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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
Indoor Unit
CS-YA18MKD
CS-YA24MKD
WARNING
5. Refrigeration Cycle Diagram...........................10
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 ...............................................16
10. Installation Instruction.....................................17
10.1
Select the Best Location ............................17
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011.
Unauthorized copying and distribution is a violation of law.
Order No: PHAAM1103113C3
Outdoor Unit
CU-YA18MKD
CU-YA24MKD
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Summary of Contents for Panasonic CS-YA18MKD
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Page 1: Table Of Contents
Remote Control ..........7 Indoor Unit..........14 4. Dimensions ............8 Outdoor Unit ..........16 Indoor Unit............8 10. Installation Instruction........17 Outdoor Unit ..........9 10.1 Select the Best Location ......17 © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011. Unauthorized copying and distribution is a violation of law. - Page 2 10.2 Indoor Unit ..........18 10.3 Outdoor Unit ..........23 11. Operation Control..........27 11.1 Heating Operation ........27 11.2 Cooling Operation........28 11.3 Automatic Operation........29 11.4 Indoor Fan Speed Control ......30 11.5 Outdoor Fan Speed Control .......31 11.6 Vertical Airflow Direction Control....32 11.7 Horizontal Airflow Direction Control....34 11.8 Timer Control..........34 11.9...
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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. ... - 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-YA18MKD CS-YA24MKD Model Outdoor CU-YA18MKD CU-YA24MKD Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 50 Single, 50 Power Supply 5.20 5.20 6.70 6.70 Capacity BTU/h 17700 17700 22900 22900 kJ/h 18720 18720 24120 24120 Running Current 12.5... - Page 6 815 - 830 815 - 830 Moisture Removal L/h (Pt/h) 2.8 (5.9) 3.6 (7.6) Cooling: 13.00 (459) Cooling: 14.30 (505) /min (ft /min) Heating: 14.00 (494) Heating: 15.60 (551) Indoor Cooling: 14.60 (515) Cooling: 16.20 (572) /min (ft /min) Airflow Heating: 14.60 (515) Heating: 16.20 (572) Cooling: 16.40 (579)
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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-YA18MKD MODEL CU-YA18MKD CONNECTION CWA951353J CONNECTION 2JS318D3AA04 YELLOW-BLUE 74.60Ω 1.618Ω YELLOW-ORANGE 122.20Ω 3.718Ω YELLOW-RED 83.40Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature. Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL... -
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... - Page 15 9.1.2 Indicator Printed Circuit Board...
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Page 16: Outdoor Unit
Outdoor Unit 9.2.1 Main Printed Circuit Board... -
Page 17: Installation Instruction
10.1.3 Indoor/Outdoor Unit Installation 10. Installation Instruction Diagram 10.1 Select the Best Location 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 18: Indoor Unit
10.2 Indoor Unit 10.2.1 How to Fix Installation Plate The mounting wall is strong and solid enough to prevent if from the vibration. Dimension Model ○ ○ ○ ○ ○ ○ YA18***, YA24*** 585mm 83mm 165mm 158mm 169mm 219mm The centre of installation plate should be at more than at right and left of the wall. The distance from installation plate edge to ceiling should more than . - Page 19 10.2.3 Indoor Unit Installation 10.2.3.1 For the right rear piping 10.2.3.3 For the embedded piping 10.2.3.2 For the right and right bottom piping...
- Page 20 (This can be used for left rear piping and bottom piping also.)
- Page 21 10.2.4 Connect the Cable to the Indoor Unit Install the indoor unit on the installing holder Secure the connection cable onto the control that mounted on the wall. board with the holder. Remove front grille by loosening the screw. Fix back metal cover to original position Remove metal cover without damaging without damaging alluminium foil.
- Page 22 10.2.5 Wire Stripping and Connecting Requirement 10.2.5.1 Cutting and Flaring the Piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe.
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Page 23: 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 24 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 25 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 26 10.3.5 Connect the Cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 x 2.5mm (2.0~2.5HP) flexible cord, type designation 245 IEC 57 or heavier cord.
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Page 27: 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 28: 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 29: 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 30: 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-YA18MKD CS-YA24MKD Cool Heat 1310 1530 1240 1390 1140 1270 1100 1230 1040 1150 SSLo 11.4.2 Automatic Fan Speed Control ... -
Page 31: 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 ... -
Page 32: 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. ... - Page 33 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. ...
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Page 34: 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 35: Protection Control
12. Protection Control (For 13.1 to 13.7 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. ... -
Page 36: 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 37: 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 38: 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 39 a) Normal Deice Time Diagram b) Overload Deice Time Diagram...
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Page 40: 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 41: 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 42 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 ...
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Page 43: 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 Small Air Filter, Indoor Electronic Controllers and Control Board Removal Procedures... -
Page 46: To Remove Cross Flow Fan And Indoor Fan Motor
15.2 To Remove Cross Flow Fan and Indoor Fan Motor... -
Page 48: Technical Data
16. Technical Data 16.1 Thermostat Characteristics... -
Page 49: Operation Characteristics
16.2 Operation Characteristics 16.2.1 CS-YA18MKD CU-YA18MKD Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length:... - Page 50 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:...
- Page 51 Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length:...
- Page 52 Piping Length Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Outdoor temperature: 7°C (DBT), 6°C (WBT) Piping length:...
- Page 53 16.2.2 CS-YA24MKD CU-YA24MKD Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length:...
- Page 54 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:...
- Page 55 Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length:...
- Page 56 Piping Length Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Outdoor temperature: 7°C (DBT), 6°C (WBT) Piping length:...
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Page 57: 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 58 REF. PART NAME & DESCRIPTION CS-YA18MKD CS-YA24MKD REMARK CHASSIS COMPLETE CWD50C1654 ← FAN MOTOR ARW7628AC ARW7627AC CROSS FLOW FAN COMPLETE CWH02C1077 ← SCREW - CROSS FLOW FAN CWH551146 ← BEARING ASS’Y CWH64K007 ← EVAPORATOR CWB30C2730 CWB30C2777 FLARE NUT (LIQUID) CWT251026 ←...
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Page 59: 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 60 REF. PART NAME & DESCRIPTION CU-YA18MKD CU-YA24MKD REMARK CHASSIS ASSY CWD50K2087 ← ANTI-VIBRATION BUSHING CWH50055 ← COMPRESSOR 2JS318D3AA04 2JS438D3CC04 PACKING CWB81043 ← NUT-COMPRESSOR MOUNT CWH561049 ← SOUND PROOF MATERIAL CWG302221 ← FAN MOTOR BRACKET CWD541055 ← FAN MOTOR CWA951353J ← SCREW - FAN MOTOR BRACKET CWH551217 ←...