Samsung WW90M6 Service Manual page 37

Infor-
Information
mation
Type
Code
AC3
Communication AC4
AC5
UC
Power
(9C)
Switch
bC2
(Main Relay)
WW22N6850NX-A2_SM.indb 35
Causes
• Check the wire connections and
• The diagnosis of the DR
• Check for disconnected wires.
communication error.
• If the main or Inverter PBA's
• Check the wire connections and
• Check for disconnected wires.
• The diagnosis of the Wifi
• Check whether the sub PBA
communication error.
• I f the main PBA's communication
• Check the wire connections and
• The diagnosis of the LCD
• Check for disconnected wires.
communication error.
• If the main or Inverter PBA's
• Check the consumer's power
• Connect a tester to the internal
• Power condition fault.
• An error occurs when under or
over voltage is supplied.
• plug receptacle is used
• Main PBA fault (sometimes)
• Main PBA fault (sometimes)
• Check whether either the
• The Power button is
• Check whether the service PBA
continually pressed.
• A button other than the Power
button is continually pressed.
• Main PCB relay fault
• If the main PBA switching IC on/
Corrective Actions
terminal contacts between the
main and inverter PBAs.
communication circuit is faulty,
replace it.
terminal contacts between the sub
and main PBAs.
is short-circuited because of
moisture.
circuit is faulty, replace it.
terminal contacts between the
main and inverter PBAs.
communication circuit is faulty,
replace it.
conditions. : Make sure to check
the operating voltage.
power terminals during the Boil
or Dry operations and observe
the washing machine's operation
carefully.
: Check the voltages. (An error
occurs when under or over
voltage is supplied.)
: Check whether a plug receptacle
is used. When the connecting wire
is 1m, a momentary low voltage
may drop up to 10 V
Check the contact between the control panel buttons
and their corresponding tact switch.
- There must be a gap between a control panel
Power switch or a tact switch is
continually pressed.
holding screws are fastened too
much. If they are fastened too
much, loosen them a little.
off error has occurred, replace the
main PBA.
Description of Photo
-
button and its corresponding micro switch.
Otherwise, an error occurs after approx. 30
seconds has passed.
Troubleshooting _ 35
gAP
2018/2/1 17:15:50