LB-F3680HL, LB-F3680CL — LG Air Conditioner Service Manual (repair manual)

Model
LB-F3680HL LB-F3680CL
Pages
70
Size
1.47 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lb-f3680hl-lb-f3680cl.zip
Date

View LG LB-F3680HL / LB-F3680CL Service Manual online

Functions
ƒU
Room temperature sensor. (Thermistor)
ƒU
Maintains the room temperature in accordance with the Setting Temp. 
ƒU
Indoor fan is delayed for 5 seconds at the starting.
ƒU
Restarting is inhibited for approx. 3 minutes.
ƒU
High, Med, Low
ƒU
Intermittent operation of fan at low speed.
ƒU
Both the indoor and outdoor fan stops during defrosting.
ƒU
Hot start after defrost ends.
ƒU
The indoor fan stops until the evaporator piping temperature will be reached at 28°C
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
Deice (defrost) control (Heating)
Hot-start Control (Heating)
–3–
–4–
Remote Controller
Operation ON/OFF
Operation Mode Selection
Fan Speed Selection
Room Temperature Display
Temperature Setting
Setting the Time or Timer
(Cooling 
model only)
(Heating 
model only)
(Low)
(Med)
(High)
Cooling Operation Mode (       )
Heating Operation Mode (       )
Soft Dry Operation Mode (       )
Fan Operation Mode
HI
MED
LO
Set
: High:39°C
¡Œ
LOW:11°C
: Fan Operates without cooling & heating
Although the air conditioner is turned off by a power failure, it is restarted 
automatically after a power resupply.
Cooling
Heating 
Down to 18°C
Up to 30°C
,
Down to 16°C
Up to 30°C
,
–14–
Installation of Indoor, Outdoor Unit
1. Selection of the best location
1) Indoor unit 
Select location
Install the air conditioner in the location that satis-
fies the following conditions.
• The place shall easily bear a load exceeding four
times the indoor unit’s weight.
• The place shall be able to inspect the unit as the
figure.
• The place where the unit shall be leveled.
• The place shall allow easy water drainage.(Suit-
able dimension “H” is necessary to get a slope to
drain as figure.)
• The place shall easily connect with the outdoor
unit.
• The place where the unit is not affected by an
electrical noise.
• The place where air circulation in the room will be
good .
• There should not be any heat source or steam
near the unit.
2) Outdoor unit
• If an awning is built over the unit to prevent
direct sunlight or rain exposure, be careful that
heat radiation from the condenser is not restrict-
ed. 
• There should not be any animals or plants which
could be affected by hot air discharged. 
• Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
More than
30cm
More than
30cm
More than
70cm
Fence or
obstacles
Sunr
oof
H
600
600
Top view
(unit: mm)
Front view
Front
Inspection hole
(600X600)
Control box
1000
–23–
Ceiling
CAUTION
1~3mm
Drainage hole
Drainage hole
Make sure to be closed.
Unit
Drainage pipe
(Local supply)
Thermal insulator
(Local supply)
Drainage hole
Front of view
CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING
Lay the drain hose with a downward inclination
so water will drain out.
• Alway lay the drain with downward inclina-
tion (1/50 to 1/100). 
Prevent any upward flow or reverse flow in
any part.
• 5mm or thicker formed thermal insulator
shall always be provided for the drain pipe.
1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 5mm.
• The unit must be horizontal or declined to the drain hose connected when finished installation.
CORRECT
CORRECT
INCORRECT
INCORRECT
• Upward routing not
allowed
Page of 70
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Download LG LB-F3680HL / LB-F3680CL Service Manual (Repair Manual)

Here you can view online or download LG LB-F3680HL / LB-F3680CL Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair LG LB-F3680HL / LB-F3680CL Air Conditioner. Information contained in LG LB-F3680HL / LB-F3680CL 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).