Turn your air conditioner off at the mains switch or isolator.
Leave the air conditioner off for at least 20 minutes and then switch back on.
Check if the operation lights have stopped flashing.
See if the unit will turn on and begin the air conditioning cycle.
Run the air conditioner for about 20 minutes and check that no error codes occur on the wall controller.
If in summer, check that cooled air conditioned air is coming out of the vents.
If in winter, check that warm air conditioned air is coming out of the vents.
If the problem still occurs, please contact Leumeah Air Conditioning for a diagnosis service.

The air conditioning unit won’t turn on and the green (or red) operation light is flashing?