8703

Power factor of the external reactive power setpoint is invalid

SMA · SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter

What does 8703 mean?

The power factor value provided by the external reactive power setpoint is invalid. The inverter cannot correctly regulate reactive power based on this input. This is a warning that does not affect inverter behavior immediately.

Common Causes

  • Incorrect configuration of external reactive power control.
  • Faulty external control device providing an invalid power factor value.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the external reactive power setpoint source and its power factor output.

  2. 2

    Ensure the external control device is functioning correctly.

Browse all codes in this manual (29)
Verified technical data. Last updated: March 2026

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Source: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter