Samsung RM255BABB, RM255BASB manual Alarm Sounds continuouslyrelated to the buzzer, Diagnostic

DIAGNOSTIC

6-5) Alarm Sounds continuously(related to the buzzer)

1) If “Ding-Dong” sounds continuously

Start

Freezer door MICOM No. 49, Fridge door MICOM No. 47 CF - door micom no.50

CR - door micom no.48

–Regular voltages are 5V to Open : 0V to Close.

Yes

Is the door slightly open?

	No		Remove causes after understanding
			the conditions for interference by door
Is moisture penetrated		Yes	gasket, food etc.
into the door S/W?
	NO
			Exchange the door S/W.
Is the input voltage of main PCB		NO
changed at door-open, door-close?
	YES		Troubleshoot the breaking of
			wire and bad door S/W.
Is connector (CN30) inserted		NO
correctly?

Separate the door S/W and check if the measured value of unit is changed from 0 to depending to S/W ON/OFF.

	YES		Troubleshoot if connector is not
			inserted or poor contact.
Main PCB and door S/W are		NO
normal?
	YES		inserted or poor contact.
			Exchange the door S/W.
Main PCB and door S/W are normal.

2) If “Beep” sounds continuously

Start

Did you select forced	Selected
operation and forced defrosting?

NO

NO

Does buzzer still sound after power-on again?

Release the forced operation and forced defrosting functions, or turn ON again after power OFF.

YES

Check if there is any part shorted out or

foreign matter in the test jumper part within the

main-PCB.

Main PCB is normal

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