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Partner Academy · Deye

Fault F3

GFDI Failure

DC ground fault detection (GFDI) error

Deye service: GFDI Failure — PV off, earth loop, leakage sensor.

Field checks

  1. Disconnect PV and restart the inverter.
  2. If it persists, check the earthing loop and leakage-current sensor integrity.

FAQ

What does Deye F3 mean?
DC ground fault detection (GFDI) error
What should I check for Deye F3?
  1. Disconnect PV and restart the inverter.
  2. If it persists, check the earthing loop and leakage-current sensor integrity.
When should I contact Inversol?
After noting the exact code, model, SN, and operating mode, complete the field checks. If the code returns after a clean power cycle, contact Inversol WhatsApp support with a photo of the display.

Partner lookup — not a substitute for the official Deye service manual or live measurements. Firmware maps can differ by model family.

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