Start
Does defrosting
start if the forced defrost
key is pressed?
Is power supplied to
defrost heater?
Are MICOM pin 14, 15
“HIGH”?
Are IC 06 pin 17, 18
“LOW”?
Defrost heater
relay is OK?
Connector CON C8, 09, 10
are OK?
Evaparator temp. fuse
short-circuited?
Defrost P-cord short-
circuited?
Check wire connection
Replace EVAP ass’y
Replace temperature fuse
Replace CON
Replace relay
Replace IC06
Replace MICOM & PCB
Forced starting
Does the defrost-sensor
register –5˚C?
Reference7
(Page. 41)
Measure resistance
of defrost sensor
R Defrost H #14
F Defrost H #15
N
N
N
Y
Y
Y
A
Y
Y
Y
Y
Y
N
N
N
N
N
N
R Defrost H #18
F Defrost H #19
R Defrost H RY01
F Defrost H RY09
Reference 2
(Page. 38)
30 Samsung Electronics
3) No defrosting
1. Even though both F·R-defrost sensors short-circuit, normal operation continues without
defrosting.(Refer to self-diagnosis function)
2. Even though the temperature fuse is off, there is no heating but defrosting natural
temperature increase comp off-time takes longer.
3. Even though both F·R-defrost sensor are open, heating does not end and comp-off
maintains with temperature fuse short-circuited.(Refer to self-diagnosis function)
Precautions
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