Panasonic CS-W7DKE, CU-W7DKE, CU-W9DKE, CS-W12DKE, CU-W12DKE Service Manual
...
Order No. MAC0408028C2
Air Conditioner
CS-W7DKE CU-W7DKE
CS-W9DKE CU-W9DKE
CS-W12DKE CU-W12DKE
CONTENTS
Page Page
1 Features 3
2 Functions
2.1. Remote Control
2.2. Indoor Unit
2.3. Outdoor Unit
3 Product Specifications
3.1. CS-W7DKE CU-W7DKE
4
4
5
6
7
7
3.2. CS-W9DKE CU-W9DKE 9
3.3. CS-W12DKE CU-W12DKE
4 Dimensions
4.1. Indoor Unit & Remote Control
4.2. Outdoor Unit
5 Refrigeration Cycle Diagram
6 Block Diagram
© 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
11
13
13
14
15
16
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
7 Wiring Diagram 18
8 Operation Details
8.1. Heating Operation
8.2. Cooling Operation
8.3. Soft Dry Operation
8.4. Automatic Operation
8.5. Operation Control
8.6. Indoor Fan Speed Control
8.7. Outdoor Fan Speed Control
8.8. Vertical Airflow Direction Control
8.9. Horizontal Airflow Direction Control
8.10. Powerful Operation
8.11. Quiet Operation
8.12. Ionizer Operation
8.13. Timer Control
8.14. Random Auto Restart Control
8.15. Remote Control Signal Receiving Sound
9 Operating Instructions
10 Installation Instructions
10.1. Safety Precautions
10.2. Indoor Unit
10.3. Outdoor Unit
11 Installation And Servicing Air Conditioner Using R410A
11.1. Outline
11.2. Tools For Installing/Servicing Refrigerant Piping
11.3. Refrigerant Piping Work
11.4. Installation, Transferring, Servicing
12 Servicing Information
12.1. Distinction Of Lead Free (PbF) Printed Circuit Board
12.2. Indoor Electronic Controllers Removal Procedures
20
20
21
22
23
24
30
32
32
33
33
35
37
38
38
38
39
45
45
48
52
55
55
56
60
62
66
66
66
12.3. Indoor Fan Motor And Cross Flow Fan Removal
Procedures
12.4. Remote Control Reset
12.5. Auto OFF/ON Button
13 Troubleshooting Guide
13.1. Refrigeration Cycle System
13.2. Relationship Between The Condition Of The Air
Conditioner And Pressure And Electric Current
13.3. Diagnosis Methods Of A Malfunction Of A Compressor
And 4-way Valve
14 Technical Data
14.1. Thermostat Characteristics
14.2. Sensible Capacity Chart
14.3. Operation Characteristics
15 Exploded View (Indoor Unit)
15.1. CS-W7DKE CS-W9DKE CS-W12DKE
16 Replacement Parts List (Indoor Unit)
16.1. CS-W7DKE CS-W9DKE CS-W12DKE
17 Exploded View (Outdoor Unit)
17.1. CU-W7DKE CU-W9DKE
17.2. CU-W12DKE
18 Replacement Parts List (Outdoor Unit)
18.1. CU-W7DKE CU-W9DKE
18.2. CU-W12DKE
19 Electronic Circuit Diagram
19.1. Indoor Unit & Outdoor Unit
19.2. Remote Control
19.3. Print Pattern Indoor Unit Printed Circuit Board
19.4. Print Pattern Indicator & Receiver Printed Circuit Board
67
68
69
70
70
71
71
72
72
73
74
77
77
78
78
79
79
80
81
81
82
83
83
89
90
92
2
1 Features
High efficiency.
•
Compact design.
•
Wider range of horizontal discharge air.
•
Air Filter with function to reduce dust and smoke.
•
Long installation piping up to 15 meter (CS/CU-W12DKE),
•
10 meter (CS/CU-W7DKE & CS/CU-W9DKE).
Supersonic Air Purifying System with Super Alleru-Buster.
•
Inactive various harmful airbone elements includin g
−
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.
−
OLP to protect Compressor.
−
Noise prevention during soft dry operation.
−
Blue 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.
−
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
Operation Improvement
•
Quiet mode to provide quiet operation.
−
Powerful mode to reach the desired room temperature
−
quickly.
Ionizer control for generating negative ion in discharge
−
air.
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.
3
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
2 Functions
2.1. Remote Control
OFF / ON I
MODE
FAN SPEED
AIR SWING
POWERFUL
AUTO
HEAT
COOL
DRY
MODE
POWERFUL
QUIET
TIMER
OFF
Operation Start / Stop
Operation Mode Selection
•
•
•
•
AUTO
HEAT
COOL
DRY
Automatic Operation
Heating Operation
Cooling Operation
Soft Dry Operation
Indoor Fan Speed Selection
• Low Fan Speed
•
•
•
AUTO
Medium Fan Speed
High Fan Speed
Automatic Fan Speed
Vertical Airflow Direction Control
•
AUTO
Automatic Vertical Airflow
Control.
• Manual Vertical Airflow
Control (5 stages of
adjustment).
Powerful Operation Start / Stop
FAN
SPEED
AIR
SWING
OFF
TIMERONTIMER
OFF/ON
FAN SPEED
TEMP
AIR SWING
ON
123
SET
CANCEL
CANCEL
CLOCK RESET
TEMP.
ON-TIMER
OFF-TIMER
▲
▼
SET
CANCEL
CLOCK
Room Temperature Setting
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.
Timer Operation Selection
• 24-hour, OFF / ON Real Timer Setting.
Time / Timer Setting
• Hours and minutes setting.
Timer Operation Set / Cancel
• ON Timer and OFF Timer setting and
cancellation.
Clock Setting
• Current time setting.
QUIET
Quiet Operation Start / Stop
Ionizer Operation Start / Stop
4
2.2. Indoor Unit
AUTO
OFF / ON
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).
Operation Indication Lamps (LED)
• POWER
• TIMER
• QUIET
• POWERFUL
• ION
• SUPER
(Green) ............. Lights up in operation,
(Orange) ............ Lights up in Timer
(Orange) ............. Lights up in Quiet
(Orange) ...... Lights up in Powerful
(Green) .................. Lights up in Ionizer
ALLERU-BUSTER
Operation Mode
• Heating, Cooling, Soft Dry and Automatic
Operation.
Powerful Operation
• Reaches the desired room temperature quickly.
blinks in Automatic
Operation judging and
Hot Start operation.
Setting.
Operation.
Operation.
Operation.
(Blue) ... Lights up in operation.
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
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.
Airflow Direction Control
• Vertical airflow control can be adjusted
automatically or manually by remote control.
• Horizontal airflow can be manually adjusted by
hand.
Anti-Freezing Control
• To prevent indoor heat exchanger from freezing.
Starting Current Control
• To reduce the starting current.
Time Delay Safety Control
• Restarting is inhibited for appro. 3 minutes.
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.
30 Minutes Time Save Control
• Heating operation only.
Timer Operation
• Delay OFF/ON Timer control.
Quiet Operation
• To provide quiet operation.
Ionizer Operation
• Generate and discharge negative ion.
Hot-Start Control
• To prevent cold air being discharge during
Heating operation starts.
Anti Cold Draft Control
• To prevent the cold draft during Heating mode
operation in thermo off condition.
5
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
2.3. Outdoor Unit
Compressor Reverse Rotation
Protection Control
• To protect compressor from reverse
rotation when there is a instantaneous
power failure.
Overload Protector
• OLP to protect the compressor. Overload
Protector will trip when
– Temperature of compressor increases
to 120°C.
– High temperature or high current flows
to compressor.
(Refer circuit diagram for OLP
characteristic)
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.
Deice Control
• To prevent frosting at outdoor heat
exchanger. (Only for Heating Operation)
•
Temperature of outdoor heat exchanger
is sensed by TRS (Thermal Reed Switch).
TRS OFF temperature 4°C.
TRS ON temperature -3°C.
Overload Protection Control
• Outdoor fan stops when indoor heat
exchanger temperature rises to 51°C
and above, and restarts when the indoor
heat exchanger temperature drops to
49°C and below.
• Compressor stop when indoor heat
exchanger temperature reaches 65°C or
above. (Heating Operation Only)
Compressor Protection Control
• If the outdoor fan motor is not running
after compressor starts for 50 secs.,
compressor will stop. (Cooling and Soft
Dry Operation only).
Outdoor Fan Operation Control
• Temperature Fuse.
4-Way Valve Control
• When the unit is switched to “OFF”
during Heating Operation, 4-way valve
stays at Heating position for 5 minutes.
6
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
3 Product Specifications
3.1. CS-W7DKE CU-W7DKE
Unit CS-W7DKE CU-W7DKE
Cooling Capacity kW (kcal/h) 2.30 (1,980)
BTU/h 7,840
Heating Capacity kW (kcal/h) 2.45 (2,110)
BTU/h 8,350
Moisture Removal l/h (Pint/h) 1.5 (3.2)
Phase ø Single
Power Source Voltage V 230
Cycle Hz 50
Airflow Method OUTLET
INTAKE
Air Volume Lo m3/min (cfm) Cooling; 5.8 (203) —
Me m3/min (cfm) Cooling; 6.9 (245) —
Hi m3/min (cfm) Cooling; 7.9 (280) Cooling; 26.0 (920)
SHi m3/min (cfm) Cooling; 9.0 (318) —
SIDE VIEW TOP VIEW
Heating; 6.3 (220)
Heating; 7.0 (250)
Heating; 9.1 (320)
Heating; 9.0 (318)
Noise Level dB (A) Cooling; High 34, Low 26 Cooling; High 46
Heating; High 36, Low 26 Heating; High 48
Power level dB Cooling; High 47 Cooling; High 61
Heating; High 49 Heating; High 63
Electrical Data Input W Cooling; 710
Heating; 675
Running Current A Cooling; 3.2
Heating; 3.0
EER W/W (BTU/hW) Cooling; 3.24 (11.0)
COP W/W (BTU/hW) Heating; 3.63 (12.4)
Starting Current A 12.0
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Inner diameter mm 12 —
Length mm 650 —
inch
inch
inch
inch
G ; Half Union 3/8”
L ; Half Union 1/4”
G ; (gas side) 3/8”
L ; (liquid side) 1/4”
G ; 3-way valve 3/8”
L ; 2-way valve 1/4”
G ; (gas side) 3/8”
L ; (liquid side) 1/4”
7
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
Unit CS-W7DKE CU-W7DKE
Power Cord Length
Number of core-wire
m 1.9
3 (1.5 mm
2
)
—
—
Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510)
Width inch (mm) 31 - 15/32 (799) 25 - 19/32 (650)
Depth inch (mm) 7 - 7/32 (183) 9 - 1/16 (230)
Net Weight lb (kg) 20 (9.0) 57 (26)
Compressor Description — Rotary (1 cylinder)
rolling piston type
Motor Type — Induction (2-poles)
Rated Output W — 600
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASG20k1 PP Resin
Motor Type Induction (4-poles) Induction (6-poles)
Input W 47 68
Rated Output W 15 30
Fan Speed Low rpm Cooling; 780 —
Heating; 840
Medium rpm Cooling; 940 —
Heating; 940
High rpm Cooling; 1,070 815
Heating; 1,220
SuperHigh rpm Cooling; 1,220 —
Heating; 1,220
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugate Fin
Row / Stage (Plate fin configuration, forced draft)
2×15 2×23
FPI 21 17
Size (W × H × L) mm 610 × 315 × 25.4 597.7
× 483 × 36.4
585.7
Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — FV50S (300)
Refrigerant (R-410A) g (oz) — 910 (32.1)
Thermostat Electronic Control —
Protection Device — Overload Protector
Capillary Tube Length mm — Cooling; 955, Heating; 415
Flow Rate l/min — Cooling; 6.5, Heating; 9.6
Inner Diameter mm — Cooling; 1.3, Heating; 1.3
Air Filter Material
Style
P.P.
Honeycomb
—
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 20 µF, 400VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC
•
Specifications are subject to change without notice for further improvement.
8
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
3.2. CS-W9DKE CU-W9DKE
Unit CS-W9DKE CU-W9DKE
Cooling Capacity kW (kcal/h) 2.75 (2,370)
BTU/h 9,380
Heating Capacity kW (kcal/h) 3.05 (2,620)
BTU/h 10,400
Moisture Removal l/h (Pint/h) 1.6 (3.4)
Phase ø Single
Power Source Voltage V 230
Cycle Hz 50
Airflow Method OUTLET
INTAKE
Air Volume Lo m3/min (cfm) Cooling; 5.8 (204) —
Me m3/min (cfm) Cooling; 7.3 (257) —
Hi m3/min (cfm) Cooling; 8.6 (300) Cooling; 26.0 (920)
SHi m3/min (cfm) Cooling; 9.7 (343) —
SIDE VIEW TOP VIEW
Heating; 6.2 (220)
Heating; 7.3 (257)
Heating; 9.7 (340)
Heating; 9.7 (343)
dB (A) Cooling; High 36, Low 26 Cooling; High 48
Heating; High 39, Low 26 Heating; High 49
Noise Level
Power level (dB) Cooling; High 49 Cooling; High 63
Heating; High 52 Heating; High 64
Electrical Data Input W Cooling; 855
Heating; 845
Running Current A Cooling; 3.8
Heating; 3.8
EER W/W (BTU/hW) Cooling; 3.22 (11.0)
COP W/W (BTU/hW) Heating; 3.61 (12.3)
Starting Current A 17.2
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Number of core-wire
Inner diameter mm 12 —
Length mm 650 —
inch
inch
inch
inch
m 1.9
G ; Half Union 3/8”
L ; Half Union 1/4”
G ; (gas side) 3/8”
L ; (liquid side) 1/4”
3 (1.5 mm
2
)
G ; 3-way valve 3/8”
L ; 2-way valve 1/4”
G ; (gas side) 3/8”
L ; (liquid side) 1/4”
—
—
9
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
Unit CS-W9DKE CU-W9DKE
Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510)
Width inch (mm) 31 - 15/32 (799) 25 - 19/32 (650)
Depth inch (mm) 7 - 7/32 (183) 9 - 1/16 (230)
Net Weight lb (kg) 20 (9.0) 64 (29)
Compressor Description — Rotary (1 cylinder)
Motor Type — Induction (2-poles)
Rated Output W — 700
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASG20k1 PP Resin
Motor Type Induction (4-poles) Induction (6-poles)
Input W 47 68
Rated Output W 15 30
Fan Speed Low rpm Cooling; 780 —
Heating; 840
Medium rpm Cooling; 980 —
Heating; 980
High rpm Cooling; 1,160 815
Heating; 1,310
SuperHigh rpm Cooling; 1,310 —
Heating; 1,310
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugate Fin
Row / Stage (Plate fin configuration, forced draft)
2 × 15 2 × 23
FPI 21 17
Size (W × H × L) mm 610 × 315 × 25.4 597.7
Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — FV50S (350)
Refrigerant (R-410A) g (oz) — 950 (33.5)
Thermostat Electronic Control —
Protection Device — Overload Protector
Capillary Tube Length mm — Cooling; 475, Heating; 330
Flow Rate l/min — Cooling; 7.2, Heating; 10.7
Inner Diameter mm — Cooling; 1.2, Heating; 1.3
Air Filter Material
Style
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 30 µF, 370VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC
P.P.
Honeycomb
rolling piston type
× 483 × 36.4
585.7
—
•
Specifications are subject to change without notice for further improvement.
10
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
3.3. CS-W12DKE CU-W12DKE
Unit CS-W12DKE CU-W12DKE
Cooling Capacity kW (kcal/h) 3.60 (3,100)
BTU/h 12,300
Heating Capacity kW (kcal/h) 3.90 (3,350)
BTU/h 13,300
Moisture Removal l/h (Pint/h) 2.1 (4.4)
Phase ø Single
Power Source Voltage V 230
Cycle Hz 50
Airflow Method OUTLET
INTAKE
Air Volume Lo m3/min (cfm) Cooling; 6.7 (236) —
Me m3/min (cfm) Cooling; 8.3 (294) —
Hi m3/min (cfm) Cooling; 9.5 (340) Cooling; 33.0 (1,160)
SHi m3/min (cfm) Cooling; 9.7 (343) —
SIDE VIEW TOP VIEW
Heating; 7.1 (251)
Heating; 8.3 (294)
Heating; 9.7 (340)
Heating; 9.7 (343)
dB (A) Cooling; High 39, Low 29 Cooling; High 49
Heating; High 40, Low 29 Heating; High 49
Noise Level
Power level (dB) Cooling; High 52 Cooling; High 64
Heating; High 53 Heating; High 65
Electrical Data Input kW Cooling; 1.12
Heating; 1.08
Running Current A Cooling; 5.1
Heating; 4.9
EER W/W (BTU/hW) Cooling; 3.21 (11.0)
COP W/W (BTU//hW) Heating; 3.61 (12.3)
Starting Current A 22.0
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Number of core-wire
Inner diameter mm 12 —
Length mm 650 —
inch
inch
inch
inch
m 1.9
G ; Half Union 1/2”
L ; Half Union 1/4”
G ; (gas side) 1/2”
L ; (liquid side) 1/4”
3 (1.5 mm
2
)
G ; 3-way valve 1/2”
L ; 2-way valve 1/4”
G ; (gas side) 1/2”
L ; (liquid side) 1/4”
—
—
11
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
Unit CS-W12DKE CU-W12DKE
Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540)
Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780)
Depth inch (mm) 7- 7/32 (183) 11 - 3/8 (289)
Net Weight lb (kg) 20 (9.0) 77 (35)
Compressor Description — Rotary (1 cylinder)
Motor Type — Induction (2-poles)
Rated Output W — 900
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASG20k1 PP Resin
Motor Type Induction (4-poles) Induction (6-poles)
Input W 47 73
Rated Output W 15 33
Fan Speed Low rpm Cooling; 900 —
Heating; 960
Medium rpm Cooling; 1,120 —
Heating; 1,120
High rpm Cooling; 1,280 845
Heating; 1,310
SuperHigh rpm Cooling; 1,310 —
Heating; 1,310
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugate Fin
Row / Stage (Plate fin configuration, forced draft)
2 × 15 2 × 24
FPI 21 17
Size (W × H × L) mm 610 × 315 × 25.4 705.8
Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — FV50S (350)
Refrigerant (R-410A) g (oz) — 1,090 (38.5)
Thermostat Electronic Control —
Protection Device — Overload Protector
Capillary Tube Length mm — Cooling; 1,175, Heating; 525
Flow Rate l/min — Cooling; 4.7 Heating; 8.6
Inner Diameter mm — Cooling; 1.2, Heating; 1.3
Air Filter Material
Style
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 25 µF, 370VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC
P.P.
Honeycomb
rolling piston type
× 504 × 36.38
735.1
—
•
Specifications are subject to change without notice for further improvement.
12
4 Dimensions
4.1. Indoor Unit & Remote Control
4.1.1. CS-W7DKE CS-W9DKE CS-W12DKE
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
13
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
4.2. Outdoor Unit
4.2.1. CU-W7DKE CU-W9DKE
4.2.2. CU-W12DKE
14
5 Refrigeration Cycle Diagram
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
15
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
6 Block Diagram
16
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
17
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
7 Wiring Diagram
18
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
19
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
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
20
CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
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
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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.
8.3.1. Soft Dry Operation Time Diagram
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CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
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°C Cooling (Judgement: Not Applicable (Judgement:
Heating 23°C & Above) Below 23°C)
O O
Soft Dry 20°C Soft Dry Not Applicable (Judgement: (Judgement:
Heating 20°C & Above) Below 20°C)
O O
Heating Cooling (Judgement: Not Applicable (Judgement:
25°C Heating 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°C 25°C 23°C
Soft Dry 24°C 22°C 20°C
Heating 23°C 21°C 19°C
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CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
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.
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.
•
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CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
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.
•
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 (cooling mode) 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.
•
When room temperature is constant (±1°C) 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 (CLo, Lo- or QLo).
−
This control is cancelled immediately when above condition is changed, or Powerful button is pressed.
•
Anti-Dew formation is control by:
•
1. CLo fan is changed to HLo fan.
2. QLo fan is changed to HLo fan.
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CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
(For 8.5.8 to 8.5.16 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 (heating mode) 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. 30 Minutes Time Save Control
The compressor will start automatically if it has stopped for 30 minutes and the intake air temperature falls between the
•
compressor OFF temperature (A) and compressor ON temperature (B) during the period.
This is to maintain the room temperature as set. Despite of this, it is to prevent a wrong judgement of intake air temperature due
•
to poor installation near the sensor area.
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8.5.11. Overload Protection Control
Outdoor Fan Control
If the temperature of the indoor heat exchanger rises to 51°C, outdoor fan stops. The outdoor fan restarts when the indoor
•
heat exchanger temperature falls to 49°C.
Compressor high pressure protection
If the indoor heat exchanger becomes 65°C or more, the compressor will stop and restart automatically.
•
(Time Delay Safety Control - 4 minutes waiting).
This is to reduce the pressure, as to reduce the indoor heat exchanger temp. Nevertheless, is to protect the compressor
•
from overload of too high temperature.
8.5.12. 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.
•
8.5.13. Outdoor Fan Motor Control
When compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds (forced operation).
•
This is to release the heat and to obtain the lowest pressure as fast as possible.
•
8.5.14. 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 39°C or operation over 4 minutes.
•
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CS-W7DKE CU-W7DKE / CS-W9DKE CU-W9DKE / CS-W12DKE CU-W12DKE
8.5.15. Anti Cold Draft Control
This operation is to prevent the Cold Draft during Heating mode operation.
•
The operation will start when compressor OFF (Thermo OFF) during Heating operation.
•
For the first 30 sec. from compressor OFF (Thermo OFF), Indoor fan speed will operate accordingly to the Indoor heat
•
exchanger temperature as shown below:
After 30 sec. from compressor OFF (thermo OFF), Indoor fan will run at SSLo speed only.
•
Anti Cold Draft Control will stop when:
•
Intake temperature < set temperature. (Time Delay Safety Control 4 minutes waiting is valid)
−
30 Minutes Time Save Control activates.
−
8.5.16. Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
Normal Deicing
•
Deice operations detection commences after 30 minutes of Heating operation starts or 60 minutes after previous deice
operation. If the TRS (Thermal Reed Switch) senses the outdoor piping temperature drops to -3°C (TRS CLOSE) or less 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
•
1. 12 minutes after deicing operation starts;
2. TRS senses the outdoor piping temperature rises to 4°C (TRS OPEN).
Deicing will not end immediately as time delay (Td) is valid as shown below.
Once deicing operation starts, it will not end for 60 seconds.
•
After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.
•
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