TROUBLE
D
IAGNOSIS
-7
1-
Problems
Symptom
Causes
Checks
Measures
Remarks
Defective
Buzzer rings
Trouble mode indication.
Check trouble diagnosis function.
Repair troubles
Refer to mode
display button.
but key does
indication in
not sense even
function
button is
explanations.
pressed.
Door Buzzer
Buzzer
Defective connecting lead wire from
Check lead wire associated with door
Repair lead wire.
Check model
continuously
main PCB to door switch.
switch.
with dispenser.
rings or door
Defective freezer compartment door
Refer to door switch in parts repair
Replace Freezer
opening alarm
switch parts.
guide.
compartment door
does not work.
switch.
Bad water/ice
Ice and water
Defective connecting lead wire from
Check Lead Wire associated with lever
Repair lead wire.
dispenser.
are not
Main PCB to lever switch.
switch with a tester.
dispensed.
Defective lever switch parts
Refer to door switch in parts repair guide. Replace lever switch.
Defective photo coupler IC parts.
Check voltage change at photo coupler
Replace photo
output terminals with lever switch
coupler IC or PCB.
pressed. It is OK if voltage change is
between 0V - 5V.
Defective relay associated with ice
Check relay (RY4, RY5, RY12)
Replace defective
dispense (geared motor, cube and
with a tester.
relay.
dispenser solenoid).
Defective parts associated with ice
Check resistance of parts with a tester.
Replace defective
dispense (geared motor, cube and
parts.
dispenser solenoid).
Defective relay associated with water
Check relay (RY7) with a tester
Replace defective
dispense.
relay.
Defective parts associated with water
Check resistance of parts with a tester.
Replace defective
dispenser.
parts.
