If you see water leaking from the Air con unit it is possible that the machine is working too hard and producing excess water as a result.
This is possibly due the machine being turned to a level that it is-unused to being at, ( ie - if it is set to a lower temperature during the summer months).
We have been told by Aerocool that if you just switch the machine off for 30 mins it will stop producing excess water and thus stop the leakage.
please try this if you ever see a leak. if this fails then please report using Freshdesk.