As properly guessed, I'm back with more questions.

If I buy this unit now, I won't have be able to power it on and run it before the warm season, and over here up north, it would be a while.
Many of the sellers they give limited time 15-30 days for a return on a defective product.
Is there anything I could do to test or check the unit without opening the pool? (I fear the answer is NO)

Also if I buy it online, does Hayward honor warranty?
In case seller says deal with the manufacturer?

Thanks