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CS-V7DKE
Operating Instructions Manual
8 pgs3.9 Mb0
Service Manual
80 pgs7.51 Mb0

Panasonic CS-V7DKE, CU-V9DKE, CU-V12DKE, CU-V7DKE, CS-V12DKE Service Manual

...
Order No. MAC0412062C2
Air Conditioner
CS-V7DKE CU-V7DKE CS-V9DKE CU-V9DKE CS-V12DKE CU-V12DKE
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-V7DKE CU-V7DKE
4
4
5
6
7
7
3.2. CS-V9DKE CU-V9DKE 9
3.3. CS-V12DKE CU-V12DKE
4 Dimensions
4.1. Indoor Unit & Remote Control
4.2. Outdoor Unit
5 Refrigeration Cycle Diagram
6 Block Diagram
11
13
13
14
15
16
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
7 Wiring Diagram 17
8 Operation Details
8.1. Cooling Operation
8.2. Soft Dry Operation
8.3. Automatic Operation
8.4. Operation Control
8.5. Indoor Fan Speed Control
8.6. Outdoor Fan Speed Control
8.7. Vertical Airflow Direction Control
8.8. Horizontal Airflow Direction Control
8.9. Powerful Operation
8.10. Quiet Operation
8.11. Ionizer Operation
8.12. Timer Control
8.13. Random Auto Restart Control
8.14. 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
18
18
19
20
20
22
24
24
25
25
25
27
28
28
28
29
35
35
38
42
45
45
46
50
52
56
56
56
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
14 Technical Data
14.1. Thermostat Characteristics
14.2. Sensible Capacity Chart
14.3. Operation Characteristics
15 Exploded View (Indoor Unit)
15.1. CS-V7DKE CS-V9DKE CS-V12DKE
16 Replacement Parts List (Indoor Unit)
16.1. CS-V7DKE CS-V9DKE CS-V12DKE
17 Exploded View (Outdoor Unit)
17.1. CU-V7DKE
17.2. CU-V9DKE CU-V12DKE
18 Replacement Parts List (Outdoor Unit)
18.1. CU-V7DKE
18.2. CU-V9DKE CU-V12DKE
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
57
58
59
60
60
61
61
62
62
62
63
65
65
66
66
67
67
68
69
69
70
71
71
77
78
80
2
1 Features
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
• High efficien cy.
• 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-V12DKE),
10 meter (CS/CU-V7DKE & CS/CU-V9DKE).
• 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.
− 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).
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-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
2 Functions
2.1. Remote Control
OFF / ON I
MODE
Operation Start / Stop
Operation Mode Selection
AUTO
COOL
DRY
OFF
TIMERONTIMER
OFF/ON
MODE
POWERFUL
QUIET
TIMER
ON
123
OFF
FAN SPEED
TEMP
AIR SWING
CANCEL
CANCEL
CLOCK RESET
FAN SPEED
AIR SWING
SET
TEMP.
Room Temperature Setting
Cooling, Soft Dry Operation.
• Increase or decrease set temperature (16°C to 30°C)
FAN SPEED
AIR SWING
POWERFUL
• AUTO Automatic Operation
COOL Cooling Operation
•
• DRY Soft Dry Operation
Indoor Fan Speed Selection
• Low Fan Speed
•
•
AUTO Automatic Fan Speed
•
Medium Fan Speed High Fan Speed
Vertical Airflow Direction Control
• AUTO Automatic Vertical Airflow Control.
• Manual Vertical Airflow Control (5 stages of adjustment).
Powerful Operation Start / Stop
ON-TIMER OFF-TIMER
▲ ▼
SET CANCEL
CLOCK
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
(Green) ............. Lights up in operation,
•
TIMER
(Orange) ............ Lights up in Timer
•
QUIET
(Orange) ............. Lights up in Quiet
•
POWERFUL
•
ION
•
SUPER ALLERU-BUSTER
(Orange) ...... Lights up in Powerful
(Green) .................. Lights up in Ionizer
Operation Mode
• Cooling, Soft Dry and Automatic Operation.
Powerful Operation
• Reaches the desired room temperature quickly.
Timer Operation
• Delay OFF/ON Timer control.
blinks in Automatic Operation judging.
Setting.
Operation.
Operation.
Operation.
(Blue) ... Lights up in operation.
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
Ionizer Operation
• Generate and discharge negative ion.
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.
Quiet Operation
• To provide quiet operation.
Anti-Dew Formation Control
• Anti-Dew Formation Control for indoor unit discharge area.
5
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
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.
Outdoor Fan Operation Control
• Temperature Fuse.
6
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
3 Product Specifications
3.1. CS-V7DKE CU-V7DKE
Unit CS-V7DKE CU-V7DKE
Cooling Capacity kW (kcal/h) 2.40 (2,060)
BTU/h 8,180
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 (200) —
Me m3/min (cfm) Cooling; 6.7 (240) —
Hi m3/min (cfm) Cooling; 7.8 (280) Cooling; 26.0 (920)
SHi m3/min (cfm) Cooling; 8.5 (300) —
Noise Level dB (A) Cooling; High 33, Low 26 Cooling; High 46
Power level dB Cooling; High 46 Cooling; High 61
SIDE VIEW TOP VIEW
Electrical Data Input W Cooling; 740
Running Current A Cooling; 3.4
EER W/W (BTU/hW) Cooling; 3.24 (11.1) Starting Current A 12.0
Piping Connection Port (Flare piping)
Pipe Size (Flare piping)
Drain Hose
Power Cord Length Number of core-wire
Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510)
Net Weight lb (kg) 20 (9.0) 55 (25) Compressor Description — Rotary (1 cylinder)
Inner diameter mm 12 — Length mm 650 —
Width inch (mm) 31 - 15/32 (799) 25 - 19/32 (650) Depth inch (mm) 7 - 7/32 (183) 9 - 1/16 (230)
Motor Type — Induction (2-poles) Rated Output W — 600
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
G ; 3-way valve 3/8”
L ; 2-way valve 1/4”
G ; (gas side) 3/8”
L ; (liquid side) 1/4”
2
)
— —
rolling piston type
7
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
Unit CS-V7DKE CU-V7DKE
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASG20k1 PP Resin Motor Type Induction (4-poles) Induction (6-poles)
Input W 47 63 Rated Output W 15 30 Fan Speed Low rpm Cooling; 780 —
Medium rpm Cooling; 900 —
High rpm Cooling; 1,050 795
SuperHigh rpm Cooling; 1,140 —
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 2×20 FPI 21 17 Size (W × H × L) mm 610 × 315 × 25.4 594.7
Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — FV50S (300) Refrigerant (R-410A) g (oz) — 890 (31.4) Thermostat Electronic Control — Protection Device — Overload Protector Capillary Tube Length mm — Cooling; 570
Flow Rate l/min — Cooling; 6.5 Inner Diameter mm — Cooling; 1.2
Air Filter Material
Style
Capacity Control Capillary Tube Compressor Capacitor µF, VAC — 20 µF, 400VAC Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC
P.P.
Honeycomb
× 483 × 25.4
574.7
—
•
Specifications are subject to change without notice for further improvement.
8
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
3.2. CS-V9DKE CU-V9DKE
Unit CS-V9DKE CU-V9DKE
Cooling Capacity kW (kcal/h) 3.00 (2,580)
BTU/h 10,230
Moisture Removal l/h (Pint/h) 1.7 (3.6)
Phase ø Single
Power Source Voltage V 230
Cycle Hz 50
Airflow Method OUTLET
INTAKE
Air Volume Lo m3/min (cfm) Cooling; 5.7 (200) —
Me m3/min (cfm) Cooling; 7.2 (250) —
Hi m3/min (cfm) Cooling; 8.5 (300) Cooling; 33.0 (1,160)
SHi m3/min (cfm) Cooling; 9.6 (340) —
Noise Level dB (A) Cooling; High 35, Low 26 Cooling; High 48
Power level (dB) Cooling; High 48 Cooling; High 63
SIDE VIEW TOP VIEW
Electrical Data Input W Cooling; 935
Running Current A Cooling; 4.2
EER W/W (BTU/hW) Cooling; 3.21 (10.9) Starting Current A 20.3
Piping Connection Port (Flare piping)
Pipe Size (Flare piping)
Drain Hose
Power Cord Length Number of core-wire
Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540)
Net Weight lb (kg) 20 (9.0) 68 (31) Compressor Description — Rotary (1 cylinder)
Inner diameter mm 12 — Length mm 650 —
Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780) Depth inch (mm) 7 - 7/32 (183) 11 - 3/8 (289)
Motor Type — Induction (2-poles) Rated Output W — 750
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
G ; 3-way valve 3/8”
L ; 2-way valve 1/4”
G ; (gas side) 3/8”
L ; (liquid side) 1/4”
2
)
— —
rolling piston type
9
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
Unit CS-V9DKE CU-V9DKE
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASG20k1 PP Resin Motor Type Induction (4-poles) Induction (6-poles)
Input W 47 69 Rated Output W 15 30 Fan Speed Low rpm Cooling; 780 —
Medium rpm Cooling; 980 —
High rpm Cooling; 1,160 830
SuperHigh rpm Cooling; 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 1 × 20 FPI 21 17 Size (W × H × L) mm 610 × 315 × 25.4 835.1 × 508 × 22
Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — FV50S (350) Refrigerant (R-410A) g (oz) — 930 (32.8) Thermostat Electronic Control — Protection Device — Overload Protector Capillary Tube Length mm — Cooling; 675
Flow Rate l/min — Cooling; 9.0 Inner Diameter mm — Cooling; 1.4
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
—
•
Specifications are subject to change without notice for further improvement.
10
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
3.3. CS-V12DKE CU-V12DKE
Unit CS-V12DKE CU-V12DKE
Cooling Capacity kW (kcal/h) 3.68 (3,160)
BTU/h 12,550
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; 6.5 (230) —
Me m3/min (cfm) Cooling; 8.0 (280) —
Hi m3/min (cfm) Cooling; 9.5 (340) Cooling; 30.8 (1,090)
SHi m3/min (cfm) Cooling; 9.7 (343) —
Noise Level dB (A) Cooling; High 39, Low 29 Cooling; High 49
Power level (dB) Cooling; High 52 Cooling; High 64
SIDE VIEW TOP VIEW
Electrical Data Input kW Cooling; 1.14
Running Current A Cooling; 5.3
EER W/W (BTU/hW) Cooling; 3.23 (11.0) Starting Current A 22.0
Piping Connection Port (Flare piping)
Pipe Size (Flare piping)
Drain Hose
Power Cord Length Number of core-wire
Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540)
Net Weight lb (kg) 20 (9.0) 73 (33) Compressor Description — Rotary (1 cylinder)
Inner diameter mm 12 — Length mm 650 —
Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780) Depth inch (mm) 7 - 7/32 (183) 11 - 3/8 (289)
Motor Type — Induction (2-poles) Rated Output W — 900
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
G ; 3-way valve 1/2”
L ; 2-way valve 1/4”
G ; (gas side) 1/2”
L ; (liquid side) 1/4”
2
)
— —
rolling piston type
11
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
Unit CS-V12DKE CU-V12DKE
Air Circulation Description Cross-flow Fan Propeller Fan
Material ASG20k1 PP Resin Motor Type Induction (4-poles) Induction (6-poles)
Input W 47 74 Rated Output W 15 35 Fan Speed Low rpm Cooling; 870 —
Medium rpm Cooling; 1,080 —
High rpm Cooling; 1,280 840
SuperHigh rpm Cooling; 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 × 25.4 707.5
Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — FV50S (350) Refrigerant (R-410A) g (oz) — 1,050 (37.1) Thermostat Electronic Control — Protection Device — Overload Protector Capillary Tube Length mm — Cooling; 1,276
Flow Rate l/min — Cooling; 11.3 Inner Diameter mm — Cooling; 1.7
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
727.5
× 504 × 25.4
—
•
Specifications are subject to change without notice for further improvement.
12
4 Dimensions
4.1. Indoor Unit & Remote Control
4.1.1. CS-V7DKE CS-V9DKE CS-V12DKE
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
13
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
4.2. Outdoor Unit
4.2.1. CU-V7DKE
4.2.2. CU-V9DKE CU-V12DKE
14
5 Refrigeration Cycle Diagram
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
15
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
6 Block Diagram
16
7 Wiring Diagram
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
17
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
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
18
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
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.
8.2.1. Soft Dry Operation Time Diagram
19
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
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 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.
• 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
• 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.
8.4. Operation Control
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. 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.
20
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
8.4.3. 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.
8.4.4. 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.
8.4.5. 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.
8.4.6. 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.
21
CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
8.4.7. 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.
8.5. Indoor Fan Speed Control
• Indoor Fan Speed can be set using remote control.
8.5.1. Fan Speed Rotation Chart
Fan Speed (rpm) CS-V7DKE CS-V9DKE CS-V12DKE
SHi 1140 1250 1310
Hi 1050 1140 1280
Me 900 940 1080 HLo 850 840 960 CLo 780 750 870
Lo- 750 750 850
SLo 710 710 820
SS Lo - - -
QSHi - - -
QHi 950 1040 1180
QMe 800 840 980
QHLo - - -
QLo 680 650 770
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CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
8.5.2. Automatic Fan Speed Control
• When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table.
− Fan speed rotates in the range of Hi, Me and Lo-.
− Deodorizing Control will be activated.
− Auto Fan Speed during cooling operation:
1. Indoor fan will rotate alternately between off and on as shown in below diagram.
2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
3. For the first time the compressor operate, indoor fan will be switched to Hi fan speed from Lo- after 70 seconds from the start of compressor. This cause the room temperature to achieve the setting temperature quickly.
4. During compressor stop, indoor fan will operate at Lo- for the beginning 20 seconds to prevent higher volume of refrigerant in liquid form returning to the compressor.
5. After the compressor at turn off condition for 3 minutes, indoor fan will start to operate at Lo- to circulate the air in the room. This is to obtain the actual reading of the intake air temperature.
6. When the compressor resume operation, indoor fan will operate at Me fan speed (after 70 seconds from the restart of compressor) to provide comfort and lesser noise environment.
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CS-V7DKE CU-V7DKE / CS-V9DKE CU-V9DKE / CS-V12DKE CU-V12DK E
• Auto Fan Speed during Soft Dry operation:
1. Indoor fan will rotate alternately between off and Lo-.
2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
3. When compressor at turn off condition for 6 minutes, indoor fan will start fan speed at Lo- to circulate the air in the room. This is to obtain the actual reading of intake air temperature.
8.5.3. Manual Fan Speed Control
• Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.
• There are 3 types of fan speed settings: Lo, Me, Hi.
8.6. Outdoor Fan Speed Control
• There is only one speed for outdoor fan motor.
• When the air conditioner is turned on, the compressor and the outdoor fan will operate simultaneously .
• Likewise, both compressor and outdoor fan will stop at the same time if the unit is turned off.
8.7. Vertical Airflow Direction Control
8.7.1. Auto Control
• When the vertical airflow direction is set to Auto using the remote control, the louver swings up and down as shown in the diagram.
• When stop operation using the remote control, the discharge vent is reset, and stop at the closing position.
• During Cooling operation or Soft Dry operation, indoor fan motor may stop to rotate at certain periods. At that condition, the louver will stop swinging and rest at the upper limit.
• During Anti-dew condensation prevention, Airflow Direction Auto-control angle change from 0°-32° to 20°-30° under Cooling and Soft Dry operation mode.
Cooling and Soft Dry Operation
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