My state gas water heater is only 6mo old, it got a little wet yesterday because plastic tubing that runs above it to my refrigerator upstairs got a pinhole leak, so water heater got a little wet till we shut water off. Now thermostat won't reset and lights on thermostat have error with FV sensor but there is no gas leaking or any other flammable vapors present at all. Any ideas how to reset the thermostat?

Did you turn the power off and then back on for the water heater?

Yes

Yes I shut the power off and back on the water heater