Samsung SR-646EV - Troubleshooting Continuous Alarming

Samsung Electronics 25
9-3 In case of continuous alarming
1) In case of “Ding-Dong” alarming
• F/R door open alarms for ten seconds after 2 minutes later. If door opens continuously, door
open alarms for ten seconds with one minute cycle. ( ten times of “Ding-Dong”)
• If there is moisture in door S/W, it is shorted and alarms due to the MICOM’s misjudgement.
In this case the inside lamps of freezer and refrigerator turns off so the lamp do not turns on
though you open the door.
• If the door S/W is rusted, the signal of door open do not reach to MICOM and no alarms and
lamps turned off continuously.
references
N
Y
Connection failure
N
Y
Change sensor
Does the vltg of CON06
Pin 1,3 change?
Is main PCB connection
(CON06) O.K.
N
Y
Connection failure
Is main PCB connection
(CON03) O.K. ?
N
Y
Wire open, Change door S/W
Is the door S/W O.K.
Change main PCB ass’ y
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