Panasonic CS-E15DKEW 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-E15DKEW CU-E15DKE 6
3.2. CS-E18DKEW CU-E18DKE 8
3.3. CS-E21DKES CU-E21DKE 10
4 Dimensions 12
4.1. Indoor Unit & Remote Control 12
4.2. Outdoor Unit 14
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-E15DKEW CU-E15DKE
CS-E18DKEW CU-E18DKE
CS-E21DKES CU-E21DKE
5 Refrigeration Cycle Diagram 15
6 Block Diagram 16
7 Wiring Diagram 17
8 Operation Details 18
8.1. Basic Function 18
8.2. Protection Control Features 35
9 Operating Instructions 47
9.1. CS-E15DKEW 47
9.2. CS-E18DKEW CS-E21DKES 53
10 Installation And Servicing Air Conditioner Using R410A 59
10.1. Outline 59
10.2. Tools For Installing/Servicing Refrigerant Piping 60
Air Conditioner
CONTENTS
Page Page
Order No. MAC0501012C2

10.3. Refrigerant Piping Work 64
10.4. Installation, Transferring, Servicing 66
11 Installation Instructions 70
11.1. Safety Precautions 70
11.2. Indoor Unit 73
11.3. Outdoor Unit 77
12 Installation Instructions 81
12.1. Safety Precautions 81
12.2. Indoor Unit 84
12.3. Outdoor Unit 88
13 Servicing Information 92
13.1. Troubleshooting 92
13.2. Breakdown Self Diagnosis Function 94
13.3. Remote Control 96
13.4. Disassembly of Parts 97
14 Technical Data 100
14.1. Operation Characteristics 100
• 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.
14.2. Sensible Capacity Chart 103
15 Exploded View (Indoor Unit) 104
15.1. CS-E15DKEW 104
15.2. CS-E18DKEW CS-E21DKES 105
16 Replacement Parts List (Indoor Unit) 106
16.1. CS-E15DKEW 106
16.2. CS-E18DKEW CS-E21DKES 107
17 Exploded View (Outdoor Unit) 108
17.1. CU-E15DKE CU-E18DKE CU-E21DKE 108
18 Replacement Parts List (Outdoor Unit) 109
18.1. CU-E15DKE CU-E18DKE CU-E21DKE 109
19 Electronic Circuit Diagram 110
19.1. Indoor Unit 110
19.2. Outdoor Unit 114
19.3. Remote Control 120
19.4. Print PatternIndoor Unit Printed Circuit Board 121
19.5. Print PatternOutdoor Unit Printed Circuit Board View 122
• Serviceability Improvement
− Removable 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
2
CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

2 Functions
2.1. Remote Control
Operation OFF / ON
OFF/ON
I
Room Temperature Setting
TEMP
Operation Mode Selection
• a 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)
•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
3
CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

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-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

2.3. Outdoor Unit
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
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
5
CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

3.1. CS-E15DKEW CU-E15DKE
3 Product Specifications
Unit CS-E15DKEW CU-E15DKE
Cooling Capacity kW
kcal/h
BTU/h
4.40 (0.90 - 5.00)
3,780 (770 - 4,300)
15,000 (3,070 - 17,100)
Heating Capacity kW
kcal/h
BTU/h
5.50 (0.90 - 7.10)
4,730 (770 - 6,110)
18,800 (3,070 - 24,200)
Moisture Removal l/h
Pint/h
2.4
(5.1)
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; 7.4 (260) —
Heating; 8.8 (310)
Me m3/min (cfm) Cooling; 9.2 (320) —
Heating; 10.3 (360)
Hi m3/min (cfm) Cooling; 11.0 (390) Cooling; 48.5 (1,710)
Heating; 11.8 (420) Heating; 46.8 (1,650)
dB (A) Cooling; High 43, Low 32 Cooling; 46
Heating; High 43, Low 35 Heating; 46
Noise Level
Power level dB Cooling; High 54 Cooling; High 59
Heating; High 54 Heating; High 59
Electrical Data Input Power WCooling; 1,370 (215 - 1,600)
Heating; 1,570 (245 - 2,250)
Running Current ACooling; 6.3
Heating; 7.1
EER W/W Cooling; 3.21 (4.19 - 3.13)
BTU/hW Cooling; 10.9 (14.3 - 10.7)
COP W/W Heating; 3.50 (3.67 - 3.16)
BTU/hW Heating; 12.0 (12.5 - 10.8)
Starting Current A7.3
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CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

Unit CS-E15DKEW CU-E15DKE
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”
Drain
Hose
Inner diameter mm 12 —
Length m0.65 —
Power Cord Length
Number of core-wire
—— —
—
Dimensions Height inch (mm) 11 - 1/32 (280) 29 - 17/32 (750)
Width inch (mm) 31 - 15/32 (799) 34 - 7/16 (875)
Depth inch (mm) 7 - 7/32 (183) 13 - 19/32 (345)
Net Weight lb (kg) 20 (9) 106 (48)
Compressor Type —Involute scroll
Motor Type —Brushless (4-pole)
Rated Output W—700
Air Circulation Type Cross-flow Fan Propeller Fan
Material ASHT-18 P.P
Motor Type Transistor (8-poles) Transistor (8-poles)
Rate Output W30 40
Fan Speed Lo (Cool/Heat) rpm 980 / 1,160 —
Me (Cool/Heat) rpm 1,220 / 1,360 —
Hi (Cool/Heat) rpm 1,460 / 1,560 660 / 640
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)
2/15 1/28
FPI 21 18
Size (W × H × L) mm 610 × 315 × 25.4 871.7 × 711.2 × 22
Refrigerant Control Device —Expansion Valve
Refrigeration Oil (c.c) —RB68A (360)
Refrigerant (R410A) kg (oz) —1.06 (37.4)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
Length mm — —
Capillary Tube Flow Rate l/min — —
Inner Diameter mm — —
Air Filter Material
Style
P.P.
Honeycomb
—
• Specifications are subjected to change without notice for further improvement.
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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 kW
kcal/h
BTU/h
5.30 (0.90 - 6.00)
4,560 (770 - 5,160)
18,100 (3,070 - 20,500)
Heating Capacity kW
kcal/h
BTU/h
6.60 (0.90 - 8.00)
5,680 (770 - 6,880)
22,500 (3,070 - 27,300)
Moisture Removal l/h
Pint/h
2.9
(6.1)
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; 12.3 (430) —
Heating; 13.0 (460)
Me m3/min (cfm) Cooling; 13.9 (490) —
Heating; 14.6 (520)
Hi m3/min (cfm) Cooling; 15.2 (540) 40.0 (1,410)
Heating; 16.7 (590)
dB (A) Cooling; High 44, Low 37 Cooling; 47
Heating; High 44, Low 37 Heating; 47
Noise Level
Power level dB Cooling; High 57 Cooling; High 60
Heating; High 57 Heating; High 60
Electrical Data Input Power WCooling; 1,650 (215 - 2,050)
Heating; 1,790 (245 - 2,650)
Running Current ACooling; 7.5
Heating; 8.1
EER W/W Cooling; 3.21 (4.19 - 2.93)
BTU/hW Cooling; 11.0 (14.3 - 10.0)
COP W/W Heating; 3.69 (3.67 - 3.02)
BTU/hW Heating; 12.6 (12.5 - 10.3)
Starting Current A8.3
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-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

Unit CS-E18DKEW CU-E18DKE
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 12 —
Length m0.65 —
Power Cord Length
Number of core-wire
—— —
—
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) 24 (11) 108 (49)
Compressor Type —Involute scroll
Motor Type —Brushless (4-pole)
Rated Output W—900
Air Circulation Type Cross-flow Fan Propeller Fan
Material ASHT-18 P.P
Motor Type Transistor (8-poles) Transistor (8-poles)
Rate Output W30 40
Fan Speed Lo (Cool/Heat) rpm 1,170 / 1,240 —
Me (Cool/Heat) rpm 1,330 / 1,395 —
Hi (Cool/Heat) rpm 1,450 / 1,580 660 / 640
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)
2/15 2/34
FPI 21 16
Size (W ×H×L) mm 810 ×315 ×25.4 849.3
878
×714 ×36.4
Refrigerant Control Device —Expansion Valve
Refrigeration Oil (c.c) —RB68A (360)
Refrigerant (R410A) kg (oz) —1.18 (41.7)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
Length mm — —
Capillary Tube Flow Rate l/min — —
Inner Diameter mm — —
Air Filter Material
Style
P.P.
Honeycomb
—
• Specifications are subjected to change without notice for further improvement.
9
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 kW
kcal/h
BTU/h
6.30 (0.90 - 7.10)
5,420 (770 - 6,110)
21,500 (3,070 - 24,200)
Heating Capacity kW
kcal/h
BTU/h
7.20 (0.90 - 8.50)
6,190 (770 - 7,310)
24,600 (3,070 - 29,000)
Moisture Removal l/h
Pint/h
3.5
(7.4)
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; 12.5 (440) —
Heating; 13.5 (480)
Me m3/min (cfm) Cooling; 14.4 (510) —
Heating; 14.9 (530)
Hi m3/min (cfm) Cooling; 16.2 (570) Cooling; 42.8 (1,510)
Heating; 17.3 (610) Heating; 41.5 (1,460)
dB (A) Cooling; High 45, Low 37 Cooling; 48
Heating; High 45, Low 37 Heating; 49
Noise Level
Power level dB Cooling; High 58 Cooling; High 61
Heating; High 58 Heating; High 62
Electrical Data Input Power WCooling; 2,210 (215 - 2,540)
Heating; 2,100 (245 - 2,750)
Running Current ACooling; 9.9
Heating; 9.3
EER W/W Cooling; 2.85 (4.19 - 2.80)
BTU/hW Cooling; 9.7 (14.3 - 9.5)
COP W/W Heating; 3.43 (3.67 - 3.09)
BTU/hW Heating; 11.7 (12.5 - 10.5)
Starting Current A9.7
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-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

Unit CS-E21DKES CU-E21DKE
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 12 —
Length m0.65 —
Power Cord Length
Number of core-wire
—— —
—
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) 24 (11) 112 (51)
Compressor Type —Involute scroll
Motor Type —Brushless (4-pole)
Rated Output W—900
Air Circulation Type Cross-flow Fan Propeller Fan
Material ASHT-18 P.P
Motor Type Transistor (8-poles) Transistor (8-poles)
Rate Output W30 40
Fan Speed Lo (Cool/Heat) rpm 1,170 / 1,270 —
Me (Cool/Heat) rpm 1,355 / 1,400 —
Hi (Cool/Heat) rpm 1,520 / 1,610 700 / 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)
2/15 2/34
FPI 19 18
Size (W ×H×L) mm 810 ×315 ×25.4 839.5
868
×714 ×36.4
Refrigerant Control Device —Expansion Valve
Refrigeration Oil (c.c) —RB68A (360)
Refrigerant (R410A) kg (oz) —1.29 (45.5)
Thermostat Electronic Control —
Protection Device Electronic Control Electronic Control
Length mm — —
Capillary Tube Flow Rate l/min — —
Inner Diameter mm — —
Air Filter Material
Style
P.P.
Honeycomb
—
• Specifications are subjected to change without notice for further improvement.
11
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
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CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

4.1.2. CS-E18DKEW CS-E21DKES
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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
14
CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

5 Refrigeration Cycle Diagram
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CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

6 Block Diagram
16
CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

7 Wiring Diagram
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CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

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-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 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 +3.25
Table (d): Quiet (Lo) Mode Shifting
Mode: Period, X (min): Temperature Shift (°C)
Cooling, Soft Dry 20 min X50 min -3.0
50 min X110 min -4.0
110 min X440 min -5.0
Table (e): Fan Speed Shifting
Mode: Fan Speed: Temperature Shift (°C)
Cooling Lo -0.25
Me-, Me, Me+, Auto 0.00
Hi +0.25
Soft Dry All +0.25
Heating Lo +1.50
Me-, Me, Me+, Auto +0.75
Hi +0.75
Table (f): 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-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE

CompHz = Freq. A ×Freq. H + Freq. C
Example Calculation:
Model No.: E18DK
Operation Mode: Cooling
When Intake Air Temperature - Internal setting Temperature:
1.5°C
CompHz =Freq. A ×Freq. H + Freq. C
=1.53 ×46 + 2.5
=72 Hz (It cuts down less than a decimal point)
Cooling & Soft Dry E18DK E21DK
Freq. A Freq. C Freq. A Freq. C
Low Load (Freq. H 9) 1.2 5.0 1.7 7.0
High Load (Freq. H > 10) 1.53 2.5 2.0 4.0
Heating E18DK E21DK
Freq. A Freq. C Freq. A Freq. C
Low Load (Freq. H 11) 1.6 8.0 1.9 7.0
High Load (Freq. H > 12) 2.2 1.0 2.35 1.0
Freq. Range E18DK E21DK
Cooling Fc 72 96
Operation Range 12 ~ 86 12 ~ 102
Heating Fh 86 92
Operation Range 14 ~ 128 14 ~ 128
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 1.5 111
2-1.5 1.0 111
3-1.0 0.5 14 811
4-0.5 0.0 20 815
50.0 -0.5 27 822
60.5 -1.0 35 11 27
71.0 -1.5 43 11 36
81.5 -2.0 46 11 39 Fc, Fh
92.0 -2.5 46 11 39 Fc, Fh
10 2.5 -3.0 46 11 39 Fc, Fh
11 Nil -3.5 Nil Nil 39 Fh
12 Nil -4.0 Nil Nil 39 Fh
Operating Frequency Calculation Formula:
Remarks:
When Freq. H is equal to 46 (Cooling), 39 (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 (46), Fh (39).
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-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE