Panasonic CS-PW18DKE 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-PW18DKE CU-PW18DKE 6
4 Dimensions 8
4.1. Indoor Unit & Remote Control 8
4.2. Outdoor Unit 9
5 Refrigeration Cycle Diagram 10
6 Block Diagram 11
7 Wiring Diagram 12
8 Operation Details 13
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-PW18DKE CU-PW18DKE
8.1. Heating Operation 13
8.2. Cooling Operation 14
8.3. Soft Dry Operation 15
8.4. Automatic Operation 16
8.5. Operation Control 17
8.6. Indoor Fan Speed Control 22
8.7. Outdoor Fan Speed Control 24
8.8. Vertical Airflow Direction Control 24
8.9. Timer Control 25
8.10. Random Auto Restart Control 25
8.11. Remote Control Signal Receiving Sound 25
9 Operating Instructions 26
10 Installation Instructions 32
10.1. Safety Precautions 32
Air Conditioner
CONTENTS
Page Page
Order No. MAC0501029C2

10.2. Indoor Unit 35
10.3. Outdoor Unit 39
11 Installation And Servicing Air Conditioner Using R410A 42
11.1. Outline 42
11.2. Tools For Installing/Servicing Refrigerant Piping 43
11.3. Refrigerant Piping Work 47
11.4. Installation, Transferring, Servicing 49
12 Servicing Information 53
12.1. Distinction Of Lead Free (PbF) Printed Circuit Board 53
12.2. Indoor Electronic Controllers Removal Procedures 53
12.3. Cross Flow Fan and Indoor Fan Motor Removal
Procedures 54
12.4. Remote Control Reset 55
12.5. Auto OFF/ON Button 56
13 Troubleshooting Guide 57
13.1. Refrigeration Cycle System 57
13.2. Relationship Between The Condition Of The Air
Conditioner And Pressure And Electric Current 58
13.3. Diagnosis Methods Of A Malfunction Of A Compressor
And 4-way Valve 58
• 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 vertical airflow.
• Long installation piping up to 25 meter.
• 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.
− Pre coated Condenser for high resistance to corrosion.
− Anti-dew formation control (Cooling & Soft Dry).
− Overload protection control (Heating)
− Outdoor fan control.
− Compressor high pressure control.
14 Technical Data 59
14.1. Thermostat Characteristics 59
14.2. Sensible Capacity Chart 60
14.3. Operation Characteristics 61
15 Exploded View (Indoor Unit) 62
15.1. CS-PW18DKE 62
16 Replacement Parts List (Indoor Unit) 63
16.1. CS-PW18DKE 63
17 Exploded View (Outdoor Unit) 64
17.1. CU-PW18DKE 64
18 Replacement Parts List (Outdoor Unit) 65
18.1. CU-PW18DKE 65
19 Electronic Circuit Diagram 66
19.1. Indoor Unit & Outdoor Unit 66
19.2. Remote Control 72
19.3. Print Pattern Indoor Unit Printed Circuit Board 73
19.4. Print Pattern Outdoor Unit Printed Circuit Board 75
19.5. Print Pattern Indicator & Receiver Printed Circuit Board
76
• Operation Improvement
− 24-hour timer setting.
• Serviceability Improvement
− Removable and washable Front Panel.
• Environmental Friendly
− R410A, which does not contain chlorine, is used as its
refrigerant, so there is no danger of damage to the
ozone layer in stratosphere.
1 Features
2
CS-PW18DKE CU-PW18DKE

2 Functions
2.1. Remote Control
Vertical Airflow Control
•AUTO Automatic Vertical Airflow
Control
•Manual Vertical Airflow
Control (5 stages of
adjustment)
AIR SWING
Operation Mode Selection
•AUTO Automatic Operation
•HEAT Heating Operation
•COOL Cooling Operation
•DRY Soft Dry Operation
MODE
Indoor Fan Speed Selection
FAN SPEED
•FAN Low Fan Speed
•FAN Medium Fan Speed
•FAN High Fan Speed
•AUTO Automatic Fan Speed
FAN
Operation Start / Stop
OFF / ON
• 24-hour, OFF / ON Real Timer Setting.
ON-TIMER
OFF-TIMER Timer Operation Selection
Room Temperature Setting
TEMP.
Heating, 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.
SET
CANCEL Timer Operation Set / Cancel
• ON Timer and OFF Timer setting and
cancellation.
Clock Setting
• Current time setting.
CLOCK
Time / Timer Setting
• Hours and minutes setting.
CANCEL
OFF
TIMER
ON
TIMER
FAN
SPEED
AIR
SWING
AUTO
DRY
COOL
TIMER
ON
123
OFF
CLOCK RESET
SET
CANCEL
TEMP
FAN SPEED
AIR SWING
OFF/ON
MODE
3
CS-PW18DKE CU-PW18DKE

2.2. Indoor Unit
Automatic Operation Button
•Press for < 5 second to operate Automatic
operation mode. Used when the remote
control cannot be used.
•Press for ≥5 second to operate Cooling
operation mode and compressor force to on
(“beep”sound will 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 and
Hot Start operation.
•TIMER (Orange) ............ Lights up in Timer
Setting.
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.
Hot-Start Control
•To prevent cold air being discharge during
Heating operation starts.
Timer Operation
•OFF/ON Timer control.
Operation Mode
•Heating, Cooling, Soft Dry and Automatic
Operation.
•Vertical airflow control can be adjusted
automatically or manually by remote control.
•Horizontal airflow control can be adjusted
manually by hand.
Airflow Direction Control
Time Delay Safety Control
•Restarting is inhibited for approximately 3
minutes.
Random Auto Restart Control
•Unit will be restarted, when resume from
power failure, at previous setting.
Indoor Fan Speed Control
•Manual control fan speed (High, Medium and
Low).
•Automatic fan speed.
Anti-Freezing Control
•To prevent indoor heat exchanger from
freezing.
Anti Cold Draft Control
•To prevent the cold draft during Heating
mode operation in thermo off condition.
CS-PW18DKE CU-PW18DKE
4

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
•6-pole induction motor.
•For Over-heating Protection, the Fan is
switched ON or OFF depending on the
piping temperature and the outdoor
temperature.
Deice Control
•To prevent frosting at outdoor heat
exchanger during Heating Operation.
4-Way Valve Control
•When the unit is switched to “OFF”
during Heating Operation, 4-way valve
stays at Heating position for 5 minutes.
CS-PW18DKE CU-PW18DKE
5

3 Product Specifications
3.1. CS-PW18DKE CU-PW18DKE
Unit CS-PW18DKE CU-PW18DKE
Power Source (Phase, Voltage, Cycle) ø,V,Hz Single, 230, 50
Cooling Capacity kW (BTU/h) 5.10 (17,400)
Heating Capacity kW (BTU/h) 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) Cooling; 13.1 (463)
Heating; 14.0 (494)
—
Me m3/min (cfm) Cooling; 15.1 (533)
Heating; 15.1 (533)
—
Hi m3/min (cfm) Cooling; 16.2 (570)
Heating; 16.4 (580)
29.0 (1,020)
SHi m3/min (cfm) — —
Noise Level dB (A) Cooling; High 45, Low 38
Heating; High 43, Low 38
Cooling; High 55
Heating; High 55
Power level dB Cooling; 58
Heating; 56
Cooling; 70
Heating; 70
Electrical Data Input Power kW Cooling; 1.75
Heating; 1.58
Running Current ACooling; 7.7
Heating; 6.9
EER W/W (BTU/hW) Cooling; 2.91 (9.94)
COP W/W (BTU/hW) Heating; 3.35 (11.46)
Starting Current A27.0
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 16 —
Length mm 650 —
Power Cord Length m1.9 —
Number of core-wire 3 (1.0 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) 99 (45.0)
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 W39.6 74.1
Rated Output W30 835
Fan Speed Low rpm Cooling; 1,190
Heating; 1,270
490
Medium rpm Cooling; 1,370
Heating; 1,370
—
High rpm Cooling; 1,470
Heating; 1,490
845
SuperHigh rpm — —
6
CS-PW18DKE CU-PW18DKE

Unit CS-PW18DKE CU-PW18DKE
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Precoat)
Fin Type Slit Fin Corrugated Fin
Row / Stage (Plate fin configuration, forced draft)
2×15 2×20
FPI 21 17
Size (W × H × L) mm 810 × 315 × 25.4 827.7
862.2
× 711.2 × 44
Refrigerant Control Device —Capillary Tube
Refrigeration Oil (cm3) — RB68A OR FREOL ALPHA 68M
Refrigerant (R410A) kg (oz) —1,33 (47.0)
Thermostat Electronic Control Electronic Control
Protection Device —Inner Protector
Capillary Tube Length mm —Cooling; 1,180, Heating; 1,048
Flow Rate l/min —Cooling; 8.7, Heating; 14.0
Inner Diameter mm —Cooling; 1.5, Heating; 1.8
Air Filter Material
Style
P.P.
Honeycomb
—
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC —50 µF, 400VAC
Fan Motor Capacitor µF, VAC —2.0 µF, 450VAC
Note:
• Specifications are subject to change without notice for further improvement.
7
CS-PW18DKE CU-PW18DKE

4 Dimensions
4.1. Indoor Unit & Remote Control
4.1.1. CS-PW18DKE
8
CS-PW18DKE CU-PW18DKE

4.2. Outdoor Unit
4.2.1. CU-PW18DKE
9
CS-PW18DKE CU-PW18DKE

5 Refrigeration Cycle Diagram
10
CS-PW18DKE CU-PW18DKE

6 Block Diagram
11
CS-PW18DKE CU-PW18DKE

7 Wiring Diagram
CS-PW18DKE CU-PW18DKE
12

8 Operation Details
8.1. Heating Operation
• Heating operation can be set using remote control.
• This operation is applied to warm 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 heating operation, the compressor will stop running and restart as shown in below figure.
8.1.1. Heating Operation Time Diagram
13
CS-PW18DKE CU-PW18DKE

8.2. 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.
8.2.1. Cooling Operation Time Diagram
14
CS-PW18DKE CU-PW18DKE

8.3.1. Soft Dry Operation Time Diagram
8.3. 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.
15
CS-PW18DKE CU-PW18DKE

8.4. Automatic Operation
• Automatic operation can be set using remote control.
• This operation starts to operate with indoor fan at SLo speed for 25 seconds to judge the intake air temperature.
• After judged the temperature, the operation mode is determined by referring 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.
• Operation mode will be determine again for judgement after 1 hour of operation, if the room temperature reaches to set
temperature and compressor off time is over 7 minutes 30 seconds continuously.
The present operation mode will be continued, if the room temperature does not reach to set temperature (Compressor keeps running)
eventhough after 1 hour from automatic operation mode started.
Present Judgement Next Mode
Mode Cooling Soft Dry Heating
O O
Cooling 23°CCooling (Judgement: Not Applicable (Judgement:
Heating 23°C & Above) Below 23°C)
O O
Soft Dry 20°CSoft Dry Not Applicable (Judgement: (Judgement:
Heating 20°C & Above) Below 20°C)
O O
Heating Cooling (Judgement: Not Applicable (Judgement:
25°CHeating 25°C & Above) Below 25°C)
• Automatic Set Temperature
For each operation, set temperature will automatically set as shown below.
• 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.
Operation Hi (Standard) Lo
(+2°C) (±0°C) (-2°C)
Cooling 27°C25°C23°C
Soft Dry 24°C22°C20°C
Heating 23°C21°C19°C
• 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.
16
CS-PW18DKE CU-PW18DKE

8.5. Operation Control
(For 8.5.1 to 8.5.7 information applies only to Cooling and Soft Dry Operation)
8.5.1. 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.
8.5.2. 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.
8.5.3. 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.
8.5.4. 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.
17
CS-PW18DKE CU-PW18DKE

8.5.5. Compressor Reverse Rotation Protection Control
• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and
indoor heat exchanger is 2.5°C or less for continuous 2 minutes, compressor will stop and restart automatically.
• Time Delay Safety Control is activated before the compressor restart.
▲T = Intake air temperature - Indoor heat exchanger temperature
• This is to prevent compressor from rotate reversely when there is an instantaneous power failure.
8.5.6. Starting Current Control
• When the compressor, outdoor fan motor and indoor fan motor are simultaneously started, the indoor fan motor will start to
operate at 1.6 second later.
• The reason of the difference is to reduce the starting current flow.
8.5.7. Anti-Dew Formation Control
• Purpose is to prevent dew formation on indoor unit air discharge area.
• The following conditions occur for 30 minutes continuously, anti-dew formation will activate:
− Remote Control setting temperature is less than 25°C.
− Compressor is on.
− Cooling operation mode.
− Indoor fan motor operate at low fan speed.
• This control is cancelled immediately when above condition is changed.
• Anti-Dew formation is control by:
1. Lo fan speed
Lo fan is changed to Lo+ fan
18
CS-PW18DKE CU-PW18DKE

(For 8.5.8 to 8.5.14 information applies only to Heating Operation)
8.5.8. Restart Control (Time Delay Safety Control)
• When the thermo-off temperature (temperature which compressor stops to operate) is reached during:-
− Heating operation - the compressor stops for 3 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.
8.5.9. Compressor Reverse Rotation Protection Control
• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between indoor heat
exchanger and intake air is 5°C or less for continuous 2 minutes, compressor will stop and restart automatically.
• Time Delay Safety Control is activated before the compressor restart.
▲T = Indoor heat exchanger temperature - Intake air temperature
• This is to prevent compressor from rotate reversely when there is an instantaneous power failure.
8.5.10. Overload Protection Control
• Outdoor Fan Control
− If the temperature of the Outdoor Heat Exchanger less than -3°C, Outdoor Fan is ON. The Outdoor Fan stop, when Outdoor
Heat Exchanger temperature is Tbor more according to Outdoor Air Temperature region as table below:
The Outdoor Fan restarts when the indoor heat exchanger temperature falls to 49°C.
During starting of Heating mode and after deice, Outdoor Fan ON for 90 sec. (Hi).
• Compressor High Pressure Control
− If the indoor heat exchanger becomes 68°C or more, the compressor will stop and restart automatically.
− Time Delay Safety Control is activated before the compressor restart.
8.5.11. 4-Way Valve Control
• 4-way valve always on during Heating operation. (except deicing operation)
• When the unit is switched off by remote control during Heating operation, the 4-way valve stay at Heating position for 5 minutes.
• This is to prevent the refrigerant flow process sound for being occur.
19
CS-PW18DKE CU-PW18DKE

8.5.12. Hot Start Control
• Hot Start Control is to prevent cool air discharge into the room when heating operation start.
• When Heating operation starts, Indoor fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.
• Hot start is completed when indoor heat exchanger rises to 42°C or operation over 4 minutes.
8.5.13. Anti Cold Draft Control
8.5.14. Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
• Normal Deicing
Deice operation detection commences in Heating operation starts or 60 minutes after previous deice operation. If the
outdoor piping temperature drops to -4°C for 50 sec. continuously during compressor is in operation, deice will start.
(There is no detection during Outdoor Fan stops.)
• Overload Deicing
During heating operation, if the outdoor Fan OFF duration (due to overload control) is accumulated up to 60 minutes and
after compressor starts for 1 minutes, deicing starts.
• Deicing ends when
(a) 12 minutes after deicing operation starts;
(b) The outdoor piping temperature rises to about 12°C.
• After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.
20
CS-PW18DKE CU-PW18DKE