TABLE OF CONTENTS 1. Safety Precautions ..........3 14. Exploded View and Replacement Parts List ..............71 2. Specification ............5 14.1 Indoor Unit ..........71 3. Features ............... 9 4. Location of Controls and Components ..10 Indoor Unit ..........10 Outdoor Unit ..........
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. ...
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WARNING After completion of installation, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire. This equipment must be properly earthed.
2. Specification Indoor CS-ME5RKUA CS-ME7RKUA Model Outdoor CU-3E19RBU CU-3E19RBU Performance Test Condition AHRI AHRI Phase, Hz Single, 60 Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 1.30 1.62 2.30 1.30 1.62 2.30 1.80...
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Indoor CS-ME5RKUA CS-ME7RKUA Model Outdoor CU-3E19RBU CU-3E19RBU Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat) Fin Type Slit Fin Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 21 2 x 15 x 21 Size (W x H x L)
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Indoor CS-ME7RKUA CS-ME7RKUA Model Outdoor CU-2E18NBU CU-5E36QBU Performance Test Condition AHRI AHRI Phase, Hz Single, 60 Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 1.80 2.01 2.90 1.80 2.01 2.90 1.80 2.01 2.90 1.80 2.01...
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Indoor CS-ME7RKUA CS-ME7RKUA Model Outdoor CU-2E18NBU CU-5E36QBU Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat) Fin Type Slit Fin Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 21 2 x 15 x 21 Size (W x H x L) inch 1 x 12-13/32 x 24 1 x 12-13/32 x 24...
3. Features Inverter Technology Wider output power range Energy saving Quick Cooling More precise temperature control Environment Protection Non-ozone depletion substances refrigerant (R410A) Long Installation Piping Long piping up to 82 feet (25 meters) for 1 room, 164 feet (50 meters) for total room ...
4. Location of Controls and Components Indoor Unit Aluminium Fin Front Panel Auto OFF/ON button Air Filters Air Purifying Filter INDICATOR (Green) POWER Human activity (Orange) sensor TIMER Remote control (Green) Horizontal Airflow ECONAVI receiver and Indicator Direction Louver (Green) AUTO COMFORT •...
5. Dimensions Indoor Unit Air intake 8-7/16 direction 1/32~1/16 Air outlet Left piping 1/32~1/16 Right piping 34-9/32 direction hole hole Remote control 1-7/8 A U T O F A N SP E ED H E A T A IR...
6. Wiring Connection Diagram Indoor Unit TERMINAL REMARKS AUTO SW : BLUE P : PINK BOARD (SW01) AC306 (BLK) BR : BROWN O : ORANGE BL : BLACK Y : YELLOW FUSE301 W : WHITE G : GREEN T3.15A L250V : RED Y/G : YELLOW/GREEN TEMP.
9. Installation Instruction Select the Best Location 9.1.2 Indoor/Outdoor Unit Installation Diagram 9.1.1 Indoor Unit Do not install the unit in excessive oil fume area Attention not to bend Piping direction up drain hose (Front side) such as kitchen, workshop and etc. Right ...
Indoor Unit 9.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent it from the vibration. Wall Wall Wall More than 1 More than 1 More screw than 2 " (128 mm) DISTANCE TO PIPE HOLE CENTER 128 mm "...
9.2.3 Indoor Unit Installation Do not turn over the unit without it’s shock absorber during pull out the piping. It may cause intake grille damage. Use shock absorber during pull out the piping to protect the intake grille from damage. Piping Piping Intake grille...
Replace the drain hose Rear view for left piping installation Connection cable Piping More than 37 " (950 mm) Drain hose Drain hose Drain hose Connection cable Drain cap Adjust the piping slightly downwards. Sleeve for piping hole • • How to pull the piping and drain hose out, in case of embedded piping.
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9.2.5 Wiring Stripping and connecting requirement Wire stripping Conductor Conductor Conductor not fully inserted over inserted fully inserted Indoor/outdoor connection terminal board " (5 mm) or more No loose strand ACCEPT PROHIBITED PROHIBITED when inserted (gap between wires) RISK OF FIRE JOINING OF WIRES MAY CAUSE WARNING...
10. Operation Control 10.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
10.4.2 Temperature Sampling Control Temperature sampling is controlled by outdoor unit where room temperature for all power supply ON indoor unit could be obtained. When capability supply to the indoor unit is OFF and the compressor is ON during heating operation, the indoor fan motor is stopped.
10.7 Indoor Fan Motor Operation 10.7.1 Residual Heat Removal Control To prevent high pressure at indoor unit, when heating mode thermostat-off condition or power supply OFF, indoor fan continue to operate at controlled fan speed for maximum 30 seconds then stop. 10.7.2 Basic Rotation Speed (rpm) ...
10.8 Outdoor Fan Motor Operation Outdoor fan motor is operated with fan speed number of rotation. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation. Compressor Fan Speed Outdoor Fan 30 sec 10.9 Airflow Direction ...
10.10 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode) Purpose To provide quiet cooling operation compare to normal operation. Control condition Quiet operation start condition When “Quiet” button at remote control is pressed. Quiet LED illuminates. Quiet operation stop condition ...
10.13 Timer Control 10.13.1 ON Timer Control ON Timer can be set using remote control, where the unit with timer set will start operation earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time. ...
10.16 ECONAVI and AUTO COMFORT Operation A Pyoelectric infrared sensor is used to detect injection strength variation of infrared at setting area to determine the presence or absence of human and its activity level. Human detection area is shown in figure below: Top View 90°...
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ECONAVI and AUTO COMFORT Demo Mode To enable ECO DEMO mode, during unit is OFF (power standby): Remote control normal mode Press continously for 5s Transmit ECO demo code and after 30 seconds return to normal mode. TEM P TEM P Transmit sunlight sensor check code and after 30 seconds return to normal...
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Timer Operation When unit is turn on by ON Timer and ECONAVI and AUTO COMFORT operation is ON during previous operation before OFF, ECONAVI and AUTO COMFORT operation will not be ON automatically. When unit is turn on by ON Timer and ECONAVI and AUTO COMFORT operation is OFF during previous operation before OFF, ECONAVI and AUTO COMFORT operation will not be ON automatically.
11. Servicing Mode 11.1 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 Test Run Operation Stop (Forced Cooling Operation) (Forced Cooling Operation) Beep Beep x 2 AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed.
Press Auto OFF/ON button to toggle remote control receiving sound. - Short “beep”: Turn OFF remote control receiving sound. - Long “beep”: Turn ON remote control receiving sound. After Auto OFF/ON button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON Mode is restarted.
12. Troubleshooting Guide 12.1 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 (°F) power source, malfunction of a compressor and a fan.
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12.1.1 Relationship between the condition of the air conditioner and pressure and electric current n i l Condition of the air Electric current Electric current Low Pressure High Pressure Low Pressure High Pressure conditioner during operating during operating Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer...
12.2 Breakdown Self Diagnosis Function 12.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will ON again.
12.3 Error Code Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgement operation u l i — — — Indoor/outdoor After operation for Indoor fan only Indoor/outdoor • Indoor/outdoor wire terminal abnormal 1 minute operation can communication not establish •...
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Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgement operation Abnormal indoor 3 times happen — Wrong wiring and connecting • Check the indoor/outdoor connection wire and connection operating unit or within 40 minutes pipe, expansion valve pipe.
12.4 Self-diagnosis Method 12.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused Faulty indoor unit PCB.
12.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused Wrong models interconnected. Wrong indoor unit or outdoor unit PCBs mounted. ...
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12.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor.
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12.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused Lack of gas. Broken CT (current transformer).
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12.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused ...
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12.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection.
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12.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused Wrong models interconnected. Wrong indoor unit and outdoor unit PCBs used. Indoor unit or outdoor unit PCB defective.
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12.4.13 H34 (Outdoor Heat Sink Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.14 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.15 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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12.4.16 H59 (Human Activity Sensor Abnormality) Malfunction Decision Conditions Feedback signal of human activity sensor. Malfunction Caused Feedback signal is fixed at 0 VDC or 5 VDC continuously for 25 seconds during ECONAVI or AUTO COMFORT operation. Feedback signal is detected during ECONAVI or AUTO COMFORT off.
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12.4.17 H70 (Light Sensor Abnormality) Malfunction Decision Conditions Feedback signal of light sensor. Malfunction Caused Feedback value is 0 VDC continuously. Troubleshooting When abnormality indication starts again. For safety reason and to prevent Check the connector connection: component breakdown, always switch Turn off the power.
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12.4.18 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused Operation stops due to short circuit inside the fan motor winding. ...
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12.4.19 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
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12.4.20 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C). Malfunction Caused ...
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12.4.21 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
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12.4.22 F17 (Indoor Standby Units Freezing Abnormality) Malfunction Decision Conditions When the different between indoor intake air temperature and indoor pipe temperature is above 50°F or indoor pipe temperature is below 30.2°F Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
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12.4.23 F90 (Power Factor Correction Protection) Malfunction Decision Conditions To maintain DC voltage level supply to power transistor. To detect high DC voltage level after rectification. Malfunction Caused During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
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12.4.24 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused Lack of gas. 3-way valve close. Troubleshooting When F91 indication happens. For safety reason and to prevent component breakdown, always switch off the power before remove and...
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12.4.25 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused Compressor terminal disconnect. Faulty Outdoor PCB. Faulty compressor. Troubleshooting When F93 indication happens.
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12.4.26 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
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12.4.27 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (212°F) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (194°F) is detected by the heat sink temperature sensor.
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12.4.28 F97 (Compress or Overheating) Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (233.6°F) is detected by the compressor tank temperature sensor. Malfunction Caused Faulty compressor tank temperature sensor 2/3 way valve closed ...
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12.4.29 F98 (Input Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
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12.4.30 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused DC current peak due to compressor failure. ...
13. 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. 13.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures...
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9. Pull out the main 10. Detach connectors as labeled from the electronic controller and electronic controller. Then pull out power electronic main controller gently controller halfway. Remove screw to remove terminal board complete. CN-FM CN-CNT CN-RMT Detach the CN-DISP connector then remove the indicator complete.
13.1.5 To remove cross flow fan and indoor fan motor 14. Remove the screw that holding the cross flow fan and fan motor axis. Figure 7 16. Remove the bearing by pulling it out gently 15. Remove the screw from the evaporator.
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Cross Flow Fan Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as shown in figure 10 Figure 10...
14. Exploded View and Replacement Parts List 14.1 Indoor Unit CWH55025J CWH55051J 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.
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SAFETY REF. NO. DESCRIPTION & NAME CS-ME5RKUA REMARK CHASSIS COMPLETE CWD50C1633 FAN MOTOR L6CBYYYL0055 CROSS FLOW FAN COMPLETE CWH02C1076 BEARING CWH64K007 SCREW CWH551146 EVAPORATOR CO. CWB30C3504 FLARE NUT (1/4) - LIQUID CWT251030 FLARE NUT (3/8) - GAS CWT251031 CONTROL BOARD CASING...
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SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-ME7RKUA REMARK CHASSIS COMPLETE CWD50C1633 FAN MOTOR L6CBYYYL0055 CROSS-FLOW FAN COMPLETE CWH02C1076 BEARING ASSY CWH64K007 SCREW - CROSS - FLOW FAN CWH551146 PARTICULAR PIECE CWD933067 EVAPORATOR CWB30C5033 FLARE NUT (LIQUID) CWT251030 FLARE NUT (GAS) CWT251031 CLIP FOR SENSOR CWH321085...
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SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-ME7RKUA REMARK AIR PURIFYING FILTER CWD00C1141 BAG COMPLETE (TUBE CONNECTOR) CWH82C2030 (Note) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock. Printed in Malaysia FB0315-0...