LG LFX25961 Series Service Manual page 42

8-3 TROUBLESHOOTING
PROBLEM INDICATED BY
POWER 1. The whole
SOURCE is
poor.
2. DISPLAY LED
COOLING is NO COOLING.
poor.
FREEZER
TEMPERATURE
is incorrect
CHECKING
CHECK
METHOD
1. FREEZER/ Check if FREEZER/
REFRIGERAT- REFRIGERATOR
OR. DOOR IS OPEN
and check display.
2. If LAMP is dim. Check visually.
3. The Check connection of
connection of CONNECTOR.
the MAIN PWB
CONNECTOR.
1. If the USE TEST MODE1
COMPRESSOR (forced COOLING).
operate. If less than 7
minutes pass after
compressor shuts
off, don't press the
KEY and wait.
2. If refrigerant is Measure the
leaking. amount of frost
sticking on
EVAPORATOR and
the surface
temperature of the
condenser pipe.
1. If FAN MOTOR USE TEST MODE1
operates. (forced COOLING).
2. If Check the amount
DEFROSTING of frost sticking on
is normal. the EVAPORATOR.
3. If SENSOR is Of the Refrigerator
normal. SENSOR.
4. Door Line Check the seal
contact. when the
door is closed.
- 42 -
CAUSE
POWER SOURCE Replace Main PWB
is poor.
Applied voltage Replace Main PWB
error.
CONNECTOR Reconnect
connection is poor. CONNECTOR
TRANS FUSE is Replace Main PWB
open.
COMPRESSOR Replace OLP, PTC.
locked or blocked.
OLP, PTC is poor. Replace MAIN PWB.
COMPRESSOR
RELAY is poor.
THE Check the connection
CONNECTING of the black wire of
WIRE is poor. the MAIN PWB
CONNECTOR (CON3).
Refrigerant Replace the leaking
leakage. part and replace any
lost refrigerant.
FAN MOTOR is Replace the FAN
poor. MOTOR.
CONNECTING Certify the MOTOR
WIRE is poor. and the connection of
the black wire of the
MAIN PWB
CONNECTOR (CON4).
DEFROSTING is See DEFROSTING is
poor. poor.
SENSOR Replace SENSOR.
RESISTANCE is
poor.
Door liner Replace door liner.
damaged.
SOLUTION