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Partner Academy · Deye

Fault F18

HW AC OverCurr Fault

Hardware-level AC overcurrent fault

Deye service: HW AC OverCurr — same AC overcurrent path as F15.

Field checks

  1. Check LOAD and GRID output lines for short circuits.
  2. Disconnect heavy loads and restart the unit.

FAQ

What does Deye F18 mean?
Hardware-level AC overcurrent fault
What should I check for Deye F18?
  1. Check LOAD and GRID output lines for short circuits.
  2. Disconnect heavy loads and restart the unit.
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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