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LG LMU369HV manual

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Bom manual de uso

As regras impõem ao revendedor a obrigação de fornecer ao comprador o manual com o produto LG LMU369HV. A falta de manual ou informações incorretas fornecidas ao consumidor são a base de uma queixa por não conformidade do produto com o contrato. De acordo com a lei, pode anexar o manual em uma outra forma de que em papel, o que é frequentemente utilizado, anexando uma forma gráfica ou manual electrónicoLG LMU369HV vídeos instrutivos para os usuários. A condição é uma forma legível e compreensível.

O que é a instrução?

A palavra vem do latim "Instructio" ou instruir. Portanto, no manual LG LMU369HV você pode encontrar uma descrição das fases do processo. O objetivo do manual é instruir, facilitar o arranque, a utilização do equipamento ou a execução de determinadas tarefas. O manual é uma coleção de informações sobre o objeto / serviço, um guia.

Infelizmente, pequenos usuários tomam o tempo para ler o manual LG LMU369HV, e um bom manual não só permite conhecer uma série de funcionalidades adicionais do dispositivo, mas evita a formação da maioria das falhas.

Então, o que deve conter o manual perfeito?

Primeiro, o manual LG LMU369HV deve conte:
- dados técnicos do dispositivo LG LMU369HV
- nome do fabricante e ano de fabricação do dispositivo LG LMU369HV
- instruções de utilização, regulação e manutenção do dispositivo LG LMU369HV
- sinais de segurança e certificados que comprovam a conformidade com as normas pertinentes

Por que você não ler manuais?

Normalmente, isso é devido à falta de tempo e à certeza quanto à funcionalidade específica do dispositivo adquirido. Infelizmente, a mesma ligação e o arranque LG LMU369HV não são suficientes. O manual contém uma série de orientações sobre funcionalidades específicas, a segurança, os métodos de manutenção (mesmo sobre produtos que devem ser usados), possíveis defeitos LG LMU369HV e formas de resolver problemas comuns durante o uso. No final, no manual podemos encontrar as coordenadas do serviço LG na ausência da eficácia das soluções propostas. Atualmente, muito apreciados são manuais na forma de animações interessantes e vídeos de instrução que de uma forma melhor do que o o folheto falam ao usuário. Este tipo de manual é a chance que o usuário percorrer todo o vídeo instrutivo, sem ignorar especificações e descrições técnicas complicadas LG LMU369HV, como para a versão papel.

Por que ler manuais?

Primeiro de tudo, contem a resposta sobre a construção, as possibilidades do dispositivo LG LMU369HV, uso dos acessórios individuais e uma gama de informações para desfrutar plenamente todos os recursos e facilidades.

Após a compra bem sucedida de um equipamento / dispositivo, é bom ter um momento para se familiarizar com cada parte do manual LG LMU369HV. Atualmente, são cuidadosamente preparados e traduzidos para sejam não só compreensíveis para os usuários, mas para cumprir a sua função básica de informação

Índice do manual

  • Página 1

    Multi Air Conditioner SVC MANUAL(General) MODEL : Multi-Inverter Type CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel. Internal Use Only http://biz.lgservice.com[...]

  • Página 2

    - 1 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Air Conditioner Service Manual CONTENTS Part 1 General Information .........................................................................................................2 1. Safety Precautions .............................[...]

  • Página 3

    - 2 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1. Safety Precautions ............................................................................................................3 2. Model Line Up ............................................................................[...]

  • Página 4

    Part 1 General Information - 3 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1. Safety Precautions 1.1 Cautions in Repair To prevent injury to the user or other people and property damage, the following instructions must be followed. ■ Incorrect operation due to ignoring i[...]

  • Página 5

    Part 1 General Information - 4 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Do not turn on the breaker under condition that front panel and cabinet are removed. Be sure to earth the air conditioner with an earthing conductor connected to the earthing terminal. Conduct repai[...]

  • Página 6

    Part 1 General Information - 5 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1.2 Inspections after Repair Check to see if the parts are mounted correctly and wires are connected. Improper installation and connections can cause an electric shock or an injury . Check the insta[...]

  • Página 7

    2. Model Line Up Part 1 General Information - 6 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.1 Indoor units 2.64 (9) 5.28 (18) 3.52 (12) ART COOL Category Type LIBERO Model names Capacity, kW(kBtu/h Class) Chassis Wall mounted Ceiling cassette SB SC SE S8 TR TQ AMNW09GDBL[...]

  • Página 8

    Part 1 General Information 3. Nomenclature 3.1 Indoor Unit(Global) 3.2 Outdoor Unit(Global) AMN W G 09 E DL 0 Serial number A2U W 3 18 F A 0 Electrical rating Indicates that this is multi system indoor unit using R410A Model type H : Heat pump W : DC Inverter heat pump Ex) 7,000 Btu/h Class → '07', 18,000 Btu/h Class → '18' [...]

  • Página 9

    - 8 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 1. List of Functions & Controls ..........................................................................................9 2. Air flow .....................................................[...]

  • Página 10

    - 9 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 1. List of Functions & Controls 1.1 Description of Functions/Controls Auto swing (left & right) Optional Auto swing (up & down) Optional Chaos swing (up & down) Optional Airflow[...]

  • Página 11

    Network Solution (LGAP) Optional PDI (Power Distribution Indicator) Optional PI 485 Optional Zone control Optional Low ambient operation Space Control Optional Auto Elevation Optional Defrost / Deicing High pressure switch Optional Low pressure switch Optional Phase protection Optional Restart delay Optional (3-minutes) Self diagnosis Soft start Op[...]

  • Página 12

    - 11 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls * Some of functions are slightly different depending upon models, refer individual function table on "PART 2. indoor units". ** For ceiling concealed duct models, auto-run function o[...]

  • Página 13

    - 12 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 2. Air flow 2.1 Auto swing (left & right) Right Left 110 ° ~ 120 ° Open Close 110 ° ~ 120 ° Mode2 Mode3 Mode4 Mode5 Mode6 Mode7 Mode8 Mode9 OPEN CLOSED 7~8 ° 110~120 ° • By the hor[...]

  • Página 14

    - 13 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 2.4 Air flow step • Indoor fan motor control have 6 steps. • Air volume is controlled "SH", "H", "Med", Low" by remote controller. • "LL" ste[...]

  • Página 15

    - 14 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 3.1 PLASMA Air Purifying System The PLASMA Air Purifying System not only removes microscopic contaminants and dust, but also removes house mites, pollen, and pet fur to help prevent allergic d[...]

  • Página 16

    - 15 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 4.1 External pressure setting for 4. Installation Functions (E.S.P . Control) provide required constant air flow rate irrespective of E.S.P . charge. (1) Open the rear cover of the wired remot[...]

  • Página 17

    - 16 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 4.2 How to Set E.S.P? Out door Room Temp Total on Central Run Defrost Preheat PQRCUCS0C FAN SPEED MODE Lo Med 100 Setting the Low wind to 210 Setting the Medium wind to 175 TEMP TEMP This Func[...]

  • Página 18

    - 17 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls [ Notes ] 1. To get the desired Airflow & E.S.P. combination from the table set the matching value from the table. Value other than that in table will not give the combinations of airflow [...]

  • Página 19

    - 18 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 5.1 Hot start • When heating is started, the indoor fan is stopped or very slow to prevent the cold air carry out • When the temp. of heat exchanger reach 30°C(model by model), indoor fan[...]

  • Página 20

    - 19 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 6. Convenience Functions & Controls 6.1 Auto cleaning operation • Function used to perform Self Cleaning to prevent the Unit from Fungus and bad odor. • Used after the Cooling Operatio[...]

  • Página 21

    - 20 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 6.2 Auto Operation (Fuzzy Operation) • 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 sele[...]

  • Página 22

    - 21 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 6.2.3 Fuzzy Operation for Heating • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3.5°F(3°C) or more above the setting temp, the compressor is tu[...]

  • Página 23

    - 22 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 2 Functions & Controls 6.4 Child Lock Function 6.5 Forced operation • To operate the appliance by force in case when the remote control is lost, the forced operation selection switch is on the main unit of the app[...]

  • Página 24

    - 23 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 6.6 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 control while in appliance operation, the operation of the appliance stops. • While the appliance[...]

  • Página 25

    - 24 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 3. Control logic 1. Compressor .................................................................................................................. ....25 2. Step(frequency) control ............................................[...]

  • Página 26

    - 25 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic Basic principle is to control the rpm of the motor by changing the working frequency of the compressor. Three phase voltage is supplied to the motor and the time for which the voltage will supplied is co[...]

  • Página 27

    Part 3 Control logic - 26 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.1 Frequency control Frequency that corresponds to each rooms capacity will be determined according to the difference in the temperature of each room and the temperature set by the remote controller. Th[...]

  • Página 28

    Part 3 Control logic - 27 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1. At the starting (outdoor is powered on,indoor is not) reversing valve continues OFF(cooling). 2. For the cooling and defrosting operation :valve OFF, for the heating operation :valve ON 3. Method of c[...]

  • Página 29

    Part 3 Control logic - 28 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1) There can be two situations a) Sensor is failed (error code for sensor failure will be generated) b) Abnormal high temperature discharge temperature (error code for high discharge will be generated) B[...]

  • Página 30

    - 29 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 5.1 Function Controlling total current to protect power semiconductor devices from burn-out by the low current (including connecting mistake) and over current. Operating process 1. Detection : check the [...]

  • Página 31

    - 30 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 6.1 Function Working of outdoor fan are different in different models. Some models are single fan some are two fan type. 6.2 Operating process Control logic of outdoor fan depends on outdoor temperature [...]

  • Página 32

    - 31 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 7.1 Function :These are about the control of compressor, fan of outdoor unit, reversing valve, LEV. 7.2 Starting to the defrosting operation A) Defrost operation will be start when all the conditions bel[...]

  • Página 33

    - 32 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 8.1 Control of LEV opening 1. LEV openings have a controllable ranges 70 (option) to 460 (option) pulse in both condition of cooling and heating. 2. Products do not be operated before initializing of LEV[...]

  • Página 34

    - 33 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 8.2 Starting control 1) Only 1 LEV will be operate as below and others are closed fully. 2) Starting control does not use the time when the system operate with partial load after (example) after finishin[...]

  • Página 35

    - 34 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 1) When the accumulated compressor running time is over 3 hr.(option), oil restoring operation is made for 3 minutes. If itʼs on the way of compressor starting,itʼs made after the starting. 2) Accumula[...]

  • Página 36

    - 35 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Part 3 Control logic 1 1.1 Function : Power module failure protection by checking the temperature of heat sink. There is a temperature sensor for checking the heat sink temperature. 1 1.2 Heat sink sensor failure error Short[...]

  • Página 37

    - 36 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 4. T est Run 1. Check before T est Run .....................................................................................................37 2. T est Run Flow chart .........................................................[...]

  • Página 38

    - 37 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 4. T est Run Check to see whether there is any refrigerant leakage, and check whether the power or transmission cable is connected properly. Check liquid pipe and gas pipe valves are fully opened. NOTE : Be sure to tighten c[...]

  • Página 39

    - 38 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 4. T est Run Is cold air discharged for more than 3 minutes ? START Test operation for indoor unit Operation mode change to Heating mode Operate the unit in cooling mode. Does Test operation start? Refer to part4, 6 Electric[...]

  • Página 40

    - 39 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 4. T est Run 3. T est Runing 3.1 PRECAUTIONS IN TEST RUN • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. CAUTION: ① For test run, carry ou[...]

  • Página 41

    - 40 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 1. Self-diagnosis Function .................................................................................................41 2. Pump Down ...............................................................[...]

  • Página 42

    - 41 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 1. Self-diagnosis Function 1.1 Error Indicator (Indoor) Ceiling Cassette T ype Display The number of times to blink = Error code 10 degrees 1 degrees Display ed No . = Error code Standard/Artcool Mirror [...]

  • Página 43

    - 42 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 1.3 Error Indicator (Outdoor) Outdoor Error Ex) Error 21 (DC Peack) 1 Time 1 Time 1 Time 2 Times 2 Times 2 Times 1 Sec. 2 Sec. 2 Sec. 1 Sec. 1 Sec. LED01G (RED) LED02G (GREEN) Error Contents LED01G/M LED[...]

  • Página 44

    - 43 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the open position. – Remove the valve stem caps and confirm that the valve stems are in the raised position. – Be sure to use[...]

  • Página 45

    - 44 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting • Procedure (1) Connect the vacuum pump to the center hose of charge set center hose (2) Evacuation for approximately one hour. – Confirm that the gauge needle has moved toward 0.8Torr. (3) Close the[...]

  • Página 46

    - 45 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting Lo Charging cylinder Outdoor unit Indoor unit Liquid side Gas side Open 3-Way valve 3-Way valve OPEN Open Check valve (1) Vacuum Gage • Procedure (1) Connect the charge hose to the charging cylinder. ?[...]

  • Página 47

    - 46 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting T rouble analysis 1. Check temperature difference between intake and discharge air, and check for the operating current too. Case Symptom Supposed Caused Temp. difference : approx. 0°C Current : less th[...]

  • Página 48

    - 47 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 6.1 The Product doesn ’ t operate at all The operation check of the Indoor P.C.B. Ass'y Procedure 1) The input voltage of power mod- ule. 2) The output voltage of power mod- ule. 4) IC04D(7805) 5)[...]

  • Página 49

    - 48 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 6.2 The Product doesn't operate with the remote controller Turn on the main power Yes No A "Beeping" sound is made from the indoor unit * Refer to 10.1 * Check the voltage of power (AC230V[...]

  • Página 50

    - 49 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting Turn on the main power. When in air circulation mode, compressor/outdoor fan is stopped. Turn off main power. Check the electrical wiring diagram of Outdoor side. Check the open or short of connecting wi[...]

  • Página 51

    - 50 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 6.4 When indoor Fan does not operate. Check the SSR high speed operation by remote control. (the Indoor Fan Motor is connected) Turn off main power. Check the connection of CN-FAN. Check the Fan Motor. C[...]

  • Página 52

    - 51 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting • Confirm that the vertical louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the vertical louver with hands ⇒ Normal • Check the conne[...]

  • Página 53

    - 52 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting 6.6 T roubleshooting Indoor Error Ω 10k Ω Check the resistance Check the voltage V 2.5Vdc 01 02 06 Indoor air sensor Indoor inlet pipe sensor Indoor outlet pipe sensor • Open / Short • Soldered poo[...]

  • Página 54

    - 53 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting Check the Volt. Indoor Unit V 12Vdc 12V S GND Check the Volt. Wired R/C V 12Vdc 12V S GND CN-REMO 03 Communication Wired R/C • Open / Short • Wrong connection • Connection of wire • Main PCB Volt[...]

  • Página 55

    - 54 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. T rouble Shooting Check the resistance Ω 0 Ω CN Float CN-Float CN-D/PUMP 04 Drain pump / Float switch • Float switch Open. (Normal : short) • The connection of wire(Drain pump/ Float switch) • Drain pump power inp[...]

  • Página 56

    5. T rouble Shooting - 55 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 07 Different Operation Mode • One of Indoor Unit oper- ate cooling Another Unit operate heating • At the same time, this model cannot use cool and heating mode Display code Title Cause of error Check[...]

  • Página 57

    5. T rouble Shooting - 56 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 09 Indoor EEPROM Check Sum Error • Check sum error 1. Check the poor soldering 2. Check the insertion condition of the EEPROM 3. Check the PCB Connection Display code Title Cause of error Check point &[...]

  • Página 58

    5. T rouble Shooting - 57 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 10 Indoor BLDC Fan Motor Lock The Fan is not operated properly Check the Indoor fan locking Display code Title Cause of error Check point & Normal condition Check Point Check the PCB during the Power[...]

  • Página 59

    5. T rouble Shooting - 58 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 05 / 53 Title Communication (Indoor → Outdoor) • Communication poorly • Power input AC 230V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misco[...]

  • Página 60

    5. T rouble Shooting - 59 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 21 DC PEAK (IPM Fault) • Instant over current • Over Rated current • Poor insulation of IPM • An instant over current in the U,V,W phase - Comp lock - The abnormal connection of U,V,W • Over lo[...]

  • Página 61

    5. T rouble Shooting - 60 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only LED02M LED02M U,V,W CONNECTOR LED01M LED01M U V W U V W LED02M LED01M CAUTION In case that the control box is opend and before checking electrical parts, it should be checked that the LED 01M, 02M turned[...]

  • Página 62

    5. T rouble Shooting - 61 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 22 Max. C/T Input Over Current(18k- 13A ↑, 24k/36k-20A ↑ ) 1. Malfunction of Compressor 2. Blocking of Pipe 3. Low Voltage Input 4. Refrigerant, Pipe length, Blocked... Display code Title Cause of er[...]

  • Página 63

    5. T rouble Shooting - 62 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Check Point 1. Check the power source.(220V ±15%) 2. Check the fan operation is right. 3. Check the current. 4. Check the install condition. 5. Check the CT Sensor Output signal - Check output the CT Se[...]

  • Página 64

    5. T rouble Shooting - 63 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 23 DC Link Low voltage • DC Link volt is below 140Vdc • Check point & Normal condition • Check theCN_(L),CN_(N) Connection. • At not operating : DC Link voltage(280V ↑ ) • At Comp operati[...]

  • Página 65

    5. T rouble Shooting - 64 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Check Point 1. Check the WCN_P(L),P(N) Connection condition at the Main PCB.(Refer to outdoor wiring diagram) 2. Check the DC Link voltage at not operating(280V ↑ ) 3. Check the DC Link voltage at Comp[...]

  • Página 66

    5. T rouble Shooting - 65 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 24 Press S/W Open • Low / High press S/W open. • Check the connection CN_L/PRESS,H/PRESS • Check the components. Display code Title Cause of error Check point & Normal condition Is high pressur[...]

  • Página 67

    5. T rouble Shooting - 66 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Check Point 1. Check the connection of H/press switch 2. Check short or not at the connector of high pressure switch (Normal open) < Main PCB : Connection Check P oint > < Checking the Press s w[...]

  • Página 68

    5. T rouble Shooting - 67 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Check Point 1. Check the Input Voltage (L–N ➔ 220V±10%) 2. Check Input Voltage Sensor output voltage (2.5Vdc±10%) 25 Input voltage • Abnormal Input voltage (140Vac , 300Vac) • Check the power s[...]

  • Página 69

    5. T rouble Shooting - 68 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only GND INPUT(V) < Inv er ter PCB> < Input V oltage Sensing Check P oint > Vdc[...]

  • Página 70

    5. T rouble Shooting - 69 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 26 DC Compressor Position • Compressor Starting fail error • Check the connection of comp wire “U,V,W” • Malfunction of compressor • Check the component of “IPM”, detection parts. Display[...]

  • Página 71

    5. T rouble Shooting - 70 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 27 AC Input Instant over Current Error Inverter PCB input current is over100A(peak) for 2us 1. Overload operation (Pipe clogging/Covering/EEV defect/Ref. overcharge) 2. Compressor damage (Insulation dama[...]

  • Página 72

    5. T rouble Shooting - 71 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only ■ Error Diagnosis and Countermeasure Flow Chart 28 Inverter DC link high voltage error Inv PCB DC link voltage supplied over 420V 1. Input voltage abnormal (L~N) 2. ODU inverter PCB damage(DC Link volt[...]

  • Página 73

    5. T rouble Shooting - 72 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Check Point 1. Check the CN_(L),CN_(N) Connection condition at the Inverter PCB.(Refer to outdoor wiring diagram) 2. Check the DC Link voltage at not operating(280V ↑ ) 3. Check the DC Link voltage at [...]

  • Página 74

    5. T rouble Shooting - 73 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 29 Inverter compressor over current Inverter compressor input current is over 30A 1. Overload operation (Pipe clogging/Covering/EEV defect/Ref. over- charge) 2. Compressor damage(Insulation damage/Motor [...]

  • Página 75

    5. T rouble Shooting - 74 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only LEV Openness (Pulse) COMP Frequency (Hz) Toff(105) ° C T1(90) ° C T2(95) ° C OFF Normal OFF Control Normal Normal Normal D-Pipe temp. 32 D-pipe (Inverter) temp. high (105°C ↑ ) • Discharge sensor[...]

  • Página 76

    5. T rouble Shooting - 75 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Check Point 1. Check the Input Voltage (L–N ➔ 220V±10%) 2. Check Input Voltage Sensor output voltage (2.5Vdc±10%) Is Inv er ter PCB Normal? No Replace inv er ter PCB assemb ly Is input voltage norm[...]

  • Página 77

    5. T rouble Shooting - 76 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only GND INPUT(CT) < Inv er ter PCB> < CT Sensing Check P oint > 1 2 3 Vdc 52 Transmission error between (Inverter PCB ➔ Main PCB) Main controller of Master unit of Master unit canʼt receive si[...]

  • Página 78

    5. T rouble Shooting - 77 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Ω 41 44 45 46 65 D-pipe sensor (Inverter) Air sensor Condenser Pipe sensor Suction Pipe sensor Heat sink sensor • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Solde[...]

  • Página 79

    5. T rouble Shooting - 78 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 51 Over capacity • Over capacity Combination • Check the indoor unit capacity. • Check the combination table. Display code Title Cause of error Check point & Normal condition Check Point 1. Che[...]

  • Página 80

    5. T rouble Shooting - 79 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 60 Inverter PCB & Main EEPROM check sum error EEPROM Access error and Check SUM error 1. EEPROM contact defect/wrong insertion 2. Different EEPROM Version 3. ODU Inverter & Main PCB assembly dama[...]

  • Página 81

    5. T rouble Shooting - 80 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 61 Condenser pipe sensor temp. high • Condenser pipe sensor detected high temp. • Check the load condition. • Check the sensor of Condenser pipe sensor. Display code Title Cause of error Check poin[...]

  • Página 82

    5. T rouble Shooting - 81 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 62 Heatsink High error Inverter PCB heatsink temperature is over 85°C 2. ODU fan locking 3. Heatsink assembly of INV PCB assemble condi- tion abnormal 4. Defect of temperature sensing circuit part defec[...]

  • Página 83

    5. T rouble Shooting - 82 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only PFCM : Measuring resistance between No .19,20 pin 65 Heatsink High error Inverter PCB heatsink sensor is open or short 1. ODU fan locking 2. Heatsink assembly of INV PCB assemble condition abnormal 3. De[...]

  • Página 84

    5. T rouble Shooting - 83 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 67 Fan Lock Error Fan RPM is 10RPM or less for 5 sec. when ODU fan starts or 40 RPM or less after fan starting. 1. ODU fan locking 2. Heatsink assembly of INV PCB assemble condi- tion abnormal 3. Defect [...]

  • Página 85

    5. T rouble Shooting - 84 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 73 AC input instant over cur- rent error (Matter of software) Inverter PCB input power current is over 48A(peak) for 2ms 1. Overload operation (Pipe clogging/Covering/EEV defect/Ref.overcharge) 2. Compre[...]

  • Página 86

    5. T rouble Shooting - 85 - Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only < Input P ower Source Chec k P oint > < Main PCB wiring Check P oint > N N L N L[...]

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    P/NO : MFL63744402 NOVEMBER, 2010[...]