1. PREFACE This service manual provides various service information, containing the mechanical and electrical parts and etc. This package air conditioner was manufactured and assembled under the strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit. 1.1 Safety Precautions ¤...
1.4 Functions Indoor Unit Power Switch ON/OFF Operation Mode Control • Cooling, Soft Dry, Auto, Fan ¢¡ Cooling Model • Cooling, Heating, Soft Dry, Fan ¢¡Heat Pump Model Sensing the room temperature • Room temperature sensor (Thermistor) Controlling the room temperature •...
Remote Control Operation ON/OFF Operation Mode Selection • Cooling, Soft Dry, Auto, Fan ¤I Cooling Only Model • Cooling, Heating, Soft Dry, Fan, ¤I E/heater Heat Pump Model Fan Speed Selection • High, Medium, Low Setting the temperature • Up or Down Timer Control •...
4. WIRING DIAGRAM Indoor & Outdoor Unit Circuit Diagram (1) LP-E5082CL/CA INDOOR UNIT OUTDOOR ELECTRIC FUSE (250V 5A) CIRCUIT FUSE (250V 5A) TERMINAL R S T N POWER BLCOCK RELAY POWER SUPPLY TERMINAL BLOCK CAPACITOR CAPACITOR TO INDOOR UNIT NOTE MOTOR MOTOR BLUE...
(2) LP-E5082HL/HA/ZL/ZA INDOOR ELECTRIC CIRCUIT OUTDOOR UNIT WIRING DIAGRAM Fuse (250V 5A) C TH Deice PCB HIGH PRESSURE S/W Fuse (250V 5A) POWER RELAY TERMINAL S T N BLOCK POWER T/B1 RELAY POWER SUPPLY T/B2 CAPACITOR CAPACITOR YL BK YL BK MOTOR MOTOR REVERSING...
(5) LP-E50B0CL/CA INDOOR UNIT OUTDOOR WIRING DIAGRAM FUSE 250V 5A FUSE EOCR Current Setting. 250V 5A POWER SUPPLY CURRENT TIME 3ø,220V,60Hz 5 31 R S T N RUN CAPACITOR FOR MOTOR MAGNETIC CONTACTOR 6 32 EOCR TERMINAL BLOCK(Outdoor Unit) 3ø,3Wires 220V MAIN TERMINAL BLOCK CRANKCASE HEATER NOTE...
(6) LP-E50B0HL/HA INDOOR ELECTRIC CERCUIT Outdoor Unit Wiring Diagram WIRING FOR 220V WIRING OF FIELD (CONNECTING WIRE) NOTE BLUE BLACK WHITE C TH BROWN YELLOW ORANGE GN/YL GREEN/YELLOW ( Caution ) 63H2 1. Basic wiring is 3ø,3 wires, 220V. 52F1 2.
(7) LP-E5092CL/CA INDOOR UNIT OUTDOOR WIRING DIAGRAM FUSE 250V 5A FUSE EOCR Current Setting. 250V 5A POWER SUPPLY CURRENT TIME 3ø,380V,60Hz 17.5 5 31 R S T N RUN CAPACITOR FOR MOTOR MAGNETIC CONTACTOR 6 32 EOCR TERMINAL BLOCK(Outdoor Unit) 3ø,3Wires 220V MAIN TERMINAL BLOCK CRANKCASE HEATER...
(8) LP-E5092HL/ZL/HA/ZA INDOOR ELECTRIC CIRCUIT Outdoor Unit Wiring Diagram C TH WIRING FOR 380V WIRING FOR 220V NOTE WIRING OF FIELD (CONNECTING WIRE) 63H2 BLUE BLACK WHITE 52F1 BROWN YELLOW ORANGE GN/YL GREEN/YELLOW R S T N 5 31 T/B1 63H2 HIGH PRESSURE SWITCH FOR HEATING C TH...
5. OPERATION DETAILS (1) The function of main control 1. Time Delay Safety Control • 3min ... The compressor is ceased for 3 minutes to balance the pressure in the refrigeration cycle. (Protection of compressor) • 3sec ... The indoor fan is ceased for 1~3 seconds to prevent relay noise. (Protection of fan relay and micro chip) •...
4. Auto Operation (Cooling Model only) ƒUThe operation procedure is as following. Press Start/Stop Button Select Auto Operation Mode Check the Room temperature ƒ ƒ U U Auto Operation for Cooling Operation Condition Intake-air Temperature Setting temperature Fan speed Over 26°C 25°C Controlled Over 24°C~below 25.5°C...
5. Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following. Intake Air Temp. Setting Temp. +1°C (Compressor OFF) Setting Temp. (Compressor ON) Setting Temp. -1°C minimum minimum 10sec.
6. Hot-Start Control • The indoor fan stops until the evaporator piping temperature will be reached to 28°C. • During heating operation, if piping temperatures fall below 26°C fan stops. • The operation diagram is as following. Maximum 1min INDOOR PIPE TEMP.
8. Soft Dry Operation Mode • During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 2°C, the compres- sor OFF temperature is the setting temperature minus 1°C. • When the room temperature rises over the compressor ON temperature, the operation mode is switched to the Cooling mode.
12. Off Timer Function This function is to set the time of stopping the unit operation. The procedure is as the following. 1st: Press the timer set button on the Remocon. 2nd: The buzzer sounds and then the display window shows the Off-Time to be set as 1:00¡ ... ¡ 7:00 ¡ 0:00. - The Off-Time is shifted as the following by each press.
6. INSTALLATION 6.1 Installation of indoor, Outdoor Unit 1) Select the best location ¥LIndoor unit • There should not be any heat source or steam near the unit. 40cm • There should not be any obstacles to prevent the air circulation.
2) Indoor Unit installation 3) Outdoor unit Installation ¥LThe mounting floor should be strong and solid ¥LInstall the outdoor unit on the concrete or any solid enough to prevent it from vibration. base securely and horizontally by securing it with bolts (Ø12mm) and nuts.
6.2 Installation Method 1) Procedure Installation works Descriptions Preparation of tools and installation parts Preparation of installation Flaring the pipes To insert the flare nuts, mounted on the connection parts of both indoor and outdoor unit, onto the copper pipes. Pipe bending To reduce the flow resistance of refrigerant.
2) Preparation of installation parts and tools Installation Parts, Tools Flaring tool (Ø 6,35 - Ø 19,05) Flaring the pipes Reamer Remove burrs from cut edges of pipes. Pipe cutter (Max 35mm Copper pipe) Cutting the pipings Wrench (H5, H4 hexagonal wrench) To open the service valve Pipe bender Bending the pipings...
6.3 Piping of indoor unit Pipe cutter 1) Preparation of pipings ¤ Cut the pipes and the cable Slanted Rough 90° • Use the accessory piping kit or the pipes purchased locally. • Measure the distance between the indoor and the outdoor unit.
2) Connection of pipings ¤ Move the indoor tubing and drain hose to the hole • Remove tubing holder and pull the tubing out of the chassis. ¤ŁReplace the tubing holder into original position ¤ØRoute the tubing and the drain hose staight backwards.
6.4 Connecting the cable to indoor unit The inside and outside connecting cable can be connected after opening the inlet grille. ¤ Open the inlet grille manually. ¤ŁOpen the control cover with Driver ( ¤ØConnect the wire to the housing on the control board. ¤ŒSecure the cable onto the control board with clamp.
6.5 Connecting Pipings and the cable to Outdoor unit 1) Connecting the pipings to the outdoor unit . ¥LAlign the center of the pipings and sufficiently tighten the flare nut with fingers. ¥MFinally tighten the flare nut with torque wrench until the wrench clicks.
6.6 Power Supply and Wiring and thickness.) The unit is completely wired internally at the factory ¤ Never fail to equip a leakage brake where it is wet according to general rule of electrical technology, but or moist. local rules, if they are required, should be complied with.
6.7 Air Purging of the Piping and Indoor Unit 1) Air purging The air which contains moisture and remains in the Outdoor unit Refrigeration cycle may cause a malfunction on the compressor. To indoor unit ¤ Remove the caps from the 3-way(liquid side) and 3-way(gas side) valves.
¤ Set the both 3-way(liquid side) and 3-way(gas side) valves to open position with the hexagonal wrench for the unit operation. ¤ Checking the gas leakage for the left piping. • Connect the manifold gauge to the service port of 3-way(gas side) valve. Measure the pressure.
6.8 Checking the Drainage and Form the Piping 1) Checking the Drainage ¤ Remove the inlet grille with your hands as shown (right and left) and pull in the direction indicated by the arrow. ¤ŁCheck the drainage • Pour a glass of water into the Drain pan. •...
2) Form the Piping ¤ Wrap the connecting port of indoor unit with the insulation material and secure it with two Plastic Bands. (for the right Piping) Gas side • If you connect an additional drain hose, the end of piping the drain-outlet should be water, and fix it on the Main cable...
6.9 Final Check and Test Run After installing the unit, perform the final check and run- Running test should be accomplished as follows: ning test as follows: ¤ Set operation switch at "FAN" and the fan will start. Check to ensure that the fan sounds normal. ¤...
6.10 Installation Check List 1. Is the unit securely mounted and levelled? Space for Evaporator Air Flow Space for Condenser Air Flow Space for Maintenance Work Noise and Vibration Appearance 2. Is electrical wiring system adequate? Wire Size Tightened Connection Switch Size Operation Control Devices Fuse Size...
6.11 Running Test and Maintenance Record JOB NUMBER: POWER SUPPLY : Main Power_______ V, ________ Hz Indoor Unit Outdoor Unit Model Production No. Accessory Attached : CUSTOMER'S NAME AND ADDRESS : (PHONE NO.: INSTALLED BY: DATE: START UP BY: DATE: 1.
7. OPERATING 7.1 Display (Heat Pump Model) (Cooling only Model) 13 12 14 15 13 12 14 ROOM TEMP. SET TEMP. ROOM TEMP. SET TEMP. A/CL A/CL ¤ START/STOP BUTTON ¤ HEATING OPERATION LAMP Operation starts when this button is pressed and stops when the button is pressed again.
7.2 Control ¤ Signal Transmitter • Transmits the signals to the package air conditioner ¤Ł Operation Display of the Remote Control ¤Ø Indoor Fan Speed Selection Button A/CL • To select the desired fan speed in three steps [Low, Med, High] ¤Œ...
7.3 Remote Control Preparation How to mount onto a wall Use the screws to secure the holder to the wall or attach the holder side of indoor unit. To insert the remote control to the holder. Insert Pull How to insert batteries Remove the cover from the back of the remote controller.
8. 3-WAY VALVE 3-Way Valve (Liquid Side) 3-Way Valve (Gas Side) Valve cap Valve cap Open position Open position Flare nut Closed position Flare nut Closed position piping piping Service Service connection Service Service connection port cap port port cap port To outdoor unit To outdoor unit...
8.1 Air purging Required tools: hexagonal wrench, adjustable wrench, torque wrench, and gas leak detector. The additional gas for air purging has been charged in the outdoor unit. However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and the charge set will be needed.
8.2 Pumping down Liquid side Indoor unit Outdoor unit Closed 3-Way valve Gas side Open 3-Way valve CLOSE CLOSE Purge the air • Procedure ¤ºSet the 3-way(liquid side) valve to the closed ¤ Confirm that both 3-way(liquid side) and 3-way(gas position.
1) Re-air purging (Re-installation) Liquid side Indoor unit Closed 3-Way Outdoor unit valve Gas side Closed 3-Way valve Gas cylinder OPEN CLOSE • Procedure ¤ºDischarge the refrigerant. ¤ Confirm that both the 3-way (liquid side) valve and • Close the valve on the gas cylinder and discharge the 3-way(gas side) valve are set to the closed the refrigerant until the gauge indicates 3 to position.
2) Balance refrigerant of the 3-way(liquid side), 3-way(gas side) valves (Gas leakage) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open OPEN CLOSE • Procedure ¤ Confirm that both the liquid side and gas side valves are set to the back seat. ¤ŁConnect the charge set to the 3-way(gas side) valve's port.
Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open Vacuum pump OPEN CLOSE • Procedure ¤ Connect the vacuum pump to the center hose of charge set. ¤ŁEvacuation for approximately one hour. - Confirm that the gauge needle has moved toward -76cmHg (vacuum of 4 mmHg or less).
8.4 Gas Charging 1) Cooling mode (After Evacuation) Liquid side Indoor unit Outdoor unit Open 3-Way valve Gas side Open 3-Way valve Check valve Charging cylinder OPEN CLOSE • Procedure ¤ Connect the charge hose to the charging cylinder. This is different from previous procedures. •...
2) Heating Mode (After Evacuation) Charging cylinder OPEN CLOSE Check valve Liquid side Indoor unit Open Outdoor unit 3-Way valve Gas side Open 3-Way valve • Procedure ¤ Connect the charge hose to the charge cylinder. This is different from previous procedures. •...
9. TROUBLESHOOTING GUIDE In general, possible trouble is classified as two causes. The one is so called Starting Failure which is caused from an electrical defect, and the other is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application. Unit runs but ineffective cooling Ineffective Cooling or Heating Check of cold (warm) air cir-...
Failures to Start Check power source. Check of circuit breaker and fuse. Check control switch Check control switch. setting. Compressor only fails to Fan only fails to start start Electric heater is not energized Improper wiring Drop of power voltage Loose terminal connection.
PACKAGE AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 380 V 342 V 418 V 220 V 198 V 242 V 380 - 415 V 342 V 456 V 9.1 No cooling and heating operation performed 1) Both the blower and the compressor do not work WHAT TROUBLED COMPLAINTS HOW TO CHECK...
3) Only outdoor fan does not work WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Motor Over-heated Check how it is insulated. Repair or replace it. Layer short Electric Wiring Open wire on operation Check it with a tester. Rewiring or repair. Short circuited operation...
9.2 The Units discontinue after the operation started WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Other parts than the unit Improper opening of the Checking Open it properly service valves in the refrigerant line Wash it by means of Checking Outdoor coil Coil is dirty *1 something like chemical...
9.3 The unit is working, but not cooling and heating sufficiently (Both blower and compressor are working) WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Load Heat load increased. Much heat load Do necessary disposal Window or door has many respectively. cracks or gaps.
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY Electric troubles Defective contact. Checking Repair and clean or (Magnetic Defective contact point. replace it. contactor) Rusting and faults in the iron core contact face. Defective contact of the operating switch. Correct it. Others Improper installation Checking...
Fault Cause Check/Correcitve Action Discharge pressure is lower than standard. See "Low Discharge Pressure". Check the power supply line and the Single or three phases running. contactor. High or low voltage or phase unbalance. Check the voltage and phase unbalance. Internal Refrigerant short charge or leakage.
9.6 Electronic Parts Troubleshooting Guide 1) No cooling operation performed. Is the AC220V (AC 240 V) between Connector(CN- outunit) Pin 1 and Pin 3 of Main P.C.B Is the input power AC220V (AC240V) at COMP Magnetic coil? Is the unit operating? Check the magnetic Check the wiring contactor of outdoor unit.
2-1) Indoor fan does not operate Is the unit operating? Reset the power ON/OFF S/W Is the DC5V at 20pin of (MICOM)? Is the DC5V at 21pin of (MICOM)? Is the DC5V at 22pin of (MICOM)? Replacement (MICOM) and check the EVA-Th. Is the DC12V Is the DC12V Is the DC12V...
3) Airflow Direction does not operate. Is the unit operating? The power ON/OFF S/W ON Is the Auto Swing S/W "ON"? Press the Auto Swing S/W Is the DC5V at 16 terminal? Replacement MICOM (MICOM) Is the DC12V Replacement ICO2M at each terminal? (RY-Sync COIL) Is the AC220V(240V)
4) Remote control does not operate. Is the battery of remote Replacement battery controller normal? Is the CN-Disp1 Check the connector. connector normal? CN-Disp1 Does the operation Replacement remote-controller of remote controller properly? Is the Pre-amp of Replacement preamp assy display normal? Replacement MICOM –...
5) The unit does not operate. Is the AC220V 1. Check the electric connections (240V) at Trans input terminal? 2. Check the fuse of Main PCB ASM Replacement Trans Is the AC12-18V at Trans (2nd)? Is the connector of Check the connector of Main/Display correct? Main/Display Is the DC5V between PIN64...
7) No heating operation works Is the AC220V (AC 240 V) between connector (CN-outunit) Pin 1 and Pin 3 of Main P.C.B Is the input power AC220V (AC240V) at COMP magnetic coil contactor? Is the unit operating? Check the wiring Check the COMP magnetic connection contactor of outdoor unit.
8) No heater operation works Select the heating operation mode. Is the heating operating? Is the Compressor Compressor "ON" operating? Is the Heat S/W of Main Heat S/W "ON" PCB "ON"? Is the DC 5V at 15 pin of Replacement MICOM MICOM Is the DC 12V at eack terminal?