Panasonic CS-MC12DKV User manual

1 Features 2
2 Functions 3
3 Product Specifications 6
3.1. CS-MC12DKV CU-2C24DKV 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
8.1. Cooling Operation 13
8.2. Soft Dry Operation 14
8.3. Automatic Operation 15
8.4. Operation Control 16
8.5. Indoor Fan Speed Control 19
8.6. Outdoor Fan Speed Control 21
8.7. Vertical Airflow Direction Control 21
8.8. Horizontal Airflow Direction Control 22
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-MC12DKV CU-2C24DKV
8.9. Powerful Operation 22
8.10. Quiet Operation 23
8.11. Ionizer Operation 24
8.12. Timer Control 25
8.13. Random Auto Restart Control 25
8.14. Remote Control Signal Receiving Sound 25
9 Operating Instructions 26
10 Installation Instructions 32
10.1. Safety Precautions 32
10.2. Attached accessories 34
10.3. Select the best location 34
10.4. Indoor/Outdoor Unit Installation Diagram 34
10.5. Indoor unit 35
10.6. Outdoor unit 39
11 3-way Valve 43
11.1. Air purging 44
11.2. Pumping down 45
11.3. Evacuation 48
11.4. Gas charging 49
Air Conditioner
CONTENTS
Page Page
Order No. MAC0503054C3

12 Servicing Information 50
12.1. Distinction of Lead Free (PbF) Printed Circuit Board 50
12.2. Indoor Electronic Controllers Removal Procedures 50
12.3. Indoor Fan Motor and Cross Flow Fan Removal
Procedures 51
12.4. Auto OFF/ON Button 52
12.5. Remote Control Reset 53
13 Troubleshooting Guide 54
13.1. Refrigeration cycle system 54
13.2. Relationship between the condition of the air conditioner
and pressure and electric current 55
13.3. Diagnosis methods of a malfunction of a compressor 55
• 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
− Long piping up to 15 meter
14 Technical Data 56
14.1. Thermostat characteristics 56
14.2. Cooling Characteristic 56
14.3. Piping Length Characteristic Cooling 57
15 Exploded View (Indoor Unit) 58
16 Replacement Parts List (Indoor Unit) 59
17 Exploded View (Outdoor Unit) 60
18 Replacement Parts List (Outdoor Unit) 61
19 Electronic Circuit Diagram 62
19.1. Remote Control 69
19.2. Print Pattern Indoor Unit Printed Circuit Board 70
19.3. Print Pattern Indicator Printed Circuit Board 72
• Quality Improvement
− Random auto restart after power failure for safety restart
operation
− Gas leakage protection
− Prevent compressor reverse cycle
− Inner protector to protect compressor
− Noise prevention during soft dry operation.
− Gold Coated Condenser for high resistance to corrosion
• Operation Improvement
− Quiet mode to provide extra 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
1 Features
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2 Functions
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Outdoor Unit
To protect compressor from reverse
rotation when there is a instantaneous
power failure.
60 Sec. Forced Operation Control
Once the compressor is activated, it
does not stop within the first 60 sec.
However, it stops immediately when
received stop signal from remote control.
Overload Protector
2-stage 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)
Compressor Reverse Rotation
Protection Control
Outdoor Fan Operation Control
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3 Product Specifications
3.1. CS-MC12DKV CU-2C24DKV
Unit Indoor unit Outdoor unit
Power Source (Phase, Voltage, Cycle)
ø, V, Hz
Single
220
60
Cooling Capacity kW
(BTU/h)
(1 unit)
3.52 (12,000)
(2 units)
7.04 (24,000)
Moisture Removal I/h
(Pin/h)
(1 unit) 2.0
(4.2)
(2 units)
(8.5)
Airflow Method OUTLET
INTAKE
SIDE VIEW TOP VIEW
Air Volume Lo m3/min (cfm) 6.7 (236) × 2 —
Me m3/min (cfm) 6.8 (283) × 2 —
Hi m3/min (cfm) 9.5 (340) × 2 5.3 (1,870)
SHi m3/min (cfm) 9.7 (343) × 2 —
Noise Level dB (A) High 36 - 39, Low 29 High 54
Power level dB High 52 - 42 High 67
Electrical Data Input Power kW (1 unit)
1.19
(2 units)2.37
Running Current A (1 unit)
5.5
(2 units)
11.0
EER W/W (BTU/hW) (1 unit) 2.96 (10.08) (2 units) 2.97 (10.14)
Starting Current A 33.0 × 2
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 16 —
Length m650 —
Dimensions Height inch (mm) 11 - 1/32 (280) 29 - 17/32 (750)
Width inch (mm) 31 - 15/32 (799) 34 - 7/16 (875)
Depth inch (mm) 7 - 7/32 (183) 13 - 19/32 (345)
Net Weight lb (kg) 20 (9.0) 137 (62)
Compressor Description —Rotary (1 cylinder)
rolling piston type
Motor Type —Induction (2-poles)
Rated Output W — 850 × 2
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Unit Indoor unit Outdoor unit
Fan Motor Description Cross-flow Fan Propeller Fan
Material ASG32KI PPResin
Type Induction (4-poles) Induction (6-poles)
Input W 55.0 170.8
Rated Output W 15 77
Fan Speed Low rpm 900 —
Medium rpm 1,080 —
High rpm 1,280 870 - 870
SuperHigh rpm 1,310 —
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium Aluminium (Gold Coated)
Fin Type Slit Fin Louver Fin
Row / Stage (Plate fin configuration, forced draft)
2×15 2×34
FPI 21 18
Size (W × H × L) mm 610 × 315 × 25.4 870.5 : 850.5 × 714.0 × 25.4
Refrigerant Control Device —Capillary Tube
Refrigeration Oil (c.c) — SUNISO 4GDID or ATMOS M60
or ATMOS 56M
Refrigerant (R-22) g (oz) — 880 × 2 (31.1 × 2)
Thermostat Electrical —
Protection Device — 2-stage Overload Protector
Capillary Tube Length mm — 656
Flow Rate l/min — 17.7
Inner Diameter mm — 1.8
Air Filter Material
Style
P.P.
Honeycomb
—
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 30 µF, 400 VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 400 VAC 3.5 µF, 440 VAC
Note:
• Specifications are subjected to change without prior notice for further improvement.
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4 Dimensions
4.1. Indoor Unit & Remote Control
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4.2. Outdoor Unit
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5 Refrigeration Cycle Diagram
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6 Block Diagram
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7 Wiring Diagram
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8 Operation Details
8.1. Cooling Operation
• Cooling operation can be set using remote control.
• This operation is applied to cool down the room temperature reaches the setting temperature set on the remote control.
• The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C
to 30°C.
• During cooling operation, the compressor will stop running and restart as shown in below figure.
8.1.1. Cooling Operation Time Diagram
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8.2.1. Soft Dry Operation Time Diagram
8.2. Soft Dry Operation
• Soft Dry operation can be set using remote control.
• Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.
• This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
• When operation begins, Soft Dry will be switched “ON” for a maximum 10 minutes, then Soft Dry operation will be turned “OFF”
for a minimum 6 minutes. After that, the Soft Dry operation will be “ON” and “OFF” based on the setting temperature as shown
in below figure.
• However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will
start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point.
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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.
• The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the
circuit of JX1 at indoor electronic controller.
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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/Heating operation - the compressor stops for 3 minutes (minimum) before resume operation.
− Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.
• If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation
stop, although the unit is turn on again within the period.
• This phenomenon is to balance the pressure inside the refrigerant cycle.
8.4.2. 7 Minutes Time Save Control
• The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the
compressor ON temperature (A) and compressor OFF temperature (B) during the period.
• This phenomenon is to reduce the built up humidity inside a room.
8.4.3. 60 Seconds Forced Operation
• Once the air conditioner is turned on, the compressor will not stop within 60 seconds in a normal operation although the intake
air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON operation button at the
remote control is permitted.
• The reason for the compressor to force operate at minimum 60 seconds is to allow the refrigerant oil run in a full cycle and
return back to the outdoor unit.
8.4.4. 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.
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8.4.5. 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.
8.4.6. 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.
sT = Intake air temperature - Indoor heat exchanger temperature
• This is to prevent compressor from rotate reversely when there is an instantaneous power failure.
8.4.7. Anti-Dew Formation Control
• Purpose is to prevent dew formation on indoor unit discharge area.
• When room temperature is constant (±1°C) the following condition occur for 30 minutes continuously, anti-dew formation will
activate:
- Indoor intake 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 or QLo.
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• Anti-Dew Formation is control by:-
• Increasing Air Flow Volume
1. Lo fan speed.
Lo fan speed is changed to Lo+ after 30 min to prevent dew formation.
2. QLo fan speed.
Dew formation may occur at QLo cool, therefore QLo cool is operated only 1hr 30min (1 hr QLo, 30 min QLo + 80 rpm). After
that, it operates at QLo + 160 rpm (However Quiet LED remains on).
• Narrowing
1. Vertical Airflow Direction
During Anti-Dew condensation prevention, Airflow Direction Auto-control angle from 0° - 32° to 20° - 30° under cooling and
Soft Dry operation mode.
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During Anti-Dew condensation prevention, Airflow Direction Manual Control angle change from 10°, 15°, 20°, 26°, 32° to
22°, 24°, 26°, 28°, 30°.
8.5. Indoor Fan Speed Control
• Indoor Fan Speed can be set using remote control.
8.5.1. Fan Speed Rotation Chart
Speed Fan Speed (rpm)
CS-MC12DKV
SHi 1300
Hi 1270
Me 1050
HLo 980
CLo 920
Lo- 840
SLo 790
SS Lo -
QSHi -
QHi 1170
QMe 950
QH Lo -
QLo 820
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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 and Me.
− 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. For the resume of compressor operation, indoor fan will operate at Me fan speed to provide comfort and lesser noise
environment, after 70 seconds from the restart of compressor.
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