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TROUBLESHOOTING
4-2-8. When alarm sound continuous without stop(related with buzzer sound)
Start
Door is ajar
Start
Is door closed
completely?
Is water penetrated
into the door switch?
Is the door
switch unit normal?
Is the connector(CN30)
inserted correctly?
Is manual operation
/defrost selected?
Does buzzer sounds
when power On again?
Is the input
voltage of main #83 and #82
changed at door-open and close
status?
If 'ding-dong'sound continuously
If 'beep-beep' sounds continuously
Remove causes after comprehending
the conditions of interferance by door
gasket, food etc,
Replace Door S/W
Repair wire connection and
Door S/W
Normal
Recheck and Replace Panel
PCB
MAIN PCB & Door S/W is normal.
Recheck and replace Panel PCB
Seperate the door switch andcheck if
the measured value of unit is
changed from 0 to
according to switch ON/OFF.
* FF Door Switch is magnetic switch.
(It can be operated when door
magnet is combined with it.)
Replace Door S/W
Connector is not inserted,
Repair disconnect part
Enforce the cancelation the
manual operation/ defrost function
or power On after power Off
Door & MICOM State
Door
F
MICOM
(#83)
Close
Open
5V(High)
0V(Low)
0V(Low)
5V(High)
R MICOM(#82)
Right and Left