Flashing alternating F &H on "Estimated Time Remaining"

Type: Kenmore Elite HE3 Washing Machine

Often the machine stops in mid cycle. Sounds an alarm and the following two displays flash:

1-Wash Cycle

2- Estimated Time Remaining flashes with alternating F & H.

Sometimes pushing "Pause/Cancel" button works often not.

Very annoying and I have no idea what is causing the error

Any idea what to do?