LG AK-Q2408C00 Installation Manual Download Page 38

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INSTALLATION OF UNIT

ENGLISH

Display

Title

Cause of Error

Outdoor unit related error

1 0 4 2

Communication Error between Master
and Slave (For 20/25RT Only)

Failing to receive Slave signal at main PCB of
Master

1 0 5

1 Master Fan PCB Communication Error

Failing to receive fan signal at main PCB of unit.

Slave Fan PCB Communication
Error (For 20/25RT Only)

Failing to receive fan signal at main PCB of unit.

1 0 6

1 Master FAN IPM Fault Error

Instant Over Current at Master Fan IPM

Slave FAN IPM Fault Error (For
20/25RT Only)

Instant Over Current at Slave Fan IPM

1 0 7

1 Master Fan DC Link Low Voltage Error

Master Fan DC Link Input Voltage is abnormal

Slave Fan DC Link Low Voltage
Error (For 20/25RT Only)

Slave Fan DC Link Input Voltage is abnormal

1 1 3

1 Eva inlet pipe Temperature Sensor Error

Eva inlet pipe temperature sensor of Master is open or
short

Eva inlet pipe Temperature Sensor Error
(For 20/25RT Only)

Eva inlet pipe temperature sensor of Master is open or
short

1 1 5

Eva outlet pipe Temperature Sensor
Error

Eva outlet pipe Temperature Sensor open or short

Eva outlet pipe Temperature Sensor
Error (For 20/25RT Only)

Eva outlet pipe Temperature Sensor open or short

1 5 1

Failure of operation mode conversion at
Master

Pressure unbalance between Masters

Failure of operation mode conversion at
Slave (For 20/25RT Only)

Pressure unbalance between Slaves

1 7 3

Master Constant Speed Compressor
Fault

Comp locking, Check Valve leakage, comp dielectric
break down at Master

Slave Constant Speed Compressor Fault
(For 20/25RT Only)

Comp locking, Check Valve leakage, comp dielectric
break down at Slave

1 8 2

Master Main PCB Main-Sub Micom
communication error

Master Main PCB Main-Sub Micom communication
failed

Slave Main PCB Main-Sub Micom
communication error (For 20/25RT
Only)

Slave Main PCB Main-Sub Micom communication
failed

1 9 3

Excessive increase of Master Fan PCB
Heat Sink Temperature

Master Fan Inverter PCB Temperature is Over 95°C

Excessive increase of Slave Fan
PCB Heat Sink Temperature (For
20/25RT Only)

Slave Fan Inverter PCB Temperature is Over 95°C

1 9 4

Master Fan PCB Heat Sink Temperature
Sensor Error

Master Fan PCB Heat Sink Temperature Sensor open or
short

Slave Fan PCB Heat Sink
Temperature Sensor Error (For
20/25RT Only)

Slave Fan PCB Heat Sink Temperature Sensor
open or short

Summary of Contents for AK-Q2408C00

Page 1: ...manual completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly TYPE SINGLE PACKAGE ENGLISH ESPAÑOL PORTUGUESE ...

Page 2: ...condition er is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You c...

Page 3: ... Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electrician or an Authorized Service Center Do not disassemble or repair the product There is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is ris...

Page 4: ...re of product Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur When flammable gas leaks turn off the gas and open a window for ventilation before turn the prod uct on Do not use the telephone or turn switches on or off There is risk of explosion or fire If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power ...

Page 5: ... the outdoor unit could damage the neigh borhoods It may cause a problem for your neighbors Don t use people to lift and transport the product Avoid personal injury Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operat...

Page 6: ...uctwork 12 Change Airflow 13 Plumbing materials and storage methods 15 Condensate Drain Piping 15 Filter Installation 15 Installation of Remote Controller 20 Electronic Wiring 21 Field Wiring 29 Connect the cable to the Product 31 Dip Switch Setting in Indoor Main PCB 31 Group Control 32 Evaporator Fan Adjustment 33 Trial Run Mode 34 Self Diagnosis Function 39 Starting the Unit 40 Final Installati...

Page 7: ...ION 7 ENGLISH Features 10 12 5 15 RT Front View Return Air outlet vents Control access panel Compressor access panel Supply Motor Access Panel Air outlet vents Drain Hole Air intake vents Rear View INTRODUCTION ...

Page 8: ...8 INTRODUCTION ENGLISH Features 20 25 RT Front View Return Air outlet vents Control access panel Compressor access panel Supply Motor Access Panel Air outlet vents Drain Hole Air intake vents Rear View ...

Page 9: ...58 77 3 32 D 36 1 13 32 E 60 2 3 8 CLEARANCE 860mm CLEARANCE 1160mm CLEARANCE 860mm CLEARANCE 1160mm C A E D B Tool 10 12 5 15 RT A 484 19 1 16 B 864 34 1 32 C 482 18 31 32 D 206 8 1 8 E 126 4 31 32 F 913 35 15 16 G 130 5 1 8 H 800 31 1 2 CLEARANCE 860mm CLEARANCE 1160mm CLEARANCE 860mm CLEARANCE 1160mm E F D C A B H G Figure 1A Figure 1B Figure 1C Tool 10 12 5 15 RT A 484 19 1 16 B 427 16 13 16 C...

Page 10: ... 32 B 2 230 87 25 32 C 3 520 138 19 32 Tool 20 25 RT A 616 24 1 4 B 678 26 11 16 C 655 25 25 32 D 60 2 3 8 E 125 4 29 32 F 882 34 23 32 G 115 4 17 32 H 860 33 27 32 CLEARANCE 860mm CLEARANCE 1160mm CLEARANCE 860mm CLEARANCE 1160mm E F C A B H G D Figure 1A Figure 1B Tool 20 25 RT A 655 25 25 32 B 457 18 C 616 24 1 4 D 196 7 23 32 E 116 4 9 16 F 882 34 23 32 G 116 4 9 16 H 860 33 27 32 H G F E A B ...

Page 11: ...ven in Figure 1 Placing and Rigging Rig the unit using either belt or cable slings The sling eyelet must be placed through the lifting holes in the base rail of the unit The point where the slings meet the lifting eyelet should be at least 1 8m above the unit Use spreader bars to prevent excessive pressure on the top of the unit during lifting Roof Mounted Units On new roofs the curb should be wel...

Page 12: ... insulation with a vapor barrier The outside ductwork must be weather proofed between the unit and the building When attaching ductwork to a horizontal unit provide a flexible water tight connection to prevent noise transmission from the unit to the ducts The flexible connection must be indoors and molded out of heavy canvas Change Airflow Horizontal flow to Down flow Conversion 1 Remove the cover...

Page 13: ...o not cold and warm Clogging of EEV Capillary Gas shortages Degradation of refrigerant oil Poor insulation of the com pressor Do not cold and warm Counter measure No moisture in the pipe Until the connection is completed the plumbing pipe entrance should be strictly controlled Stop plumbing at rainy day Pipe entrance should be taken side or bottom When removal burr after cutting pipe pipe entrance...

Page 14: ...ve degradation of refrigerant oil Because it is flammable it is strictly prohibited to use Carbon dioxide Degrade the drying characteristics of gas Chevron Gas Toxic gas occurs when exposed to direct flame 2 Always use a pressure reducing valve 3 Please do not use commercially available antioxidant The residual material seems to be the oxide scale is observed In fact due to the organic acids gener...

Page 15: ...osed drain system Filter Installation This Unit Filters are anti bacteria and washable type The filter is placed in the flange connected on the return opening It can be removed by opening the cover plate on the side of the flange The flange can be detached and connected to the bottom return opening when down flow installation is required Installation of Remote Controller 1 Please insert wired remo...

Page 16: ...r board fit to the reclamation box if there is a recla mation box 3 Can set up Wired remote controller cable into three directions Setup direction the surface of wall recla mation upper right If setting up remote controller cable into upper and right side please set up after removing remote controller cable guide groove Remove guide groove with long nose Reclamation to the surface of the wall Uppe...

Page 17: ...p board s upper and lower right and left part When separating remote controller from setup board as the picture below after inserting into the lower separating hole using screw driver and then spinning clockwise remote controller is separated There are two separating holes Please individually separate one at a time Please be careful not to damage the inside components when separating Wall Side Wal...

Page 18: ...n cause damage in the temperature sensor Do not install the cable to be 50m or above It can cause communication error When installing the extension cable check the connecting direction of the connector of the remote controller side and the product side for correct installation If you install the extension cable in the opposite direction the connector will not be con nected Specification of extensi...

Page 19: ...Do not install the remote controller where it can be affected by Drafts or dead spots behind doors and in corners Hot or cold air from ducts Radiant heat from sun or appliances Concealed pipes and chimneys Uncontrolled areas such as an outside wall behind the remote controller This remote controller is equipped with a seven segment LED display For proper display of the remote controller LED s the ...

Page 20: ... do the electric work using spe cial circuits in accordance with regulations and this installation manual If power supply circuit has a lack of ca pacity or electric work deficiency it may cause an electric shock or fire The circuit diagram is not subject to change without notice Be sure to connect wires according to the circuit diagram Connect the wires firmly so that not to be pulled out easily ...

Page 21: ...ect and motor current leakage without connection to pipe Install the main switch that can interrupt all the power sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protec...

Page 22: ...d motor current leakage without connection to pipe Install the main switch that can interrupt all the power sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection c...

Page 23: ...tor current leakage without connection to pipe Install the main switch that can interrupt all the power sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection cir c...

Page 24: ...or current leakage without connection to pipe Install the main switch that can interrupt all the power sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection cir cu...

Page 25: ...be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection cir cuit locally Running the product in reversed phase may break the compressor and other parts CAUTION R L1 S L2 T L3 Switch ELCB Power supp...

Page 26: ...upt all the power sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection cir cuit locally Running the product in reversed phase may break the compressor and other p...

Page 27: ...power sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection cir cuit locally Running the product in reversed phase may break the compressor and other parts CAUTION...

Page 28: ...r sources in an integrated manner be cause this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection cir cuit locally Running the product in reversed phase may break the compressor and other parts CAUTION R L...

Page 29: ...efer to Electric Characteristics in the Product Data Book CAUTION Connect the cable to the Product 1 Remove the cover control from the unit by loosening the screw Connect the wires to the terminals on the control board individually as the following 2 Secure the cable onto the control board with the holder clamper 3 Refix the cover control to the original position with the screw 4 Use a recognized ...

Page 30: ...e specification Particularly note the relation between cable length and thickness 7 Do not install an earth leakage circuit breaker in a wet or moist area 8 The following would be caused by voltage drop Vibration of a magnetic switch which will damage the contact point fuse breaking dis turbance of the normal function of the overload 9 The means for disconnection from a power supply shall be incor...

Page 31: ...ire them like above Ensure that the color of wire If the main PCB is not directly connected to the wired remote controller set the Dip switch 3 in the main PCB as ON position OFF Master ON Slave Please connect with same type unit Single Package If there were connected with different type Indoor unit It is can not operate some functions Indoor Unit 1 Terminal Local Supply Block Terminal Local Suppl...

Page 32: ...mn that most closely approximates total system external static pressure Then locate the appropriate airflow rate on CMM for your unit The value obtained represents the break horsepower for the evaporator fan motor and the fan RPM The indoor fan speed is changed by opening or closing the adjustable motor sheave See Figure 8 NOTE Fan Break Horsepower BkW listed in the Table is the percentage range o...

Page 33: ... temperature up down wind flow control wind direction start stop button 4 If pressing button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure Please cancel the right and left of wind direction for RAC product 1 Setup figure 01 blinks at the lower part of indication window 2 To Inc...

Page 34: ...re Switch For 20 25RT Only System is turned off by Slave high pressure switch 2 5 1 Master Unit Input Voltage High Low Voltage Master Unit input voltage is abnormal 2 Slave Unit Input Voltage High Low Voltage For 20 25RT Only Slave Unit input voltage is abnormal 2 6 1 Master Inverter Compressor Start Failure The First Start Failure by Master Inverter Compressor Abnormality 2 Slave Inverter Compres...

Page 35: ...han 1 8 or continuous operation for 3 minutes in condition less than differential pressure 400kPa 4 0 1 Master Inverter Compressor CT Sensor Fault Master Inverter Compressor CT Sensor open or short 2 Slave Inverter Compressor CT Sensor Fault For 20 25RT Only Slave Inverter Compressor CT Sensor open or short 4 1 1 Master Inverter Compressor Discharge Temperature Sensor Fault Master Inverter Compres...

Page 36: ...ignals usually happens after on boarding 2 Slave Communication Error with Inverter Controller For 20 25RT Only Slave Controller part cannot receive inverter control sig nals usually happens after on boarding 5 9 2 Series Installation Error For 20 25RTOnly Different capacity of the EEPROM 6 0 1 Inverter PCB EEPROM Error of Master Access Error of Inverter PCB of Master 2 Inverter PCB EEPROM Error of...

Page 37: ...rent Error For 20 25RT Only Slave Fan Current is over 10A 7 9 1 Master Fan Start Failure Error Master Fan First Position Sensing Failure 2 Slave Fan Start Failure Error For 20 25RT Only Slave Fan First Position Sensing Failure 8 6 1 Master Main PCB EEPROM Error Communication Fail between Master Main MICOM and EEPROM or omitting EEPROM 2 Slave Main PCB EEPROM Error For 20 25RT Only Communication Fa...

Page 38: ... open or short 2 Eva outlet pipe Temperature Sensor Error For 20 25RT Only Eva outlet pipe Temperature Sensor open or short 1 5 1 1 Failure of operation mode conversion at Master Pressure unbalance between Masters 2 Failure of operation mode conversion at Slave For 20 25RT Only Pressure unbalance between Slaves 1 7 3 1 Master Constant Speed Compressor Fault Comp locking Check Valve leakage comp di...

Page 39: ...ges on the gauge ports of the suction line valves Check the suction pressures and compare them to the normal operating pressures about from 700 1000kPa With the compressor operating check the line voltage at the unit The voltage should be within the range shown on the unit name plate If low voltage is encountered check the size and length of the supply line from the main disconnect to the unit The...

Page 40: ...ertically i e along the fins stroke the coil surface with a soft bristled brush Keep all vegetation away from the condenser coil area Routine Maintenance By Owner Is the condenser fan and indoor blower operating correctly with proper rotation and without undue noise Have voltage and running currents been checked to determine if it is within limits Have the air discharge grilles been adjusted to ba...

Page 41: ...o nents In case of V belt inspect wear and tension every three months to determine whether to replace 2 Condenser coils For cleaning 3 Safety Controls For mechanical cleaning 4 Electrical components and wiring For possible replacement or connection tightness 5 Condensate drain For cleaning 6 Inspect the unit duct connections to ensure they are physically sound and sealed to the unit casing 7 Inspe...

Page 42: ...vent the sea wind from the sea The height and width should be more than 150 of the outdoor unit It should be keep more than 70 cm of space between outdoor unit and the windbreak for easy air flow CAUTION Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do not install the product where it could be exposed to sea wind salty wind direct...

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