Panasonic CS-C18DKD 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-C18DKD CU-C18DKD 6
3.2. CS-C24DKD CU-C24DKD 8
© 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-C18DKD CU-C18DKD
CS-C24DKD CU-C24DKD
4 Dimensions 10
4.1. Indoor Unit & Remote Control 10
4.2. Outdoor Unit 11
5 Refrigeration Cycle Diagram 13
6 Block Diagram 14
7 Wiring Diagram 15
8 Operation Details 17
8.1. Cooling Operation 17
Air Conditioner
CONTENTS
Page Page
Order No. MAC0411054C3

8.2. Soft Dry Operation 18
8.3. Automatic Operation 19
8.4. Operation Control 20
8.5. Indoor Fan Speed Control 23
8.6. Outdoor Fan Speed Control 24
8.7. Vertical Airflow Direction Control 24
8.8. Horizontal Airflow Direction Control 25
8.9. Powerful Operation 25
8.10. Quiet Operation 26
8.11. Ionizer Operation 27
8.12. Timer Control 28
8.13. Random Auto Restart Control 28
8.14. Remote Control Signal Receiving Sound 28
9 Operating Instructions 29
10 Installation Instructions 35
10.1. Safety Precautions 35
10.2. Indoor Unit 38
10.3. Outdoor Unit 42
11 3-way Valve 45
11.1. Air Purging of the Piping and Indoor Unit 46
12 Servicing Information 52
12.1. Indoor Electronic Controllers Removal Procedures 52
• High efficiency.
• Compact design.
• Wider range of horizontal discharge air.
• Air Filter with function to reduce dust and smoke.
• Automatic air swing and manual adjusted by Remote
Control for horizontal and vertical airflow.
• Long installation piping up to 25 meter.
• 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.
• Quality Improvement
− Random auto restart after power failure for safety restart
operation.
− Gas leakage detection.
− Prevent Compressor reverse cycle.
− Inner protector to protect Compressor.
− Noise prevention during soft dry operation.
− Blue coated Condenser for high resistance to corrosion.
− Anti-dew formation control (Cooling & Soft Dry).
• Operation Improvement
− Quiet mode to provide quiet operation.
− Powerful mode to reach the desired room temperature
quickly.
12.2. Cross Flow Fan and Indoor Fan Motor Removal
Procedures 53
12.3. Remote Control Reset 54
12.4. Auto OFF/ON Button 55
13 Troubleshooting Guide 56
13.1. Refrigeration cycle system 56
14 Technical Data 58
14.1. Thermostat characteristics 58
14.2. Operation characteristics 58
15 Exploded View (Indoor Unit) 60
15.1. CS-C18DKD CS-C24DKD 60
16 Replacement Parts List (Indoor Unit) 61
16.1. CS-C18DKD CS-C24DKD 61
17 Exploded View (Outdoor Unit) 62
17.1. CU-C18DKD 62
17.2. CU-C24DKD 63
18 Replacement Parts List (Outdoor Unit) 64
18.1. CU-C18DKD CU-C24DKD 64
19 Electronic Circuit Diagram 65
19.1. Indoor Unit & Outdoor Unit 65
19.2. Remote Control 70
19.3. Print Pattern Indoor Unit Printed Circuit Board 71
19.4. Print Pattern Indicator & Receiver Printed Circuit Board 72
− Ionizer control for generating negative ion in discharge
air.
− 24-hour timer setting.
• Serviceability Improvement
− Removable and washable Front Panel.
1 Features
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

2 Functions
2.1. Remote Control
Operation Start/Stop
OFF / ON Room Temperature Setting
TEMP.
Operation Mode Selection
•AUTO Automatic Operation
•COOL Cooling Operation
•DRY Soft Dry Operation
MODE
Time / Timer Setting
• Hours and minutes setting.
Clock Setting
• Current time setting.
Ionizer Operation Start/Stop
Indoor Fan Speed Selection
FAN SPEED
•FAN Low Fan Speed
•FAN Medium Fan Speed
•FAN High Fan Speed
•AUTO Automatic Fan Speed
FAN
Vertical Airflow Direction Control
• 24-hour, OFF / ON Real Timer Setting.
ON-TIMER
OFF-TIMER Timer Operation Selection
SET
CANCEL Timer Operation Set / Cancel
• ON Timer and OFF Timer setting and
cancellation.
CLOCK
AIR SWING
• 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).
Powerful Operation Start/Stop
POWERFUL
Quiet Operation Start/Stop
QUIET
Cooling, Soft Dry Operation.
• Increase or decrease set temperature
(16°C to 30°C)
Automatic Operation
•Operation with 2°C higher than
standard temperature.
• Operation with standard temperature.
•Operation with 2°C lower than
standard temperature.
<
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

2.2. Indoor Unit
Random Auto Restart Control
• Unit will be restarted, when resume from
power failure, at previous setting.
Anti-Freezing Control
• To prevent indoor heat exchanger from
freezing.
Ionizer Operation
• Generate and discharge negative ion.
Indoor Fan Speed Control
• Manual control fan speed
(High, Medium and Low).
• Automatic fan speed
• Automatic air swing and manual adjusted
by remote control for vertical and
horizontal airflow.
Airflow Direction Control
Automatic Operation Button
• Press for < 5 second to operate Automatic
operation mode.Use when the remote
control cannot be used.
• Press for >5 second to operate Cooling
operation mode and compressor force
to on (“beep” sound will be heard). Used
when test running or servicing.
• Within 20 second of Cooling operation,
press continuously for >5 second to enter
various setting mode. “beep, beep” sound
will be heard. (Used to toggle remote
control signal receiving sound or select
remote control transmission code.)
AUTO
OFF / ON
Operation Indication Lamps (LED)
•POWER (Green) ........ Lights up in operation,
blinks in Automatic
Operation judging.
•QUIET (Orange) ........ Lights up in Quiet
Operation.
•TIMER (Orange) ....... Lights up in Timer
Setting.
•POWERFUL (Orange) .. Lights up in Powerful
Operation.
•
ION (Green) ........... Lights up in Ionizer
Operation.
•
SUPER
ALLERU-BUSTER (Blue)
... Lights up in operation.
Operation Mode
• Cooling, Soft Dry and Automatic Operation.
Timer Operation
• Delay OFF/ON Timer control.
Powerful Operation
• Reaches the desired room temperature
quickly.
Time Delay Safety Control
• Restarting is inhibited for approximately
3 minutes.
Quiet Operation
• To provide quiet operation.
7 Minutes Time Save Control
• To reduce the built up humidity inside
the room.
Anti-Dew Formation Control
• Anti-Dew Formation Control for indoor
unit discharge area.
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

2.3. Outdoor Unit
• To protect compressor from reverse
rotation when there is an instantaneous
power failure.
60 Secs. Forced Operation Control
• Once the compressor is activated, it
does not stop within the first 60 secs.
However, it stops immediately with
remote control stop signal.
Overload Protector
• Inner protector.
Compressor Reverse Rotation
Protection Control
Outdoor Fan Operation Control
C24DK
• 6-pole induction motor (2 speed).
• For Cooling or Soft Dry operation
Hi-speed ............. When outdoor
temperature reaches to 31°C.
Lo-speed ............. When outdoor
temperature reaches to 29°C.
C18DK
• 6-pole induction motor (1 speed).
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

3 Product Specifications
3.1. CS-C18DKD CU-C18DKD
Unit CS-C18DKD CU-C18DKD
Power Source (Phase, Voltage, Cycle) ,V,Hz Single, 220 - 230, 50
Cooling Capacity kW (BTU/h) 5.30 (18,100) - 5.30 (18,100)
Moisture Removal l/h (Pint/h) 2.9 (6.1)
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) 12.5 (440) - 12.5 (440) —
Me m3/min (cfm) 13.6 (480) - 13.6 (480) —
Hi m3/min (cfm) 14.8 (520) - 14.8 (520) 30.3 (1,070) - 30.8 (1,090)
SHi m3/min (cfm) 15.5 (550) - 15.5 (550) —
Noise Level dB (A) High 42 - 42, Low 37 - 37 High 53 - 54
Electrical Data Input Power kW 1.72 - 1.76
Running Current A 8.2 - 8.3
EER W/W (BTU/hW) 3.08 - 3.01 (10.52 - 10.28)
Starting Current A 36.0
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”
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 mm 650 —
Power Cord Length m 1.9 —
Number of core-wire 3 (1.5 mm2) —
Dimensions Height inch (mm) 10 - 13/16 (275) 21 - 1/4 (540)
Width inch (mm) 39 - 9/32 (998) 30 - 23/32 (780)
Depth inch (mm) 9 - 1/16 (230) 11 - 3/8 (289)
Net Weight lb (kg) 24 (11.0) 90 (41.0)
Compressor Description —Rotary (1 cylinder)
rolling piston type
Motor Type —Induction (2-poles)
Rated Output kW — 1.5
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASHT-18 PP
Motor Type Transistor (8-poles) Induction (6-poles)
Input W 65.1 86.5
Rated Output W 30 36
Fan Speed Low rpm 1,150 - 1,150 —
Medium rpm 1,250 - 1,250 —
High rpm 1,360 - 1,360 830 - 855
SuperHigh rpm 1,420 - 1,420 —
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Louver Fin
Row / Stage (Plate fin configuration, forced draft)
2×15 2×24
FPI 21 16
Size (W × H × L) mm 810 × 315 × 25.4 723.5
744.2
× 504.0 × 25.4
Refrigerant Control Device —Capillary Tube
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Unit CS-C18DKD CU-C18DKD
Refrigeration Oil (cm3) — SUNISO 4GSI
Refrigerant (R-22) g (oz) — 980 (34.6)
Thermostat — —
Protection Device — Inner Protector
Capillary Tube Length mm — 596
Flow Rate l/min — 21.0
Inner Diameter mm — 1.9
Air Filter Material
Style
P.P.
Honeycomb
—
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 40 µF, 400VAC
Fan Motor Capacitor µF, VAC — 2.0 µF, 440VAC
Note:
• Specifications are subject to change without notice for further improvement.
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

3.2. CS-C24DKD CU-C24DKD
Unit CS-C24DKD CU-C24DKD
Power Source (Phase, Voltage, Cycle) ,V,Hz Single, 220 - 230, 50
Cooling Capacity kW (BTU/h) 7.03 (24,000) - 7.03 (24,000)
Moisture Removal l/h (Pint/h) 4.0 (8.5)
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) 13.9 (492) - 13.9 (492) ←
Me m3/min (cfm) 15.4 (544) - 15.4 (544) —
Hi m3/min (cfm) 16.9 (597) - 16.9 (597) ←
SHi m3/min (cfm) 17.5 (617) - 17.5 (617) —
Noise Level dB (A) High 46 - 46, Low 40 - 40 High 53 - 54
Electrical Data Input Power kW 2..35 - 2.41
Running Current A 11.5 - 11.6
EER W/W (BTU/hW) 2.99 - 2.92 (10.21 - 9.96)
Starting Current A 65.0
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 mm 650 —
Power Cord Length m 1.9 —
Number of core-wire 3 (2.5 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) 24 (11.0) 128 (58.0)
Compressor Description —Rotary (1 cylinder) rolling piston
type
Motor Type —Induction (2-poles)
Rated Output kW — 2.2
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASHT-18 PP
Motor Type Transistor (8-poles) Induction (6-poles)
Input W 47.3 133.5
Rated Output W 30 66
Fan Speed Low rpm 1,250 - 1,250 420 - 450
Medium rpm 1,390 - 1,390 —
High rpm 1,530 - 1,530 770 - 785
SuperHigh rpm 1,590 - 1,590 —
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugated Fin
Row / Stage (Plate fin configuration, forced draft)
2×15 2×34
FPI 21 18
Size (W × H × L) mm 810 × 315 × 25.4 850.5
870.5
× 714 × 25.4
Refrigerant Control Device —Capillary Tube
Refrigeration Oil (cm3) — SUNISO 4GDID or ATMOS
M60 or ATMOS 56M
Refrigerant (R-22) g (oz) — 1,440 (50.8)
Thermostat — Mechanical Control
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

Unit CS-C24DKD CU-C24DKD
Protection Device — Inner Protector
Capillary Tube Length mm — 754
Flow Rate l/min — 22.0
Inner Diameter mm — 2.0
Air Filter Material
Style
P.P.
Honeycomb
—
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 45 µF, 400/440VAC
Fan Motor Capacitor µF, VAC — 3.5 µF, 440VAC
Note:
• Specifications are subject to change without notice for further improvement.
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

4 Dimensions
4.1. Indoor Unit & Remote Control
4.1.1. CS-C18DKD CS-C24DKD
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

4.2. Outdoor Unit
4.2.1. CU-C18DKD
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

4.2.2. CU-C24DKD
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5 Refrigeration Cycle Diagram
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6 Block Diagram
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7 Wiring Diagram
CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD
15

CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD
16

8 Operation Details
8.1. Cooling Operation
• Cooling operation can be set using remote control.
• This operation is applied to cool down the room temperature reaches the setting temperature set on the remote control.
• The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C
to 30°C.
• During cooling operation, the compressor will stop running and restart as shown in below figure.
8.1.1. Cooling Operation Time Diagram
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

8.2.1. Soft Dry Operation Time Diagram
8.2. Soft Dry Operation
• Soft Dry operation can be set using remote control.
• Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.
• This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
• When operation begins, Soft Dry will be switched “ON” for a maximum 10 minutes, then Soft Dry operation will be turned “OFF”
for a minimum 6 minutes. After that, the Soft Dry operation will be “ON” and “OFF” based on the setting temperature as shown
in below figure.
• However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will
start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point.
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

8.3. Automatic Operation
• Automatic operation can be set using remote control.
• This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature.
• After judged the temperature, the operation mode is determined by refering to the below standard.
• Then, the unit start to operate at determined operation mode, until it is switched off using remote control, with the setting
temperature as shown in below table.
• The setting temperature for all the operations can be changed one level up or one level down from the standard temperature
as shown in below table by pressing on the temperature up or temperature down button at remote control.
• The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the
circuit of JX1 at indoor electronic controller.
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD

8.4. Operation Control
(For 8.4.1. to 8.4.7. information applies only to Cooling and Soft Dry Operation)
8.4.1. Restart Control (Time Delay Safety Control)
• When the thermo-off temperature (temperature which compressor stops to operate) is reached during:-
− Cooling operation - the compressor stops for 3 minutes (minimum) before resume operation.
− Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.
• If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation
stop, although the unit is turn on again within the period.
• This phenomenon is to balance the pressure inside the refrigerant cycle.
8.4.2. 7 Minutes Time Save Control
• The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the
compressor ON temperature (A) and compressor OFF temperature (B) during the period.
• This phenomenon is to reduce the built up humidity inside a room.
8.4.3. 60 Seconds Forced Operation
• Once the air conditioner is turned on, the compressor will not stop within 60 seconds in a normal operation although the intake
air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON operation button at the
remote control is permitted.
• The reason for the compressor to force operate at minimum 60 seconds is to allow the refrigerant oil run in a full cycle and
return back to the outdoor unit.
8.4.4. Anti-Freezing Control
• If the temperature of the indoor heat exchanger falls below 2°C continuously for 4 minutes or more, the compressor turns off.
The fan speed setting remains the same.
• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid form
returning to the compressor.
• Compressor will restart again when the indoor heat exchanger temperature rises to 10°C (Recovery).
• Restart control (Time Delay Safety Control) will be applied in this Control if the recovery time is too short.
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CS-C18DKD CU-C18DKD / CS-C24DKD CU-C24DKD