Panasonic CS-W18CKP, CU-W24CKP5, CU-W18CKP5, CS-W24CKP Service Manual

1 Features 2

2 Functions

3

3 Product Specifications

6

4 Dimensions

10

5 Refrigeration Cycle Diagram

12

6 Block Diagram

13

7 Wiring Diagram

14

8 Operation Details

15

9 Operating Instructions

30

10 Installation Instructions

35

© 2002 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.

CS-W18CKP CU-W18CKP5
CS-W24CKP CU-W24CKP5

11 Installation and Servicing Air Conditioner Using R410A 45

12 Servicing Information

56

13 Troubleshooting Guide

60

14 Technical Data

62

15 Exploded View

66

16 Replacement Parts List

67

17 Exploded View

68

18 Replacement Parts List

69

19 Electronic Circuit Diagram

70

Room Air Conditioner

CONTENTS

Page Page

Order No. MAC0212093C2

•

High Efficiency

•

Compact Design

•

Comfort Environment

−

8 hours of sleep mode operation

−

Air filter with function to reduce dust and smoke

−

Wider range of horizontal discharge air

−

New Automatic air swing and manual adjusted by
remote control for horizontal airflow.

•

Auto Restart

−

Random auto restart after power failure for safety restart
operation

•

Removable and Washable Front Panel

•

Remote Control Self-illuminating Button

•

Catechin Air Purifying Filter

−

Trap dust, tobacco smoke and tiny particles

−

Prevent the growth of bacteria and viruses trapped

•

Solar Refreshing Deodorizing Filter

−

Remove unpleasant odour from the air

•

Quality Improvement

−

Gas leakage protection

−

Prevent compressor reverse cycle

−

Inner protector

−

Noise prevention during soft dry operation.

−

Anti-dew Formation Control (Cooling & Soft Dry)

−

Overload Protection Control (Heating)

−

Outdoor Fan Control

−

Compressor High Pressure Control

−

Blue Coated Condenser

−

High resistance to corrosion.

•

Operation Improvement

−

Economy mode to reduce electrical power consumption

−

Powerful mode to reach the desired room temperature
quickly

•

Long Installation Piping

−

Long piping up to 25 meter

•

24-hour Timer Setting

•

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-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

2 Functions

Remote Control

Operation OFF / ON

OFF / ON I

Room Temperature Setting

TEMP.

Operation Mode Selection

•

AUTO

Automatic Operation Mode

•

HEAT

Heating Operation Mode

•

COOL

Cooling Operation Mode

•

DRY

Soft Dry Operation Mode

MODE

TIME

Time / Timer Setting

• Hours and minutes setting.

Clock Setting

• Current time setting.

Sleep Mode Operation OFF / ON

SLEEP

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 Mode Operation OFF/ON

POWERFUL

Economy Mode Operation OFF/ON

ECONOMY

Heating, Cooling, Soft Dry Operation.

• Temperature Setting (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.

Self illuminating

button

3

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Indoor Unit

Sleep Mode Auto Control

• Indoor Fan operates refer to Indoor Fan
Speed control.

• Operation stops after 8 hours.

Indoor Fan Speed Control

• High, Medium and Low.

• Automatic Fan Speed Mode
– Heating : Fan speed varies from Me

→ SSLo in accordance with
indoor heat exchanger.

– Cooling : Fan rotates at Hi, Me and

SLo speed. Deodorizing
control is available.

– Soft Dry : Fan rotates at SLo speed.

Deodorizing control is
available.

• Automatic air swing and manual adjusted
by remote control for vertical and horizontal
airflow.

Airflow Direction Control

Automatic Operation Button

• Press for < 5s to operate Automatic
operation mode.
(Used when the remote control cannot be used.)

• Press continuously for 5s or < 10s to
operate Test Run/Pump down. “Beep”
sound will be heard at the 5th second.
(Used when test running or servicing.)

• Press continuously for 10s and above to
omit or resume the remote control signal
receiving sound. “Beep, beep” sound will
be heard at the 10th second.

AUTO

OFF / ON

Operation Indication Lamps (LED)

•

POWER

(Green).......... Lights up in operation,

blinks in Automatic
Operation Mode judging
and Hot Start operation.

•

SLEEP

(Orange) ......... Lights up in Sleep Mode

Operation.

•

TIMER

(Orange) .........

Lights up in Timer Setting.

•

POWERFUL

(Orange) ...Lights up in Powerful

Mode Operation.

•

ECONOMY

(Green) ...... Lights up in Economy

Mode Operation.

Operation Mode

• Heating, Cooling, Soft Dry and Automatic
Mode.

Powerful Operation

•

Reaches the desired room temperature quickly.

Time Delay Safety Control

• Restarting is inhibited for appro. 3 minutes.

Economy Operation

• To reduce electrical power consumption.

7 Minutes Time Save Control

• Cooling Operation only.

Anti-Dew Formation Control

• Anti-Dew Formation Control for indoor unit
discharge area.

Random Auto Restart Control

• Operation is restarted randomly after
power failure at previous setting mode.

Anti-Freezing Control

• Anti-Freezing control for indoor heat
exchanger. (Cooling and Soft Dry)

Hot-Start Control

• At Heating Operation the indoor fan will
operate at SLo speed when indoor heat
exchanger temperature reaches 30°C.

Anti Cold Draft Control

• The indoor fan operates at Lo– (30 sec.)
after that SSLo when the indoor heat
exchanger temperature is low.
(During Heating mode thermal off)

4

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Outdoor Unit

• To protect compressor from reverse
rotation when there is a 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 (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.

• For Heating operation

Hi-speed ............. When outdoor

temperature reaches to 13.5°C.

Lo-speed ............. When outdoor

temperature reaches to 15.5°C.

• 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.

5

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

3 Product Specifications

Unit CS-W18CK CU-W18CK

Power Source Phase, Voltage, Cycle Single, 230, 50 Hz

Cooling Capacity kW (BTU/h) 5.30 (18,100)

Heating Capacity kW (BTU/h) 5.55 (18,900)

Moisture Removal l/h (Pint/h) 2.9 (6.1)

Airflow Method OUTLET

INTAKE

SIDE VIEW TOP VIEW

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 13.3 (470)

Heating; 14.2 (500)

—

Indoor Air (Me) m3/min (cfm) Cooling; 14.8 (520)

Heating; 14.8 (520)

—

Indoor Air (Hi) m3/min (cfm) Cooling; 15.6 (550)

Heating; 16.4 (580)

40.0 (1,410)

Indoor Air (SHi) m3/min (cfm) Cooling; 16.4 (580)

Heating; 16.4 (580)

—

Noise Level dB (A) Cooling; High 43, Low 38

Heating; High 42, Low 38

Cooling; High 55
Heating; High 56

Power level dB Cooling; 55

Heating; 53

Cooling; 68
Heating; 69

Electrical Data Input Power kW Cooling; 1.65

Heating; 1.70

Running Current A Cooling; 7.4

Heating; 7.6
EER W/W (BTU/hW) Cooling; 3.21 (10.95)
COP W/W (BTU/hW) Heating; 3.26 (11.13)
Starting Current A 27.0

Piping Connection Port
(Flare piping)

inch
inch

G ; Half Union 1/2”

L ; Half Union 1/4”

G ; 3-way valve 1/2”

L ; 3-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) 26 - 31/32 (685)

Width inch (mm) 39 - 9/32 (998) 31 - 1/2 (800)
Depth inch (mm) 8 - 9/32 (210) 11 - 13/16 (300)

Net Weight lb (kg) 24 (11.0) 121 (55.0)
Compressor Type — Rotary (1 cylinder)

rolling piston type
Motor Type — Induction (2-poles)
Rated Output kW — 1.4

6

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Unit CS-W18CK CU-W18CK

Air Circulation Type Cross-flow Fan Propeller Fan

Material ASHT-18 PC + AES + Glass Fiber 15%

Motor Type Transistor (8-poles) Induction (4-poles)

Input W 53.5 130
Rated Output W 30 67
Fan Speed Low rpm Cooling; 1,160

Heating; 1,240

640

Medium rpm Cooling; 1,290

Heating; 1,290

—

High rpm Cooling; 1,360

Heating; 1,400

1,000

SuperHigh rpm Cooling; 1,400

Heating; 1,400

—

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 2×26
FPI 21 16
Size (W × H × L) mm 810 × 315 × 25.4 769.2

732.9

× 660.4 × 44

Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — RB68A OR FRE0L ALPHA 68M
Refrigerant (R410A) g (oz) — 1,620 (57.2)
Thermostat Electronic Control Mechanical 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, 370VAC
Fan Motor Capacitor µF, VAC — 3.0 µF, 450VAC

Note:

•

Specifications are subject to change without notice for further improvement.

7

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Unit CS-W24CK CU-W24CK

Power Source Phase, Voltage, Cycle Single, 230, 50 Hz

Cooling Capacity kW (BTU/h) 7.03 (24,000)

Heating Capacity kW (BTU/h) 7.72 (26,300)

Moisture Removal l/h (Pint/h) 4.0 (8.5)

Airflow Method OUTLET

INTAKE

SIDE VIEW TOP VIEW

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 14.4 (510)

Heating; 15.6 (550)

—

Indoor Air (Me) m3/min (cfm) Cooling; 16.4 (580)

Heating; 16.4 (580)

—

Indoor Air (Hi) m3/min (cfm) Cooling; 17.5 (620)

Heating; 18.1 (640)

Cooling; 47.2 (1,670)

Indoor Air (SHi) m3/min (cfm) Cooling; 18.1 (640)

Heating; 18.1 (640)

—

Noise Level dB (A) Cooling; High 47, Low 41

Heating; High 46, Low 41

Cooling; High 60
Heating; High 61

Power level dB Cooling; 59

Heating; 57

Coolling; 74
Heating; 74

Electrical Data Input Power kW Cooling; 2.78

Heating; 2.69

Running Current A Cooling; 13.1

Heating; 12.9
EER W/W (BTU/hW) Cooling; 2.53 (8.63)
COP W/W (BTU/hW) Heating; 2.87 (9.79)
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 ; 3-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) 26 - 31/32 (685)

Width inch (mm) 39 - 9/32 (998) 31 - 1/2 (800)
Depth inch (mm) 8 - 9/32 (210) 11 - 13/16 (300)

Net Weight lb (kg) 24 (11.0) 135 (61.0)
Compressor Type — Rotary (1 cylinder) rolling piston

type
Motor Type — Induction (2-poles)
Rated Output kW — 2.2

8

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Unit CS-W24CK CU-W24CK

Air Circulation Type Cross-flow Fan Propeller Fan

Material ASHT-18 PC + AES + Glass Fiber 15%

Motor Type Transistor (8-poles) Induction (4-poles)

Input W 53.5 190.0
Rated Output W 30 108
Fan Speed Low rpm Cooling; 1,260

Heating; 1,360

680

Medium rpm Cooling; 1,430

Heating; 1,430

—

High rpm Cooling; 1,530

Heating; 1,580

1,170

SuperHigh rpm Cooling; 1,580

Heating; 1,580

—

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 × 26
FPI 21 16
Size (W × H × L) mm 810 × 315 × 25.4 769.2

732.9

× 660.4 × 44.0

Refrigerant Control Device — Capillary Tube

Refrigeration Oil (cm3) — RB68A OR FRE0L ALPHA 68M
Refrigerant (R410A) g (oz) — 1,780 (62.8)
Thermostat Electronic Control Mechanical Control
Protection Device — Inner Protector
Capillary Tube Length mm — Cooling; 663, Heating; 550

Flow Rate l/min — Cooling; 13.0, Heating; 29.0
Inner Diameter mm — Cooling; 1.6, Heating; 2.4

Air Filter Material

Style

P.P.

Honeycomb

—

Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 45 µF, 370VAC
Fan Motor Capacitor µF, VAC — 3.0 µF, 450VAC

Note:

•

Specifications are subject to change without notice for further improvement.

9

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

4 Dimensions

10

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

11

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

5 Refrigeration Cycle Diagram

12

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

6 Block Diagram

13

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

7 Wiring Diagram

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

14

Cooling in operation according to Remote Control setting.

Time Delay Safety Control (3 minutes)

7 minutes Time Save Control

Anti-Freezing Control

•

If the temperature of the indoor heat exchanger falls
continuously below 2°C for 4 minutes or more, the
compressor turns off to protect the indoor heat exchanger
from freezing. The fan speed setting remains the same.

•

Compressor will restart again when the indoor heat
exchanger temperature rises to 10°C (Recovery).

3 minutes waiting of Time Delay Safety Control is valid for
Cooling Operation.

Compressor Reverse Rotation Protection Control

Anti-Dew Formation Control

8 Operation Details

8.1. Cooling Mode Operation

•

When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.

•

When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3 minutes.

•

The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is between the compressor
ON temperature and OFF temperature.

•

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 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid)

▲

T = Intake air temperature - Indoor heat exchanger temperature

This is to protect reverse rotation of the compressor when there is a instantaneous power failure.

•

Purpose is to prevent dew formation on indoor unit air discharge area.

•

When the following conditions occur for 30 minutes continuously, anti-dew formation is controlled by indoor fan speed shift to
low (Changed to Lo

+

):

−

Indoor intake air temperature is more than 24°C and less than 30°C.

−

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.

15

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Automatic Fan Speed Mode

Cooling Operation Time Diagram

When Automatic Fan Speed is selected at Remote Control during cooling operation.

•

Fan speed rotates in the range of Hi to Me.

•

Deodorizing Control.

16

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Time Delay Safety Control

Anti-Freezing Control

Compressor Reverse Rotation Protection Control

Anti-Dew Formation Control

Automatic Fan Speed Mode

8.2. Soft Dry Mode Operation

•

The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and
then Soft Dry operation will start.

•

During Soft Dry operation, the Indoor Fan will operate at SLo speed.

•

Once room temperature reaches below Soft Dry OFF temperature. Indoor Fan, Compressor and Outdoor Fan stop for 6
minutes.

•

Once the compressor stops, it will not start for 3 minutes during Cooling operation.

•

Same as Anti-Freezing Control for Cooling Mode operation. (For Soft Dry region, 6 minutes waiting is valid during compressor
stops.)

•

Same as Compressor Reverse Rotation Protection Control for Cooling Mode Operation. (For Soft Dry region, 6 minutes waiting
is valid during compressor stops.)

•

Same as Anti-Dew Formation Control for Cooling Mode operation.

When Automatic Fan Speed is selected at Remote Control during Soft Dry operation.

•

Fan speed off and on at SLo speed.

•

Deodorizing Control.

17

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Soft Dry Operation Time Diagram

18

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Time Delay Safety Control

Overload Protection Control

4-way Valve Control

Hot Start Control

8.3. Heating Mode Operation

•

Heating in operation according to Remote Control setting.

•

When the compressor is stopped by Power Switch, Remote Control or there is a power failure, it restarts after 3 minutes when
the Power Switch, Remote Control is turned ON or the power supply is resumed.

•

When the setting temperature is reached during heating operation, the compressor stops and it will not start for 4 minutes.

(a) 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 T

b

or 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).

(b) Compressor High Pressure Control

•

If the indoor heat exchan ger becomes 68°C or more, the compressor will stop and restart automatically.

(Time Delay Safety Control - 4 minutes waiting).

•

4-way valve ON during Heating operation, except deicing operation.

•

When the unit is switched to “OFF” during Heating operation, 4-way valve stays at Heating position for 5 minutes.

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 reaches 42°C.

Maximum Hot start duration = 4 minutes. After 4 minutes,

Hot start operation will be shifted to normal Heating operation.

19

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Automatic Fan Speed Mode

Anti Cold Draft Control

When Automatic Fan Speed is selected at Remote Control during heating operation.

•

Fan speed rotates in the range of Me→SLo according to the heat exchanger temperature.

20

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Heating Operation Time Diagram

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 or 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.

21

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

a) Normal Deicing Time Diagram

(b) Overload Deicing Time Diagram

22

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

8.4. Automatic Mode Operation

1. When the Automatic Mode Operation is selected, the indoor fan operates at SLo fan speed for 25 seconds to sense intake air
temperature and determine the 1st operation mode. If indoor intake air temperature is less than 16°C, Heating mode will
immediate operate.

2. Operation mode will be determine again 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°C Cooling (Judgement: Not Applicable (Judgement:

Heating 23°C & Above) Below 23°C)

O O

Soft Dry 23°C Soft Dry Not Applicable (Judgement: (Judgement:

Heating 23°C & Above) Below 23°C)

O O

Heating Cooling (Judgement: Not Applicable (Judgement:

23°C Heating Above 23°C) 23°C & below)

Automatic Set Temperature
Refer 3. as below.

3. Automatic Set Temperature

For each operation, set temperature will automatically set as shown below.

However it can be selected 2°C higher or 2°C lower from standard set temperature by pressing the “Room Temperature Setting
button”.

Operation Hi (Standard) Lo

(+2°C) (±0°C) (-2°C)

Cooling 27°C 25°C 23°C

Soft Dry 24°C 22°C 20°C

Heating 23°C 21°C 19°C

•

The mode judging temperature and standard setting temperature can be increased by 2°C, by open the circuit of JX1 at
indoor electronic controller.

23

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5

Cooling or Soft Dry Operation

Purpose is to obtain a comfortable room temperature while
sleeping. When you press the SLEEP Mode, the following
movement will start to avoid overcooling.

•

Sleep shift operation starts, when the room temperature
reaches the setting temperature or after 1 hour of operation.

•

The setting temperature will be risen by

0.5

°C at the start of

operation and by

0.5

°C one hour later .

•

The airflow volume will automatically change to Lo fan
speed.

•

Sleep Mode operation time is8hours, the operation will be
stop after8hour.

•

When used together with the Timer, the Timer has priority.

Heating Operation

Purpose is to obtain a comfortable room temperature while
sleeping. When you press the SLEEP Mode, the following
movement will start to avoid overheating.

•

Sleep shift operation starts, when the room temperature
reaches the setting temperature or after 1 hour of operation.

•

The setting temperature will be decrease by2°C at the start
of operation and by3°C one hour later.

•

The fan speed refer to Indoor Fan Motor Control.

•

Sleep Mode operation time is8hours, the operation will be
stop after8hour.

•

When used together with the Timer, the Timer has priority.

8.5. Sleep Mode Auto Operation

8.6. Random Auto Restart Control

•

If there is a power failure, operation will be automatically restarted after 3 to 4 minutes when the power is resumed.

It will start with previous operation mode and airflow direction.

•

Restart time is decided randomly using 4 parameter:-

Intake air temperature, setting temperature, fan speed and Air Swing Blade position.

•

Auto Restart Control is not available when Timer or Sleep Mode is set.

•

This control can be omitted by open the circuit of JX2. (Refer Circuit Diagram)

24

CS-W18CKP CU-W18CKP5 / CS-W24CKP CU-W24CKP5