Button Random Auto Restart Control • Unit will be restarted, when resume from power • Press for < 5 second to operate Automatic failure, at previous setting.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 3 Product Specifications 3.1. CS-A7DKD CU-A7DKD Unit Indoor Unit Outdoor Unit Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 220 - 230, 50 Cooling Capacity kW (BTU/h) 2.00 - 2.00 (6,820 - 6,820)
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / Unit Indoor Unit Outdoor Unit Fan Motor Description Cross-flow Fan Propeller Fan Material AS + Glass Fiber 20% PP Resin Type Induction (4-poles) Induction (6-poles) Input 60.5 - 66.0 66 - 74.8...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 3.2. CS-A9DKD CU-A9DKD Unit Indoor Unit Outdoor Unit Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 220 - 230, 50 Cooling Capacity kW (BTU/h) 2.65 -2.65 (9,040 - 9,040) Heating Capacity kW (BTU/h) 2.80 - 2.85 (9,550 - 9,720)
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / Unit Indoor Unit Outdoor Unit Fan Motor Description Cross-flow Fan Propeller Fan Material AS + Glass Fiber 20% PP Resin Type Induction (4-poles) Induction (6-poles) Input 60.5 - 66.0 66 - 74.8...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 3.3. CS-A12DKD CU-A12DKD Unit Indoor Unit Outdoor Unit Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 220 - 230, 50 Cooling Capacity kW (BTU/h) 3.52 - 3.54 (12,000 - 12,100)
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / Unit Indoor Unit Outdoor Unit Fan Motor Description Cross-flow Fan Propeller Fan Material AS + Glass Fiber 20% PP Resin Motor Type Induction (4-poles) Induction (6-poles) Input 60.5 - 66.0 71.5 - 80.3...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8 Operation Details 8.1. Heating Operation • Heating operation can be set using remote control. • This operation is applied to warm the room temperature reaches the setting temperature set on the remote control.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.2. 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.3. 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.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.4. Automatic Operation • Automatic operation can be set using remote control. • This operation starts to operate with indoor fan at SLo speed for 25 seconds to judge the intake air temperature.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / • The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the circuit of JX1 at indoor electronic controller. 8.5. Operation Control 8.5.1. Restart Control (Time Delay Safety Control) •...
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / (For 8.5.3. to 8.5.7. information applies only to Cooling and Soft Dry Operation) 8.5.3. 7 Minutes Time Save Control • The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the compressor ON temperature (A) and compressor OFF temperature (B) during the period.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / (For 8.5.8. to 8.5.14. information applies only to Heating Operation) 8.5.7. Anti-Dew Formation Control • Purpose is to prevent dew formation on indoor unit air discharge area. • When room temperature is constant (±1°C) the following conditions occur for 30 minutes continuously, anti-dew formation will activate: −...
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.5.9. Compressor Overload Protection Control Outdoor Fan Control • If the temperature of the indoor heat exchanger rises to 51°C, outdoor fan stops. The outdoor fan restarts when the indoor heat exchanger temperature falls to 49°C.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.5.12. Hot Start Control • Hot Start Control is to prevent cool air discharge into the room when heating operation start. • When Heating operation starts, Indoor fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.5.14. Deicing Control Deice starts to prevent frosting at outdoor heat exchanger. • Normal Deicing Deice operations detection commences after 30 minutes of Heating operation starts or 60 minutes after previous deice operation.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / Normal Deicing Time Diagram Overload Deicing Time Diagram...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.6. Indoor Fan Speed Control • Indoor Fan Speed can be set using remote control. 8.6.1. Fan Speed Rotation Chart Fan Speed (rpm) CS-A7DKD CS-A9DKD CS-A12DKD S Hi 1220 1270 1310...
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / • Auto Fan Speed during cooling operation: 1. Indoor fan will rotate alternately between off and on as shown in below diagram. 2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / • Auto Fan Speed during Heating operation. 1. Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature. 8.6.3. Manual Fan Speed Control • Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / (Heating Operation condition) Heating Operation • When the piping air temperature reaches 38°C, the louver is changed from upper to lower limit. When the piping air temperature falls to 35°C, the louver is changed from lower to upper limit.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / • Vertical Airflow Direction:- − In “Manual” setting, the vane will automatically shift down 5° lower than previous setting. − In “Auto” setting, the vane will automatically shift between upper and lower limit depending on the intake air temperature as Heating Mode, Airflow Direction Auto-Control.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.11. Quiet Operation • The Quiet operation is to provide quiet cooling/heating operation condition compare to normal operation. (Cooling and Soft Dry Operation condition) • Once the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around 2 dB(A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present sound level operation.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / (Heating Operation condition) • When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around 2 dB (Lo) or 3 dB (Hi, Me), against the present sound level operation.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.12. Ionizer Operation • The Ionizer operation is to provide fresh air effect to user by producing minus ion in discharge air. 8.12.1. 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 indoor fan operations will turn on.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 8.12.2. 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.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 10.2. Attached accessories 10.4. Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-3F5, 7AEN (C7DK, C9DK, A7DK, A9DK, ) CZ-4F5,7, 10AN (C12DK, A12DK) 10.3. Select the best location INDOOR UNIT • There should not be any heat source or steam near the unit.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 10.5.5. CONNECT THE CABLE TO THE INDOOR UNIT INSTALLATION OF SUPER ALLERU-BUSTER FILTER 1. The inside and outside connecting cable can be connected 1. Open the front panel. without removing the front grille.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 2. Set the vertical airflow direction louver to the horizontal position. 3. Slide down the 2 caps on the front grille as shown in the illustration at right, and then remove the 2 mounting screws.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / MODEL Piping size (Torque) Liquid C7DK, C9DK, A7DK, A9DK 3/8” (42 N.m) 1/4” (18 N.m) C12DK, A12DK 1/2” (55 N.m) 1/4” (18 N.m) Connecting The Piping To Outdoor Unit Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 10.6.4. EVACUATION OF THE EQUIPMENT WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. 1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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.
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / CHECK ITEMS Is there any gas leakage at flare nut connections? Has the heat insulation been carried out at flare nut connection? Is the connecting cable being fixed to terminal board firmly?
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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)
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 11.1. Air Purging of the Piping and Indoor Unit 11.1.1. 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 11.1.2. 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 11.1.3. 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 11.1.4. 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 11.1.5. 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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.
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / Fig. 5 Fig. 4 − Press the hook to the right then take out the PCB. (Fig. − To remove the electronic controller. − Release CN-FM connectors. (Fig. 4) − Release Ry-Pwr connector (black and brown) and Ac- −...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / − 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) −...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / − Long “beep”: Turn OFF remote control signal receiving sound. • After “Auto OFF/ON Button” is pressed, the 20s counter for various setting mode is restarted. 12.4.2. Select Remote Control Transmission Code •...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 13.2. Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current Cooling Mode Heating Mode Condition of the air conditoner Low Pressure High Pressure Electric current Low Pressure...
CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 15 Exploded View (Indoor Unit) 15.1. CS-A7DKD CS-A9DKD CS-A12DKD 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 17 Exploded View (Outdoor Unit) 17.1. CU-A7DKD CU-A9DKD 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 17.2. CU-A12DKD 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-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 18 Replacement Parts List (Outdoor Unit) <Model: CU-A7DKD / CU-A9DKD> REF. PART NAME & DESCRIPTION QTY. CU-A7DKD CU-A9DKD REMARKS ← CHASSY ASS’Y CWD50K2112 ← SOUND PROOF MATERIAL CWG302255 ← FAN MOTOR BRACKET CWD541075 ←...
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / <Model: CU-A12DKD> REF. NO. PART NAME & DESCRIPTION QTY. CU-A12DKD REMARKS CHASSY ASS’Y CWD50K2074 SOUND PROOF MATERIAL CWG302110 FAN MOTOR BRACKET CWD541030 SCREW - FAN MOTOR BRACKET CWH551059 FAN MOTOR CWA951117...
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CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12DKD / 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.
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