Discrepancy in Watts graph

My system has three 50A ct’s. Below are reading taken from the AMP graph and the WATTS graph.

The kW readings from the solar and the aircon are reasonable but the hot water reading is low.

The current readings are correct.

CLIPON AMPS IOTAWATT AMPS CALCULATED WATTS IOTAWATT WATTS
CONSUMPTION 11 13.6 3260 3200
AIR CON 3.06 2.78 4100 4060
HOT WATER 15 3600 2240
SOLAR 17.1 4100 4060

I have also tried changing the input for the hot water with the same result.

Any thoughts?

You appear from down under. I’m guessing that you have three-phase and the hot water is on a different phase from your reference transformer. The docs cover how to configure derived three-phase.

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That fixed the problem.

Thank you for your assistance