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Partner Academy · Deye

Fault F37

AC Volt Unbalance Fault

Critical AC voltage unbalance fault

Deye service: AC Volt Unbalance Fault — utility phase skew.

Field checks

  1. Correct phase-voltage unbalance on the external utility supply.

FAQ

What does Deye F37 mean?
Critical AC voltage unbalance fault
What should I check for Deye F37?
  1. Correct phase-voltage unbalance on the external utility supply.
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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