PV-inverter communication alarm — Returns after manual reset (EME20)

What does PV-inverter communication alarm mean?

The EME20 accessory reported a communication error with a PV-inverter, and this alarm would reappear even after being manually reset on the display. This indicates a persistent underlying communication issue.

• Intermittent communication fault with the PV-inverter.
• Software bug in EME20 causing alarms to re-trigger falsely.
• Loose wiring or connection between EME20 and the PV-inverter.
• Issue with the PV-inverter itself.

Click steps to track your progress.

1. 1

   Verify all communication cables between the EME20 and the PV-inverter are securely connected.

2. 2

   Check the PV-inverter's display or companion app for any specific error messages.

3. 3

   Power cycle both the EME20 accessory and the PV-inverter.

4. 4

   Update the NIBE SMO 20 firmware to version 8700R2 or later to prevent false re-triggering of the alarm.