DOWNLOAD LG LT-B3680HL Service Manual ↓ Size: 1.65 MB | Pages: 45 in PDF or view online for FREE

Model
LT-B3680HL
Pages
45
Size
1.65 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lt-b3680hl.zip
Date
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LG LT-B3680HL Service Manual ▷ View online

–36–
Possible Trouble 3
: Auto Air direction louver does not operate.
Possible Trouble 4
: Wired remote controller does not operate.
YES
NO
YES
Is IC01M operated
normally?
Is the PIN 10 of
CN-AC2 DC12V?
Check the step motor
and connector 
(CN-AC2, AC1)
Check the main P.C.B
DC12V pattern
NO
Exchange IC01M
NO
YES
YES
YES
Is the LCD operated
normally?
Is the terminal of wired
Remocon T2 DC12V
Is the pin 31, 32 of
Micom DC 5V
Change the wired Remocon.
Check the wired Remocon 
PCB and DC 12V pattern.
NO
NO
Check the parts of 
communication.
Connector CN-Remo, and 
terminals of wired 
Remocon exactly.
–37–
Possible Trouble 5
: Ineffective Heating
YES
YES
NO
YES
Is it Heating Mode?
Does the temperature 
set all right?
Change IC01M.
NO
NO
Adjust operation mode.
Adjust set temperature
Is IC01M operated 
normally?
YES
Check the connector
(CN-OUT, CN-AC1.2)
Check RY-4Way
NO
Is 4way-valve operated?
Product Specifications (Cooling & Heating) 
• 50Hz
Model Name
Item
Unit
Cooling Capacity
Btu/h(kcal/h)
Heating Capacity
Btu/h(kcal/h)
Moisture Removal
l/
h
Power Source
Ø, V, Hz
Indoor
Outdoor
Input
Cooling
Heating
Running Current
Cooling
Heating
E.E.R.
Btu/h-W
Indoor
Outdoor
Refrigerant (R-22)
g
Airflow Direction Control (Up & Down)
Remocon Type
Liquid
Gas
Sleeping Operation
Drain Hose
Connecting Wire
Main Power Cable
Time Delay Safety Function
Air Circulation
Soft Dry
Fan Speed (Indoor)
Timer
Self-Diagnosis
Air Circulation
m
3
/min
Dimensions
(W
H
D)
mm
W
A
LT-B3680CL
36,000(9,072)
–
5.0
22
58
4,300
–
7.5
–
–
3,150
36,000(9,072)
36,000(9,072)
5.0
22
58
4,300
4,100
7.5
7
–
3,150
LT-B3680HL
–5–
Service Valve & 
Connecting Tube
800 x 800 x 298(910 x 910 x 30)
3Ø, 380-450V, 50Hz
790 x 965 x 320
O
Wired Remocon, wireless Remocon(Option)
3/8"(9.52)
3/4"(19.05)
O
O
0.75mm
2
↑
2.5mm
2
↑
O
O
O
3(Hi, Med, Low)
24Hrs
O
–38–
Electronic control device 
(1) MAIN P.C.B ASM (AC) 
(2) MAIN P.C.B ASM (DC)
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