BCD-430WP Service Manual
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refer to the operation of Item (8); and if there is the wire harness or foreign
object interference, reshape the wire harness or remove the foreign object.
Then, power on the system, hold down the combination keys of ‘Function’
and ‘OK’ for 5 minutes to enter the maintenance program, turn on the fan,
checking whether the fan can be started normally. If the fan cannot start,
replace the freezing air duct assembly, and enter the maintenance program
again to check whether the fan can be started normally.
b.
Replace the main board, power on the system to enter the maintenance
program, and turn on the fan, checkingwhether the fan can be turned on
normally.
(8)
The refrigerator does not defrost.
a.
Cut off power supply, remove the electrical box cover, and check whether the
terminals on the main board are properly connected.
b.
After the power is cut off, remove the freezer air duct assembly, checking
whether the defrosting heater terminal is properly connected, whether the
terminal is sealed properly, and whether the terminal is in good condition.
c.
After the power is cut off, remove the temperature fuse, and test the
temperature fuse with a multimeter to determine whether it is damaged or
not.
d.
After the power is cut off, remove the defrosting heater, and measure the
resistance of the defrosting heater with a multimeter to determine whether
the defrosting heater is damaged.
e.
After the power is cut off, replace the main board.
f.
After the power is cut off, replace the display panel.
How to check the heater.
1)
Dismantle the freezer air duct assembly by referring to the disassembly
method of "freezer air duct assembly", unplug the heater terminal, and set
the multimeter as illustrated below to test the heater resistance:
