Check first
- Which reading is impossible, exactly? One wrong figure implicates its sensor; all of them wrong implicates the sensing chain at the grid point.
- Cross-check against physical truth — utility meter, a clamp meter, the sun.
- Any alarm alongside? A flow oddity plus an alarm string is that alarm’s flow first.
Displays report; they rarely lie on their own. A wrong flow is almost always a wrong
input — CT, meter or comms — not a wrong screen. Fix the sensing, and the picture fixes
itself. If a reading stays impossible after the sensing chain is proven, capture photos and
escalate rather than reinterpreting the screen.
Escalate when
- A physically-proven sensing chain still yields an impossible reading.
- Flow anomalies coincide with internal-fault codes — the code’s flow leads.