22 _ Troubleshooting
Error Type
For USA
Causes
Remarks
Communication
Error
AC
- The signals between the sub and main PBAs are not sensed
because of commuication error.
- Check the connector connections between the sub and main
PBAs carefully.
→ Check for incorrect or loose connections, etc.
- Remove the sub PBA C/Panel and check for any faulty
soldering.
AC3
- The signals between The DR Module and main PBAs are not
sensed because of commuication error.
- Check The connector connections between The DR Module
and main PBAs carefully.
→ Check for incorrect or loose connections, etc.
- Remove The DR Module and Check for any faulty soldering.
AC4
- The signals between The WIFI Module and main PBAs are not
sensed because of commuication error.
- Check The connector connections between The WIFI Module
and main PBAs carefully.
→ Check for incorrect or loose connections, etc.
- Remove the WIFI Module and Check for any faulty soldering.
AC5
- The signals between The LCD Module and main PBAs are not
sensed because of commuication error.
- Check The connector connections between The LCD Module
and main PBAs carefully.
→ Check for incorrect or loose connections, etc.
- Remove The LCD Module and Check for any faulty soldering.
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.
Switch Error
(Main Relay
Error)
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
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.
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.
Heater Error
HC,HC1
- The washing heater is short-circuited or has a wire
disconnected.
- The washing heater in the tub has an error.
(Contact error, temperature sensor fault)
- If the water level sensor operates without water because water
is frozen or for any other reason and the temperature sensor
engaged at the bottom to prevent overheating for the washing
heater detects a temperature of 100 to 150 ˚C, the washing
machine turns the input power off.
If the heater has no
error, this occurs
because of a PBA relay
malfunction.
