The LF error means Long Fill. When you start a cycle the water should come into the dispensers. If you have a good flow through the dispenser the valves will be okay. I recommend checking the inlet water screens on the back of the washer. The inlet screens are located on the water valve. To access the screens you will turn the water off and remove the inlet hoses. The screens prevent debris from entering the valve and sometimes over time mineral deposits build up on the screens. This can block the water or slow the water fills down to a trickle. You can pull the screens out and clean them if necessary. Flush the inlets thoroughly with water when replacing the screens. If debris gets past the screens, it can cause the valves to stick open and an overflow of water can result. While you have the fill hoses disconnected, place the ends of the hoses in a bucket and briefly turn on the faucets to check for proper water pressure and flow from both hoses. A common reason for an L F (long fill) error on this washer is the drain hose being stuck to far down the drain standpipe. If the drain hose is to far down the standpipe then a siphon can occur which causes the washer to fill and drain at the same time. This will cause a long fill error.
Hello,
the F-1 means the main control has failed, here is a video that explains how to replace the control board.
More information can be found here about this problem.
http://www.appliancerepairlesson.com/
Blow that tubing out and re-secure; retry with water OUT of tub so the pressure can properly build in that tubing. 
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