RE: brand new Carrier Infinity 18 A/C unit (38TDB037).

Just wondering if anyone with this unit has seen this:

1. Outdoor unit is leaking something out of the bottom periodically which, because I have it mounted on brackets, has killed all the grass beneath it. It certainly is not water, feels oily-like.

2. Outdoor unit in LOW speed mode causes unit to vibrate heavily and causes a loud electrical humming which can be heard inside the house. In HIGH speed mode, it's very quiet.

We're getting cooling, but I still reported these to the installer and am awaiting their response.

Any advice would be appreciated.