88
TROUBLESHOOTING
①
If 'ding-dong'sound continuously
4-2-8. When alarm sounds continuously without stop(related with buzzer sound)
②
If 'beep-beep' sounds conttinuously
Is manual
operation /defrost
selected?
Does
buzzer sounds when power
On again?
Recheck and Replace Panel PBA.
Enforce the cancelation the manual operation/
defrost function or power On after power Off
Normal
Yes
Yes
No
No
Seperate the door switch andcheck if the
measured value of unit is changed from 0Ω to
Ω∞ according to switch ON/OFF.
* FF Door Switch is magnetic switch.
( It can be operated when door magnet is
combined with it.)
Start
Remove causes after comprehending the
conditions of interferance by
door gasket, food etc,
No
Replace Door S/W
No
Replace Door S/W
No
MAIN PCB & Door S/W is normal.
Recheck and replace Panel PBA.
No
Connector is not inserted, Repair
disconnect part.
Repair wire connection
and Door S/W.
No
Yes
Yes
Yes
Yes
Yes
Is door closed completely?
Is water
penetrated into the door
switch?
Is the door
switch unit normal?
Is the connector CN76
inserted correctly?
Is the
input voltage of main #29,#28 changed at
door-open and close status?
Door & MICOM State
Door
FZ MICOM(#60)
Mid-drawer Micom(#15)
FF MICOM(#58)
Right and Left
Close
0V (Low),
0V (Low)
Open
5V (High)
5V (High)
Start
Summary of Contents for RF28R7201 AA Series
Page 12: ...12 ProductSpecifications 2 3 InteriorViews applicable models only ...
Page 63: ...63 TROUBLESHOOTING ⓐ ⓑ ⓒ ⓓ ⓔ ⓕ ⓖ R 10 F 10 R 1 F 1 ...
Page 98: ...98 5 PCB DIAGRAM 5 1 PBALayoutwith part position ...
Page 101: ...101 6 WIRING DIAGRAM This document can not be used without Samsung s authorization ...