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Panasonic CS-E15DKEW Service Manual

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  Summary of Contents for Panasonic CS-E15DKEW

  • Page 1: Table Of Contents

    10 Installation And Servicing Air Conditioner Using R410A 4.1. Indoor Unit & Remote Control 10.1. Outline 4.2. Outdoor Unit 10.2. Tools For Installing/Servicing Refrigerant Piping © 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2: Features

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 10.3. Refrigerant Piping Work 14.2. Sensible Capacity Chart 10.4. Installation, Transferring, Servicing 15 Exploded View (Indoor Unit) 15.1. CS-E15DKEW 11 Installation Instructions 15.2. CS-E18DKEW CS-E21DKES 11.1. Safety Precautions 11.2. Indoor Unit 16 Replacement Parts List (Indoor Unit) 11.3.
  • Page 3: Functions

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 2 Functions 2.1. Remote Control OFF/ON FAN SPEED Operation OFF / ON Indoor Fan Speed Selection • • Medium- MODE • Medium Operation Mode Selection • Medium+ • High • Automatic Operation •...
  • Page 4: Indoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 2.2. Indoor Unit Automatic Operation Switch Four Operation Modes • Press for < 5s to run Automatic Operation. • Automatic, Heating, Cooling and Soft Dry (Used when the remote control cannot be used.) Operation.
  • Page 5: Outdoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 2.3. Outdoor Unit Time Delay Safety Control Breakdown Self Diagnosis Function 30 seconds Forced Operation Low Pressure Control (Gas Leakeage Detection) Overload Protection Control Indoor Power Relay Control Total Running Current Control...
  • Page 6: Product Specifications

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3 Product Specifications 3.1. CS-E15DKEW CU-E15DKE Unit CS-E15DKEW CU-E15DKE Cooling Capacity 4.40 (0.90 - 5.00) kcal/h 3,780 (770 - 4,300) BTU/h 15,000 (3,070 - 17,100) Heating Capacity 5.50 (0.90 - 7.10) kcal/h...
  • Page 7 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Unit CS-E15DKEW CU-E15DKE Piping Connection Port inch G ; Half Union 1/2” G ; 3-way valve 1/2” (Flare piping) inch L ; Half Union 1/4” L ; 2-way valve 1/4” Pipe Size inch G (gas side) ;...
  • Page 8: Cs-E18Dkew Cu-E18Dke

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3.2. CS-E18DKEW CU-E18DKE Unit CS-E18DKEW CU-E18DKE Cooling Capacity 5.30 (0.90 - 6.00) kcal/h 4,560 (770 - 5,160) BTU/h 18,100 (3,070 - 20,500) Heating Capacity 6.60 (0.90 - 8.00) kcal/h 5,680 (770 - 6,880)
  • Page 9 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Unit CS-E18DKEW CU-E18DKE Pipe Size inch G (gas side) ; 1/2” G (gas side) ; 1/2” (Flare piping) inch L (liquid side) ; 1/4” L (liquid side) ; 1/4” Drain Inner diameter —...
  • Page 10: Cs-E21Dkes Cu-E21Dke

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3.3. CS-E21DKES CU-E21DKE Unit CS-E21DKES CU-E21DKE Cooling Capacity 6.30 (0.90 - 7.10) kcal/h 5,420 (770 - 6,110) BTU/h 21,500 (3,070 - 24,200) Heating Capacity 7.20 (0.90 - 8.50) kcal/h 6,190 (770 - 7,310)
  • Page 11 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Unit CS-E21DKES CU-E21DKE Pipe Size inch G (gas side) ; 1/2” G (gas side) ; 1/2” (Flare piping) inch L (liquid side) ; 1/4” L (liquid side) ; 1/4” Drain Inner diameter —...
  • Page 12: Dimensions

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 4 Dimensions 4.1. Indoor Unit & Remote Control 4.1.1. CS-E15DKEW...
  • Page 13 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 4.1.2. CS-E18DKEW CS-E21DKES...
  • Page 14: Outdoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 4.2. Outdoor Unit 4.2.1. CU-E15DKE CU-E18DKE CU-E21DKE...
  • Page 15: Refrigeration Cycle Diagram

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 5 Refrigeration Cycle Diagram...
  • Page 16: Block Diagram

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 6 Block Diagram...
  • Page 17: Wiring Diagram

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 7 Wiring Diagram...
  • Page 18: Operation Details

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8 Operation Details 8.1. 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.
  • Page 19 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Table (b): Outdoor Air Temperature Shifting Mode: Outdoor Temperature, X (°C): Temperature Shift (°C) Manual Operation Auto Operation Cooling/Soft Dry 1.50 2.00 1.25 1.25 1.25 1.25 1.75 1.75 Heating -2.25 -1.50 -1.75 -1.00...
  • Page 20: Compressor Operation Frequency

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.2. Compressor Operation Frequency Intake Air Temperature - Internal Setting Temperature (°C) Freq. H Zone Cooling & Soft Dry Heating Cooling Soft Dry Heating Remark -2.0 -1.5 -1.0 -0.5 -0.5 -1.0 -1.5 -2.0...
  • Page 21: Soft Dry Operation

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.4. Soft Dry Operation 8.1.4.1. Thermostat control • Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C. • Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.
  • Page 22: Indoor Fan Motor Operation

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, based on the above operation mode chart, every 30 minutes.
  • Page 23 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE B. Indoor Fan Control i. Indoor fan control operation outline 1. Cooling / Dry 2. Heating...
  • Page 24 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE ii. Auto Fan Speed 1. Cooling 2. Heating Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21DK), 1480 rpm (E18DK). • If move from Maximum, the fan speed no change.
  • Page 25 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE iii. Max Capacity Condition a) During Cooling operation, if all to the following condition is fulfilled, the indoor fan speed is set to Shi. 1. Indoor intake temperature 24°C. 2. Operation frequency 72 Hz (E18DK), 95 Hz (E21DK) & above.
  • Page 26: Outdoor Fan Motor Operation

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE D. Deodorizing Control i. Control condition Control at cooling/dry operation and auto fan speed. No Deodorizing Control is performed during ON timer standby operation and during Anti-freezing control prevention. ii. Operation The odor status is arranged as below and it is shifted as follow.
  • Page 27: Airflow Direction

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Basic Rotation Speed 8.1.9. Airflow Direction 1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). 2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
  • Page 28 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 29 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.10. Quiet operation (Cooling Mode/Cooling area of Dry Mode) A. Purpose To provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed.
  • Page 30: Quiet Operation (Heating)

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.10.2. Quiet operation (Heating) A. Purpose To provide quiet heating operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed.
  • Page 31: Powerful Mode Operation

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.11. 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 8.1.12.
  • Page 32: Auto Restart Control

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.14. 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.
  • Page 33: Indoor Power Relay Control

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.1.17. Indoor Power Relay Control Power relay will turn on during operation or in progress of stopping operation. Although operation stops, the power relay continues on for three minutes. However, during instantaneous power failure (< 0.5s), power relay will turn off. Then, it will turn on 2 minutes after power recover and the unit will operate as previous operation condition.
  • Page 34: Ionizer Operation Case Study

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE without ionizer operation. c. Timer during ionizer operation Refer to case study in next page for detail. 8.1.18.1. Ionizer Problem Detection Control i. Purpose To inform user of ionizer problems and detection.
  • Page 35: Protection Control Features

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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 and on again or after 4-way valve deices condition.
  • Page 36 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.2.1.4. IPM (Power transistor) Prevention Control A. Overheating Prevention Control 1. When the IPM temperature rises to 110°C, compressor operation will stop immediately. 2. Compressor operation restarts after three minutes the temperature decreases to 95°C.
  • Page 37 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.2.1.7. CT Disconnection Detection 1. Control Starting Condition a. Total Current is below 0.74 ~ 0.94 Amp. b. Operating Frequency is 72 Hz (E18DK), 95 Hz (E21DK) +1 and above. c. Continuously for 20s.
  • Page 38: Outdoor Air Temperature Control

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 39 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.2.2.3. Anti-Freezing Control 1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating. 2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C.
  • Page 40: Protection Control For Heating Operation

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.2.3. Protection Control For Heating Operation 8.2.3.1. Anti Cold Draft Control Indoor fan speed varies in accordance to indoor heat exchanger temperature, based on type of air volume and direction, as shown below.
  • Page 41 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21DK), 1480 rpm (E18DK). • If move from Maximum, the fan speed no change.
  • Page 42 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.2.3.4. Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures. 8.2.3.5. Outdoor Temperature Control • Outdoor temperature is detected and the following control is perform.
  • Page 43: Deice Control

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 8.2.3.6. Deice Control A. Deice operation (Normal Deice Operation) 1. Detection methods Outdoor heat exchanger temperature sensor, timer. 2. Deice operation time chart Notes a. During deice operation, the relationship between outdoor pipe temperature and time T1 is such operation will proceed to next stage.
  • Page 44 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3. Explanation of operation 1) Before the deice is started, compressor frequency is set to the specified value for T0-timer. 2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF.
  • Page 45 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3. Deice condition: OD air temp. t 0°C. OD heat exchanger temp. 0°C for 14 min. OD heat exchanger temp. -8°C for 10 min. 4. Auto clean deice time chart Similar to deice operation 2 except for frequency values.
  • Page 46 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Notes 1. During deice operation, the relationship between outdoor pipe temperature and time T1 is such proceed to next operation. 2. The deice will be performed only after 1 hour from when the operation has started.
  • Page 47: Operating Instructions

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 9 Operating Instructions 9.1. CS-E15DKEW Thank you for purchasing Panasonic Air Conditioner SAFETY PRECAUTIONS I Definition To prevent personal injury, injury to others and property Installation Precautions Installation Precautions damage, the following instructions must be followed.
  • Page 48 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Note: The illustrations in this manual are for explanation purposes only and may differ from the actual unit. It is subjected to change without notice for future improvement. PRODUCT OVERVIEW I About...
  • Page 49: Operation Modes

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE HOW TO OPERATE I Operation Details Auto, Heat, Cool, Auto, Heat, Cool, Dr y Dr y AUTO - Automatic Operation • The unit will automatically select the operation mode according to the setting, outdoor and room temperature.
  • Page 50 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE HOW TO OPERATE I Operations Details Powerful, Powerful, Quiet, Quiet, Ion, Fan Speed, Ion, Fan Speed, POWERFUL • To achieve setting temperature Air Swing Air Swing quickly. QUIET • To provide a quiet environment.
  • Page 51 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE HOW TO OPERATE I Operation Details Timer Timer TIMER • Use the ON timer to turn on the air conditioner at the desired time. This will give you a cooling or warming environment, e.g.
  • Page 52 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE CARE & CLEANING I Washing Instructions • Do not use benzene, thinner or Switch off the power supply Switch off the power supply scouring powder. before cleaning before cleaning • Use soaps or neutral household ≃...
  • Page 53: Cs-E18Dkew Cs-E21Dkes

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 9.2. CS-E18DKEW CS-E21DKES Thank you for purchasing Panasonic Air Conditioner SAFETY PRECAUTIONS I Definition To prevent personal injury, injury to others and property Installation Precautions Installation Precautions damage, the following instructions must be followed.
  • Page 54 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Note: The illustrations in this manual are for explanation purposes only and may differ from the actual unit. It is subjected to change without notice for future improvement. PRODUCT OVERVIEW I About...
  • Page 55 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE HOW TO OPERATE I Operation Details Auto, Heat, Cool, Auto, Heat, Cool, Dr y Dr y AUTO - Automatic Operation • The unit will automatically select the operation mode according to the setting, outdoor and room temperature.
  • Page 56 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE HOW TO OPERATE I Operations Details Powerful, Powerful, Quiet, Quiet, Ion, Fan Speed, Ion, Fan Speed, POWERFUL • To achieve setting temperature Air Swing Air Swing quickly. QUIET • To provide a quiet environment.
  • Page 57 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE HOW TO OPERATE I Operation Details Timer Timer TIMER • Use the ON timer to turn on the air conditioner at the desired time. This will give you a cooling or warming environment, e.g.
  • Page 58 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE CARE & CLEANING I Washing Instructions • Do not use benzene, thinner or Switch off the power supply Switch off the power supply scouring powder. before cleaning before cleaning • Use soaps or neutral household ≃...
  • Page 59: Installation And Servicing Air Conditioner Using R410A

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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...
  • Page 60: Tools For Installing/Servicing Refrigerant Piping

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE d. R410A refrigerating machine oil Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the refrigerating machine oil to collect in the refrigerating cycle.
  • Page 61: R410A Tools

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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...
  • Page 62 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 5. Charging hose • The pressure resistance of the charging hose has been raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports.
  • Page 63 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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...
  • Page 64: Refrigerant Piping Work

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 10.3. Refrigerant Piping Work 10.3.1. Piping Materials It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not use pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries.
  • Page 65 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Table 11 R410A flaring dimensions Nominal Outside Wall thickness A (mm) diameter diameter (mm) R410A flaring Conventional flaring tool (mm) tool, clutch type Clutch type Wing-nut type 6.35 0 - 0.5 1.0 - 1.5 1.5 - 2.0...
  • Page 66: Refrigerant Piping

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE b. Copper pipes Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily distinguished from other piping materials, to prevent mistaken use.
  • Page 67: Transferring (Using New Refrigerant Piping)

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 68: Recharging Refrigerant During Servicing

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 10.4.5. Recharging Refrigerant During Servicing When recharging is necessary, insert the specified amount of new refrigerant in accordance with the following procedure. 1. Connect the charging hose to the service port of the outdoor unit.
  • Page 69 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 70: Installation Instructions

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 11 Installation Instructions G CS-E15DKEW Required tools for Installation Works 1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench 18 N.m (1.8 kgf.m)
  • Page 71 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE CAUTION 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.
  • Page 72 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10BP (E15DK) Select the best location INDOOR UNIT • There should not be any heat source or steam near the unit.
  • Page 73: Indoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 11.2. Indoor Unit 11.2.1. SELECT THE BEST LOCATION 11.2.3. 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.
  • Page 74 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
  • Page 75 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 11.2.5. 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 4 ×...
  • Page 76 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE INSTALLATION OF SUPER ALLERU-BUSTER FILTER 1. Open the front panel. 2. Remove the air filter. 3. Remove Supersonic air purifying device. 4. Open the Supersonic air purifying device frame. 5. Insert the super alleru-buster filter and close the Supersonic air purifying device frame as show in illustration at right.
  • Page 77: Outdoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 78: Evacuation Of The Equipment

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 79: Pipe Insulation

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3. Secure the cable onto the control board with the holder (clamper). 4. Cable connection to the power supply (220 - 240V, 50Hz) through knife switch (Disconnecting means). • Connect the approved polychloroprene sheathed power supply cable (3 x 1.5 mm ), type designation 245 IEC 57 or heavier cord to the terminal board, and connect the other end of the cable to knife switch (Disconnecting means).
  • Page 80 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE CHECK ITEMS Is there any gas leakage at flare nut connections? Is the indoor unit properly hooked to the installation plate? Has the heat insulation been carried out at flare nut Is the power supply voltage complied with rated value?
  • Page 81: Installation Instructions

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 12 Installation Instructions G CS-E18DKEW CS-E21DKES Required tools for Installation Works 1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14.
  • Page 82 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE CAUTION 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.
  • Page 83 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10BP (E18DK, E21DK) Select the best location INDOOR UNIT • There should not be any heat source or steam near the unit.
  • Page 84: Indoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 12.2. Indoor Unit 12.2.1. SELECT THE BEST LOCATION 12.2.3. 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.
  • Page 85 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3. For the embedded piping (This can be used for left rear piping & left bottom piping also.)
  • Page 86 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 12.2.5. 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 4 ×...
  • Page 87 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE INSTALLATION OF SUPER ALLERU-BUSTER FILTER 1. Open the front panel. 2. Remove the air filter. 3. Remove Supersonic air purifying device. 4. Open the Supersonic air purifying device frame. 5. Insert the super alleru-buster filter and close the Supersonic air purifying device frame as show in illustration at right.
  • Page 88: Outdoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 12.3. Outdoor Unit 12.3.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section) 12.3.2. INSTALL THE OUTDOOR UNIT • After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.
  • Page 89 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 12.3.4. 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.
  • Page 90 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 3. Secure the cable onto the control board with the holder (clamper). 4. Cable connection to the power supply (220 - 240V, 50Hz) through knife switch (Disconnecting means). • Connect the approved polychloroprene sheathed power supply cable (3 x 1.5 mm ), type designation 245 IEC 57 or heavier cord to the terminal board, and connect the other end of the cable to knife switch (Disconnecting means).
  • Page 91 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE CHECK ITEMS Is there any gas leakage at flare nut connections? Is the indoor unit properly hooked to the installation plate? Has the heat insulation been carried out at flare nut Is the power supply voltage complied with rated value?
  • Page 92: Servicing Information

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 13 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).
  • Page 93 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 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.
  • Page 94: Breakdown Self Diagnosis Function

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 1. 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...
  • Page 95 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE Error Codes Table Diagnosis Abnormality / Protection control Abnormality Emergency Primary location to verify display Judgement operation • Internal / external cable connections Indoor / outdoor abnormal > 1 min after starting...
  • Page 96: Remote Control

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 13.3. Remote Control • 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.
  • Page 97: Disassembly Of Parts

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 13.4. Disassembly of Parts a. Indoor Control Board Removal Procedures 1. Remove the Front Grille Fig. 1 2. Remove the Indoor Control Board Fig. 2 Fig. 4 Fig. 3 Fig. 5...
  • Page 98 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE b. Electronic Controller Removal Procedures 1. Remove Main Electronic Controller Fig. 7 Fig. 6 c. Cross Flow Fan and Fan Motor Removal Procedures 1. Remove Cross Flow Fan and Fan Motor Fig. 9 Fig.
  • Page 99 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE d. Outdoor Electronic Controller Removal Procedure • Be save to return the wiring to its original position 1. Remove the top panel and front panel • There are many high voltage components within the heat sink cover so never touch the interior during operation.
  • Page 100: Technical Data

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 14 Technical Data 14.1. Operation Characteristics 14.1.1. CS-E15DKEW CU-E15DKE...
  • Page 101 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 14.1.2. CS-E18DKEW CU-E18DKE...
  • Page 102 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 14.1.3. CS-E21DKES CU-E21DKE...
  • Page 103: Sensible Capacity Chart

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 14.2. Sensible Capacity Chart G CS-E15DKEW CU-E15DKE 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 4.36 3.31 1.25 4.08 3.17 1.35 3.79 3.05 1.44 3.45 2.90 1.56 19.0°C 4.40 1.37 19.5°C 4.79...
  • Page 104: Exploded View (Indoor Unit)

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 15 Exploded View (Indoor Unit) 15.1. CS-E15DKEW 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.
  • Page 105: Cs-E18Dkew Cs-E21Dkes

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 15.2. CS-E18DKEW CS-E21DKES 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.
  • Page 106: Replacement Parts List (Indoor Unit)

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 16 Replacement Parts List (Indoor Unit) 16.1. CS-E15DKEW REF. NO. PART NAME & DESCRIPTION QTY. CS-E15DKEW REMARKS CHASSY COMPLETE CWD50C1431 FAN MOTOR CWA981149 CROSS FLOW FAN COMPLETE CWH02C1031 BEARING ASS’Y CWH64K007 SCREW - CROSS FLOW FAN...
  • Page 107: Cs-E18Dkew Cs-E21Dkes

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 16.2. CS-E18DKEW CS-E21DKES REF. NO. PART NAME & DESCRIPTION QTY. CS-E18DKEW CS-E21DKES REMARKS ← CHASSY COMPLETE CWD50C1382 ← FAN MOTOR CWA981149 ← CROSS FLOW FAN COMPLETE CWH02C1010 ← SCREW - CROSS FLOW FAN CWH4580304 ←...
  • Page 108: Exploded View (Outdoor Unit)

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 17 Exploded View (Outdoor Unit) 17.1. CU-E15DKE CU-E18DKE CU-E21DKE 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.
  • Page 109: Replacement Parts List (Outdoor Unit)

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 18 Replacement Parts List (Outdoor Unit) 18.1. CU-E15DKE CU-E18DKE CU-E21DKE REF NO. DESCRIPTION & NAME QTY. CU-E15DKE CU-E18DKE CU-E21DKE REMARKS ← ← CHASSY ASSY CWD50K2085 ← ← ANTI-VIBRATION BUSHING CWH50077 ← ←...
  • Page 110: Electronic Circuit Diagram

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 19 Electronic Circuit Diagram 19.1. Indoor Unit G CS-E15DKEW CS-E18DKEW CS-E21DKES SCHEMATIC DIAGRAM 1/4 TERMINAL FUSE R138 T3.15A L250V 7.5Ω AC01 (BLK) LF01 AC03 (RED) 4700P 250VAC ZNR01 0.22µ ERZVEAV511 (GRN) 4700P...
  • Page 111 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE SCHEMATIC DIAGRAM 2/4 IC08 IC09 DB02 REGULATOR REGULATOR 3300µ 470µ 100µ DB03 470µ 470µ 22kΩ 22kΩ 10kΩ R113 160Ω 1/4W 1µ 10kΩ 10kΩ 10kΩ BUSY IC03 BR9080F R112 1kΩ...
  • Page 112 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE SCHEMATIC DIAGRAM 3/4 DTC114EK 10kΩ 5.1kΩ 0.047µ 1kΩ 0.1µ 1kΩ F-TEST 10kΩ 0.01µ IC04 100kΩ C0EBH00C0282 REGULATOR 10kΩ S-TEST 10kΩ 2.2µ 0.01µ 0.01µ 1µ 1µ 1kΩ 1kΩ 15kΩ 20kΩ 100Ω 10kΩ 10kΩ...
  • Page 113 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE SCHEMATIC DIAGRAM 4/4 SW01 CN-TH PIPE TEMP. SENSOR 1 (20k 3950) AIR TEMP. SENSOR (15k 3950) AIR CLEANER COMPLETE CN-SONIC R602 C601 5.1k 0.1µ R601 R603 X601 IC601 CN-SONIC1 CN-STM2 HORIZONTAL VERTICAL...
  • Page 114: Outdoor Unit

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 19.2. Outdoor Unit G CU-E15DKE CU-E18DKE CU-E21DKE SCHEMATIC DIAGRAM 1/4 REACTOR GRY1 GRY2 ZNR3 PTC1 ERZV10D102 µ 350V LJP11 LJP7 RY-AC1 LJP9 ZNR2 PTC2 ERZVEAV511 100k LJP10 1/4W µ RY-PWR FUSE 400V...
  • Page 115 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE SCHEMATIC DIAGRAM 2/4 FUSE2 (T 3.15A L 250V) R111 R114 464k 464k 1/4W 1/4W R112 R115 ET529AK7NLAC CN-JP1 464k 464k 1A5-E 1/4W 1/4W 600V R154 R159 EG01Z µ 1/4W 1/4W R116 R125 10.7k...
  • Page 116 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE SCHEMATIC DIAGRAM 3/4 C113 µ µ 0.047 C117 µ 3900p µ 3900p 200k HRU0103A2 µ 0.01 µ µ µ µ 6.3V P42/TM9A1 P41/TM8810 P40/TMA10 P37/TM710 P74/IRQ00 P36/TM610 0.047 µ P75/IRQ01 P35/TM510 P76/IRQ02...
  • Page 117 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE SCHEMATIC DIAGRAM 4/4 C106 0.47µ 630V R138 HV1C1 µ 33Ω µ µ 0.047 µ 0.047 1000p µ 0.047 µ HV1C2 µ 0.047 470p µ 0.047 µ HV1C3 µ 0.047 470p YELLOW LVIC µ...
  • Page 118 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE...
  • Page 119 CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE How to use electronic circuit diagram TIMER TABLE <INDOOR> Test mode Name Time (When test point Short-circuited) 4 way valve abnormality 4 min. 24 sec. Outdoor air temp. for Hz No. decision 30 min.
  • Page 120: Remote Control

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 19.3. Remote Control...
  • Page 121: Print Patternindoor Unit Printed Circuit Board

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 19.4. Print Pattern Indoor Unit Printed Circuit Board...
  • Page 122: Print Patternoutdoor Unit Printed Circuit Board View

    CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE 19.5. Print Pattern Outdoor Unit Printed Circuit Board View [PHAAM] Printed in Malaysia...

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