E3 - Transmitting Error (PAR W21)

What does E3 mean?

This error code indicates a transmitting error, often related to refrigerant address settings on the Ecodan system.

• Incorrect refrigerant address setting on SW1
• Communication issue with the Ecodan system
• Faulty Ecodan controller

Click steps to track your progress.

1. 1

   Check and correct the refrigerant address setting on SW1 of the Ecodan.

2. 2

   Verify communication wiring.

3. 3

   Reset the Ecodan system.

4. 4

   Consult the Ecodan manual for specific settings.