Poor cooling
29
CN50G
CN1A
CN1
CN2
Filter board
Control board
Noise filter
Compressor
Lead wire assembly
Reactor
Motor
protector
2-pin
connector
2-pin
connector
Not cooling at all (In case any error codes doesn’t appear as shown in pages 30, 31 even though
switch is pressed for 5 seconds)
Freezer compartment
[2]
Exchange the unit.
Replace the lead wire
assembly (lead wire of
compressor).
Abnormal
No
Yes
Set the temperature to “High”.
No
Proceed to “The refrigerator fan motor does not work.”
No
No continuity
Abnormal
Normal
Replace freezer compartment thermistor
1
Is the set temperature of freezer compartment set to “High”?
Does 110V AC run between and termi-
nals of CN1 on filter board?
3
Defective thermistor
Check freezer compartment thermistor.
When compressor
operates,
E41
is dis-
played as a result
of self-check.
Normal
Control board
4-pin connector
Freezer
compartment
thermistor
CN9S
Is the voltage between and , terminal of
CN2 on the filter board 110V AC?
Yes
Remove the CN1A connector on the control
board and the CN2 connector on the filter
board and check for continuity between the
CN1A terminal and the CN2 connector ter-
minal on the wiring side. (Check for short
and/or open circuit on the motor protector.)
Detach connector CN50G on con-
trol board and check the resistance
respectively between terminals of
,
and :approx. 12.4 .
Check the error display of self-
check after turning on and off the
power supply.
With all the connectors connected.
Inverter-related parts may be
defective. Conduct ice making
test operation. (See pages 30, 31
for error codes.)
Continuity detected
Continuity detected
No
Inspect power-supply wiring such as power cord and
breaker etc.
Replace the filter board.
Motor protector (open circuit)
Just in case, by measuring the
resistance, ensure that the cir-
cuit is open.
Measure the resistance of com-
pressor’s winding between termi-
nals of black, white, and red:
approx. 12.4 .
Compressor does not operate
[3]
Exchange the
unit.
Yes
Is refrigerator in the demonstration mode?
Release the demonstration mode. (See page 11.)
No
Dip freezer compartment thermistor into ice water (0 ), and
measure the resistance between terminal (white) and
(white) by detaching 2-pin connector at the left-back bottom
of vegetable compartment.
•
Resistance at 0 :approx. 6~7k .
Yes
Yes
Does cool air come out of air outlet when opening the refrigerator
compartment door and attaching a magnet bar on the door switch ?
2
Adjustment of the set temperature is
possible. Page 20
No continuity