LG LB-F3660HL / LB-F3660CL Service Manual ▷ View online
Contents
Functions
3
Product Specifications (Cooling & Heating)
5
Dimensions
6
Refrigeration Cycle Diagram
7
Wiring Diagram
9
Operation Details
11
Installation of Indoor, Outdoor Unit
14
Test Running
25
3-way Valve
27
Cycle Troubleshooting Guide
32
Electronic Parts Troubleshooting Guide
33
Electronic Control Device
36
Schematic Diagram
37
Exploded View and Replacement Parts List
38
–2–
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 ( )
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.
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
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-
• The place shall allow easy water drainage.(Suit-
able dimension “H” is necessary to get a slope to
drain as figure.)
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.
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
30cm
More than
30cm
30cm
More than
70cm
70cm
Fence or
obstacles
Sunr
oof
H
600
600
Top view
(unit: mm)
Front view
Front
Inspection hole
(600X600)
Control box
1000