Owners Manual
Page 3
...Manualslib.com manuals search engine Owner's Manual 3 Securely attach the electrical part cover to the indoor unit and the service panel to dust, water, etc. This symbol indicates the possibility of the outdoor unit are as shown below. Be sure to properties only. s Installation Always perform grounding. ... electrical shock. s The meanings of the symbols used in a fire or electric shock due to the outdoor unit. • If the electrical part cover of the indoor unit and the service panel of injury or damage to follow the instruction. This symbol indicates the possibility of the ...
...Manualslib.com manuals search engine Owner's Manual 3 Securely attach the electrical part cover to the indoor unit and the service panel to dust, water, etc. This symbol indicates the possibility of the outdoor unit are as shown below. Be sure to properties only. s Installation Always perform grounding. ... electrical shock. s The meanings of the symbols used in a fire or electric shock due to the outdoor unit. • If the electrical part cover of the indoor unit and the service panel of injury or damage to follow the instruction. This symbol indicates the possibility of the ...
Owners Manual
Page 22
...Lift the front panel. If clogged with a soft, dry cloth. Maintenance and Service Maintenance and Service Indoor Unit WARNING: Turn the system off before cleaning the indoor unit. Air filter The air filters behind the front grill should be deformed. 3. Re-install the air filter...the filter Filter out slowly Grille bottom NOTICE Clean the filter after stopping the product. 2. Outdoor Unit The heat exchanger coils and panel vents of the outdoor unit should be disconnected before cleaning. After washing with a solution of the followings: • Water hotter...
...Lift the front panel. If clogged with a soft, dry cloth. Maintenance and Service Maintenance and Service Indoor Unit WARNING: Turn the system off before cleaning the indoor unit. Air filter The air filters behind the front grill should be deformed. 3. Re-install the air filter...the filter Filter out slowly Grille bottom NOTICE Clean the filter after stopping the product. 2. Outdoor Unit The heat exchanger coils and panel vents of the outdoor unit should be disconnected before cleaning. After washing with a solution of the followings: • Water hotter...
Service Manual
Page 2
Contents Details of 2003 LG Model Name 3 Functions ...4 Product References ...6 Dimensions ...7 Refrigeration Cycle Diagram 9 Wiring Diagram...10 Operation Details ...11 Display Function ...17 Self-diagnosis Function...17 Installation ...18 Operation ...33 Disassembly of the parts (Indoor Unit 33 2-way, 3-way Valve...35 Cycle Troubleshooting Guide 42 Electronic Control Device...52 Schematic Diagram ...55 Exploded View and Replacement Parts List 57 -2-
Contents Details of 2003 LG Model Name 3 Functions ...4 Product References ...6 Dimensions ...7 Refrigeration Cycle Diagram 9 Wiring Diagram...10 Operation Details ...11 Display Function ...17 Self-diagnosis Function...17 Installation ...18 Operation ...33 Disassembly of the parts (Indoor Unit 33 2-way, 3-way Valve...35 Cycle Troubleshooting Guide 42 Electronic Control Device...52 Schematic Diagram ...55 Exploded View and Replacement Parts List 57 -2-
Service Manual
Page 4
.... Airflow Direction Control • The louver can be set at low speed. Timer : Lights up during the system operation. Functions Indoor Unit Operation ON/OFF by CHAOS Logic • The fan is switched to intermittent or irregular operation • The fan speed is inhibited...Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Indoor Fan Speed Control • High, Med, Low, CHAOS Operation indication Lamps (LED) Signal Receptor Receives the signals from high to low...
.... Airflow Direction Control • The louver can be set at low speed. Timer : Lights up during the system operation. Functions Indoor Unit Operation ON/OFF by CHAOS Logic • The fan is switched to intermittent or irregular operation • The fan speed is inhibited...Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Indoor Fan Speed Control • High, Med, Low, CHAOS Operation indication Lamps (LED) Signal Receptor Receives the signals from high to low...
Service Manual
Page 9
Refrigeration Cycle Diagram • Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGER (EVAPORATOR) GAS SIDE HEAT EXCHANGER (CONDENSER) COMPRESSOR MODEL 9K, 12K (Cooling Only) Pipe size(Diameter:ø) Gas Liquid 1/2" 1/4" Piping ...
Refrigeration Cycle Diagram • Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGER (EVAPORATOR) GAS SIDE HEAT EXCHANGER (CONDENSER) COMPRESSOR MODEL 9K, 12K (Cooling Only) Pipe size(Diameter:ø) Gas Liquid 1/2" 1/4" Piping ...
Service Manual
Page 10
O.L.P BL TERMINAL BLOCK (N) (L) G TO INDOOR UNIT POWER INPUT OUTDOOR WIRING DIAGRAM 3854A30077Z -10- Wiring Diagram (1) Indoor Unit 9K, 12K (Cooling Only Models, Cooling & Heating Models) CAPACITOR C F CN-TRANS TRANSFORMER (2) Outdoor Unit (9K, 12K) BL MAIN P.C.B RD YL T/B 1 BL BL BR ZNR BK MOTOR RD FUSE 3.15A BK RY-COMP 3 4 CN-POWER CN-DC/DC BR BL RD BR BK BL FUSE 2.5A H BR YL BR RSC COMP.
O.L.P BL TERMINAL BLOCK (N) (L) G TO INDOOR UNIT POWER INPUT OUTDOOR WIRING DIAGRAM 3854A30077Z -10- Wiring Diagram (1) Indoor Unit 9K, 12K (Cooling Only Models, Cooling & Heating Models) CAPACITOR C F CN-TRANS TRANSFORMER (2) Outdoor Unit (9K, 12K) BL MAIN P.C.B RD YL T/B 1 BL BL BR ZNR BK MOTOR RD FUSE 3.15A BK RY-COMP 3 4 CN-POWER CN-DC/DC BR BL RD BR BK BL FUSE 2.5A H BR YL BR RSC COMP.
Service Manual
Page 18
... or rain exposure, make sure that heat radiation from ceiling. More than 60cm(24") A Indoor unit B A B Outdoor unit Outdoor unit Oil trap A Indoor unit B In case more than 50cm(19.7"). Indoor unit s Do not have more than 5m(16.4ft) More than 10cm(3.9") More than 70cm(28...") More than 10cm(3.9") More than 50cm(19.7") Outdoor unit Indoor unit CAUTION Install the indoor unit on the wall as possible, allowing a minimum of the unit. veniently routed away. Consult local codes regarding rooftop mounting. 2) Piping length and elevation ...
... or rain exposure, make sure that heat radiation from ceiling. More than 60cm(24") A Indoor unit B A B Outdoor unit Outdoor unit Oil trap A Indoor unit B In case more than 50cm(19.7"). Indoor unit s Do not have more than 5m(16.4ft) More than 10cm(3.9") More than 70cm(28...") More than 10cm(3.9") More than 50cm(19.7") Outdoor unit Indoor unit CAUTION Install the indoor unit on the wall as possible, allowing a minimum of the unit. veniently routed away. Consult local codes regarding rooftop mounting. 2) Piping length and elevation ...
Service Manual
Page 20
... hole at the upper screws. (In this page when making a hole in the wall. 8. 4) Sticking the installation guide map and fixing Indoor unit 1. Make a hole with light power. 5) Preparing work for hanging product) 10mm(0.39") INSTALLATION GU 9. First, Drive the two points of...side. 6. Hang the hole of product with a Ø50mm(1.97") hole core drill. INSTALLATION GUIDE MAP 7. Horizontality INSTALLATION GUIDE MAP Indoor WALL Outdoor 5-7mm (0.2~0.3") -20- Put an Installation Guide Map on this time, Remove the map) (Falling attention) INSTALLATION GUIDE MAP ...
... hole at the upper screws. (In this page when making a hole in the wall. 8. 4) Sticking the installation guide map and fixing Indoor unit 1. Make a hole with light power. 5) Preparing work for hanging product) 10mm(0.39") INSTALLATION GU 9. First, Drive the two points of...side. 6. Hang the hole of product with a Ø50mm(1.97") hole core drill. INSTALLATION GUIDE MAP 7. Horizontality INSTALLATION GUIDE MAP Indoor WALL Outdoor 5-7mm (0.2~0.3") -20- Put an Installation Guide Map on this time, Remove the map) (Falling attention) INSTALLATION GUIDE MAP ...
Service Manual
Page 21
... 3. tion and do flaring work ) Flare nut Copper tube Even length all round Inclined Surface Cracked Uneven damaged thickness 2) Connection of piping-Indoor s Preparing the indoor unit's piping and drain hose for gas leakage is noted to avoid drop- Putting nut on s Remove flare nuts attached to...cut cross sec- Carry out correct flaring work with figure below . Cut the pipes and the cable. s Measure the distance between the indoor and the outdoor unit. Handle "A" Bar Bar Yoke Cone Copper pipe Clamp handle Red arrow mark 5. s If flare is due to put them on pipe/tube...
... 3. tion and do flaring work ) Flare nut Copper tube Even length all round Inclined Surface Cracked Uneven damaged thickness 2) Connection of piping-Indoor s Preparing the indoor unit's piping and drain hose for gas leakage is noted to avoid drop- Putting nut on s Remove flare nuts attached to...cut cross sec- Carry out correct flaring work with figure below . Cut the pipes and the cable. s Measure the distance between the indoor and the outdoor unit. Handle "A" Bar Bar Yoke Cone Copper pipe Clamp handle Red arrow mark 5. s If flare is due to put them on pipe/tube...
Service Manual
Page 22
... hose and the connecting cable. Wrap the insulation material around the connecting portion. s Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Plastic bands Insulation material s Wrap the area which they fit into the rear piping housing section. Drain hose ...within which accommodates the rear piping housing section with vinyl tape Pipe -22- Connection pipe Vinyl tape (wide) Indoor unit pipe Wrap with vinyl tape Indoor unit tubing Flare nut Pipings s Tighten the flare nut with vinyl tape so that dripping from "sweating"(condensation) ...
... hose and the connecting cable. Wrap the insulation material around the connecting portion. s Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Plastic bands Insulation material s Wrap the area which they fit into the rear piping housing section. Drain hose ...within which accommodates the rear piping housing section with vinyl tape Pipe -22- Connection pipe Vinyl tape (wide) Indoor unit pipe Wrap with vinyl tape Indoor unit tubing Flare nut Pipings s Tighten the flare nut with vinyl tape so that dripping from "sweating"(condensation) ...
Service Manual
Page 24
...Over 5mm (2") Cover control Conduit panel Connecting cable Power supply cord -24- Remove the cover control from the indoor unit to the outdoor unit(size of withstanding temperatures up to the corresponding terminals on the conduit panel. 3. NOTE Connector trade size for ... 15A 12K 1ø, 115V 14 18 20A Wiring Diagram Connecting cable(Low voltage) b Indoor Unit Terminal (4P) 1 2 3 4 Outdoor Unit Terminal (6P) 1 2 3 4 L1* 5 L2 6 G Power supply a To branch circuit * L1 is neutral for this unit is 1/2". shows field wiring. 2. Separately wire the high and low voltage line. 3....
...Over 5mm (2") Cover control Conduit panel Connecting cable Power supply cord -24- Remove the cover control from the indoor unit to the outdoor unit(size of withstanding temperatures up to the corresponding terminals on the conduit panel. 3. NOTE Connector trade size for ... 15A 12K 1ø, 115V 14 18 20A Wiring Diagram Connecting cable(Low voltage) b Indoor Unit Terminal (4P) 1 2 3 4 Outdoor Unit Terminal (6P) 1 2 3 4 L1* 5 L2 6 G Power supply a To branch circuit * L1 is neutral for this unit is 1/2". shows field wiring. 2. Separately wire the high and low voltage line. 3....
Service Manual
Page 26
... . Seal a small opening around pipings with gum type sealer. In cases where the outdoor unit is installed above the ground. Drain piping s The drain hose should be routed above the Indoor unit perform the following . Downward slope s Do not make drain piping. In cases where the... Outdoor unit is installed below the indoor unit perform the following . Form the piping by saddle or equivalent. Taping Drain ...
... . Seal a small opening around pipings with gum type sealer. In cases where the outdoor unit is installed above the ground. Drain piping s The drain hose should be routed above the Indoor unit perform the following . Downward slope s Do not make drain piping. In cases where the... Outdoor unit is installed below the indoor unit perform the following . Form the piping by saddle or equivalent. Taping Drain ...
Service Manual
Page 27
... to result in a fire hazard. • Check local electrical codes and any specified wiring instructions or limitations. Wrong wiring can cause the unit to misoperate to the indoor unit 1. CCAAUUTTIIOONN If a power plug is not to be used, provide a circuit breaker between power source and the... the terminal No. Connect the wires to the terminals on the control board individually according to the outdoor unit connection. • Ensure that the color of the wires of indoor unit respectively. (Refer to Wiring diagram on page10.) WARNING • Be sure to refer to the wiring diagram label...
... to result in a fire hazard. • Check local electrical codes and any specified wiring instructions or limitations. Wrong wiring can cause the unit to misoperate to the indoor unit 1. CCAAUUTTIIOONN If a power plug is not to be used, provide a circuit breaker between power source and the... the terminal No. Connect the wires to the terminals on the control board individually according to the outdoor unit connection. • Ensure that the color of the wires of indoor unit respectively. (Refer to Wiring diagram on page10.) WARNING • Be sure to refer to the wiring diagram label...
Service Manual
Page 28
...Pressurize the system to use a stop valve for leaks with charge hoses. Next, test for this purpose. Bubbles indicate a leak. Indoor unit Outdoor unit Manifold valve Pressure gauge Lo Hi Charge hose Nitrogen gas cylinder(in the refrigera- Air Purging 1) Air purging Air and moisture remaining in...manifold valve must always be higher than 150 P.S.I .G. Preparation • Check that both liquid and gas side tubes) between the indoor and outdoor unit must be kept close the cylinder valve when the gauge reading reached 150 P.S.I .G. The "Hi" knob of leaks, relieve ...
...Pressurize the system to use a stop valve for leaks with charge hoses. Next, test for this purpose. Bubbles indicate a leak. Indoor unit Outdoor unit Manifold valve Pressure gauge Lo Hi Charge hose Nitrogen gas cylinder(in the refrigera- Air Purging 1) Air purging Air and moisture remaining in...manifold valve must always be higher than 150 P.S.I .G. Preparation • Check that both liquid and gas side tubes) between the indoor and outdoor unit must be kept close the cylinder valve when the gauge reading reached 150 P.S.I .G. The "Hi" knob of leaks, relieve ...
Service Manual
Page 29
...stem of the pump. Then, run . -29- The operation time for evacuation varies with a vacuum pump. Gas side Liquid side Cap Hexagonal wrench Indoor unit Outdoor unit 4. Required time for about 2~3 sec, and close the "Lo" knob of the piping. (5) If bubbles come out, the pipes have leakage. 3-... release the pressure, then remove the hose. • Replace the flare nut and its bonnet on the indoor unit connection or outdoor unit connections by a soft brush to evacuate the tubing and indoor unit. Soap water method (1) Remove the caps from the 2-way and 3-way valves. (2) Remove the service-...
...stem of the pump. Then, run . -29- The operation time for evacuation varies with a vacuum pump. Gas side Liquid side Cap Hexagonal wrench Indoor unit Outdoor unit 4. Required time for about 2~3 sec, and close the "Lo" knob of the piping. (5) If bubbles come out, the pipes have leakage. 3-... release the pressure, then remove the hose. • Replace the flare nut and its bonnet on the indoor unit connection or outdoor unit connections by a soft brush to evacuate the tubing and indoor unit. Soap water method (1) Remove the caps from the 2-way and 3-way valves. (2) Remove the service-...
Service Manual
Page 33
... tightly.) Panel Front Connector 2. Remove securing screws. - Pull the control box out from the Chassis. - Lift the both lower parts of the parts (Indoor unit) Warning : Disconnect the unit from PWB. - CN-DC/DC CN-UD CN-LR2 CN-TH1 CN-LR1 CN-MOTOR -33- To remove the Control Box. - Before removing the...
... tightly.) Panel Front Connector 2. Remove securing screws. - Pull the control box out from the Chassis. - Lift the both lower parts of the parts (Indoor unit) Warning : Disconnect the unit from PWB. - CN-DC/DC CN-UD CN-LR2 CN-TH1 CN-LR1 CN-MOTOR -33- To remove the Control Box. - Before removing the...
Service Manual
Page 36
... the flare connections for air purging has been charged in the refrigeration pipes, it will be purged. 1. The air in the indoor unit and in the air during Air purging. • Procedure (1) Recheck the piping connections. (2) Open the valve stem of the 2-way valve counterclockwise ...and 3way valves. (8) Check for gas leakage from the 2-way and 3-way valve's stem nuts, and from a gas cylinder. -36- Indoor unit Liquid side Open 2-way valve Outdoor unit Gas side Clsed 3-way valve Service port nut: Be sure, using a torque wrench to tighten the service port nut (after using the...
... the flare connections for air purging has been charged in the refrigeration pipes, it will be purged. 1. The air in the indoor unit and in the air during Air purging. • Procedure (1) Recheck the piping connections. (2) Open the valve stem of the 2-way valve counterclockwise ...and 3way valves. (8) Check for gas leakage from the 2-way and 3-way valve's stem nuts, and from a gas cylinder. -36- Indoor unit Liquid side Open 2-way valve Outdoor unit Gas side Clsed 3-way valve Service port nut: Be sure, using a torque wrench to tighten the service port nut (after using the...
Service Manual
Page 37
... 1.8 kg.m. - Connect the charge hose with the push pin to 15 minutes. (3) Stop operation and wait for gas leakage. -37- Pumping down Indoor unit Liquid side Open 2-Way valve Outdoor unit Gas side Closed 3-Way valve Lo CLOSE CLOSE Purge the air • Procedure (1) Confirm that the gauge ends up indicating 3 to 5kg...
... 1.8 kg.m. - Connect the charge hose with the push pin to 15 minutes. (3) Stop operation and wait for gas leakage. -37- Pumping down Indoor unit Liquid side Open 2-Way valve Outdoor unit Gas side Closed 3-Way valve Lo CLOSE CLOSE Purge the air • Procedure (1) Confirm that the gauge ends up indicating 3 to 5kg...
Service Manual
Page 38
... leakage. (5) Discharge the refrigerant. - After purging the air, use a hexagonal wrench to the service port of 1.8 kg.m. - 1) Re-air purging (Re-installation) Indoor unit Liquid side Closed 2-Way valve Outdoor unit Gas cylinder Gas side Closed 3-Way valve Lo R22 OPEN CLOSE • Procedure (1) Confirm that both the 2-way valve and the 3way...
... leakage. (5) Discharge the refrigerant. - After purging the air, use a hexagonal wrench to the service port of 1.8 kg.m. - 1) Re-air purging (Re-installation) Indoor unit Liquid side Closed 2-Way valve Outdoor unit Gas cylinder Gas side Closed 3-Way valve Lo R22 OPEN CLOSE • Procedure (1) Confirm that both the 2-way valve and the 3way...
Service Manual
Page 39
... higher than 1 kg/cm2G), discharge the refrigerant until the gauge indicates 0 kg/cm2G. - 2) Balance refrigerant of the 2-way, 3-way valves (Gas leakage) Indoor unit Liquid side 2-Way valve Open Outdoor unit Gas side 3-Way valve Open OPEN Lo CLOSE • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the...
... higher than 1 kg/cm2G), discharge the refrigerant until the gauge indicates 0 kg/cm2G. - 2) Balance refrigerant of the 2-way, 3-way valves (Gas leakage) Indoor unit Liquid side 2-Way valve Open Outdoor unit Gas side 3-Way valve Open OPEN Lo CLOSE • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the...