Sorry Loboclone I don't have a answer for your washer problem.
Hopefully someone will chime in.
I just finished putting up a 2nd 260watt panel on the roof.
I have the living room tv playing a DVD, the bedroom tv on and the residential refrigerator all running off the inverter
The Morningstar is "absorption" charging the batteries.
I'm using zero battery amps.
I know already I can get through one night with full batteries. The problem before was the next day, with one panel, all I could get was little battery charging during the dayand the fridge would run. The batteries wouldn't charge enough to run this "never shutting off" fridge for another night.
Now I have full battery charge voltage with the fridge running. I don't think I'll get full battery charge during the day, but I should make it two nights now maybe three...hope it never gets cloudy!