Thank you for submitting a question to Manage My Life.
The model number you gave me does not come up in our system. I will assume you have a MVWB750WQ0.
The F1 fault code on this washer indicates that the water level pressure transducer signal is out of range. The pressure transducer air hose tubing being pinched or crimped can cause this. A failed pressure transducer on the machine control board can also cause it.
The first image below shows the method for accessing the pressure transducer tube that runs from the bottom of the washer tub to the machine control. I recommend checking this air hose for pinches, twists or crimps.
NOTE: Be sure to unplug the washer to disconnect electrical power before accessing internal components
. If the pressure hose is blocked you should be able to blow through it to clear it.
If you find no problems with the pressure transducer tube, then the machine control board will need to be replaced. The procedure for accessing and replacing the machine control board is shown in the second image below. The part number for the machine control board is W10253697.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website;
Sears Home Services
Here is a link that you may use to view the parts list diagram or purchase any parts needed for your appliance;
Sears Parts Direct
I hope this is helpful. Check the things I have covered here and if I may be of further assistance please reply to this post.