Owners Manual
Page 6
...the product where the noise or hot air from the outdoor unit could damage the neighborhoods. • It may cause a problem for gas (refrigerant) leakage after installation or repair of art, etc. Corrosion, particularly on the condenser and evaporator fins, could harm to your neighbors. s ...° Do not install the product where it will be used for special purposes, such as preserving foods, works of product. • Low refrigerant levels may cause water leakage. Take care to ensure that water is drained away properly. • A bad connection may cause failure of property....
...the product where the noise or hot air from the outdoor unit could damage the neighborhoods. • It may cause a problem for gas (refrigerant) leakage after installation or repair of art, etc. Corrosion, particularly on the condenser and evaporator fins, could harm to your neighbors. s ...° Do not install the product where it will be used for special purposes, such as preserving foods, works of product. • Low refrigerant levels may cause water leakage. Take care to ensure that water is drained away properly. • A bad connection may cause failure of property....
Service Manual
Page 2
Feature & Benefits ...8 4. Dimensional Drawings 16 8. Trouble Shooting Guide 32 12. (3-Way)Valve ...48 13. Models List ...3 2. Wiring Diagrams...19 9. Exploded View and Replacement Parts List 53 2 Ceiling Cassette Air Conditioner List of Remote Control 12 6. Function of Functions ...11 5. Specifications ...14 7. Installation ...22 11. TABLE OF CONTENTS Table of contents Page 1. Refrigerant Cycle Diagrams 21 10. Safety Precautions ...4 3. Electronic Control Device 52 14.
Feature & Benefits ...8 4. Dimensional Drawings 16 8. Trouble Shooting Guide 32 12. (3-Way)Valve ...48 13. Models List ...3 2. Wiring Diagrams...19 9. Exploded View and Replacement Parts List 53 2 Ceiling Cassette Air Conditioner List of Remote Control 12 6. Function of Functions ...11 5. Specifications ...14 7. Installation ...22 11. TABLE OF CONTENTS Table of contents Page 1. Refrigerant Cycle Diagrams 21 10. Safety Precautions ...4 3. Electronic Control Device 52 14.
Service Manual
Page 6
...disconnect the power supply cable. • There is risk of fire, electric shock, or product damage. drained away properly. • Low refrigerant levels may cause failure of product. uct failure. Gasolin Do not open the inlet grill of the product during Be cautious that water is ...installation or repair of product. If strange sounds, or small or smoke comes from product. I Installation Always check for gas (refrigerant) leakage after Install the drain hose to ensure that water could not enter the operation. (Do not touch the electrostatic filter, product. Safety...
...disconnect the power supply cable. • There is risk of fire, electric shock, or product damage. drained away properly. • Low refrigerant levels may cause failure of product. uct failure. Gasolin Do not open the inlet grill of the product during Be cautious that water is ...installation or repair of product. If strange sounds, or small or smoke comes from product. I Installation Always check for gas (refrigerant) leakage after Install the drain hose to ensure that water could not enter the operation. (Do not touch the electrostatic filter, product. Safety...
Service Manual
Page 8
... Air +6.5KV ++ discharge + + + Purified fresh Air Odour Generating plasma dusts aluminum coated Odor molecule electrode(-) (3.25KV discharge) 1 2 ........ 16 ........ Central Control : - LG Ceiling Cassette Air Conditioners uses environment friendly refrigerant, which don't do any harm to the room till the indoor temperature reaches 18°C(64°F). It removes not only microscopic... environment. It enables to run in jet cool mode till the Indoor temperature reaches 18°C(64°F). Features & Benefits Features & Benefits Environment Friendly Refrigerant : -
... Air +6.5KV ++ discharge + + + Purified fresh Air Odour Generating plasma dusts aluminum coated Odor molecule electrode(-) (3.25KV discharge) 1 2 ........ 16 ........ Central Control : - LG Ceiling Cassette Air Conditioners uses environment friendly refrigerant, which don't do any harm to the room till the indoor temperature reaches 18°C(64°F). It removes not only microscopic... environment. It enables to run in jet cool mode till the Indoor temperature reaches 18°C(64°F). Features & Benefits Features & Benefits Environment Friendly Refrigerant : -
Service Manual
Page 14
...(inch) 32/25(1.26/0.98) 32/25(1.26/0.98) Dehumidification rate l/h(pts/h) 3.0(6.3) 3.7(7.8) Safety Devices Fuse, Thermal protector for Fan motor Temperature sensor Thermistor Thermistor Refrigerant R410A R410A Refrigerant control EEV EEV Connectable outdoor Unit Single Single Power and Transmission interunit cable No.* mm2 (No. AWG) 4 * 2.1(14) 4 * 2.1(14) Note : 1. Outdoor Temperature 35°...
...(inch) 32/25(1.26/0.98) 32/25(1.26/0.98) Dehumidification rate l/h(pts/h) 3.0(6.3) 3.7(7.8) Safety Devices Fuse, Thermal protector for Fan motor Temperature sensor Thermistor Thermistor Refrigerant R410A R410A Refrigerant control EEV EEV Connectable outdoor Unit Single Single Power and Transmission interunit cable No.* mm2 (No. AWG) 4 * 2.1(14) 4 * 2.1(14) Note : 1. Outdoor Temperature 35°...
Service Manual
Page 15
...°F) DB /19.4°C(66.9°F) WB - Level Difference of connectable unit Compressor Type (constant) Qty * model Motor Type Oil charge volume cc Oil type Refrigerant Charge(at 7.5m(25ft)) g(oz) Type Control Heat Exchanger Rows * Column * FPI Defrosting method Fan Capacitor mF/Vac Drive Discharge Direction Side / Top Air flow...
...°F) DB /19.4°C(66.9°F) WB - Level Difference of connectable unit Compressor Type (constant) Qty * model Motor Type Oil charge volume cc Oil type Refrigerant Charge(at 7.5m(25ft)) g(oz) Type Control Heat Exchanger Rows * Column * FPI Defrosting method Fan Capacitor mF/Vac Drive Discharge Direction Side / Top Air flow...
Service Manual
Page 21
Thermistor Capacity 24k 34k Pipe Size(Diameter:Ø) inch Gas Liquid 1/4 1/2 1/4 5/8 Piping length (ft.) Rated Max. 25 100 115 Elevation (ft.) Rated Max. 16 50 16 66 Additional Refrigerant (oz/ft) 0.22 0.32 Service Manual 21 Refrigerant Cycle Diagrams 1. Cooling Only Models INDOOR UNIT OUTDOOR UNIT Refrigerant Cycle Diagrams Capillary Tube H/EX Gas Side Thermistor Accumulator Check Valve High pressure S/W Thermistor Check Valve Thermistor (Air) Heat Exchanger Constant Compressor 1 Constant Compressor 2 GAS SIDE LIQUID SIDE E.E.V.
Thermistor Capacity 24k 34k Pipe Size(Diameter:Ø) inch Gas Liquid 1/4 1/2 1/4 5/8 Piping length (ft.) Rated Max. 25 100 115 Elevation (ft.) Rated Max. 16 50 16 66 Additional Refrigerant (oz/ft) 0.22 0.32 Service Manual 21 Refrigerant Cycle Diagrams 1. Cooling Only Models INDOOR UNIT OUTDOOR UNIT Refrigerant Cycle Diagrams Capillary Tube H/EX Gas Side Thermistor Accumulator Check Valve High pressure S/W Thermistor Check Valve Thermistor (Air) Heat Exchanger Constant Compressor 1 Constant Compressor 2 GAS SIDE LIQUID SIDE E.E.V.
Service Manual
Page 26
... Seal a small opening around the pipings with two Plastic Bands. (for the refrigerant piping which has an excellent heat-resistance (over 120°C(248°F) ). 2. However, if it is operated for refrigerant piping (gas piping: thick piping) and drain piping, add further 10mm to 30mm...exterior wall and fix it with gum type sealer. In this case, add heat insulation material according to the following procedure: Indoor unit Refrigerant piping Thermal insulator (accessory) • Heat insulation material to 1.18 inch) thickness material. Adiabatic glass wool with Mist" and con ...
... Seal a small opening around the pipings with two Plastic Bands. (for the refrigerant piping which has an excellent heat-resistance (over 120°C(248°F) ). 2. However, if it is operated for refrigerant piping (gas piping: thick piping) and drain piping, add further 10mm to 30mm...exterior wall and fix it with gum type sealer. In this case, add heat insulation material according to the following procedure: Indoor unit Refrigerant piping Thermal insulator (accessory) • Heat insulation material to 1.18 inch) thickness material. Adiabatic glass wool with Mist" and con ...
Service Manual
Page 28
..., etc. • Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity, wind volume, voltage, current, presence of refrigerant? CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE • After completing work, be sure to the structure and appearance, check following items. ❏ Is ...; Is the draining smooth? ❏ Is there any faulty wiring? ❏ Is the heat insulation complete ❏ Are not terminal screws loosened? (refrigerant and drain piping)? ❏ Is there any button. Installation 8.
..., etc. • Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity, wind volume, voltage, current, presence of refrigerant? CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE • After completing work, be sure to the structure and appearance, check following items. ❏ Is ...; Is the draining smooth? ❏ Is there any faulty wiring? ❏ Is the heat insulation complete ❏ Are not terminal screws loosened? (refrigerant and drain piping)? ❏ Is there any button. Installation 8.
Service Manual
Page 32
... : approx. 0°C(0°F) All amount of refrigerant(Leakage) Clogging Description Current is low. difference : approx. 8°C(14.4°F) Refrigerant leakage Current : less than 80% of refrigerant Temp. Check temperature difference between intake and discharge air...High Normal Lower Higher Cause of Trouble Defective compressor Excessive amount of refrigerant Insufficient amount of refrigerant leaked out. Temp. rent Excessive amount of Check refrigeration cycle. Troubleshooting Guide Troubleshooting Guide Cycle Troubleshooting Guide Trouble analysis 1. ...
... : approx. 0°C(0°F) All amount of refrigerant(Leakage) Clogging Description Current is low. difference : approx. 8°C(14.4°F) Refrigerant leakage Current : less than 80% of refrigerant Temp. Check temperature difference between intake and discharge air...High Normal Lower Higher Cause of Trouble Defective compressor Excessive amount of refrigerant Insufficient amount of refrigerant leaked out. Temp. rent Excessive amount of Check refrigeration cycle. Troubleshooting Guide Troubleshooting Guide Cycle Troubleshooting Guide Trouble analysis 1. ...
Service Manual
Page 43
...; Check the components. Check the install condition for over load. 3. Check the SVC V/V open . Troubleshooting Guide Check point & Normal condition • Check the connection of refrigerant. • CH 25 1. Check the power source. 2. Troubleshooting CH24, CH25 Display code Title 24 Press S/W Open Cause of error • Low / High press S/W open . 4. Check...
...; Check the components. Check the install condition for over load. 3. Check the SVC V/V open . Troubleshooting Guide Check point & Normal condition • Check the connection of refrigerant. • CH 25 1. Check the power source. 2. Troubleshooting CH24, CH25 Display code Title 24 Press S/W Open Cause of error • Low / High press S/W open . 4. Check...
Service Manual
Page 44
...(194°F) 80°C (176°F) COMP OFF LEV OPEN LEV OPEN NORMAL Constant • CH 33 1. high (105°C(221°F) ) Cause of refrigerant. • Check the SVC V/V open. • Check the discharge pipe sensor for Cons. • Check the install condition for over load. 2. Check the ...176;C(221°F) ) D-pipe (Constant) 33 temp. Check the SVC V/V open . 3. Check the install condition for over load. • Check the leakage of refrigerant. • Check the SVC V/V open. 105°C (221°F) 95°C (203°F) 90°C (194°F) COMP OFF LEV OPEN/Hz down LEV...
...(194°F) 80°C (176°F) COMP OFF LEV OPEN LEV OPEN NORMAL Constant • CH 33 1. high (105°C(221°F) ) Cause of refrigerant. • Check the SVC V/V open. • Check the discharge pipe sensor for Cons. • Check the install condition for over load. 2. Check the ...176;C(221°F) ) D-pipe (Constant) 33 temp. Check the SVC V/V open . 3. Check the install condition for over load. • Check the leakage of refrigerant. • Check the SVC V/V open. 105°C (221°F) 95°C (203°F) 90°C (194°F) COMP OFF LEV OPEN/Hz down LEV...
Service Manual
Page 47
Check the install condition for over load. (Refrigerant, Pipe length, Blocked, ...) OFF Normal • CH 62 1. COMP Frequency (Hz) Normal Normal Check Point • CH 61 1. is locked. 2. Troubleshooting CH61, CH62 Troubleshooting Guide ...
Check the install condition for over load. (Refrigerant, Pipe length, Blocked, ...) OFF Normal • CH 62 1. COMP Frequency (Hz) Normal Normal Check Point • CH 61 1. is locked. 2. Troubleshooting CH61, CH62 Troubleshooting Guide ...
Service Manual
Page 50
... the low side of 4 mmHg or less). 5. (3-way) Valve (2) Evacuation (All amount of the manifold gauge. 3. Connect the vaccum pump to the center hose of refrigerant leaked) Indoor unit Liquid side 2-Way valve Open Outdoor unit Gas side 3-Way valve Open Vacuum pump OPEN Lo CLOSE • Procedure 1.
... the low side of 4 mmHg or less). 5. (3-way) Valve (2) Evacuation (All amount of the manifold gauge. 3. Connect the vaccum pump to the center hose of refrigerant leaked) Indoor unit Liquid side 2-Way valve Open Outdoor unit Gas side 3-Way valve Open Vacuum pump OPEN Lo CLOSE • Procedure 1.
Service Manual
Page 51
... the charge hose which you are using a gas cylinder. 3. If the system can not be charged with the specified amount of liquid refrigerant while operating the air conditioner. - Because you disconnected from the vacuum pump to charge with a little at a time (approximately 150g(5.3oz...) each time) while operating the air conditioner in the cooling cycle; If the system has been charged with liquid refrigerant. - Use torque wrench to tighten the service port nut to the charging cylinder. - (3) Gas Charging (After Evacuation) Indoor unit Liquid side ...
... the charge hose which you are using a gas cylinder. 3. If the system can not be charged with the specified amount of liquid refrigerant while operating the air conditioner. - Because you disconnected from the vacuum pump to charge with a little at a time (approximately 150g(5.3oz...) each time) while operating the air conditioner in the cooling cycle; If the system has been charged with liquid refrigerant. - Use torque wrench to tighten the service port nut to the charging cylinder. - (3) Gas Charging (After Evacuation) Indoor unit Liquid side ...