10-5) When alarm continues to sound,
Information
DOOR OPEN alarm for the Freezer/Refrigerator sound for 10 seconds 2 minutes after the
first DOOR OPEN and then, continues to sound for 10 seconds at 1-minute interval when the
DOOR is in open. (Ding-Dong sounds 10 times)
If water or moisture permeates DOOR S/W, the contact of DOOR S/W comes to be SHORT.
At that case, DOOR is perceived to be in OPEN by MICOM and alarm continues.
When this situation continues for 10 minutes, the inside lamp of the freezer is turned OFF.
The lamp does not come to be ON when the door comes to open actually.
If DOOR S/W is wetted and the contact becomes rotten, the signals indicating DOOR OPEN is
not inputted to MICOM and so, the lamp is in OFF and DOOR OPEN alarm does not sound.
(1) When Ding-Dong sounds continuously,
Any trace of the
permeation of water in
DOOR S/W
START
Replacement of DOOR S/W
Input voltage
at MICOM Pin #48, #49
is changed?
Repair of wire snapping and
trouble with DOOR S/W
MAIN-PCB
connector (CN30, 31) is normally
inserted?
Repair of connector contact
trouble, Re-insertion
No trouble with MAIN PCB
and DOOR S/W
N
N
(On DOOR OPEN/CLOSE)
Y
Y
N
Replacement of DOOR S/W
N
Y
DOOR S/W itself is normal?
Y
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