The F1 error code on this washer indicates a Primary Control Board failure. It is likely that the machine control board will need to be replaced to correct this problem. The part number for the machine control board is undetermined because you have not provided me with the exact model # of your washer. The procedure for replacing the machine control board is provided HERE
Note: Be sure to unplug the washer to disconnect electrical power before accessing internal components.
There is a slight possibility that a problem with the pressure switch hose could be causing this problem. A pinched or twisted air hose can cause this fault code. When you open the console, check the air hose connected to the pressure switch on the machine control board. If it is pinched or crimped, I recommend rerouting the hose to resolve this problem. This may fix your problem without replacing the control board.
Note: You may want to check for this condition before ordering the control board. Most electronic control boards cannot be returned for a refund or credit.
If you find no apparent problems with the air hose on the pressure switch, then replacing the machine control board on this washer should correct your problem. There is a risk involved in replacing this part yourself. As noted above, you could have a problem with the air pressure hose that is not apparent upon your initial inspection. A service technician would normally need to properly and thoroughly diagnose this problem before replacing the control board. Good luck.
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