Order No. MAC0501007C3
Air Conditioner
CS-A18DKD CU-A18DKD
CS-A24DKD CU-A24DKD
CONTENTS
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1 |
Features |
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8.1. Heating Operation |
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Functions |
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8.2. Cooling Operation |
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2.1. Remote Control |
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8.3. Soft Dry Operation |
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2.2. Indoor Unit |
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8.4. Automatic Operation |
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2.3. Outdoor Unit |
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8.5. Operation Control |
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Product Specifications |
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8.6. Indoor Fan Speed Control |
26 |
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3.1. CS-A18DKD |
CU-A18DKD |
6 |
8.7. Outdoor Fan Speed Control |
28 |
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3.2. CS-A24DKD |
CU-A24DKD |
8 |
8.8. Vertical Airflow Direction Control |
28 |
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Dimensions |
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8.9. Horizontal Airflow Direction Control |
29 |
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4.1. Indoor Unit & Remote Control |
10 |
8.10. Powerful Operation |
30 |
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4.2. Outdoor Unit |
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8.11. Quiet Operation |
30 |
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Refrigeration Cycle Diagram |
12 |
8.12. Ionizer Operation |
32 |
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Block Diagram |
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8.13. Timer Control |
33 |
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Wiring Diagram |
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8.14. Random Auto Restart Control |
34 |
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8 |
Operation Details |
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8.15. Remote Control Signal Receiving Sound |
34 |
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© 2004 Panasonic HA Air-Conditioning (M) Sdn Bhd |
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(11969-T). All rights reserved. Unauthorized copying |
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and distribution is a violation of law. |
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CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
9 |
Operating Instructions |
35 |
14 |
Technical Data |
70 |
10 |
Installation Instructions |
41 |
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14.1. Thermostat characteristics |
70 |
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10.1. Safety Precautions |
41 |
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14.2. Operation characteristics |
71 |
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10.2. Indoor Unit |
44 |
15 |
Exploded View (Indoor Unit) |
73 |
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10.3. Outdoor Unit |
48 |
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15.1. CS-A18DKD CS-A24DKD |
73 |
11 |
2-way, 3-way Valve |
51 |
16 |
Replacement Parts List (Indoor Unit) |
74 |
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11.1. Evacuation of the Equipment (For Europe & Oceania |
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16.1. CS-A18DKD CS-A24DKD |
74 |
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Destination) |
52 |
17 |
Exploded View (Outdoor Unit) |
75 |
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11.2. Air Purging of the Piping and Indoor Unit |
58 |
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17.1. CU-A18DKD CU-A24DKD |
75 |
12 |
Servicing Information |
64 |
18 |
Replacement Parts List (Outdoor Unit) |
76 |
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12.1. Indoor Electronic Controllers Removal Procedures |
64 |
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18.1. CU-A18DKD CU-A24DKD |
76 |
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12.2. Cross Flow Fan and Indoor Fan Motor Removal |
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19 |
Electronic Circuit Diagram |
77 |
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Procedures |
65 |
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19.1. Indoor Unit & Outdoor Unit |
77 |
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12.3. Remote Control Reset |
66 |
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19.2. Remote Control |
83 |
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12.4. Auto OFF/ON Button |
67 |
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19.3. Print Pattern Indoor Unit Printed Circuit Board |
84 |
13 |
Troubleshooting Guide |
68 |
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19.4. Print Pattern Indicator & Receiver Printed Circuit Board |
85 |
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13.1. Refrigeration cycle system |
68 |
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19.5. Print PatternOutdoor Unit Printed Circuit Board |
86 |
1 |
Features |
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• High efficiency. |
• Serviceability Improvement |
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• Compact design. |
− Removable and washable Front Panel. |
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•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 horizontal and vertical airflow.
•Long installation piping up to 25 meter.
•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.
−Inner protector 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.
•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.
2
2 Functions
2.1.Remote Control
OFF / ON |
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Operation Start/Stop |
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MODE |
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Operation Mode Selection |
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AUTO |
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Automatic Operation |
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HEAT |
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Heating Operation Mode |
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COOL |
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Cooling Operation |
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DRY |
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Soft Dry Operation |
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FAN SPEED |
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Indoor Fan Speed Selection |
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FAN |
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Low Fan Speed |
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FAN |
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Medium Fan Speed |
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FAN |
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High Fan Speed |
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AUTO |
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Automatic Fan Speed |
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FAN |
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AIR SWING |
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Airflow Direction Control |
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Vertical Automatic Airflow |
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Direction Control and Manual |
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Airflow Direction Control |
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(5 stages of adjustment). |
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Horizontal Automatic Airflow |
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Direction Control and Manual |
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Airflow Direction Control |
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(5 stages of adjustment). |
POWERFUL |
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Powerful Operation Start/Stop |
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QUIET |
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Quiet Operation Start/Stop |
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CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
TEMP.
Room Temperature Setting
Cooling, Soft Dry Operation.
•Increase or decrease set temperature (16°C to 30°C)
Automatic Operation
• 
Operation with 2°C higher than
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standard temperature. |
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Operation with standard temperature. |
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Operation with 2°C lower than |
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standard temperature. |
ON-TIMER |
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OFF-TIMER |
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Timer Operation Selection |
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24-hour, OFF / ON Real Timer Setting. |
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Time / Timer Setting |
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Hours and minutes setting. |
SET |
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CANCEL |
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Timer Operation Set / Cancel |
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ON Timer and OFF Timer setting and |
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cancellation. |
CLOCK |
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Clock Setting |
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Current time setting. |
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Ionizer Operation Start/Stop |
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3
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
2.2.Indoor Unit
AUTO
OFF / ON Automatic Operation Button
•Press for < 5 second to operate Automatic operation mode.Use when the remote control cannot be used.
•Press for > 5 second to operate Cooling operation mode and compressor force to on (“beep” sound will be 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)
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POWER (Green) ........ |
Lights up in operation, |
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blinks in Automatic |
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Operation judging. |
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TIMER (Orange) ....... |
Lights up in Timer |
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Setting. |
QUIET (Orange) ........ |
Lights up in Quiet |
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Operation. |
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POWERFUL (Orange) .. |
Lights up in Powerful |
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Operation. |
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ION (Green) ........... |
Lights up in Ionizer |
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Operation. |
•SUPER
ALLERU-BUSTER (Blue) ... Lights up in operation.
Operation Mode
•Heating, Cooling, Soft Dry and Automatic Operation.
Powerful Operation
•Reaches the desired room temperature quickly.
Timer Operation
• Delay OFF/ON Timer control.
Quiet Operation
• To provide quiet operation.
Ionizer Operation
• Generate and discharge negative ion.
Random Auto Restart Control
•Unit will be restarted, when resume from power failure, at previous setting.
Anti-Freezing Control
•To prevent indoor heat exchanger from freezing.
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 control can be adjusted automatically or manually by remote control.
Time Delay Safety Control
•Restarting is inhibited for approximately 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.
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.
4
2.3.Outdoor Unit
Compressor Reverse Rotation
Protection Control
•To protect compressor from reverse rotation when there is an instantaneous power failure.
Overload Protector
• Inner protector.
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
•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.
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
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-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
3 Product Specifications
3.1.CS-A18DKD CU-A18DKD
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Unit |
CS-A18DKD |
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CU-A18DKD |
Power Source (Phase, Voltage, Cycle) |
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Single, 220 - 230, 50 |
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Cooling Capacity |
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kW (BTU/h) |
5.30 (18,100) - 5.30 (18,100) |
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Heating Capacity |
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kW (BTU/h) |
5.65 (19,300) - 5.70 (19,400) |
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Moisture Removal |
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l/h (Pint/h) |
2.9 (6.1) |
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Airflow Method |
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OUTLET |
SIDE VIEW |
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TOP VIEW |
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INTAKE |
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Air Volume |
Lo |
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m3/min (cfm) |
Cooling; 13.1 (460) - 13.1 (460) |
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28.6 (1,010) - 31.1 (1,100) |
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Heating; 14.2 (500) - 14.2 (500) |
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Me |
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m3/min (cfm) |
Cooling; 14.5 (510) - 14.5 (510) |
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Heating; 14.7 (520) - 14.7 (520) |
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Hi |
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m3/min (cfm) |
Cooling; 15.3 (540) - 15.3 (540) |
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50.7 (1,790) - 52.7 (1,860) |
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Heating; 16.0 (560) - 16.0 (560) |
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SHi |
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m3/min (cfm) |
Cooling; 16.0 (560) - 16.0 (560) |
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Noise Level |
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dB (A) |
Cooling; High 43 - 43, Low 38 -38 |
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Cooling; High 53 - 54 |
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Heating; High 42 - 42, Low 38 -38 |
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Heating; High 54 - 55 |
Electrical Data |
Input Power |
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kW |
Cooling; 1.72 - 1.76 |
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Heating; 1.65 - 1.71 |
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Running Current |
A |
Cooling; 8.0 - 7.8 |
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Heating; 7.7 - 7.6 |
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EER |
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W/W (BTU/hW) |
Cooling; 3.08 - 3.01 (10.52 - 10.28) |
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COP |
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W/W (BTU/hW) |
Heating; 3.42 - 3.33 (11.70 - 11.35) |
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Starting Current |
A |
44.5 |
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Piping Connection Port |
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inch |
G ; Half Union 1/2” |
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G ; 3-way valve 1/2” |
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(Flare piping) |
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inch |
L ; Half Union 1/4” |
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L ; 3-way valve 1/4” |
Pipe Size |
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inch |
G ; (gas side) 1/2” |
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G ; (gas side) 1/2” |
(Flare piping) |
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inch |
L ; (liquid side) 1/4” |
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L ; (liquid side) 1/4” |
Drain |
Inner diameter |
mm |
12 |
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— |
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Hose |
Length |
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mm |
650 |
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Power Cord |
Length |
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1.9 |
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Number of core-wire |
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3 (1.5 mm2) |
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Dimensions |
Height |
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inch (mm) |
10 - 13/16 (275) |
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29 - 17/32 (750) |
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Width |
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inch (mm) |
39 - 9/32 (998) |
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34 - 7/16 (875) |
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Depth |
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inch (mm) |
9 - 1/16 (230) |
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13 - 19/32 (345) |
Net Weight |
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lb (kg) |
24 (11.0) |
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132 (60.0) |
Compressor |
Description |
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Rotary (1 cylinder) |
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rolling piston type |
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Motor |
Type |
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Induction (2-poles) |
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Rated |
Output |
kW |
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1.5 |
6
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CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD |
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Unit |
CS-A18DKD |
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CU-A18DKD |
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Air Circulation |
Description |
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Cross-flow Fan |
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Propeller Fan |
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Material |
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ASHT-18 |
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PP |
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Motor |
Type |
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Transistor (8-poles) |
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Induction (6-poles) |
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Input |
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W |
50.0 - 50.0 |
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150.3 - 150.3 |
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Rated |
Output |
W |
30 |
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80 |
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Fan Speed |
Low |
rpm |
Cooling; 1,160 - 1,160 |
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460 - 490 |
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Heating; 1,240 - 1,240 |
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Medium |
rpm |
Cooling; 1,290 - 1,290 |
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Heating; 1,290 - 1,290 |
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High |
rpm |
Cooling; 1,360 - 1,360 |
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815 - 830 |
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Heating; 1,400 - 1,400 |
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SuperHigh |
rpm |
Cooling; 1,400 - 1,400 |
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Heat Exchanger |
Description |
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Evaporator |
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Condenser |
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Tube material |
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Copper |
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Copper |
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Fin material |
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Aluminium (Pre Coat) |
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Aluminium |
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Fin Type |
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Slit Fin |
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Corrugated Fin |
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Row / Stage |
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(Plate fin configuration, forced draft) |
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2 × 15 |
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2 × 28 |
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FPI |
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21 |
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16 |
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Size (W × H × L) |
mm |
810 × 315 × 25.4 |
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827.7 × 711.2 × 44 |
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862.2 |
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Refrigerant Control Device |
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Capillary Tube |
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Refrigeration Oil |
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(cm3) |
— |
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SUNISO 4GDID or ATMOS |
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M60 or ATMOS 56M |
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Refrigerant (R-22) |
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g (oz) |
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1,710 (60.4) |
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Thermostat |
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Protection Device |
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Inner Protector |
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Capillary Tube |
Length |
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mm |
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Cooling; 970, Heating; 820 |
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Flow Rate |
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l/min |
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Cooling; 11.0, Heating; 27.0 |
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Inner Diameter |
mm |
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Cooling; 1.6, Heating; 2.2 |
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Air Filter |
Material |
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P.P. |
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Style |
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Honeycomb |
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Capacity Control |
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Capillary |
Tube |
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Compressor Capacitor |
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µF, VAC |
— |
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45 µF, 400/440VAC |
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Fan Motor Capacitor |
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µF, VAC |
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3.5 µF, 440VAC |
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Note:
• Specifications are subject to change without notice for further improvement.
7
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
3.2.CS-A24DKD CU-A24DKD
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Unit |
CS-A24DKD |
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CU-A24DKD |
Power Source (Phase, Voltage, Cycle) |
, V, Hz |
Single, 220 - 230, 50 |
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Cooling Capacity |
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|
kW (BTU/h) |
7.03 - 7.03 (24,000 - 24,000) |
||
|
|
|
|
|
|
|
Heating Capacity |
|
|
kW (BTU/h) |
7.80 - 7.80 (26,600 - 26,600) |
||
|
|
|
|
|
|
|
Moisture Removal |
|
|
l/h (Pint/h) |
4.0 (8.5) |
|
|
Airflow Method |
|
|
OUTLET |
SIDE VIEW |
|
TOP VIEW |
|
|
|
INTAKE |
|
|
|
|
|
|
|
|
|
|
Air Volume |
Lo |
|
m3/min (cfm) |
Cooling; 13.7 (480) - 13.7 (480) |
|
28.1 (990) - 29.9 (1,055) |
|
|
|
|
Heating; 14.7 (520) - 14.7 (520) |
|
|
|
Me |
|
m3/min (cfm) |
Cooling; 15.8 (560) - 15.8 (560) |
|
— |
|
|
|
|
Heating; 15.8 (560) - 15.8 (560) |
|
|
|
Hi |
|
m3/min (cfm) |
Cooling; 16.8 (590) - 16.8 (590) |
|
49.7 (1,750) - 50.7 (1,790) |
|
|
|
|
Heating; 17.6 (620) - 17.6 (620) |
|
|
|
SHi |
|
m3/min (cfm) |
Cooling; 17.6 (620) - 17.6 (620) |
|
— |
Noise Level |
|
|
dB (A) |
Cooling; High 47 - 47, Low 41 - 41 |
|
Cooling; High 53 - 54 |
|
|
|
|
Heating; High 46 - 46, Low 41 - 41 |
|
Heating; High 54 - 55 |
Electrical Data |
Input Power |
|
kW |
Cooling; 2.54 - 2.58 |
||
|
|
|
|
Heating; 2.53 - 2.56 |
||
|
Running Current |
A |
Cooling; 12.3 - 12.2 |
|||
|
|
|
|
Heating; 12.2 - 12.1 |
||
|
EER |
|
W/W (BTU/hW) |
Cooling; 2.77 - 2.72 (9.45 - 9.30) |
||
|
COP |
|
W/W (BTU/hW) |
Heating; 3.08 - 3.05 (10.51 - 10.39) |
||
|
Starting Current |
A |
65.0 |
|
||
Piping Connection Port |
|
|
inch |
G ; Half Union 5/8” |
|
G ; 3-way valve 5/8” |
(Flare piping) |
|
|
inch |
L ; Half Union 1/4” |
|
L ; 3-way valve 1/4” |
Pipe Size |
|
|
inch |
G ; (gas side) 5/8” |
|
G ; (gas side) 5/8” |
(Flare piping) |
|
|
inch |
L ; (liquid side) 1/4” |
|
L ; (liquid side) 1/4” |
Drain |
Inner diameter |
mm |
12 |
|
— |
|
Hose |
|
|
|
|
|
|
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) |
|
29 - 17/32 (750) |
|
Width |
|
inch (mm) |
39 - 9/32 (998) |
|
34 - 7/16 (875) |
|
Depth |
|
inch (mm) |
9-1/16 (230) |
|
13 - 19/32 (345) |
Net Weight |
|
|
lb (kg) |
26 (12.0) |
|
139 (63.0) |
Compressor |
Description |
|
|
— |
|
Rotary (1 cylinder) rolling |
|
|
|
|
|
|
piston type |
|
Motor |
Type |
|
— |
|
Induction (2-poles) |
|
Rated |
Output |
kW |
— |
|
2.0 |
Air Circulation |
Description |
|
|
Cross-flow Fan |
|
Propeller Fan |
|
Material |
|
|
ASHT-18 |
|
PP |
|
Motor |
Type |
|
Transistor (8-poles) |
|
Induction (6-poles) |
|
Rated |
Output |
W |
30 |
|
80 |
|
Fan Speed |
Low |
rpm |
Cooling; 1,280 - 1,280 |
|
460 - 490 |
|
|
|
|
Heating; 1,380 - 1,380 |
|
|
|
|
Medium |
rpm |
Cooling; 1,480 - 1,480 |
|
— |
|
|
|
|
Heating; 1,480 - 1,480 |
|
|
|
|
High |
rpm |
Cooling; 1,570 - 1,570 |
|
815 - 830 |
|
|
|
|
Heating; 1,650 - 1,650 |
|
|
|
|
SuperHigh |
rpm |
Cooling; 1,650 - 1,650 |
|
— |
8
|
|
|
|
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD |
||
|
|
|
|
|
|
|
|
|
Unit |
CS-A24DKD |
|
CU-A24DKD |
|
Heat Exchanger |
Description |
|
Evaporator |
|
Condenser |
|
|
Tube material |
|
Copper |
|
Copper |
|
|
Fin material |
|
Aluminium (Pre Coat) |
|
Aluminium |
|
|
Fin Type |
|
Slit Fin |
|
Corrugated Fin |
|
|
Row / Stage |
|
(Plate fin configuration, forced draft) |
|
||
|
|
|
2 × 15 |
|
2 × 28 |
|
|
FPI |
|
21 |
|
18 |
|
|
Size (W × H × L) |
mm |
810 × 315 × 25.4 |
|
827.7 × 711.2 × 44.0 |
|
|
|
|
|
|
862.2 |
|
Refrigerant Control Device |
|
— |
|
Capillary Tube |
|
|
Refrigeration Oil |
|
(cm3) |
— |
|
SUNISO 4GDID or ATMOS |
|
|
|
|
|
|
M60 or ATMOS 56M |
|
Refrigerant (R-22) |
|
g (oz) |
— |
|
2,050 (72.4) |
|
Thermostat |
|
|
— |
|
— |
|
Protection Device |
|
|
— |
|
Inner Protector |
|
Capillary Tube |
Length |
mm |
— |
|
Cooling; 730, Heating; 340 |
|
|
Flow Rate |
l/min |
— |
|
Cooling; 12.5, Heating; 21.0 |
|
|
Inner Diameter |
mm |
— |
|
Cooling; 1.6, Heating; 2.0 |
|
Air Filter |
Material |
|
P.P. |
|
— |
|
|
Style |
|
Honeycomb |
|
|
|
Capacity Control |
|
|
Capillary Tube |
|
||
Compressor Capacitor |
|
µF, VAC |
— |
|
45 µF, 400/440VAC |
|
Fan Motor Capacitor |
|
µF, VAC |
— |
|
3.5 µF, 440VAC |
|
Note:
• Specifications are subject to change without notice for further improvement.
9
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
4 Dimensions
4.1.Indoor Unit & Remote Control
4.1.1.CS-A18DKD CS-A24DKD
10
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
4.2.Outdoor Unit
4.2.1.CU-A18DKD CU-A24DKD
11
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
5 Refrigeration Cycle Diagram
12
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
6 Block Diagram
13
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
7 Wiring Diagram
14
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
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
15
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
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
16
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
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
17
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
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 refering 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 mode will be continued, if the room temperature does not reach to set temperature (Compressor keeps running) eventhrough 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 automaticlly 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 |
• 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.
18
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
8.5.Operation Control
8.5.1. 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.
8.5.2. 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)/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 = Intake air temperature - Indoor heat exchanger temperature
•This is to prevent compressor from rotate reversely when there is an instantaneous power failure.
19
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
(For 8.5.3. to 8.5.7. information applies only to Cooling and Soft Dry Operation)
8.5.3.7 Minutes Time Save Control
•The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the compressor ON temperature (A) and compressor OFF temperature (B) during the period.
•This phenomenon is to reduce the built up humidity inside a room.
8.5.4. 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.
8.5.5. 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.
8.5.6. 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.
20
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
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 or QLo.
•This control is cancelled immediately when above condition is changed.
•Anti-Dew formation is control by:
1.Increasing Air Flow Volume
a.Lo fan speed
Lo fan speed is changed to Lo+ after 30 min to prevent dew formation.
b.QLo fan speed
Dew formation may occurs at QLo cool, therefore QLo cool is operated only 1 hr 30 min (1 hr QLo, 30 min QLo +100 rpm). After that, it operates at QLo +180rpm (However Quiet LED remains on).
2.Norrowing
Vertical Airflow Direction
−During Anti-dew condensation prevention, Airflow Direction Auto-control angle change from 10° - 38° to 10° - 27° under Cooling and Soft Dry operation mode.
21
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
−During Anti-dew condensation prevention, Airflow Direction Manual control angle change from 10°, 14°, 18°, 22°, 27° to 10°, 13°, 16°, 19°, 22° under Cooling and Soft Dry operation mode.
3.Narrowing
Horizontal Airflow Direction
−During Anti-dew condensation prevention, Airflow Direction Auto-control angle change from 0° - 44° to 14° - 30° under Cooling and Soft Dry operation mode.
−During Anti-dew condensation prevention, Airflow Direction Manual control angle change from 0°, 11°, 22°, 33°, 44° to 14°, 18°, 22°, 26°, 30° under Cooling and Soft Dry operation mode.
(For 8.5.8. to 8.5.13. information applies only to Heating Operation)
8.5.8.Overload Protection Control
•Outdoor Fan Control
−If the temperature of the Outdoor Heat Exchanger less than -3°C, Outdoor Fan is ON. The Outdoor Fan stop, when Outdoor Heat Exchanger temperature is T
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).
22
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
•Compressor high pressure protection
−If the indoor heat exchanger becomes 68°C or more, the compressor will stop and restart automatically.
−Time Delay Safety Control is activated before the compressor restart.
8.5.9. 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.
8.5.10. 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.
8.5.11. Hot Start Control
•Hot Start Control is to prevent cool air discharge into the room when heating operation start.
•When Heating operation starts, Indoor fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.
• Hot start is completed when indoor heat exchanger rises to 42°C or operation over 4 minutes.
23
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
8.5.12. 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 (Termo 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.
8.5.13. Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
•Normal Deicing
Deice operations detection commences after 60 minutes of Heating operation starts or 60 minutes after previous deice operation. If the TRS (Thermal Read Switch) senses the outdoor piping temperature drops to -4°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.The outdoor piping temperature rises to 12°C.
•After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.
24
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
Normal Deicing Time Diagram
Overload Deicing Time Diagram
25
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
8.6.Indoor Fan Speed Control
• Indoor Fan Speed can be set using remote control.
8.6.1.Fan Speed Rotation Chart
Fan Speed |
|
CS-A18DKD |
CS-A24DKD |
|
Cool, Dry |
|
Heat |
|
|
SHi |
|
Hi |
1460 |
1650 |
Hi |
|
- |
1400 |
1590 |
Me |
|
Me |
1320 |
1480 |
Lo+ |
|
Lo |
1270 |
1380 |
Lo |
|
- |
1190 |
1280 |
Lo- |
|
Lo- |
980 |
1070 |
SLo |
|
SLo |
760 |
830 |
- |
|
SSLo |
300 |
300 |
QSHi |
|
QHi |
1360 |
1550 |
QHi |
|
- |
1300 |
1490 |
QMe |
|
QMe |
1220 |
1380 |
- |
|
QLo |
1170 |
1280 |
QLo |
|
- |
1090 |
1180 |
8.6.2.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.
26
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