warning Relion

Error Code E00

Battery has been replaced. Check that the time and date are set correctly.

? What Causes This

The battery was recently changed, which may require a recheck of the system settings.

How to Fix It

After changing the battery, check and verify that the time and date settings on the meter are correct.

Source: page 71 of the official manual

From the manual

Manual page 71 — Relion error E00

This error code appears in:

Relion Premier Classic