Troubleshooting _ 31
Error Type
Code
Causes
Remarks
Upper
washer
Lower
washer
Communication
Error
1AC6
AC6
- The signals between the Inverter PBA and main
PBA are not sensed because of communication
error.
- Check The connector connections between the
Inverter PBA and main PBA carefully.
→ Check for incorrect or loose connections, etc.
- Remove the Inverter PBA and Check for any faulty
soldering.
1AC7
AC7
- The signals between the main PBA with Upper
washer and main PBA with Lower washer are not
sensed because of communication error.
- Check The connector connections between the
main PBA with Upper washer and main PBA with
Lower washer carefully.
→ Check for incorrect or loose connections, etc.
- Remove the Inverter PBA and Check for any faulty
soldering.
Switch Error
(Main Relay
Error)
1BC2
BC2
- A switch is jammed or stuck due to be pressed
unevenly due to deformation of the control panel
or button.
- This error may occur when the screws that hold the
sub PBA in place are tightened too much.
- A button other than the Power button is
continually pressed.
(for more than 30 seconds).
- Deformation of an internal plastic injection part.
- A screw for assembling the sub PBA is tightened
too much.
Door Error
1 DC
DC
- A switch contact error because of a deformation of
the door hook.
- When the door is pulled by force.
When the door
is not opened
after the door
open operation.
- This occurs in the Boil wash because the door is
pushed due to a pressure difference from internal
temperature changes.
When the
door is not
locked after
the door close
operation.
1DC1
DC1
- The door lock switch terminal is connected
incorrectly.
- The door lock switch terminal is broken.
- This occurs intermittently because of an electric
wire leakage
- Main PCB fault.
1DC4
-
- Check whether the door of the upper washer is
open.
