Antoinette D Massapequa , NY April 30, 2016 Appliance: Whirlpool Washer GHW9400PL0 Whirlpool Washer Ghw9400pl0: Fh error code showed up on washer. How to replace Washer Water Inlet Flow Meter. I replaced the water Inlet flow meter and its been a week and error doesn't come up anymore. 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes