The F20 fault code means that there is not enough water in the washer. This may be due to poor water supply. Please, try the following:
- Press PAUSE/CANCEL twice to cancel the cycle and unplug/disconnect the washer.
- Make sure that hot and cold water faucets are turned on
- Check inlet valve screens for debris
- Make sure the inlet hose is not kinked, clogged or frozen
- Plug the washer back in and restart the cycle.