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Partner Academy · Deye

Fault F4

GFDI Ground Failure

Ground / GFDI fault

Deye service: GFDI Ground Failure — same GFDI path as F3.

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 F4 mean?
Ground / GFDI fault
What should I check for Deye F4?
  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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