Water leaks from your split air conditioning can be due to poor maintenance, under capacity, blocked condensate tray, drip tray, condensate hose.
Air conditioning has the capacity to dehumidify the air in the room. Therefore there will be an accumulation of condensation within the machine into a condensate tray, then onto a hose that drains out through the wall.
Leaks can happen for a number of reasons.
a) Make sure your air conditioning capacity is right for the room size can. If the room size is too big, excessive condensation will build up within the machine.
b) blockage in condensate tray and hose. If the drain line gets clogged with dirt and dust or mould, the water backs up into the machine. In this case, you'll have get it serviced by an engineer.
c) The bottom drainage outlet plug is not fastened securely causing condensation to leak. (You can find the plug at the rear of the air conditioning, normally at the bottom or engineer job)
d) The flow of the hose should be towards a downward direction to avoid water leaking back to the bottom tray. Visually inspect the external part of hose outside the wall.
e) Excessive dust on the filter can cause leaks too, make sure the filters are cleaned regularly and we recommend that you clean in every 2 weeks.
All split air conditioning must be serviced at least once a year.