Panasonic CS-E15DB4EW User manual

1 Features 2
2 Functions 3
2.1. Remote Control 3
2.2. Indoor Unit 4
2.3. Outdoor Unit 5
3 Product Specifications 6
3.1. CS-E15DB4EW CU-E15DBE 6
3.2. CS-E18DB4EW CU-E18DBE 8
3.3. CS-E21DB4ES CU-E21DBE 10
4 Dimensions 12
4.1. Indoor Unit & Remote Control 12
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-E15DB4EW CU-E15DBE
CS-E18DB4EW CU-E18DBE
CS-E21DB4ES CU-E21DBE
4.2. Outdoor Unit 13
5 Refrigeration Cycle Diagram 14
6 Block Diagram 15
7 Wiring Diagram 16
8 Operation Details 17
8.1. Basic Operation 17
8.2. Protection Control Features 28
9 Operating Instructions 34
10 Installation And Servicing Air Conditioner Using R410A 42
10.1. Outline 42
10.2. Tools For Installing/Servicing Refrigerant Piping 43
Air Conditioner
CONTENTS
Page Page
Order No. MAC0502032C8

10.3. Refrigerant Piping Work 47
10.4. Installation, Transferring, Servicing 49
11 Installation Instructions 53
11.1. Safety Precautions 53
11.2. Indoor Unit 55
11.3. Outdoor Unit 62
12 Servicing Information 66
12.1. Troubleshooting 66
12.2. Breakdown Self Diagnosis Function 68
12.3. Remote Control 70
12.4. Auto OFF/ON Button 71
12.5. Disassembly of Parts 72
13 Technical Data 75
13.1. Operation Characteristics 75
13.2. Sensible Capacity Chart 78
14 Exploded View (Indoor Unit) 79
• Product
− Four modes of operation selection
− Powerful Mode operation
− 24-Hour Real Time Timer Control
− Quiet Mode Operation
− Discharged air can be swung automatically or manually
by remote control
− Air filter with function to reduce dust and smoke.
14.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES 79
14.2. CZ-BT20E (Front Grille Complete) 81
15 Replacement Parts List (Indoor Unit) 82
15.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES 82
15.2. CZ-BT20E (Front Grille Complete) 83
16 Exploded View (Outdoor Unit) 84
16.1. CU-E15DBE CU-E18DBE CU-E21DBE 84
17 Replacement Parts List (Outdoor Unit) 85
17.1. CU-E15DBE CU-E18DBE CU-E21DBE 85
18 Electronic Circuit Diagram 86
18.1. Indoor Unit 86
18.2. Outdoor Unit 90
18.3. Remote Control 95
18.4. Print PatternIndoor Unit Printed Circuit Board 96
18.5. Print PatternOutdoor Unit Printed Circuit Board View 97
• Serviceability Improvement
− Removable and washable Intake Grille
− Breakdown Self Diagnosis function
• Environmental Protection
− Non-ozone-depletion substances refrigerant (R410A)
• Quality Improvement
− Gas leakage detection
− Deice operation
− Auto restart control
1 Features
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

2 Functions
2.1. Remote Control
Operation OFF / ON Room Temperature Setting
TEMP
Operation Mode Selection
•AUTO Automatic Operation
•HEAT Heating Operation
•COOL Cooling Operation
•DRY Soft Dry Operation
Time / Timer Setting
• Hours and minutes setting.
Clock Setting
• Current time setting.
Quiet Mode Operation
QUIET
Airflow Direction Control
• 24-hour, OFF / ON Real Timer Setting.
Timer Setting
Timer Operation Set / Cancel
• ON Timer and OFF Timer setting and
cancellation.
CLOCK
Powerful Mode Operation
POWERFUL
• Increase or decrease set temperature.
(16°C to 30°C)
•AUTO Vertical Automatic Airflow
Direction Control.
• MANUAL Vertical Manual Airflow
Direction Control.
FAN SPEED
Check Point
Reset Point
RESET
CHECK
AIR SWING
• Breakdown self diagnosis function.
• Clear memory data.
CANCEL
OFF
TIMER ON TIMER
FAN
SPEED
AUTO
HEAT
DRY
COOL
OFF
MODE
TIMER
ON
123
OFF
CLOCK RESET
SET
CANCEL
TEMP
POWERFUL
FAN SPEED
AIR SWING
OFF/ON
QUIET
AUTO
MANUAL
CHECK
INVENTER
OFF / ON I
MODE
Indoor Fan Speed Selection
•Low
•Medium-
•Medium
•Medium+
•High
•AUTO Automatic Fan Speed
TIMER-ON
TIMER-OFF
SET
CANCEL
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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.
Automatic and 5 Manual Indoor
Fan Speeds
Powerful Mode
•For quick cooling or heating.
24-Hour Real Time Timer Control
Microcomputer-controlled Room
Temperature Control
Breakdown Self Diagnosis Function
Indoor Power Relay Control
Anti-Dew Formation Control
Anti Freezing Control
Anti-Cold Draft Control
Hot Start
Intake Air Temperature Control
Quiet Mode
•To provide quiet operation.
Automatic Restart Control
•Operation is restarted after power failure at
previous setting mode.
Low Pressure Control
(Gas Leakeage Detection)
Deodorizing Control
Operation Indication Lamps (LED)
• POWER (Green)........Lights up in operation,
blinks in Automatic
Operation Mode judging,
deice, On Timer sampling
and Hot Start operation.
• TIMER (Orange)......Lights up in Timer Setting.
Blinks in Self Diagnosis
Control.
• QUIET (Orange)......Lights up in Quiet Mode
Operation.
• POWERFUL (Orange) ...Lights up when Powerful
Mode is selected.
• AIR SWING (Orange)....Lights up in Auto Air
Swing.
Four Operation Modes
•Automatic, Heating, Cooling and Soft Dry
Operation.
Airflow Direction Control
•Vertical discharged air can be swung
automatically or manually by remote control.
•Horizontal discharged air can be adjusted by
hand. High Pressure Control
Deice Operation
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

2.3. Outdoor Unit
30 seconds Forced Operation
Time Delay Safety Control
Overload Protection Control
Deice Operation
Standby Control
Compressor Overheating
Prevention Control
IPM (Power Transistor)
Overheating Protection Control
Total Running Current Control
Mininum Operation Frequency
Protection Control
Low Operation Frequency
Protection Control
Outdoor Air Temperature
Control
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

3.1. CS-E15DB4EW CU-E15DBE
3 Product Specifications
Unit CS-E15DB4EW CU-E15DBE
Cooling Capacity kW
kcal/h
BTU/h
4.10 (0.90 - 4.80)
3,530 (770 - 4,130)
14,000 (3,070 - 16,400)
Heating Capacity kW
kcal/h
BTU/h
5.10 (0.90 - 6.20)
4,390 (770 - 5,330)
17,400 (3,070 - 21,100)
Moisture Removal l/h
Pint/h 2.3 (4.9)
Power Source (Phase, Voltage, Cycle) ø
V
Hz
Single
230 - 240
50
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) Cooling; 7.5 (260) —
Heating; 9.0 (320)
Me m3/min (cfm) Cooling; 9.0 (320) —
Heating; 10.1 (360)
Hi m3/min (cfm) Cooling; 10.5 (370) Cooling; 46.8 (1,650)
Heating; 10.8 (380) Heating; 48.5 (1,710)
dB (A) Cooling; High 34, Low 26 Cooling; 45
Heating; High 35, Low 28 Heating; 47
Noise Level
Power level dB Cooling; High 47 Cooling; High 58
Heating; High 48 Heating; High 60
Electrical Data Input Power WCooling; 1,300 (255 - 1,710)
Heating; 1,770 (260 - 2,180)
Running Current ACooling; 6.0 - 5.9
Heating; 8.0 - 7.9
EER W/W Cooling; 3.15 (3.53 - 2.81)
BTU/hW Cooling; 10.8 (12.0 - 9.6)
COP W/W Heating; 2.88 (3.46 - 2.84)
BTU/hW Heating; 9.8 (11.8 - 9.7)
Starting Current A8.0
Piping Connection Port
(Flare piping) inch inch G ; Half Union 1/2” L ; Half Union 1/4”G ; 3-way valve 1/2” L ; 2-way valve 1/4”
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

Unit CS-E15DB4EW CU-E15DBE
Pipe Size
(Flare piping) inch inch G (gas side) ; 1/2” L (liquid side) ; 1/4”G (gas side) ; 1/2” L (liquid side) ; 1/4”
Drain
Hose Inner diameter mm 30 —
Length m0.193 —
Power Cord Length
Number of core-wire —— — —
Dimensions Height inch (mm) 10 - 1/4 (260) 29 - 17/32 (750)
Width inch (mm) 22 - 5/8 (575) 34 - 7/16 (875)
Depth inch (mm) 22 - 5/8 (575) 13 - 19/32 (345)
Net Weight lb (kg) 40 (18) 106 (48)
Compressor Type —Involute scroll
Motor Type —Brushless (4-pole)
Rated Output W—900
Air Circulation Type Backward Fan Propeller Fan
Material ABS + GF 10% P.P
Motor Type DC Brushless Motor (8-poles) Transistor (8-poles)
Rate Output W40 40
Fan Speed Lo (Cool/Heat) rpm 400 / 480 —
Me (Cool/Heat) rpm 480 / 540 —
Hi (Cool/Heat) rpm 560 / 600 640 / 660
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium
Fin Type Slit Fin Corrugated Fin
Row / Stage (Plate fin configuration, forced draft)
2/10 1/28
FPI 18 18
Size (W × H × L) mm 1,330
1,270 × 210 × 25.4 871.7 × 711.2 × 22
Refrigerant Control Device —Expansion Valve
Refrigeration Oil (cm3) — RB68A (400)
Refrigerant (R410A) kg (oz) —1.23 (43.4)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
• Specifications are subjected to change without notice for further improvement.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

3.2. CS-E18DB4EW CU-E18DBE
Unit CS-E18DB4EW CU-E18DBE
Cooling Capacity kW
kcal/h
BTU/h
4.80 (0.90 - 5.70)
4,130 (770 - 4,900)
16,400 (3,070 - 19,400)
Heating Capacity kW
kcal/h
BTU/h
5.60 (0.90 - 7.10)
4,820 (770 - 6,110)
19,100 (3,070 - 24,200)
Moisture Removal l/h
Pint/h 2.6 (5.5)
Power Source (Phase, Voltage, Cycle) ø
V
Hz
Single
230 - 240
50
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) Cooling; 8.0 (280) —
Heating; 9.1 (320)
Me m3/min (cfm) Cooling; 9.5 (340) —
Heating; 10.4 (370)
Hi m3/min (cfm) Cooling; 11.0 (390) 40.0 (1,410)
Heating; 11.5 (405)
dB (A) Cooling; High 36, Low 28 Cooling; 47
Heating; High 37, Low 29 Heating; 48
Noise Level
Power level dB Cooling; High 49 Cooling; High 60
Heating; High 50 Heating; High 61
Electrical Data Input Power WCooling; 1,530 (255 - 1,930)
Heating; 1,900 (260 - 2,450)
Running Current ACooling; 7.0 - 6.9
Heating; 8.5 - 8.3
EER W/W Cooling; 3.14 (3.53 - 2.95)
BTU/hW Cooling; 10.7 (12.0 - 10.1)
COP W/W Heating; 2.95 (3.46 - 2.90)
BTU/hW Heating; 10.1 (11.8 - 9.9)
Starting Current A8.5
Piping Connection Port
(Flare piping) inch inch G ; Half Union 1/2” L ; Half Union 1/4”G ; 3-way valve 1/2” L ; 2-way valve 1/4”
Pipe Size
(Flare piping) inch inch G (gas side) ; 1/2” L (liquid side) ; 1/4”G (gas side) ; 1/2” L (liquid side) ; 1/4”
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

Unit CS-E18DB4EW CU-E18DBE
Drain
Hose Inner diameter mm 30 —
Length m0.193 —
Power Cord Length
Number of core-wire —— — —
Dimensions Height inch (mm) 10 - 1/4 (260) 29 - 17/32 (750)
Width inch (mm) 22 - 5/8 (575) 34 - 7/16 (875)
Depth inch (mm) 22 - 5/8 (575) 13 - 19/32 (345)
Net Weight lb (kg) 40 (18) 106 (48)
Compressor Type —Involute scroll
Motor Type —Brushless (4-pole)
Rated Output W—900
Air Circulation Type Backward Fan Propeller Fan
Material ABS + GF 10% P.P
Motor Type DC Brushless Motor (8-poles) Transistor (8-poles)
Rate Output W40 40
Fan Speed Lo (Cool/Heat) rpm 430 / 490 —
Me (Cool/Heat) rpm 510 / 560 —
Hi (Cool/Heat) rpm 590 / 640 660 / 660
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium
Fin Type Slit Fin Corrugated Fin
Row / Stage (Plate fin configuration, forced draft)
2/10 2/34
FPI 18 16
Size (W ×H×L) mm 1,330
1,270 ×210 ×25.4 849.3 878 ×714 ×36.4
Refrigerant Control Device —Expansion Valve
Refrigeration Oil (cm3)—RB68A (400)
Refrigerant (R410A) kg (oz) —1.06 (37.4)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
• Specifications are subjected to change without notice for further improvement.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

3.3. CS-E21DB4ES CU-E21DBE
Unit CS-E21DB4ES CU-E21DBE
Cooling Capacity kW
kcal/h
BTU/h
5.90 (0.90 - 6.30)
5,070 (770 - 5,420)
20,100 (3,070 - 21,500)
Heating Capacity kW
kcal/h
BTU/h
7.00 (0.90 - 8.00)
6,020 (770 - 6,880)
23,900 (3,070 - 27,300)
Moisture Removal l/h
Pint/h 3.3 (7.0)
Power Source (Phase, Voltage, Cycle) ø
V
Hz
Single
230 - 240
50
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) Cooling; 9.3 (330) —
Heating; 10.6 (370)
Me m3/min (cfm) Cooling; 11.0 (390) —
Heating; 12.3 (430)
Hi m3/min (cfm) Cooling; 12.8 (450) Cooling; 42.8 (1,510)
Heating; 14.0 (495) Heating; 41.5 (1,460)
dB (A) Cooling; High 41, Low 33 Cooling; 49
Heating; High 42, Low 34 Heating; 49
Noise Level
Power level dB Cooling; High 54 Cooling; High 62
Heating; High 55 Heating; High 62
Electrical Data Input Power WCooling; 2,050 (255 - 2,200)
Heating; 2,450 (260 - 2,820)
Running Current ACooling; 9.2 - 9.0
Heating; 10.9 - 10.6
EER W/W Cooling; 2.88 (3.53 - 2.86)
BTU/hW Cooling; 9.8 (12.0 - 9.8)
COP W/W Heating; 2.86 (3.46 - 2.84)
BTU/hW Heating; 9.8 (11.8 - 9.7)
Starting Current A10.9
Piping Connection Port
(Flare piping) inch inch G ; Half Union 1/2” L ; Half Union 1/4”G ; 3-way valve 1/2” L ; 2-way valve 1/4”
Pipe Size
(Flare piping) inch inch G (gas side) ; 1/2” L (liquid side) ; 1/4”G (gas side) ; 1/2” L (liquid side) ; 1/4”
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

Unit CS-E21DB4ES CU-E21DBE
Drain
Hose Inner diameter mm 30 —
Length m0.193 —
Power Cord Length
Number of core-wire —— — —
Dimensions Height inch (mm) 10 - 1/4 (260) 29 - 17/32 (750)
Width inch (mm) 22 - 5/8 (575) 34 - 7/16 (875)
Depth inch (mm) 22 - 5/8 (575) 13 - 19/32 (345)
Net Weight lb (kg) 40 (18) 108 (49)
Compressor Type —Involute scroll
Motor Type —Brushless (4-pole)
Rated Output W—900
Air Circulation Type Backward Fan Propeller Fan
Material ABS + GF 10% P.P
Motor Type DC Brushless Motor (8-poles) Transistor (8-poles)
Rate Output W40 40
Fan Speed Lo (Cool/Heat) rpm 510 / 580 —
Me (Cool/Heat) rpm 600 / 670 —
Hi (Cool/Heat) rpm 700 / 770 700 / 680
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium
Fin Type Slit Fin Corrugated Fin
Row / Stage (Plate fin configuration, forced draft)
2/10 2/34
FPI 18 18
Size (W ×H×L) mm 1,330
1,270 ×210 ×25.4 839.5 868 ×714 ×36.4
Refrigerant Control Device —Expansion Valve
Refrigeration Oil (cm3)—RB68A (400)
Refrigerant (R410A) kg (oz) —1.15 (40.6)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
• Specifications are subjected to change without notice for further improvement.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

4 Dimensions
4.1. Indoor Unit & Remote Control
4.1.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

4.2. Outdoor Unit
4.2.1. CU-E15DBE CU-E18DBE CU-E21DBE
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

5 Refrigeration Cycle Diagram
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

6 Block Diagram
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

7 Wiring Diagram
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

8 Operation Details
8.1. Basic Operation
Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes,
automatically adjust output power for maximum comfort always.
In order to achieve the suitable operation mode, the microcomputer maintains the set temperature by measuring the
temperature of environment and performing temperature shifting.
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.
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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.
8.1.3. Soft Dry Operation
8.1.3.1. Thermostat control
• Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.0°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF
point.
8.1.4. Heating Operation
8.1.4.1. Thermostat control
• Compressor is OFF when Intake Air Temperature - Internal Setting Temperature > +2.0°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature < Compressor OFF
point.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE

8.1.5. Automatic Operation
This mode can be set using remote control and the operation is decided by remote control setting temperature, indoor intake air
temperature and outdoor air temperature.
During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect
the indoor intake and outdoor air temperature. The operation mode is decided based on below chart.
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.
Remote Control Setting Temperature (°C) T1 T2 T3
16 ~ 18 +10 -3 -5
19 ~ 22 +8 -3 -7
23 ~ 26 +7 -3 -7
27 ~ 30 +6 -3 -8
There is a temperature shifting on T1, T2, and T3 if the operation mode judged is changed from Cooling/Soft Dry to Heating or vice
verse.
Operation Mode change from Temperature shifts (°C)
Cooling/Soft Dry →Heating -2
Heating →Cooling/Soft Dry +2
Example of operation mode chart adjustment:
From the above table, if remote control setting temperature = 25,
T1 = 25 + 7 = 32; T2 = 25 - 3 = 22; T3 = 25 - 7 = 18
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.
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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 — — O O O O O — — —
Tab (rpm) PSHI SHI Hi Me+ Me Me- Lo Lo- SLo SSLo
E15D 600 560 560 495 480 425 400 370 310 200
E18D 680 640 590 563 510 488 430 410 350 200
E21D 800 750 700 660 600 560 510 480 410 200
[Heating]
Remote Control — — O O O O O — — —
Tab (rpm) PSHi SSHi SHi Me+ Me Me- Lo Lo- SLo SSLo
E15D 650 610 600 545 540 495 480 440 300 200
E18D 740 690 640 618 560 553 490 490 320 200
E21D 870 820 770 745 670 655 580 570 370 200
B. Indoor Fan Control
i. Indoor fan control operation outline
1.Cooling / Dry
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE