Originally Posted by joecaption
A washing machine or any appliance that's not temperarly plugged in should not be on a GFI.
From the 2008 NEC:
210.8 Ground-Fault Circuit-Interrupter Protection for Personnel.
(A) Dwelling Units. All 125-volt, single-phase, 15- and 20-ampere receptacles installed in the locations specified in (1) through (8) shall have ground-fault circuit-interrupter protection for personnel.
(7) Laundry, utility, and wet bar sinks where the receptacles are installed within 1.8 m (6 ft) of the outside edge of the sink.
There is no exceptions listed for washing machines and appliances temporarily plugged in...
GFCI Protection does not work based on load, it works on current leakage escaping from the hot to neutral loop. If an appliance is tripping the GFCI then there is current leakage which coud present a shock hazard so it should be repaired...