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This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
TABLE OF CONTENTS
1. Safety Precautions.............................................3
2. Specification .......................................................5
3. Location of Controls and Components ...........7
3.1
Indoor Unit....................................................7
3.2
Outdoor Unit .................................................7
3.3
Remote Control ............................................7
4. Dimensions .........................................................8
4.1
Indoor Unit....................................................8
4.2
Outdoor Unit .................................................9
5. Refrigeration Cycle Diagram...........................10
Indoor Unit
CS-YA18NKS
CS-YA24NKS
WARNING
6. Block Diagram ..................................................11
7. Wiring Connection Diagram............................12
8. Electronic Circuit Diagram ..............................13
9. Printed Circuit Board .......................................14
9.1
Indoor Unit..................................................14
9.2
Outdoor Unit ...............................................15
10. Installation Instruction.....................................16
10.1
Select the Best Location ............................16
10.2
Indoor Unit..................................................17
10.3
Outdoor Unit ...............................................21
© Panasonic Appliances Air-Conditioning (M) Sdn. Bhd. 2012.
Unauthorized copying and distribution is a violation of law.
Order No: PHAAM1203060C3
Outdoor Unit
CU-YA18NKS
CU-YA24NKS
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Table of Contents
Related Manuals for Panasonic CS-YA18NKS
Summary of Contents for Panasonic CS-YA18NKS
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Page 1: Table Of Contents
10. Installation Instruction........16 Indoor Unit............8 10.1 Select the Best Location ......16 Outdoor Unit ..........9 10.2 Indoor Unit..........17 10.3 Outdoor Unit ..........21 5. Refrigeration Cycle Diagram......10 © Panasonic Appliances Air-Conditioning (M) Sdn. Bhd. 2012. Unauthorized copying and distribution is a violation of law. - Page 2 11. Operation Control..........25 11.1 Heating Operation ........25 11.2 Cooling Operation........26 11.3 Automatic Operation........27 11.4 Indoor Fan Speed Control ......28 11.5 Outdoor Fan Speed Control .......29 11.6 Vertical Airflow Direction Control....30 11.7 Horizontal Airflow Direction Control....32 11.8 Timer Control..........32 11.9 Random Auto Restart Control ....32 11.10 Remote Control Signal Receiving Sound ............32 12.
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Page 3: Safety Precautions
1. Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. The caution items stated here must be followed because these important contents are related to safety. - Page 4 WARNING 20. After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire. 21. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire. 22.
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Page 5: Specification
2. Specification Indoor CS-YA18NKS CS-YA24NKS Model Outdoor CU-YA18NKS CU-YA24NKS Performance Test Condition SASO (T3) SASO (T1 & H1) SASO (T3) SASO (T1 & H1) Phase, Hz Single, 60 Single, 60 Power Supply 4.20 4.70 5.10 6.00 Capacity BTU/h 14300 16000... - Page 6 Cooling: 12.30 (436) Cooling: 13.80 (486) /min (ft /min) Heating: 12.90 (457) Heating: 14.00 (496) Indoor Cooling: 13.60 (479) Cooling: 15.30 (539) /min (ft /min) Airflow Heating: 13.40 (474) Heating: 14.50 (513) Cooling: 15.30 (540) Cooling: 17.40 (614) /min (ft /min) Heating: 16.00 (565) Heating: 18.20 (642)
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Page 7: Location Of Controls And Components
3. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control... -
Page 8: Dimensions
4. Dimensions Indoor Unit... -
Page 9: Outdoor Unit
Outdoor Unit... -
Page 10: Refrigeration Cycle Diagram
5. Refrigeration Cycle Diagram... -
Page 11: Block Diagram
6. Block Diagram... -
Page 12: Wiring Connection Diagram
7. Wiring Connection Diagram Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-YA18NKS / CU-YA24NKS MODEL CU-YA18NKS CU-YA24NKS CONNECTION CWA951840 CONNECTION 2KS252F5AA04 2JS386F3AA04 BLUE-YELLOW 57Ω 1.959Ω 1.048Ω YELLOW-ORANGE 65Ω 3.083Ω 1.785Ω YELLOW-RED 59Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 25°C of ambient temperature. -
Page 13: Electronic Circuit Diagram
8. Electronic Circuit Diagram... -
Page 14: Printed Circuit Board
9. Printed Circuit Board Indoor Unit 9.1.1 Main Printed Circuit Board 9.1.2 Indicator & Receiver Printed Circuit Board... -
Page 15: Outdoor Unit
Outdoor Unit 9.2.1 Main Printed Circuit Board... -
Page 16: Installation Instruction
10. Installation Instruction 10.1 Select the Best Location 10.1.3 Indoor/Outdoor Unit Installation Diagram 10.1.1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen, workshop and etc. There should not be any heat source or steam near the unit. -
Page 17: Indoor Unit
10.2 Indoor Unit 10.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration. Dimension Model ○ ○ ○ ○ ○ ○ YA18***, YA24*** 590 mm 82 mm 539 mm 532 mm 109 mm 159 mm... - Page 18 10.2.3 Indoor Unit Installation 10.2.3.1 For the right rear piping 10.2.3.2 For the right and right bottom piping 10.2.3.3 For the embedded piping (This can be used for left rear piping and bottom piping also.)
- Page 19 10.2.4 Connect the Cable to the Indoor Unit The inside and outside connection cable can be connected without removing the front grille. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 x 2.5 mm (2.0 ~ 2.5HP) flexible cord, type designation 245 IEC 57 or heavier cord. Secure the connection cable onto the control board with the holder.
- Page 20 10.2.5 Wire Stripping and Connecting Requirement...
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Page 21: Outdoor Unit
10.3 Outdoor Unit 10.3.1 Install the Outdoor Unit After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails. - Page 22 10.3.3 Evacuation of the Equipment FOR ENVIRONMENTAL PROTECTION, MANUFACTURER STRONGLY RECOMMENDS TO USE EVACUATION METHOD. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. Be sure to connect the end of the charging hose with the push pin to the service port. Connect the center hose of the charging set to a vacuum pump.
- Page 23 10.3.4 Air Purging of the Piping and Indoor The remaining air in the Refrigeration cycle which contains moisture may cause malfunction on the compressor. Remove the caps from the 2-way and 3-way valves. Remove the service-port cap from the 3-way valves. To open the valve, turn the valve stem of 2-way valve counter-clockwise approx.
- Page 24 10.3.6 Pipe Insulation Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above.
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Page 25: Operation Control
11. Operation Control 11.1 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. -
Page 26: Cooling Operation
11.2 Cooling Operation Cooling operation can be set using remote control. This operation is applied to cool down the room temperature to 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. -
Page 27: Automatic Operation
11.3 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. ↑... -
Page 28: Indoor Fan Speed Control
11.4 Indoor Fan Speed Control Indoor fan speed can be set using remote control. 11.4.1 Fan Speed Rotation Chart Speed CS-YA18NKS CS-YA24NKS 1310 1530 1240 1390 1100 1220 1060 1180 1000 1100 SSLo 11.4.2 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. -
Page 29: Outdoor Fan Speed Control
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 restarts of compressor. Auto Fan Speed during Heating operation. Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature. 11.4.3 Manual Fan Speed Control Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control. -
Page 30: Vertical Airflow Direction Control
11.6 Vertical Airflow Direction Control 11.6.1 Auto Control (Cooling Operation Condition) 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 stops operation using the remote control, the discharge vent is reset and stops at the closing position. During Cooling operation, indoor fan motor may stop to rotate at certain periods. - Page 31 11.6.2 Manual Control When the vertical airflow direction is set to Manual using the remote control, the automatic airflow is released and the airflow direction louver move up and down in the range shown in the diagram. The louver can be adjusted by pressing the button to the desired louver position. When stop operation using the remote control, the discharge vent is reset, and stop at the closing position.
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Page 32: Horizontal Airflow Direction Control
11.7 Horizontal Airflow Direction Control The horizontal airflow direction louvers can be adjusted manually by hand. 11.8 Timer Control 11.8.1 To Set the Timer To turn ON the unit at a preset time, set the timer while the unit is OFF (the operation will start 15 minutes early before the preset time). -
Page 33: Protection Control
12. Protection Control (For 12.1 to 12.7 information applies only to Cooling Operation) 12.1 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. 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. -
Page 34: Compressor Reverse Rotation Protection Control
12.6 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. -
Page 35: Overload Protection Control
12.10 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 Tb 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. -
Page 36: Cold Draft Prevention Control
12.13 Cold Draft Prevention Control 12.14 Deice Control Deice starts to prevent frosting at outdoor heat exchanger. Normal Deice Deice operation detection commences in Heating operation starts or 60 minutes after previous deice operation. If the outdoor piping temperature drops to -4°C for 50 sec. continuously during compressor is in operation, deice will start. - Page 37 a) Normal Deice Time Diagram b) Overload Deice Time Diagram...
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Page 38: Servicing Mode
13. Servicing Mode 13.1 Auto OFF/ON Button Auto OFF/ON Auto OFF/ON Auto OFF/ON Button Pressed Button Pressed Button Pressed 5 sec 5 sec Auto Operation Test Run Operation Stop Various Setting Mode Stop (Forced Cooling Operation) “Beep” 2 x “Beep” AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed. -
Page 39: Troubleshooting Guide
14. Troubleshooting Guide 14.1 Refrigeration cycle system In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan. - Page 40 14.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or strainer...
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Page 41: Disassembly And Assembly Instructions
15. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 15.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 15.1.1 To remove front grille... -
Page 42: To Remove Discharge Grille
Figure 3 Figure 4 15.2 To remove discharge grille Figure 5... -
Page 43: To Remove Control Board
15.3 To remove control board Figure 6 15.4 To remove cross flow fan and indoor fan motor Figure 7 Figure 8... - Page 44 Figure 9 Figure 10...
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Page 45: Technical Data
16. Technical Data 16.1 Thermostat Characteristics... -
Page 46: Operation Characteristics
16.2 Operation Characteristics 16.2.1 CS-YA18NKS CU-YA18NKS Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 17.000 16.500 16.000 15.500 15.000 14.500 Outdoor Air Temperature (°C) 5.200 5.000 4.800 4.600 4.400 4.200 4.000 3.800 3.600 Outdoor Air Temperature (°C) - Page 47 Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Piping length: 15.400 15.300 15.200 15.100 15.000 14.900 Piping Length (m) 4.800 4.700 4.600 4.500 4.400 Piping Length (m) 0.490 0.480 0.470 0.460...
- Page 48 Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length: 37.000 36.000 35.000 34.000 33.000 32.000 31.000 Outdoor Air Temperature (°C) 5.300 5.100 4.900 4.700 4.500 4.300 4.100 3.900 Outdoor Air Temperature (°C) 7.900 7.700 7.500 7.300 7.100 6.900 6.700...
- Page 49 Piping Length Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Outdoor temperature: 7°C (DBT), 6°C (WBT) Piping length: 36.500 36.400 36.300 36.200 36.100 Piping Length (m) 5.300 5.280 5.260 5.240 5.220 5.200 Piping Length (m) 1.820 1.800 1.780 1.760 Piping Length (m) 7.800...
- Page 50 16.2.2 CS-YA24NKS CU-YA24NKS Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 15.400 14.900 14.400 13.900 13.400 12.900 Outdoor Air Temperature (°C) 6.600 6.100 5.600 5.100 4.600 Outdoor Air Temperature (°C) 17.500 16.500 15.500 14.500 13.500 12.500...
- Page 51 Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Piping length: 13.800 13.700 13.600 13.500 13.400 13.300 Piping Length (m) 6.100 6.000 5.900 5.800 5.700 Piping Length (m) 0.460 0.450 0.440 0.430...
- Page 52 Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length: 40.500 39.500 38.500 37.500 36.500 35.500 34.500 33.500 32.500 Outdoor Air Temperature (°C) 7.300 7.100 6.900 6.700 6.500 6.300 6.100 5.900 5.700 5.500 Outdoor Air Temperature (°C) 13.000 12.800 12.600...
- Page 53 Piping Length Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Outdoor temperature: 7°C (DBT), 6°C (WBT) Piping length: 39.600 39.550 39.500 39.450 39.400 39.350 Piping Length (m) 7.300 7.250 7.200 7.150 7.100 Piping Length (m) 1.870 1.860 1.850 1.840 1.830 1.820...
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Page 54: Exploded View And Replacement Parts List
17. Exploded View and Replacement Parts List 17.1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. - Page 55 REF. PART NAME & DESCRIPTION CS-YA18NKS CS-YA24NKS REMARK CHASSIS COMPLETE CWD50C1654 ← FAN MOTOR ARW7627AC ← CROSS FLOW FAN COMPLETE CWH02C1077 ← BEARING ASS’Y CWH64K007 ← SCREW - CROSS FLOW FAN CWH551146 ← EVAPORATOR CWB30C3854 CWB30C3795 FLARE NUT (LIQUID) CWT251026 ←...
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Page 56: Outdoor Unit
17.2 Outdoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. - Page 57 REF. NO. PART NAME & DESCRIPTION CU-YA18NKS CU-YA24NKS REMARK CHASSIS ASSY CWD50K2121 CWD50K2087 COMPRESSOR 2KS252F5AA04 2JS386F3AA04 ANTI-VIBRATION BUSHING CWH50055 ← NUT-COMPRESSOR MOUNT CWH561049 ← PACKING CWB81043 CONDENSER CWB32C1646 CWB32C2681 SOUND PROOF BOARD CWH151056 ← FAN MOTOR BRACKET CWD541055 ← SCREW - FAN MOTOR BRACKET CWH551217 ←...
- Page 58 REF. NO. PART NAME & DESCRIPTION CU-YA18NKS CU-YA24NKS REMARK OVERLOAD PROTECTOR WITH WIRE CWA67C8652 WIRE NET CWD041041A ← (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock. Printed in Malaysia FY0312-0...