Hisense Portable Air Conditioner units will display the error code E5 if the water reservoir is full. The water must be drained. For a detailed explanation of this process, refer to the User Guide section “Draining your air conditioner”.

E5 Error Codes

E5 is a sign that there is too much water in your system and on your floor. The reason is that the water is being sucked from the air faster than the machine can evaporate it. The system must be drained and reset. Before you do this, unplug it. After the reservoir has been empty, wipe the floor of any water and plug it in again.

Error code:E4

An error code will be displayed if the indoor fan speed falls below 200 rpm.

One of the following could be the root cause:

  1. You can block the indoor fan motor by adding something.
  2. The fan motor cord is loose.
  3. Failure of the fan motor
  4. Failure of the indoor control board

Error code:EA

The error code that will be displayed if communication between control board and display board is in trouble

One of the following could be the root cause:

  1. The connection between control board and display board is not secure.
  2. Failure of the indoor control board.
  3. Failure of the wiring to the display board.