Fehlercodes: E05_Mini_ECOi

Error in Indoor Unit Transmitting Signal to the Outdoor Unit

1. Error Detection Method
It is judged an error when a unit itself cannot receive a signal that it has sent.

  • Indoor unit control PC board error
  • The setting of the terminal resistor select switch on the outdoor unit main PC board is set incorrectly.
1
Indoor unit control PC board 
1-1 Is the indoor/outdoor operation line connected to more than one outdoor unit? (Network wired?) Yes 1-2
No 1-3
1-2 Is the SHORT on the terminal resistor select switch on the outdoor main PC board set to one unit, and the others are OPEN? Yes 1-4
No Set the SHORT to one unit only
1-3 Is the terminal resistor select switch on the outdoor main PC board set to OPEN? Yes Make the SHORT setting
No 1-4 
1-4  Is the indoor/outdoor operation line opened or shorted? Yes Correct the wiring
No 1-5
1-5 Replace the indoor unit control PC board.

For information on the procedures for replacing the indoor unit’s control PC board, refer to the manual that is packaged withthe indoor unit service board.