Hey Bin,
If you havent done this before, then follow this, shutdown the Valve first then open the faucet from both sides upwards and downwards. If you still need more information you can possibly get ... read more
Cindy/Linda -
Looks like a seal failure to me, which may be covered under a manufacturer warranty for the glass but probably not the labor to install it. From the unused replacement grille holes in t ... read more