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LG LMU366HV manuale d’uso - BKManuals
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LG LMU366HV manuale d’uso

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Le regole impongono al rivenditore l'obbligo di fornire all'acquirente, insieme alle merci, il manuale d’uso LG LMU366HV. La mancanza del manuale d’uso o le informazioni errate fornite al consumatore sono la base di una denuncia in caso di inosservanza del dispositivo con il contratto. Secondo la legge, l’inclusione del manuale d’uso in una forma diversa da quella cartacea è permessa, che viene spesso utilizzato recentemente, includendo una forma grafica o elettronica LG LMU366HV o video didattici per gli utenti. La condizione è il suo carattere leggibile e comprensibile.

Che cosa è il manuale d’uso?

La parola deriva dal latino "instructio", cioè organizzare. Così, il manuale d’uso LG LMU366HV descrive le fasi del procedimento. Lo scopo del manuale d’uso è istruire, facilitare lo avviamento, l'uso di attrezzature o l’esecuzione di determinate azioni. Il manuale è una raccolta di informazioni sull'oggetto/servizio, un suggerimento.

Purtroppo, pochi utenti prendono il tempo di leggere il manuale d’uso, e un buono manuale non solo permette di conoscere una serie di funzionalità aggiuntive del dispositivo acquistato, ma anche evitare la maggioranza dei guasti.

Quindi cosa dovrebbe contenere il manuale perfetto?

Innanzitutto, il manuale d’uso LG LMU366HV dovrebbe contenere:
- informazioni sui dati tecnici del dispositivo LG LMU366HV
- nome del fabbricante e anno di fabbricazione LG LMU366HV
- istruzioni per l'uso, la regolazione e la manutenzione delle attrezzature LG LMU366HV
- segnaletica di sicurezza e certificati che confermano la conformità con le norme pertinenti

Perché non leggiamo i manuali d’uso?

Generalmente questo è dovuto alla mancanza di tempo e certezza per quanto riguarda la funzionalità specifica delle attrezzature acquistate. Purtroppo, la connessione e l’avvio LG LMU366HV non sono sufficienti. Questo manuale contiene una serie di linee guida per funzionalità specifiche, la sicurezza, metodi di manutenzione (anche i mezzi che dovrebbero essere usati), eventuali difetti LG LMU366HV e modi per risolvere i problemi più comuni durante l'uso. Infine, il manuale contiene le coordinate del servizio LG in assenza dell'efficacia delle soluzioni proposte. Attualmente, i manuali d’uso sotto forma di animazioni interessanti e video didattici che sono migliori che la brochure suscitano un interesse considerevole. Questo tipo di manuale permette all'utente di visualizzare tutto il video didattico senza saltare le specifiche e complicate descrizioni tecniche LG LMU366HV, come nel caso della versione cartacea.

Perché leggere il manuale d’uso?

Prima di tutto, contiene la risposta sulla struttura, le possibilità del dispositivo LG LMU366HV, l'uso di vari accessori ed una serie di informazioni per sfruttare totalmente tutte le caratteristiche e servizi.

Dopo l'acquisto di successo di attrezzature/dispositivo, prendere un momento per familiarizzare con tutte le parti del manuale d'uso LG LMU366HV. Attualmente, sono preparati con cura e tradotti per essere comprensibili non solo per gli utenti, ma per svolgere la loro funzione di base di informazioni e di aiuto.

Sommario del manuale d’uso

  • Pagina 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[...]

  • Pagina 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 .............................[...]

  • Pagina 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 ............................................................................[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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' [...]

  • Pagina 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 .....................................................[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 [...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 ............................................[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 [...]

  • Pagina 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 [...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 .........................................................[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 ...............................................................[...]

  • Pagina 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 [...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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. ?[...]

  • Pagina 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[...]

  • Pagina 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)[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 &[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 [...]

  • Pagina 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 [...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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[...]

  • Pagina 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 [...]

  • Pagina 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[...]

  • Pagina 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[...]