This error code most likely indicates that the CONTROL LOCK has been activated. To deactivate the control lock press and hold the drain and spin button for 5 seconds. Or you can try to reset it by unplugging your machine, and plug it back in after 5-10 min.
From [post|264810] old thread:
This error code most likely indicates that the CONTROL LOCK has been activated. To deactivate the control lock press and hold the drain and spin button for 5 seconds. Or you can try to reset it by unplugging your machine, and plug it back in after 5-10 min.