What does E9 mean?

Similar to E6 and E8, this error code signifies an indoor/outdoor communication failure, usually resulting from the Ecodan being powered on before the FTC(2).

• Ecodan powered on before FTC(2)
• Faulty communication wiring
• Incorrect power sequence

Click steps to track your progress.

1. 1

   Power on the FTC(2) unit before the Ecodan unit.

2. 2

   Check communication wiring integrity.

3. 3

   Reset power to both units following the correct sequence.

4. 4

   Verify all connections.