4-2-9) When The Unit Keeps Alarming (Buzzer Sound) - Samsung RB31FEJNB Series Service Manual

4. TROUBLESHOOTING
4-2-10) When the unit keeps alarming (Buzzer Sound)
Reference
1. Fridge / Freezer Door Open Alarm : It sends out an alarm sound when it passes over 2 minutes after the door is
open. And, when the door remains open, it will keeps alarming every minute.
2. When the door is not closed properly, MICOM recognizes it as Door Open and sends out an alarm sound.
When it passes over 10 minutes after it recognizes the Door Open, the room lamps will be off.
At this time, when the Door is completely open, the Lamp will not be on right away, but after a while.
① When there is "Ding Dong" sound not stopping
Door & MICOM State
R DOOR : MICOM(#22)
Door
F DOOR : MICOM(#27)
Close 0V(Low)
Open 5V(High)
※Note
F-DOOR S/W only applies to models
for STIWA.
② When it keeps 'Beeping'
Start
Door stays open?
Closed
Water penetrates into
Door S/W?
No
MICOM #22 and #27
Voltage changes when the Door is
open/close?
Yes
Connector (CN30) is
inserted properly?
Yes
Door S/W is in good
condition?
Yes
Check MAIN PCB and Door S/W
Start
The unit is not in
Forced Operation or Forced
Defrost mode.
No
When the unit is
plugged out and in again, it
keeps beeping?
Yes
Check if there is any foreign
substance at Test Jumper of MAIN
PCB or any part shorted out
73
Gap exists
Check if there is any obstacle
pushing the Door open.
Yes
Replace Door S/W
No
Repair Wire Cut / Door S/W
No
Insert the Connector
No
Replace Door S/W
Yes
Cancel Forced Operation/Defrost
No
MAIN PCB is normal