Two reasons that FE would show, first check the filter second faulty water inlet valve.
Replacing the inlet valves was simple.
Just take note of hose placement on cold water inlet valve it has four ports.
Even though the valve has color code be sure to not swap out the two blue plugs.
Anytime I have an appliance issue, I note the make and model number then
Go to your site, and easily order the part I need. I’ve used AppliancePartsPros.com parts for years and never had an issue.