Panasonic CS-E24DKE User manual

1 Features 2
2 Functions 3
2.1. Remote Control 3
2.2. Indoor Unit 4
2.3. Outdoor Unit 6
3 Product Specifications 7
3.1. CS-E24DKE CU-E24DKE 7
4 Dimensions 9
4.1. Indoor Unit & Remote Control 9
4.2. Outdoor Unit 10
5 Refrigeration Cycle Diagram 11
6 Block Diagram 12
7 Wiring Diagram 13
8 Operation Details 14
8.1. Basic Function 14
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-E24DKE CU-E24DKE
8.2. Protection Control Features 31
9 Operating Instructions 41
10 Installation And Servicing Air Conditioner Using R410A 47
10.1. Outline 47
10.2. Tools For Installing/Servicing Refrigerant Piping 48
10.3. Refrigerant Piping Work 52
10.4. Installation, Transferring, Servicing 54
11 Installation Instructions 58
11.1. Safety Precautions 58
11.2. Indoor Unit 61
11.3. Outdoor Unit 65
12 Servicing Information 68
12.1. Distinction Of Lead Free (PbF) Printed Circuit Board 68
12.2. Troubleshooting 68
12.3. Breakdown Self Diagnosis Function 70
Air Conditioner
CONTENTS
Page Page
Order No. MAC0501002C2

12.4. Remote Control 72
12.5. Indoor Electronic Controllers Removal Procedures 73
12.6. Cross Flow Fan and Indoor Fan Motor Removal
Procedures 74
12.7. Outdoor Electronic Controller Removal Procedure 76
13 Technical Data 77
14 Exploded View (Indoor Unit) 79
14.1. CS-E24DKE 79
15 Replacement Parts List (Indoor Unit) 80
15.1. CS-E24DKE 80
• Product
− Four modes of operation selection
− Powerful Mode operation
− Delay ON Timer and OFF Timer
− Ionizer Mode Operation
− Quiet Mode Operation
− Automatic air swing and manual adjusted by Remote
Control for horizontal and vertical airflow
− Supersonic Air Purifying System with Super Alleru-
Buster.
Inactive various harmful airbone elements including
allergens, viruses and bacteria. Generated supersonic
waves enhance the ability to collect dust and dirt in the
air.
16 Exploded View (Outdoor Unit) 81
16.1. CU-E24DKE 81
17 Replacement Parts List (Outdoor Unit) 82
17.1. CU-E24DKE 82
18 Electronic Circuit Diagram 83
18.1. Indoor Unit 83
18.2. Outdoor Unit 86
18.3. Remote Control 91
18.4. Print Pattern Indoor Unit Printed Circuit Board 92
18.5. Print Pattern Outdoor Unit Printed Circuit Board 93
• Serviceability Improvement
− Removeable and washable Front Panel
− 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-E24DKE CU-E24DKE

2 Functions
2.1. Remote Control
Operation OFF / ON
OFF/ON
I
Room Temperature Setting
TEMP
Operation Mode Selection
•aAutomatic 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)
•Vertical Automatic Airflow
Direction Control and Manual
Airflow Direction Control (5
stages of adjustment).
•Horizontal Automatic Airflow
Direction Control and Manual
Airflow Direction Control (5
stages of adjustment).
Indoor Fan Speed Selection
FAN SPEED
•Low
•Medium-
•Medium
•Medium+
•High
•AUTO Automatic Fan Speed
FAN
Check Point
Reset Point
RESET
∧
∨
SET
CANCEL
CHECK
MODE
AIR SWING
• Breakdown self diagnosis function.
• Clear memory data.
Ion Mode Operation
TIMER
OFF
ON
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CS-E24DKE CU-E24DKE

2.2. Indoor Unit
Automatic Operation Switch
•Press for < 5s to run Automatic Operation.
(Used when the remote control cannot be used.)
•Press continuously for 5s and < 8s to run
Forced Cooling Operation.
•Press continuously for 8s and < 11s to
run Forced Heating Operation.
•Press continuously for 11s and < 16s to
change different remote controlling
setting (4 type of transmission code).
•Press continuously for 16s or < 21s to
switch OFF / ON Remote Control
Receiving Sound or H14 Abnormality
Detection Mode.
Operation Indication Lamps (LED)
Quiet Mode
Four Operation Modes
•Automatic, Heating, Cooling and Soft Dry
Operation.
Delay ON Timer and OFF Timer
Powerful Mode
•For quick cooling or heating.
•
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.
•(Green) ............ Lights up in Ionizer
Mode Operation.
Blinks in Ionizer
error.
•
SUPER ALLERU-BUSTER .... Lights up in
(Blue) operation.
Automatic and 5 Manual Indoor
Fan Speeds
Automatic and 5 Manual Vertical
Airflow Directions
Automatic and 5 Manual Horizontal
Airflow Directions
Automatic Restart Control
•Operation is restarted after power failure
at previous setting mode.
Microcomputer-controlled Room
Temperature Control
•To provide quiet operation.
Ionizer Control
•Ionizer control for generate negative ion
in discharge air.
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CS-E24DKE CU-E24DKE

Anti-Dew Formation Control
Indoor Power Relay Control
Anti Freezing Control
Low Pressure Control
(Gas Leakeage Detection)
Breakdown Self Diagnosis
Function
Anti-Cold Draft Control
High Pressure Control
Hot Start
Intake Air Temperature Control
Deodorizing Control
Deice Operation
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CS-E24DKE CU-E24DKE

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-E24DKE CU-E24DKE

3.1. CS-E24DKE CU-E24DKE
3 Product Specifications
Unit CS-E24DKE CU-E24DKE
Cooling Capacity kW
kcal/h
BTU/h
6.80 (0.90 - 8.10)
5,850 (770 - 6,970)
23,200 (3,070 - 27,600)
Heating Capacity kW
kcal/h
BTU/h
8.60 (0.80 - 9.90)
7,400 (690 - 8,510)
29,300 (2,730 - 33,800)
Moisture Removal l/h
Pint/h
3.9
(8.2)
Power Source (Phase, Voltage, Cycle) ø
V
Hz
Single
230
50
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) Cooling; 12.8 (450) —
Heating; 14.0 (490)
Me m3/min (cfm) Cooling; 14.8 (520) —
Heating; 16.0 (570)
Hi m3/min (cfm) Cooling; 16.9 (600) Cooling; 52.0 (1,840)
Heating; 18.3 (660) Heating; 50.5 (1,780)
dB (A) Cooling; High 47, Low 38 Cooling; 52
Heating; High 47, Low 38 Heating; 52
Noise Level
Power level dB Cooling; High 60 Cooling; High 66
Heating; High 60 Heating; High 66
Electrical Data Input Power WCooling; 2,410 (380 - 2,990)
Heating; 2,710 (350 - 3,250)
Running Current ACooling; 10.9
Heating; 12.2
EER W/W Cooling; 2.82 (2.37 - 2.71)
BTU/hW Cooling; 9.6 (8.1 - 9.2)
COP W/W Heating; 3.17 (2.29 - 3.05)
BTU/hW Heating; 10.8 (7.8 - 10.4)
Starting Current A12.2
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CS-E24DKE CU-E24DKE

Unit CS-E24DKE CU-E24DKE
Piping Connection Port
(Flare piping)
inch
inch
G ; Half Union 5/8”
L ; Half Union 1/4”
G ; 3-way valve 5/8”
L ; 2-way valve 1/4”
Pipe Size
(Flare piping)
inch
inch
G (gas side) ; 5/8”
L (liquid side) ; 1/4”
G (gas side) ; 5/8”
L (liquid side) ; 1/4”
Drain
Hose
Inner diameter mm 12 —
Length m0.65 —
Power Cord Length
Number of core-wire
2.1 m
3 core wires × 1.5 mm2
—
—
Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750)
Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875)
Depth inch (mm) 9 - 1/16 (230) 13 - 19/32 (345)
Net Weight lb (kg) 26 (12) 140 (63.5)
Compressor Type —Hermetic Rotary
Motor Type —DC Brushless (4-pole)
Rated Output W — 1,500
Air Circulation Type Cross-flow Fan Propeller Fan
Material ASHT-18 P.P
Motor Type Transistor (8-poles) Transistor (8-poles)
Rate Output W30 60
Fan Speed Lo (Cool/Heat) rpm 1,200 / 1,310 —
Me (Cool/Heat) rpm 1,390 / 1,500 —
Hi (Cool/Heat) rpm 1,580 / 1,690 830 / 810
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coated)
Fin Type Slit Fin Corrugated Fin
Row / Stage (Plate fin configuration, forced draft)
2/15 2/28
FPI 21 18
Size (W × H × L) mm 810 × 315 × 25.4 833.2
867.8
× 711.2 × 44
Refrigerant Control Device —Capillary Tube
Refrigeration Oil (mL) —DAPHNE FV68S (650)
Refrigerant (R410A) kg (oz) —1.85 (65.3)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
Length mm —Cooling; 393, Heating; 465
Capillary Tube Flow Rate l/min —Cooling; 16.8, Heating; 21.2
Inner Diameter mm —Cooling; 1.6, Heating; 2.2
Air Filter Material
Style
P.P.
Honeycomb
—
• Specifications are subjected to change without notice for further improvement.
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CS-E24DKE CU-E24DKE

4 Dimensions
4.1. Indoor Unit & Remote Control
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CS-E24DKE CU-E24DKE

4.2. Outdoor Unit
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CS-E24DKE CU-E24DKE

5 Refrigeration Cycle Diagram
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6 Block Diagram
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7 Wiring Diagram
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CS-E24DKE CU-E24DKE

8.1. Basic Function
8 Operation Details
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. 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 and intake air temperature.
8.1.1. Internal Setting Temperature
Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes.
These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value
will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.
Table (a): Auto Operation Mode Setting
Mode Shift: Temperature Shift (°C)
Cooling/Soft Dry →Heating -2.0
Heating →Cooling/Soft Dry +2.0
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CS-E24DKE CU-E24DKE

Table (b): Outdoor Air Temperature Shifting
Mode: Outdoor Temperature, X (°C): Temperature Shift (°C)
Manual Operation Auto Operation
Cooling/Soft Dry 38 X1.50 2.00
30 X38 1.25 1.25
23 X30 1.25 1.25
X23 1.75 1.75
Heating 21 X-2.25 -1.50
17 X21 -1.75 -1.00
13 X17 -0.75 0.00
9 X 13 0.25 0.25
5 X 9 1.25 1.00
1 X 5 0.75 1.00
-3 X 1 1.50 1.00
X-3 1.50 1.00
Table (c): Powerful Mode Shifting
Mode: Period, X (min): Temperature Shift (°C)
Cooling X20 -2.0
X20 0.0
Soft Dry X20 -1.0
X20 0.0
Heating X20 +3.5
X20 +3.5
Table (d): Fan Speed Shifting
Mode: Fan Speed: Temperature Shift (°C)
Cooling All -0.25
Soft Dry All +0.0
Heating Lo +2.0
Me-, Me, Me+, Auto, Hi +1.5
Table (e): Start-Up Shifting
Mode within 60 Minutes from Start-up: Temperature Shift (°C)
Cooling/Soft Dry -1.0
Heating +2.0
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CS-E24DKE CU-E24DKE

CompHz = Freq. A ×Freq. H + Freq. C
Example Calculation:
Model No.: E24DK
Operation Mode: Cooling
When Intake Air Temperature - Internal setting Temperature:
1.5°C
CompHz =Freq. A ×Freq. H + Freq. C
=1.8 ×30 + 13.0
=67 Hz (Decimal point is ignored)
Cooling & Soft Dry E24DK
Freq. A Freq. C
Low Load (Freq. H 13) 2.0 10.0
High Load (Freq. H > 13) 1.8 13.0
Heating E24DK
Freq. A Freq. C
Low Load (Freq. H 15) 1.5 11.0
High Load (Freq. H > 15) 1.7 8.0
Freq. Range E24DK
Cooling Fc 64
Operation Range 14 ~ 74
Heating Fh 68
Operation Range 14 ~ 100
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
1-2.0 -3.0 1.0 153
2-1.5 -2.5 0.5 11 10 13
3-1.0 -2.0 0.0 15 12 17
4-0.5 -1.5 -0.5 18 14 21
50.0 -1.0 -1.0 22 16 26
60.5 -0.5 -1.5 25 18 32
71.0 0.0 -2.0 28 21 35 Fh
81.5 0.5 -2.5 30 24 35 Fc, Fh
92.0 1.0 -3.0 30 27 35 Fc, Fh
10 2.5 1.5 -3.5 30 30 35 Fc, Fh
11 Nil Nil -4.0 Nil Nil 35 Fh
12 Nil Nil -4.5 Nil Nil 35 Fh
Operating Frequency Calculation Formula:
Remarks:
When Freq. H is equal to 30 (Cooling), 35 (Heating) or above, the Comp. may run at the freq. higher than Fc or Fh up to max.
freq. operation.
Best Amenity Control
Every 90s (Cooling), 120s (Heating) maintain same zone Freq. H + 1 until Fc, Fh.
8.1.3. Cooling Operation
8.1.3.1. 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 +0.5°C.
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CS-E24DKE CU-E24DKE

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.
8.1.5. Heating Operation
8.1.5.1. Thermostat control
• Compressor is OFF when Intake Air Temperature - Internal Setting > +1.5°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature < Compressor OFF
point -0.5°C.
8.1.6. 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.
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CS-E24DKE CU-E24DKE

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 +8 -5
19 ~ 22 +8 +7 -7
23 ~ 26 +7 +6 -7
27 ~ 30 +6 +5 -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 + 6 = 31; 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.
8.1.7. 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 —OOOOO— — —
Tab (rpm) SHI Hi Me+ Me Me- Lo Lo- SLo SSLo
E24DK 1670 1580 1480 1390 1290 1200 930 840 630
[Heating]
Remote Control —OOOOO— — —
Tab (rpm) SSHI SHi Me+ Me Me- Lo Lo- SLo SSLo
E24DK 1690 1690 1590 1500 1400 1310 930 400 300
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CS-E24DKE CU-E24DKE

B. Indoor Fan Control
i. Indoor fan control operation outline
1. Cooling / Dry
2. Heating
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CS-E24DKE CU-E24DKE

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 (E24DK).
• If move from Maximum, the fan speed no change.
• In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E24DK).
b. DOWN:
• The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm.
c. Current Output Fixed:
• Maintain at present fan speed.
d. Instantaneous Maximum:
• Fan speed will be increased to maximum auto fan speed.
e. Temperature in ( ) is for Powerful Mode operation.
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CS-E24DKE CU-E24DKE