LG LSC27931SB Service Manual page 18

1-16. Sequential operation of built-in product
Built-in products such as compressor, frost removal heater, freezing room fan, Cooling Fan and step motor damper are
sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of
parts in applying initial power and completing test.
Function
Def sensor
Above 45°C
Def sensor
Lower than 45°C
(In service)
TEST MODE1
TEST MODE 2
Load Operation Sequence
POWER
0.3 COMP
ON
sec.
ON
PIPE HTR
ON
0.3 0.3
DUCT
POWER
sec. sec.
MOTOR
CLOSE
ON
0.3
0.3
COMP
sec.
sec.
DISP
HTR OFF
ON
0.3
COMP
TEST SW
OTHER
sec.
LOADS
(PRESS
OFF
Once)
: n case of the defrost sensor I
Temperature: +5°C¡é
0.3
sec.
TEST SW
COMP
(PRESS
OFF
2 Times)
F-FAN
0.3 0.3
DUCT
&
sec. sec.
MOTOR
C-FAN
CLOSE
ON
10
sec.
DEF HTR
DEF HTR
OFF
ON
0.3
F-FAN
STEPPING
sec.
&
MOTOR
C-FAN
ON
ON
STEPPING
F-FAN
0.3 0.3
MOTOR
sec. & sec.
OPEN
C-FAN
ON
ON
0.3
F-FAN
sec.
DEF
&
HEATER
C-FAN
ON
OFF
- 17 -
Remark
If error occurs
during
0.3 operation,
STEPPING
sec.
initial
MOTOR
operation is
ON
not done.
•
It si a load
0.3
0.3
movement
sec. DISP sec.
HTR ON sequence in
case of the F/R
room closed.
If pressing sw
once more in the
test mode 2 or
tempreature of
defrost sensor is
more than 5°C it
returns to the
test mode for
initial operation
(comp operates
0.3
after 7minutes).
sec.
STEPPING
MOTOR
CLOSE