Warning metering

Import / export readings are reversed

Symptom: DeyeCloud shows the system exporting when the house is drawing power (or the battery charges from the grid when it shouldn't).

Most likely cause

The current transformer (CT) is directional and has been clipped on the wrong way, or onto the wrong conductor.

Fix

Locate the CT. Its arrow (or K → L) must point towards the grid / mains, away from the loads.
If it’s backwards, open the clip and rotate it 180° on the same cable — or use the meter’s CT polarity / direction setting to invert it in software.
Confirm the CT is on the main incomer (the conductor carrying total import/export), not on a sub-circuit.

Verify

Switch on a known load (kettle, oven). In DeyeCloud the flow should read import (positive) while consuming and export (negative) only when PV genuinely exceeds the load.

If there’s no meter data at all (rather than reversed data), it’s a comms problem — see external meter not communicating and smart meter wiring.