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Partner Academy · Deye

Fault F35

AC NoUtility Fault

No grid utility voltage detected

Deye service: AC NoUtility Fault — GRID present? main breaker?

Field checks

  1. Confirm utility voltage is present at the AC infeed.
  2. Check the position of the incoming grid breaker / isolator.

FAQ

What does Deye F35 mean?
No grid utility voltage detected
What should I check for Deye F35?
  1. Confirm utility voltage is present at the AC infeed.
  2. Check the position of the incoming grid breaker / isolator.
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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