• Up : up to 30°C • Down : down to 16°C Airflow Direction Control • Airflow direction Manual control Room temperature Display • Low, 10° ~ 35°C, Hi (LP-10091CL/XL, 15091CL/XL) Timer Control • Off Timer (1, 2, 3..7 hour) (LP-10091CL/XL, 15091CL/XL) – 5 –...
Page 6
Outdoor Unit Outdoor Fan Speed Control • One speed Sensing Discharge Pressure For Compressor • Discharge pressure sensor (High Pressure Switch) Sensing Suchion Pressure for Compressor • Suction pressure sensor (Low Pressure Switch) – 6 –...
INDOOR FAN MOTOR RELAY FOR COMP. EVA TH THERMISTOR FOR EVA TEMP. CAPACITOR FOR FAN(INDOOR) TERMINAL BLOCK(INDOOR) TERMINAL BLOCK(OUTDOOR) • OUTDOOR UNIT (LP-10091CL/XL) FIELD WIRING 380V WIRING 220V WIRING NOTICE FUSE(5A) 1. Basic wiring is 3ø,3W,220V,60Hz. 2. For changing the running...
4.2 LP-10091XL • INDOOR UNIT P/No.:3854AP2687P 1. The basic wiring of this product is 3Ø,220V 2. If you want to change the runnning voltage POWER SUPPLY to 380V, change the wiring of electric heater THERMAL FUSE 3Ø,220V,60Hz and outdoor unit. (3Ø,380V,60Hz) THERMAL FUSE MAIN PCB ASM...
4.3 LP-15091CL • INDOOR UNIT WIRING DIAGRAM P/NO: 3854A20026A MAIN PCB ASM FMi1 FMi2 CONNECT TO OUTDOOR UNIT #1 BL BK OR BL BK OR CONNECT TO OUTDOOR UNIT #2 CONNECT TO CONTACT FUSE "R","N" OF OUTDOOR #1 (250V/20A) TERMINAL BLOCK "A" SUB PCB ASM NOTE BLUE...
Page 12
4.4 LP-15091XL • INDOOR UNIT WIRING DIAGRAM P/NO: 3854A20026E 1. The basic wiring of this product is 3ø,220V 52H1 2. If you want to change the running voltage to 380V THERMAL FUSE POWER SUPPLY change the wiring of electric heater and outdoor unit THERMAL FUSE 3ø,220V,60Hz 3.
Page 16
• OUTDOOR UNIT P/NO: 3854A20026H OUTDOOR ELECTRIC CIRCUIT ( Caution ) 1. Basic wiring is 3ø,3wires,220V. 2. For changing the running voltage to 380V, please change the wiring by the next steps 1st) Remove the "a" wires from the "R" of Tmo1(Outdoor unit #1), and connect the wire to the "N"...
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 3 seconds to prevent relay noise. (Protection of fan relay and micro chip) 2.
Compressor 4. Protection of the evaporator pipe from frosting(LP-10091CL/XL) • Compressor and outdoor fan stop when indoor pipe temperature is below -2°C and restart at the pipe temperature is above 12°C. 5. Off Timer Function (10K, 15K) This function is to set the time of stopping the unit operation.
6. Alarm mode display / only displayed while operating. (10K, 15K) C C H H 0 0 : The sensor for sensing room temperature is open or short. C C H H 2 2 : Some keys of the display are out of order or short. 7.
6. Installation 6.1 Installation of Indoor, Outdoor unit 1) Selection of the best location Indoor unit 100cm • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air circulation.
Page 21
2) Indoor Unit installation 3) Outdoor unit Installation The mounting floor should be strong and solid Install the outdoor unit on the concrete or any solid enough to prevent it from vibration. base securely and horizontally. Drill the piping hole with 70mm diameter hole-core If there is any vibration transmitted to the building, drill at either the right or the left of indoor unit.
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.
Page 23
2) Preparation of installation parts and tools Installation Parts, Tools Pipe cutter (MAX 35mm Copper pipe) Cutting the pipings Remear Remove burrs from cut edges of pipes. Wrench (H5, H4 hexagonal wrench) To open the service valve Pipe bender Bending the pipings Leak detector Check a gas-leakage of connecting part of the pipings...
Page 24
6.3 Piping of Indoor Unit Pipe cutter 1) Preparation of piping Cut the pipes and the cable • Use the accessory piping kit or the pipes Slanted Rough 90° purchased locally. • Measure the distance between the indoor and the outdoor unit.
3) Precautions in bending Spring If it is necessary to bend or stretch the tubing, use the spring which is attached to the tubing in stead of pipe bender. R70mm • Please make a careful notice to make a smooth line.
6.6 Power Supply and Wiring Circuit breaker capacity MODEL OUTDOOR E/Heater The unit is completely wired internally at the factory ~100K according to general rule of electrical technology, but 100A (BUT/h) local rules, if they are required, should be complied with.
Page 27
6.7 Wiring 1) LP-10091XL • Wiring of Electric heater 3Ø, 220V 3Ø, 380V 2) LP-15091XL/20091XL • Wiring of Control Box 3Ø, 220V 3Ø, 380V – 27 –...
Page 28
6.8 Checking the Drainage and Form the Piping 1) Checking the Drainage Remove the inlet grille. Check the drainage. • Pour a glass of water into the drain pan. • Ensure if water flows drain hose of indoor unit. – 28 –...
Page 29
2) Form the Piping Wrap the connecting portion of indoor unit with the Main cable insulation material and secure it with two Plastic Gas side piping Bands. (for the right piping) • If you connect an additional drain hose, the end of Connecting Cable the drain-outlet should be kept distance from the (For heater)
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: Final check points Set operation switch at "FAN" and the fan will start. Check to ensure that the fan sounds nor- Is the unit securely mounted? mal.
Page 31
Heater ON/OFF Button(XL MODEL ONLY ) Timer Setting Button (Operation stops at ON) Fan Operation Lamp Cooling Operation Lamp Timer Operation Lamp Duct Airflow Lamp (LP-10091CL/XL MODEL ONLY) Heating Operation Lamp (XL MODEL ONLY) Outdoor Unit Operation Lamp ROOM TEMP. SET TEMP.
6.11 Indoor Unit Controls and Indicators(LP-20091CL/XL) • Controls Cooling model LOW COOL/HIGH COOL Lamp • When the unit sets cooling operation condition, the Lamp is lighted. COOL HIGH COOL HIGH COOL COOL HIGH MODE TEMP Heating and Cooling model Heating Lamp •...
7. 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...
7.1 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.
7.2 Pumping down Liquid side Indoor unit Outdoor unit Closed 3-Way valve Gas side Open 3-Way valve CLOSE CLOSE Purge the air • Procedure Confirm that both 3-way(liquid side) and 3-way(gas side) valves are set to the open position. Set the 3-way(liquid side) valve to the closed •...
Page 36
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 Confirm that both the 3-way (liquid side) valve and Discharge the refrigerant. the 3-way(gas side) valve are set to the closed •...
Page 37
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. Connect the charge set to the 3-way(gas side) valve's port.
Page 38
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. Evacuation for approximately one hour. - Confirm that the gauge needle has moved toward -76cmHg (vacuum of 4 mmHg or less).
7.4 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. •...
8. 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-...
Page 41
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.
Page 42
PACKAGE AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 220 V 198 V 242 V 380 V 342 V 418 V 8.1 No cooling and heating operation performed 1) Both the blower and the compressor do not work WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY...
Page 43
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...
8.2 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...
Page 45
8.3 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.
Page 46
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. Others Improper installation Correct it.
Page 47
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.
8.6 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.
Page 49
2) Indoor fan does not operate (LP-10091CL/XL) Is the unit operating? ON/OFF S/W ON Is the DC5V at 20 pin of MICOM? Is the DC5V at 21 pin of MICOM? Is the DC5V at 22 pin of MICOM? Replacement IC1 (MICOM) and check the EVA -Th.
Page 50
3) Indoor fan does not operate (LP-15091CL/XL) Is the unit operating? ON/OFF S/W ON Is the DC5V at 21 pin of MICOM? Is the DC5V at 22 pin of MICOM? Replacement IC1 (MICOM) Is the DC12V at each Is the DC12V at each ter- terminal of RY2 of SUB minal of RY3 of SUB PCB ASM?
Page 51
4) 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...
Page 52
5) No heater operation works 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? Replacement ICO2M (RY-Heater COIL) Is the AC220V (AC 240 V) between Replacement RY-Heater connector(HEATER) and CN-outunit Pin 1...
Page 58
2) Exploded View of Electric Heater (LP-10091XL) Top cover Bimetal(2nd) Bimetal(1st) Thermal Fuse (3rd) Fixing screw Diffuser assy Electric heater Barrier blower hole Front Heater bracket panel Barrier blower Control box Inlet grille Electric heater connector Electric heater control box Main power Electric heater Connected...
Page 59
3) Replacement Parts List PART NO. DESCRIPTION REMARK Q’TY LP-10091CL LP-10091XL BASE PAN 3040AP2624P 3040AP2624P PANEL SIDE-L 3720AP1135P 3720AP1135P PANEL SIDE-R 3720AP1135Q 3720AP1135R PANEL SIDE U-L 3720AP2297R 3720AP2297R PANEL SIDE U-R 3720AP2297S 3720AP2297S PANEL REAR-L 3720AP2221A 3720AP2221A PANEL REAR-M1 3720AP2328A 3720AP2328A PANEL REAR-M2 3720AP2329A...
Page 63
2) Exploded View of Electric Heater (LP-15091XL) Top cover Bimetal(2nd) Bimetal(1st) Thermal Thermal fuse(3rd) fuse(3rd) Fixing screw Diffuser assy Electric heater Barrier blower hole Front Heater panel bracket Barrier blower Control box (for Electric heater) Inlet grille Electric heater connector Heater cable Electric heater Electric heater...
Page 64
3) Replacement Parts List PART NO. REMARK Q'TY DESCRIPTION LP-15091CL LP-15091XL BASE 2A00410Q 2A00410Q PANEL SIDE-L 3A02242G 3A02242L PANEL SIDE-R 3A02242M 3A02242M TOP COVER 3A02244D 3A02244C PANEL REAR-B 3A02263C 3A02263B PANEL REAR-M 3A02260B 3A02260B PANEL REAR-L 3A02317B 3A02317B GRILLE TOP COVER 4A01598Q 4A01598Q BEAM-B ASSY...
Page 68
2) Exploded View of Electric Heater (LP-20091XL) Top cover Bimetal(2nd) Bimetal(1st) Thermal fuse(3rd) Fixing screw Diffuser assy Electric heater Barrier blower hole Front Heater panel bracket Barrier blower Inlet Indoor unit grille control box Control box, Connected Electric heater heater to No.1, No.3 of connector for the control box...
Page 69
3) Replacement Parts List PART NO. REMARK Q'TY DESCRIPTION LP-20091CL LP-20091XL BASE 2A00410Q 2A00410Q PANEL SIDE-L 3A02242G 3A02242L PANEL SIDE-R 3A02242H 3A02242V TOP COVER 3A02244D 3A02244C PANEL REAR-B 3A02263C 3A02263B PANEL REAR-M 3A02260B 3A02260B PANEL REAR-L 3A02317B 3A02317B GRILLE TOP COVER 4A01598Q 4A01598Q BEAM-B ASSY...
Page 70
PART NO. REMARK Q'TY DESCRIPTION LP-20091CL LP-20091XL BLOWER WHEEL ASSY 2A00578K 2A00578K CUT OFF 3G00013D 3G00013D BEARING 4G00333A 4G00333A SHAFT 3A00910A 3A00910A MOTOR 2A00187C 2A00187C CONDUCTOR ASSY 3A00274B 3A00274B PULLEY, MOTOR 3A00916P 3A00916P PULLEY-B 3A00915Q 3A00915Q V-BELT 4A01316C 4A01316C DIFFUSER ASSY 2A01107B 2A01107B BARRIER W.