Rust stains from Fisher Paykel washing machine
I found a used FP washing machine for $400, was told it was just purchased from Lowe's for more than $1000, was working perfectly and had no damage. The young man was selling it for his mother who could not afford to keep it due to her divorce. Bought it for $350. Got it home and ran the cleaning mode and happily washed our sheets. They came out with huge swaths of reddish brown stains. I washed again thinking that might fix it. Tried "Shout". No luck, Then tried "Whink", a rust remover. Whink, which I believe is an oxalytic acid, is helping remove the stains so I think the machine is depositing rust on my linens.
The serial number is AIU756671, Model #WL26CW2. Lowe's no longer sells this machine.
Is there anything I can do to solve the problem? Is it a relatively new machine?
The seller says they will not take it back and will not refund my money.
I thought the young man was honest but am not sure this is possible.
All suggestions are very welcome.
Thanks for any help you can give me.