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Partner Academy · Deye

Fault F48

AC UnderFreq Fault

AC grid under-frequency fault

Deye service: AC UnderFreq Fault — same frequency path as F47.

Field checks

  1. Measure grid frequency, or set generator shaft speed for 50 Hz if on genset.

FAQ

What does Deye F48 mean?
AC grid under-frequency fault
What should I check for Deye F48?
  1. Measure grid frequency, or set generator shaft speed for 50 Hz if on genset.
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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