Indoor Fan Speed Selection • • Medium- • Medium • Medium+ • High • Automatic Fan Speed AUTO CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE AUTO SPEED HEAT COOL TIMER TIMER OFF/ON MODE FAN SPEED POWERFUL AUTO TEMP AIR SWING...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2.2. Indoor Unit Automatic Operation Switch • To run automatic operation, force cooling or heating operation, or change remote control signal type. Operation Indication Lamps (LED) • (Green) ... Lights up in operation, POWER •...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2.3. Outdoor Unit Time Delay Safety Control 30 seconds Forced Operation Overload Protection Control Total Running Current Control Compressor Overheating Prevention Control IPM (Power Transistor) Overheating Protection Control Low Operation Frequency Protection Control...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3 Product Specifications 3.1. CS-E15DB4EW CU-E15DBE Cooling Capacity Heating Capacity Moisture Removal Power Source (Phase, Voltage, Cycle) Airflow Method Air Volume Noise Level Electrical Data Input Power Running Current Starting Current Piping Connection Port...
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Refrigerant Control Device Refrigeration Oil Refrigerant (R410A) Thermostat Protection Device • Specifications are subjected to change without notice for further improvement. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Unit CS-E15DB4EW inch G (gas side) ; 1/2” inch L (liquid side) ; 1/4”...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3.2. CS-E18DB4EW CU-E18DBE Cooling Capacity Heating Capacity Moisture Removal Power Source (Phase, Voltage, Cycle) Airflow Method Air Volume Noise Level Electrical Data Input Power Running Current Starting Current Piping Connection Port (Flare piping)
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Size (W × H × L) Refrigerant Control Device Refrigeration Oil Refrigerant (R410A) Thermostat Protection Device • Specifications are subjected to change without notice for further improvement. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Unit CS-E18DB4EW 0.193 —— inch (mm) 10 - 1/4 (260)
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3.3. CS-E21DB4ES CU-E21DBE Cooling Capacity Heating Capacity Moisture Removal Power Source (Phase, Voltage, Cycle) Airflow Method Air Volume Noise Level Electrical Data Input Power Running Current Starting Current Piping Connection Port (Flare piping)
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Size (W × H × L) Refrigerant Control Device Refrigeration Oil Refrigerant (R410A) Thermostat Protection Device • Specifications are subjected to change without notice for further improvement. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Unit CS-E21DB4ES 0.193 —— inch (mm) 10 - 1/4 (260)
8.1.1. Temperature Shifting Flow The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.1.2. Cooling Operation 8.1.2.1. Thermostat control • Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.5°C. • Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.
The operation mode chart for this example is as shown in below figure and the operation mode to be performed will depend on indoor intake air temperature and outdoor air temperature at the time when the judgment is made. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Temperature shifts (°C)
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.1.6. Indoor Fan Motor Operation A. Basic Rotation Speed (rpm) • Required rotation speed for fan is set to respond to the remote control setting (10 rpm unit) [Cooling, Dry, Fan] Remote Control —...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2. Heating ii. Auto Fan Speed 1. Cooling...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2. Heating Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm. • If move from Maximum, the fan speed no change. • In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm.
Outdoor fan motor is operated with 15 fan speed. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation for speed no.8. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 1 → 2 → 3 4 →...
2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position.
This is to reduce sound of Hi, Me, Lo for 3dB. 2. Fan speed for quiet operation is -1 step from setting fan speed. 3. Fan Speed Auto Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.1.10. Powerful Mode Operation When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly. (a) Cooling Operation (b) Soft Dry Operation (c) Heating Operation 8.1.11.
8.1.12. Auto Restart Control 1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.2. Protection Control Features 8.2.1. Protection Control For All Operations 8.2.1.1. Time Delay Safety Control 1. The compressor will not start for three minutes after stop of operation. 2. This control is not applicable if the power supply is cut off for 20 seconds and on again or after 4-way valve deices condition.
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20 Hz for heating mode operation. Temperature, T, for: Indoor intake air (°C) Outdoor air (°C) Indoor heat exchanger (°C) CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Cooling/Soft Dry Heating 14 or T 14 or T...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.2.2. Protection Control For Cooling & Soft Dry Operation 8.2.2.1. Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
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Priority is given to the which is larger when freeze prevention down status and spray prevention down status are transmitted simultaneously. In the case of spray status 0, it is referred to as maxFc. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Control contents Relative control domain Usually, control...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.2.3. Protection Control For Heating Operation 8.2.3.1. Intake Air Temperature Control Compressor will operate at Max freq 94 (E15D), 128 (E18D, E21D) Hz if either one of the below conditions occur: 1. When the indoor intake air temperature is less than 21°C and remote control setting fan speed is lower Me-.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.2.3.4. Deice Control • Deice starts to prevent frosting at outdoor heat exchanger. • Deice operation detection commences after minimum 60 minutes of Heating Operation. • The outdoor heat exchanger temperature drops below 3°C for long period (minimum 40 minutes) during compressor is in...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 10 Installation And Servicing Air Conditioner Using R410A 10.1. Outline 10.1.1. About R410A Refrigerant 1. Converting air conditioners to R410A Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been...
Start brazing as soon as you have opened the vacuum pack, and begin the vacuuming operation within 2 hours. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Table 3 Tools for installation, transferring or replacement...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 10.2.2. R410A Tools 1. Copper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type)) • This gauge makes it easy to set the clearance for the copper tube to 1.0-1.5 mm from the clamp bar of the...
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• For detecting small amounts of gas leakage, use the electric gas leak detector for HFC refrigerant. (Detection sensitivity with R410A is about 23 g/year). CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Fig. 4 Manifold gauge charging hose Conventional hoses 3.4 MPa (35 kgf/cm...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8. Electronic scale for refrigerant charging • Because of the high pressure and fast vaporizing speed of R410A, the refrigerant cannot be held in a liquid phase inside the charging cylinder when charging is...
When you are removing the charging hose from the service port, it will come off more easily if you close this valve. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Fig. 12 Vacuum pump air purging configuration...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 10.4.2. Transferring (Using New Refrigerant Piping) 1. Removing the unit a. Collecting the refrigerant into the outdoor unit by pumping down The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the temperature of the room is low.
11. Quickly remove the charging hose from the service port. (6) If you stop midway through, the refrigerant that is in the cycle will be discharged. 12. After putting on the caps for the service port and operating valve, inspect around the caps for a gas leak. (6)(7) CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Fig. 13 Re-charging refrigerant...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 10.4.6. Brazing As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry nitrogen gas (N ) flow.
11. Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with other electrical appliances. Otherwise, it will cause fire or electrical shock. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE WARNING...
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2. Power supply connection to the room air conditioner. Connect the power supply cord of the room air conditioner to the mains using one of the following method. Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency.
3. Recommended installation height for indoor unit shall be at least 2.5 m. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE • This illustration is for explanation purposes only. The indoor unit will actually face a different way.
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− Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily steam which should not flow into the suction of the air conditioner. − Make enough distance from the cooking room to install the air conditioner in such place where it may not suck in oily steam.
6. Connect pipe to the service valve or ball valve which is located below the outdoor unit. 7. After completed the piping connection, be sure to check if there is gas leakage in indoor and outdoor connection. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE...
Drain Test The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain up motor operation. • Connect the main drain pipe to exterior and leave it provisionally until the test comes to an end.
2. Precautions in high humidity circumstance. This air conditioner has been tested according to the “JIS Standard Conditions with Mist” and have been confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C), water drops are liable to fall.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 11.2.6. CONNECTING THE CABLE TO THE INDOOR • Remove the mounting screw, remove the control box cover, and then connect the wires by following the procedure given in the illustration. 11.2.7. INSTALLATION OF DECORATIVE PANEL The decorative panel has its installation direction.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3. Fit the decorative panel and ceiling wall together and confirm no gap in between. Readjust indoor unit height, if there is a gap between ceiling wall and decorative panel. 4. Open the indoor control box cover. (2 pcs) 5.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 11.3. Outdoor Unit 11.3.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section) 11.3.2. INSTALL THE OUTDOOR UNIT • After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.
11.3.4. 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.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 11.3.5. CONNECT THE CABLE TO THE OUTDOOR UNIT (FOR DETAIL REFER TO WIRING DIAGRAM AT 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 4 × 1.5 mm type designation 245 IEC 57 or heavier cord.
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As to parts to be sold separately • With regards to installation of the parts sold separately, follow the installation manual which is provided with the parts sold separately. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Remo-Con No. A (Default)
Below are the methods used to obtain rated compressor operating specification. (a) Cooling (i) Press the Auto button continuously for 5 seconds or less than 8 seconds, the air conditioner starts operation at Cooling rated frequency. (“beep” will be heard at the 5th second.) (ii) Short the service terminal (CN-S) of the outdoor printed circuit board.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Troubleshooting Air Conditioner 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-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 1. Relationship between the condition of the air conditioner and pressure and electric current Condition of the air conditoner Low Pressure Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer Short circuit in the...
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Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is changed from one “beep” to four “beep” sounds. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Abnormality Emergency...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 12.3. Remote Control Remote Control Reset • When the batteries are inserted for the first time or the batteries are replaced, you may notice the indications at remote control’s display screen blink continuously and not functionable.
12.4. Auto OFF/ON Button • The “Auto OFF/ON” button is used to operate the air conditioner if remote control is misplaced or malfunctioning. • Auto operation is started once “Auto OFF/ON” button is pressed. • Forced cooling operation is possible by pressing the “Auto OFF/ON” button for more than 5 seconds where “beep” sound is heard, then release the button.
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 12.5. Disassembly of Parts 1. Open the Intake Grille from the Front Grille by moving the catchers to center (Fig. 1). 2. Remove the Control Board Cover by removing the screws (Fig. 2).
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7. Remove the Turbo Fan by removing the bolt (Fig. 7). 8. Remove the Fan Motor by release the Fan Motor lead wire connectors and Fan Motor screws (Fig. 8). CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Fig. 5 Fig. 6 Fig.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Outdoor Electronic Controller Removal Procedure 1. Remove the top panel and front panel Fig. 9 2. Remove the Outdoor Electronic Controller Fig. 10 Fig. 12 Caution! When handling electronic controller, be careful of electrostatic discharge.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 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-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 14.2. CZ-BT20E (Front Grille Complete) 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-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 15 Replacement Parts List (Indoor Unit) 15.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES REF. NO. PARTS NAME & DESCRIPTION BASE PAN ASS’Y INNER POLYSTYRENE COMPLETE CABINET SIDE PLATE ASS’Y CABINET SIDE PLATE ASS’Y LEAD WIRE - FAN MOTOR...
LEVER ARM AIR FILTER (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 061). • “O” marked parts are recommended to be kept in stock. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE PART NO. CWE11C3105 CWE11C3353 CWA981105...
CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 16 Exploded View (Outdoor Unit) 16.1. CU-E15DBE CU-E18DBE CU-E21DBE 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.
SOUND PROOF MATERIAL SOUND PROOF MATERIAL (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 061). • “O” marked parts are recommended to be kept in stock. CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE QTY. CU-E15DBE CU-E18DBE ←...
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE How to use electronic circuit diagram TIMER TABLE <INDOOR> 4 way valve abnormality Outdoor air temp. for Hz No. decision Anti-dew formation control Anti-freezing control Thermo OFF delay Low pressure control (gas leakage) compressor OFF time...