LB-H1860HL, LB-H1860CL, LB-H2460HL, LB-H2460CL — LG Air Conditioner Service Manual (repair manual)

Model
LB-H1860HL LB-H1860CL LB-H2460HL LB-H2460CL
Pages
51
Size
1.61 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lb-h1860hl-lb-h1860cl-lb-h2460hl-lb-h2460cl.zip
Date

View LG LB-H1860HL / LB-H1860CL / LB-H2460HL / LB-H2460CL Service Manual online

Ceiling Duct Type
Air Conditioner
SERVICE MANUAL
MODELS: LB-H1860HL/CL
LB-H2460HL/CL
LB-G3680HL/CL
Contents
Functions  .................................................................................................................................3
Product Specifications (Cooling & Heating) ..........................................................................5
Dimensions  ..............................................................................................................................7
Refrigeration Cycle Diagram  ..................................................................................................9
Wiring Diagram  ......................................................................................................................11
Operation Details ...................................................................................................................13
Installation of Indoor, Outdoor Unit  .....................................................................................16
3-way Valve  ............................................................................................................................33
Cycle ........................................................................................................................................38
Cycle Troubleshooting Guide ...............................................................................................41
Electronic Parts Troubleshooting Guide  .............................................................................42
Electronic Control Device  .....................................................................................................45
Exploded View and Replacement Parts List  .......................................................................46
–2–
Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Operation(Auto Change Over)
Deice (defrost) control (Heating)
Auto Restart
–3–
Hot-start Control (Heating)
• The indoor fan stops until the evaporator piping tempera-
ture will be reached at 28°C.
High head height Drain pump(Optional)
• A standard drain-head height of up to 700mm is possible.
Central Control(Optional)
• It is operating individually or totally by central control function.
Group Control(Optional Wiring)
Phase Control
PLASMA (Optional)
Telephone Control Operation (Optional)
• Each controller can control 16 units and 8 controllers can connect.
• It operates maximum 16 units by only one wired remote con-
troller and each unit starts random to prevent overcurrent.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automati-
cally previous operation mode after power supply.
• Fan speed is varied according to the state of dampers by micom.
• Calling from outside, you can start the air conditioner to
keep the room comfortable.
• Even though you went out with the air conditioner on, you
can turn it off using the phone outside.
• The function will be operated while in any operation mode wigh selecting the
function.
• The function is to be stopped while it is operating with selecting the function.
• The setting temperature and desired operation mode are auto-
matically set by fuzzy rule.
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
–4–
Remote Controller
Operation ON/OFF
Operation Mode Selection
Fan Speed Selection
Room Temperature Display
Temperature Setting
Setting the Timer 
Weekly Program
(Cooling 
model only)
(Heating 
model only)
(Low)
(Med)
(High)
Cooling Operation Mode (       )
Heating Operation Mode (       )
Auto Operation Mode (       )
Soft Dry Operation Mode (       )
Fan Operation Mode
Phase Control Setting
HI
AUTO
MED
LO
Program
Holiday
SET/CLR
Min
Hour
Week
Timer
Cancel
Timer
Cancel
Timer
: High:39°C 
LOW:11°C
: Fan Operates without cooling & heating
Cooling
Heating 
Down to 18°C
Up to 30°C
Down to 16°C
Up to 30°C
Page of 51
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Download LG LB-H1860HL / LB-H1860CL / LB-H2460HL / LB-H2460CL Service Manual (Repair Manual)

Here you can view online or download LG LB-H1860HL / LB-H1860CL / LB-H2460HL / LB-H2460CL Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair LG LB-H1860HL / LB-H1860CL / LB-H2460HL / LB-H2460CL Air Conditioner. Information contained in LG LB-H1860HL / LB-H1860CL / LB-H2460HL / LB-H2460CL service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).