BCD-317W/351W (external display) Service Manual
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b.
If the alarm continues, cut off power supply, remove the freezer air duct
assembly, check whether the temperature sensor terminal is well connected,
insert it again, and power on the system to observe whether there is alarm or
not.
c.
If the alarm continues, cut off power supply, connect a new freezer
temperature sensor to the terminal inside the cabinet, and power on the
system to observe whether there is alarm or not;
d.
If the alarm continues, cut oft power supply, change the control board, and
power on the system to observe there is alarm or not on the display panel.
(3)
Freezer evaporator fault (the freezer zone icon gets flickering, with E1 displayed.)
a.
Cut off power supply, remove the electrical box cover, check whether the
temperature sensor terminal on the control board is connected in sound
condition, insert it again, and then power on the system to observe whether
there is alarm or not.
b.
If the alarm continues, cut oft power supply, change the control board, and
power on the system to observe there is alarm or not.
(4)
Communication fault
a.
Cut off power supply, remove the electrical box cover, check whether the
temperature sensor terminal on the control board is connected in sound
condition, insert it again, and then power on the system to observe whether
there is alarm or not.
b.
If the alarm continues, cut off power supply, dismantle the display panel to
observe whether its terminal is connected in sound condition, insert the
terminal again, and then power on the system to check whether there is
alarm or not.
c.
If the alarm continues, cut off power supply, replace the display panel, power
on the system after inserting its terminal well, and observe whether there is
alarm or not.
d.
If the alarm continues, cut off power supply, change the main board, power
on the system after insert the terminal well, and check whether there is
alarm or not.
(5)
Ambient temperature sensor failure
a.
Cut off power supply, change the display panel, and power on the system
after inserting the terminal well, checking whether there is alarm or not.
(6)
Door open alarm
When the door is open for more than 3 minutes, the display panel lights up, and
the buzzer issues the alarm sound at the frequency of 1Hz, indicating the door is
not closed tightly.
