Internal Use Only http://biz.lgservice.com System Indoor Unit R410A SERVICE MANUAL R410A MODEL : ARNU Series URNU Series CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.
Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions............................................................................................................................3 Part 1 General Information .............................................................................................................10 Model Names .............................................................................................................................11 External Appearance ...................
Part 1 General Information 1. Model Names .............................................4 2. External Appearance .................................5 3. Nomenclature .............................................6 Copyright ©2008 LG Electronics. Inc. All right reserved.
Model Names 1. Model Names Category Chassis Name SE Wall Mounted (General) Capacity(Btu/h(kW)) 7k (2.2) 9k (2.8) 12k (3.6) 15k (4.
External Appearance 2.
Nomenclature 3.
Part 2 Indoor Units Ceiling Cassette 1 Way .................................................................................8 2 Way ...............................................................................13 4 Way(1)...........................................................................20 4 Way(2)...........................................................................23 Art Cool Series ART COOL Miror .............................................................30 ART COOL Gallery ..............
Ceiling Mounted Cassette Type (1Way) 1. Functions ......................................................................................9 2. Operation Details........................................................................10 3. Dimensions .................................................................................12 Copyright ©2008 LG Electronics. Inc. All right reserved.
Specification 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature Room temperature control Starting Current Control Indoor Fan Speed Control • Room temperature sensor. (Thermistor) • Maintains the room temperature in accordance with the Setting Temperature. • Indoor fan is delayed for 5 seconds at the starting. • Jet, High, Med, Low, Lolow Soft Dry Operation Mode • Intermittent operation of fan at low speed.
Operation Detail 2. Operation Detail (1) The function of main control ■ Auto Swing Control • This function is to swing the louver up and down automatically. ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.
Operation Detail ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 83 138 32.8 410 344.4 480 198.8 19.1 16.5 131 . 16.4 - 12 939 1070 961.2 860 2 1 173 151 100 56 3 4 30 36 50 83 Gas pipe connection Air suction grill Air discharge grill 1 2 3 4 ø12.7 flare ø6.35 flare Descripition (unit : mm) 76, Seongsan-dong, Changwon City, Gyeongnam, 641-713, Korea www.lgeaircon.com CHASSIS CODE: TJ 2.
Ceiling Mounted Cassette Type (2Way) 1. Functions ....................................................................................14 2. Operation Details........................................................................15 3. Dimensions .................................................................................17 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature Room temperature control Starting Current Control Indoor Fan Speed Control • Room temperature sensor. (Thermistor) • Maintains the room temperature in accordance with the Setting Temperature. • Indoor fan is delayed for 5 seconds at the starting. • Jet, High, Med, Low, Lolow Soft Dry Operation Mode • Intermittent operation of fan at low speed.
Operation Detail 2. Operation Detail (1) The function of main control ■ Auto Swing Control • This function is to swing the louver up and down automatically. ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.
Operation Detail ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 17 - 3 4 1050 889.2 830 2 1 275 69.5 28.5 126.5 B TL 225 A A B 47.9 Air discharge grill 4 (18k) ø12.7, (24k)ø15.88 (18k) ø6.35, (24k)ø9.52 Descripition (unit : mm) 76, Seongsan-dong, Changwon City, Gyeongnam, 641-713, Korea www.lgeaircon.com CHASSIS CODE: TL 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1.
Ceiling Mounted Cassette Type (4Way) (1) 1. Functions ....................................................................................19 2. Operation Details........................................................................20 3. Dimensions .................................................................................22 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature Room temperature control Starting Current Control Indoor Fan Speed Control • Room temperature sensor. (Thermistor) • Maintains the room temperature in accordance with the Setting Temperature. • Indoor fan is delayed for 5 seconds at the starting. • Jet, High, Med, Low, Lolow Soft Dry Operation Mode • Intermittent operation of fan at low speed.
Operation Detail 2. Operation Detail (1) The function of main control ■ Auto Swing Control • This function is to swing the louver up and down automatically. ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.
Operation Detail ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
- 22 - 670 670 670 6 5 269 570 4 521 30 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 120.4 40 90 3 110 110 450 570 2 Power supply connection Air discharge grill Air suction grill 3 4 5 6 Unit size(7k, 9k, 12k, 18k):ø12.7 CHASSIS CODE: TE 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
Ceiling Mounted Cassette Type (4Way) (2) 1. Functions ....................................................................................24 2. Operation Details........................................................................25 3. Dimensions .................................................................................27 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature Room temperature control Starting Current Control Indoor Fan Speed Control • Room temperature sensor. (Thermistor) • Maintains the room temperature in accordance with the Setting Temperature. • Indoor fan is delayed for 5 seconds at the starting. • Jet, High, Med, Low, Lolow Soft Dry Operation Mode • Intermittent operation of fan at low speed.
Operation Detail 2. Operation Detail (1) The function of main control ■ Auto Swing Control • This function is to swing the louver up and down automatically. ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.
Operation Detail ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
- 27 - 54 500(Air outlet hole) 734 950 292 5 4- 0 25 618 R2 6 500(Air outlet hole) 618 950 671 2 204 154 108 60 1 840 840 787 787 804 80 A 62 4 R35 Air discharge grill Air suction grill 5 6 (unit : mm) Unit size(24k, 28k):ø15.88 Unit size(24k, 28k):ø9.52 Descripition CHASSIS CODE: TP 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
5 6 1 A direction View Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 28 3 4 62 Air suction grill 6 Note Air discharge grill 5 Drain pipe connection 3 Power supply connection Gas pipe connection 2 4 Liquid pipe connection Name 1 Number (unit : mm) Unit size(36k):ø15.88 Unit size(36k):ø9.52 Descripition ARNU36GTN*2 Ceiling Cassette 4-way CHASSIS CODE: TN 2.
5 6 2 1 840 A A direction View Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 29 3 4 R35 126 Power supply connection Air discharge grill Air suction grill 3 4 5 6 (unit : mm) Unit size(48k):ø15.88 Unit size(42k):ø9.52 Descripition CHASSIS CODE: TM 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
Art Cool Type(Mirror) 1. Functions ....................................................................................31 2. Operation Details........................................................................32 3. Dimensions .................................................................................39 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 sec at the starting. Indoor Fan Speed Control • High, Med, Low, CHAOS Operation indication Lamps (LED) Signal Receptor Receives the signals from the remote control.
Operation Details 2. Operation Details Function of Controls DISPLAY 1) High quality LCD remote controller supplied Operation Indicator • On while in appliance operation, off while in appliance pause Timer Indicator • On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled Defrost Indicator • Off except when hot start during heating mode operation or while in defrost control. Plasma Indicator • On while in plasma mode, off while plasma mode is canceled.
Operation Details ■ Healthy Dehumidification Mode • When the dehumidification operation input by the remote controller is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C 18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C Intake Air Temp < 18°C => 18°C • While in compressor off, the indoor fan repeats low airflow speed and pause.
Operation Details ■ Fuzzy Operation (Outdoor unit H/P Model) • When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off, the operation mode is selected. • When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air temp at that moment as follows.
Operation Details • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.
Operation Details ■ Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation is carried out according to the set time. ■ Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in appliance operation, the operation of the appliance stops. • While the appliance is on pause, the sleep timer mode cannot be input.
Operation Details - State of Operation ON/OFF - Operation Mode/Setting Temp/Selected Airflow Speed - Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour) ■ Forced Operation (Outdoor unit C/O Model) • To operate the appliance by force in case that the remote controller is lost, the forced operation button is on the main unit of the appliance to operate the appliance in the standard conditions. • Press the forced operation button, the forced operation is carried out.
Operation Details ■ Buzzer Sounding Operation • When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds. • When the appliance-pause key is input by the remote controller, the long “beep—” sounds. ■ Air Cleaner Operation • When an air cleaner function is selected during Air Conditioner operation - Plasma air cleaner function will be operated while in any operation mode with selecting the function.
165 282 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 39 567 915 H W 169 1 51 2 282 D Note 282 H Descripition (unit : mm) 169 D (unit : mm) CHASSIS CODE: SE 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 567 1170 H W 304 1 - 40 - Air discharge grill Air suction grill 1 2 315 H Descripition (unit : mm) 173 D (unit : mm) CHASSIS CODE: S3 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
ArtCoolGallery 1. Functions ....................................................................................42 2. Operation Details........................................................................43 3. Dimensions .................................................................................50 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 sec at the starting. Indoor Fan Speed Control • High, Med, Low, CHAOS Operation indication Lamps (LED) Signal Receptor Receives the signals from the remote control.
Operation Details 2. Operation Details Function of Controls DISPLAY 1) High quality LCD remote controller supplied Operation Indicator • On while in appliance operation, off while in appliance pause Timer Indicator • On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled Defrost Indicator • Off except when hot start during heating mode operation or while in defrost control. Plasma Indicator • On while in plasma mode, off while plasma mode is canceled.
Operation Details ■ Healthy Dehumidification Mode • When the dehumidification operation input by the remote controller is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C 18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C Intake Air Temp < 18°C => 18°C • While in compressor off, the indoor fan repeats low airflow speed and pause.
Operation Details ■ Fuzzy Operation (Outdoor unit H/P Model) • When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off, the operation mode is selected. • When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air temp at that moment as follows.
Operation Details • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.
Operation Details ■ Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation is carried out according to the set time. ■ Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in appliance operation, the operation of the appliance stops. • While the appliance is on pause, the sleep timer mode cannot be input.
Operation Details - State of Operation ON/OFF - Operation Mode/Setting Temp/Selected Airflow Speed - Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour) ■ Forced Operation (Outdoor unit C/O Model) • To operate the appliance by force in case that the remote controller is lost, the forced operation button is on the main unit of the appliance to operate the appliance in the standard conditions. • Press the forced operation button, the forced operation is carried out.
Operation Details ■ Buzzer Sounding Operation • When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds. • When the appliance-pause key is input by the remote controller, the long “beep—” sounds. ■ Air Cleaner Operation • When an air cleaner function is selected during Air Conditioner operation - Plasma air cleaner function will be operated while in any operation mode with selecting the function.
1 Fix Hole 2 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 500 Pipe Hole W Hanger Hole 1 H D 1 Air discharge grill Air suction grill 1 2 - 50 - 600 H Descripition (unit : mm) 146 D (unit : mm) 76, Seongsan-dong, Changwon City, Gyeongnam, 641-713, Korea www.lgeaircon.com CHASSIS CODE: SF 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1.
Ceiling Concealed Duct Type (Low static) 1. Funtions ......................................................................................52 2. Operation Details........................................................................53 3. Dimensions .................................................................................56 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Funtions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Maintains the room temperature in accordance with the Setting Temperature. Room temperature control Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. • High, Med, Low Indoor Fan Speed Control Soft Dry Operation Mode Auto Restart • Room temperature sensor. (Thermistor) • Intermittent operation of fan at low speed.
Operation Details 2. Operation Details (1) The function of main control ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control. ■ Cooling Mode Operation • When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following.
Operation Details ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Operation Details ■ Hot-Start Control • The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C. • The operation diagram is as following.
575 18 - 56 - 154 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 383 18 D B A C 6 5 13 4 3 216 24 161 14 65 60 190 1072 794 D Descripition (unit : mm) 1131 856 C Unit size(7k,9k,12k,18k):ø6.35 Unit size(24k):ø9.52 Unit size(7k,9k,12k,18k):ø12.7 Unit size(24k):ø15.88 1008 728 B (unit: mm) CHASSIS CODE: B1/B2 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1.
Ceiling Concealed Duct Type (Built in) 1. Funtions ......................................................................................58 2. Operation Details........................................................................59 3. Dimensions .................................................................................62 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Funtions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Maintains the room temperature in accordance with the Setting Temperature. Room temperature control Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. • High, Med, Low Indoor Fan Speed Control Soft Dry Operation Mode Auto Restart • Room temperature sensor. (Thermistor) • Intermittent operation of fan at low speed.
Operation Details 2. Operation Details (1) The function of main control ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control. ■ Cooling Mode Operation • When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following.
Operation Details ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Operation Details ■ Hot-Start Control • The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C. • The operation diagram is as following.
- 62 - A A B C B C Btu/h 7,9,12k 18,24k A 820 1100 With Suction Grille & Suction Canvas 575 A B3/B4 With Suction Grille & Suction Canvas 250 618 388 B 359 359 B C 274 42~250 274 42~250 A 910 1188 A 821 1100 PBSGB30 PBSGB40 PBSC30 PBSC40 C 56 56 With Suction Grille 1 3 4 5 Name 2 Air discharge Air suction (unit : mm) Unit size(7k,9k,12k,18k):ø6.35 Unit size(24k):ø9.52 Unit size(7k,9k,12k,18k):ø12.7 Unit size(24k):ø15.
Ceiling Concealed Duct Type (High Static) 1. Funtions ......................................................................................64 2. Operation Details........................................................................65 3. Dimensions .................................................................................68 Copyright ©2008 LG Electronics. Inc. All right reserved.
Funtion 1. Funtions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Maintains the room temperature in accordance with the Setting Temperature. Room temperature control Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. • High, Med, Low Indoor Fan Speed Control Soft Dry Operation Mode Auto Restart • Room temperature sensor. (Thermistor) • Intermittent operation of fan at low speed.
Operation Details 2. Operation Details (1) The function of main control ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control. ■ Cooling Mode Operation • When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following.
Operation Details ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Operation Details ■ Hot-Start Control • The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 22°C. • The operation diagram is as following.
7. 5 R3 60 114 450 260 47 355 158 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 68 - 450 20 175 75 21 49 64 24 243 5 6 882 212 882 750 87 932 745 243 119 65 108 30 115 4 133 47 1 2 100 50 70 260 29 51 3 123 140 48 52 165 31 (unit : mm) Unit size(7k,9k,12k,18k):ø6.35 Unit size(24k):ø9.52 Unit size(7k,9k,12k,18k):ø12.7 Unit size(24k):ø15.88 Descripition CHASSIS CODE: BH 2.
- 69 - ø1 0 0 60 152 20 298 220 23 186 450 232 49 243 5 6 1,182 232 1,182 830 87 1,230 243 232 115 108 29 75 87 355 158 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 113 1,043 4 450 1 100 50 2 261 165 3 122 140 47 53 32 Unit size(28k,36k,42k):ø15.88 Unit size(28k,36k,42k):ø9.52 Descripition (unit : mm) CHASSIS CODE: BG 2.
- 70 - R6 0 60 198 312 380 50 215 5 279 6 1,230 241 1,004 118 1,284 1,230 1,092 279 215 120 114 4 2 90 1 135 190 260 115 101 83 Air suction 6 (unit : mm) Unit size(48k):ø15.88 Unit size(48k):ø9.52 Descripition CHASSIS CODE: BR 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
- 71 - 460 460 688 20 440 318 293 5 329 6 1,562 320 1,220 1,562 1,622 1,396 329 115 688 30 560 64 290 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 161 4 358 68 18 109 58 122 60 70 64 Air discharge Air suction 5 6 (unit : mm) Unit size(76k):ø19.05 Unit size(96k):ø22.2 Unit size(76k,96k):ø9.52 Descripition CHASSIS CODE: B8 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1.
Wall Mountedd Type 1. Functions ....................................................................................73 2. Operation Details........................................................................74 3. Dimensions .................................................................................81 Copyright ©2008 LG Electronics. Inc. All right reserved.
Functions 1. Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting temperature Starting Current Control • Indoor fan is delayed for 5 sec at the starting. Indoor Fan Speed Control • High, Med, Low, CHAOS Operation indication Lamps (LED) Signal Receptor Receives the signals from the remote control.
Operation Details 2. Operation Details Function of Controls DISPLAY (1) High quality LCD remote controller supplied Operation Indicator • On while in appliance operation, off while in appliance pause Timer(on/off) and Sleep timer Indicator • On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled Defrost Indicator • Off except when hot start during heating mode operation or while in defrost control.
Operation Details ■ Healthy Dehumidification Mode • When the dehumidification operation input by the remote controller is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C 18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C Intake Air Temp < 18°C => 18°C • While in compressor off, the indoor fan repeats low airflow speed and pause.
Operation Details 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp<18°C => 18°C • When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.
Operation Details • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.
Operation Details ■ Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation is carried out according to the set time. ■ Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in appliance operation, the operation of the appliance stops. • While the appliance is on pause, the sleep timer mode cannot be input.
Operation Details - Operation Mode/Setting Temp/Selected Airflow Speed - Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour) ■ Forced Operation • Operation procedures when the remote control can't be used. • The operation will be started if the power button is pressed. • If you want to stop operation, re-press the button. Cooling Model Operating mode Indoor Fan Speed Setting Temperature Cooling High 22°C Heat pump Model Room Temp. ≥ 24°C 21°C ≤ Room Temp. < 24°C Room Temp.
Operation Details ■ Air Cleaner Operation • When an air cleaner function is selected during Air Conditioner operation - Plasma air cleaner function will be operated while in any operation mode with selecting the function. - The function is to be stopped while it is operating with selecting the function. • When an air cleaner function is selected during operation off - The function will be only operated. • When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.
Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 567 895 2 1 Air discharge grill Air suction grill 1 2 - 81 - 282 H Descripition (unit : mm) 165 D (unit : mm) 282 76, Seongsan-dong, Changwon City, Gyeongnam, 641-713, Korea www.lgeaircon.com CHASSIS CODE: SE 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
804 1,090 2 1 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 82 - Air discharge grill Air suction grill 1 2 300 H Descripition (unit : mm) 178 D (unit : mm) CHASSIS CODE: S5 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
Ceiling & Floor Ceiling Suspended 1. Funtions ......................................................................................84 2. Operation Details........................................................................85 3. Dimensions .................................................................................88 Copyright ©2008 LG Electronics. Inc. All right reserved.
Function 1. Function Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Maintains the room temperature in accordance with the Setting Temperature. Room temperature control Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. • High, Med, Low Indoor Fan Speed Control Soft Dry Operation Mode Auto Restart • Room temperature sensor. (Thermistor) • Intermittent operation of fan at low speed.
Operation Details 2. Operation Details (1) The function of main control ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control. ■ Cooling Mode Operation • When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following.
Operation Details ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Operation Details ■ Hot-Start Control • The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C. • The operation diagram is as following.
Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 88 Air suction grill 587 Air discharge grill 900 1 24 2 490 Air discharge grill Air suction grill 1 2 490 H Descripition (unit : mm) 200 D (unit : mm) CHASSIS CODE: VE 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
950 800 1 2 41 650 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 89 - 650 H Descripition (unit : mm) 220 D (unit : mm) CHASSIS CODE: VJ 2. Unit shall be grounded in accordance with the local regulations or applicable national codes. 1. Unit should be installed in compliance with the installation manual in the product box.
Floor Standing Type 1. Function ......................................................................................91 2. Operation Details........................................................................92 3. Dimensions .................................................................................95 Copyright ©2008 LG Electronics. Inc. All right reserved.
Function 1. Function Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Maintains the room temperature in accordance with the Setting Temperature. Room temperature control Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. • High, Med, Low Indoor Fan Speed Control Soft Dry Operation Mode Auto Restart • Room temperature sensor. (Thermistor) • Intermittent operation of fan at low speed.
Operation Details 2. Operation Details (1) The function of main control ■ Soft-Dry Operation • The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control. ■ Cooling Mode Operation • When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following.
Operation Details ■ Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Operation Details ■ Hot-Start Control • The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C. • The operation diagram is as following.
- 95 - 148.3 978 794 2 1067 13 148.3 1 635 70 20.4 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 62.8 1067 190 161 203 14 Air discharge grill Air suction grill 1 2 639 635 H Descripition (unit : mm) 190 203 D (unit : mm) ARNU07GCEU2 ARNU09GCEU2 ARNU12GCEU2 ARNU15GCEU2 76, Seongsan-dong, Changwon City, Gyeongnam, 641-713, Korea www.lgeaircon.com CHASSIS CODE: CE 2.
21.4 639 - 96 - 148.3 70 1256 1098 1072 1048.4 1345 2 203 635 109.8 30 148.3 70 81.4 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 145 1 190 161 203 14 Air suction grill 2 639 635 H Descripition (unit : mm) 190 203 D (unit : mm) ARNU18GCFU2 ARNU24GCFU2 76, Seongsan-dong, Changwon City, Gyeongnam, 641-713, Korea www.lgeaircon.com CHASSIS CODE: CF 2.
Part 3 Trouble shooting guide Copyright ©2008 LG Electronics. Inc. All right reserved.
Trouble shooting guide Self-diagnosis function .....................................................................99 Copyright ©2008 LG Electronics. Inc. All right reserved.
Self-diagnosis function Self-diagnosis function Self-Diagnosis Function Error Indicator • This function indicates types of failure in self-diagnosis and occurrence of failure for air condition. • Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as shown in the table. • If more than two troubles occur simultaneously, lower number of error code is first displayed.
Self-diagnosis function Error No. Error Type Error Point 01 Indoor unit air sensor error 02 Indoor unit pipe inlet sensor error 06 Indoor unit pipe outlet sensor error Main Reasons 1. Indoor unit PCB wrong connection Indoor unit sensor is 2. Indoor unit PCB failure open/short 3.
Self-diagnosis function Error No. 03 Error Type No transmission between cabled remote controller & indoor unit Error Point Main Reasons 1. Remote controller fault The remote controller did not receive the sig- 2. Indoor unit PCB fault nal from indoor unit 3. Connector fault, Wrong connection during specific time 4.
Self-diagnosis function Error No. 04 Error Type Error Point Main Reasons Float switch is open due to 1. Drain pump/float switch fault rising of condensate water 2. Improper drain pipe location, cloglevel because of drain ging of drain pipe pump fault or drain pipe 3.
Self-diagnosis function float *** Indoor PCB drain pump connector A:Point to check rotating (Check input of 220V) (Marked as CN-DPUMP) Float switch connector Float switch Housing (CN-FLOAT) [***] Standard of drain pipe head height / slope MAX 450 Copyright ©2008 LG Electronics. Inc. All right reserved.
Self-diagnosis function Error No. 05 Error Type Error Point Main Reasons 1. Auto addressing is not done 2. transmission cable is not connected 3. Short circuit of transmission cable 4. Indoor unit transmission circuit fault No signal transmission 5. Outdoor unit transmission circuit fault between indoor & outdoor 6. Not enough distance between power and transunits.
Self-diagnosis function Error No. Error Type Error Point Indoor unit outlet pipe temperature sensor error 06 Error No. Error Type Refer to CH02 Indoor unit outlet pipe temperature sensor open or short Error Point All Indoor units are not running in same mode 07 Main Reasons The Indoor units started later are operated in different mode from earlier one. Main Reasons 1. Indoor units are in different mode 2. PCB fault 3.
Self-diagnosis function **** After replacing the indoor unit PCB, make sure to be done to do Auto addressing and input the address of central control ***** If ODU Dry Contact function is set , different mode operation error may be occurred because the operation mode is fixed. Error No. 09 Error Type Error Point Main Reasons 1. Error developed in transmission between the micro- processor and the EEPROM on the surface of the PCB. 2.
Self-diagnosis function Error No. 10 Error Type Indoor unit BLDC fan motor failure Error Point Main Reasons Indoor BLDC fan motor feedback signal is absent (for 50 sec.) 1. Motor connector connection fault 2. Indoor PCB fault 3.
Self-diagnosis function Error No. Error Type Error Point Indoor unit transmission error 11 Main Reasons Indoor unit doesn’t get sig- 1. Indoor 485 transmission PCB fault nal from ODU for 3 minutes 2. After PCB replacing, auto addressing continuously was not done ■ Error diagnosis and countermeasure flow chart After ODU main PCB reset, error code disappears? No After Auto addressing, error code disappears? Yes No Replace indoor unit 485 transmission PCB Yes END Copyright ©2008 LG Electronics.
P/NO : MFL50459501 APRIL, 2008