Hi, Thank you very much, for your help.
I just ask you a question for Whirlpool Washer, M#: WTW6700TW1
I forget to tell you some symtoms:
When start to turn on the washer, start to fill in water,
one of water valves to fill in water will make noise,
about 30 seconds, then washer stop, show "F1"
some time the washer will working ( very seldom )
could be water pressure senser problem ?