LG LB-F4280HL / LB-F4280CL Service Manual ▷ View online
–34–
Possible Trouble 2
: The indoor fan does not operate.
NO
NO
Is it the HOT
START mode?
Is IC01M operated
normally?
Check the fan motor
and connector.
(CN-MOTOR)
and connector.
(CN-MOTOR)
YES
Is the each Relay
any problem?
YES
NO
YES
It is normal operation.
Exchange IC01M
Exchange Relay
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.
PCB and DC 12V pattern.
NO
NO
Check the parts of
communication.
communication.
Connector CN-Remo, and
terminals of wired
Remocon exactly.
terminals of wired
Remocon exactly.
Possible Trouble 3
: Wired remote controller does not operate.
–35–
Possible Trouble 4
: 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)
(CN-OUT, CN-AC1.2)
Check RY-4Way
NO
Is 4way-valve operated?
Product Specifications
Item
Cooling Capacity
Btu/h(kcal/h)
42,000(10,584)
42,000(10,584)
Heating Capacity
Btu/h(kcal/h)
42,000(10,584)
-
Moisture Removal
l
/h
5.0
Power Source
Ø, V, Hz
3
,
380-415, 50
Indoor
28
Outdoor
105
Input
Cooling
4,350
4,400
Heating
4,100
-
Running Current
Cooling
7.1
7.4
Heating
7.0
-
E.E.R.
Btu/h-W
9.65
9.4
Indoor
1,180 x 298 x 600
Outdoor
1,225 x 900 x 370
Indoor
46
Outdoor
92
86
Refrigerant (R-22)
g
4,630
2,130
Remocon Type
L.C.D
Liquid
3/8" (9.52)
Gas
3/4" (19.05)
Drain Hose
O
Connecting Wire
0.75mm
2
¤C
Main Power Cable
2.5mm
2
¤C
Time Delay Safety Function
O
Soft Dry
O
Fan Speed (Indoor)
3 (Hi, Med, Low)
Timer
24Hrs
Self-Diagnosis
O
Air Circulation
m
3
/min
Dimensions
(W x H x D)
Net. Weight
mm
kg
W
A
LB-F4280HL
LB-F4280CL
–5–
Service Valve &
Connecting Tube
Connecting Tube
Model Name
Unit
–36–
Electronic control device
• MAIN P.C.B ASM
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