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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 12.2. Relationship Between The Condition Of The Air 14.1. CS-E18EKK CU-E18EKK Conditioner And Pressure And Electric Current 14.2. CS-E21EKK CU-E21EKK 12.3. Breakdown Self Diagnosis Function 14.3. Sensible Capacity Chart 12.4. Error Codes Table 15 Exploded View And Replacement Parts List 13 Disassembly and Assembly Instructions 15.1.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 1 Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. • Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 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-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9 Installation Instructions 9.1. Select The Best Location INDOOR UNIT Indoor/Outdoor Unit Installation Diagram • There should not be any heat source or steam near the unit. • There should not be any obstacles blocking the air circulation.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9.2. Indoor Unit 9.2.1. HOW TO FIX INSTALLATION 9.2.2. TO DRILL A HOLE IN THE WALL PLATE AND INSTALL A SLEEVE OF PIPING The mounting wall is strong and solid enough to prevent it from the vibration.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9.2.4. INDOOR UNIT ELECTRICAL WIRING 1. Remove the control board metal cover. 2. Unscrew the conduit cover & fix the conduit connector to conduit cover with lock nut, then secure it against chassis. 3. Connecting wire between indoor unit and outdoor unit shall be UL listed or CSA approved 4 ×...
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9.2.5. INSTALLATION OF SUPER ALLERU-BUSTER FILTER 1. Open the front panel. 2. Remove the air filter. 3. Put Super alleru-buster filter into place as shown in illustration at right. 9.2.6. HOW TO TAKE OUT FRONT GRILLE Please follow the steps below to take out front grille if necessary such as when servicing.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9.3. Outdoor Unit 9.3.1. 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 (ø10 mm).
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9.3.3. 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 side of a charging set and the service port of the 3-way valve.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 9.3.4. OUTDOOR UNIT ELECTRICAL WIRING 1. Remove Top panel. 2. Remove Control Board Cover. 3. Remove Plugs. 4. Fix the conduit connectors to the conduit holes with lock- nuts, then secure them. 5. Connecting wire between indoor unit and outdoor unit should be UL listed or CSA approved 4 x AWG16 wire.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 10 Operation And Control 10.1. Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK b. Quiet operation stop condition 1. When one of the following conditions is satisfied, quiet operation stops: a. Powerful button is pressed. b. Stop by OFF/ON switch. c. Timer “off” activates. d. Quiet button is pressed again.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK a. Powerful button is pressed. b. Stop by OFF/ON switch. c. Timer “off” activates. d. Quiet button is pressed again. 2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 10.1.5. ON Timer Control ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 10.2. Protection Control 10.2.1. Time Delay Safety Control • Compressor will not start for three minutes after stop of the operation. 10.2.2. 30 Seconds Forced Operation • Once compressor starts the operation, it will not stop its operation for 30 seconds. However, it can be stopped with the remote controller or the Auto button on the indoor unit.
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 10.2.7. Compressor Protection Control (Refrigeration Cycle Abnormality) In cooling and Dry operations 1. When compressor is operated continuously for 5 minutes in the maximum cooling power: a running current of 0.7 - 1.4A and “[Indoor intake air temperature] - [Indoor heat exchanger temperature]” < 4°C, compressor will be stopped.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 11 Servicing Mode 11.1. Auto Switch Operation The below operations will be performed by pressing the “AUTO” switch. 1. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is pressed and release before 5 sec..
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 12 Troubleshooting Guide 12.1. 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-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 12.2. 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 High Pressure Electric current...
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 12.3. Breakdown Self Diagnosis Function 12.3.1. Self Diagnosis Function (Three Digits Alphanumeric Code) • Once abnormality has occurred during operation, the unit If no codes are matched, power LED will light up for 0.5 will stop its operation, and Timer or both Timer and ION seconds and no sound will be heard.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 13 Disassembly and Assembly Instructions • Caution! When handling electronic controller, be careful of electrostatic discharge. • Be sure to return the wiring to its original position. • There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after power has been turned off.
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 14 Technical Data 14.1. CS-E18EKK CU-E18EKK Cooling Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature: 27/19 °C Remote control setting: HI fan, COOL 16 °C Compressor frequency: rated cooling Voltage: 208 ~ 230 V...
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK Heating Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature: 20 °C Remote control setting: HI fan, HEAT 30 °C Compressor frequency: rated heating Voltage: 208 ~ 230 V...
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 14.2. CS-E21EKK CU-E21EKK Cooling Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature: 27/19 °C Remote control setting: HI fan, COOL 16 °C Compressor frequency: rated cooling Voltage: 208 ~ 230 V...
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CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK Heating Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature: 20 °C Remote control setting: HI fan, HEAT 30 °C Compressor frequency: rated heating Voltage: 208 ~ 230 V...
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 15 Exploded View And Replacement Parts List 15.1. CS-E18EKK CS-E21EKK 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-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK 15.3. CU-E18EKK CU-E21EKK 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.