Partner Academy · Deye
Fault
F45
AC Line Over Voltage
AC grid line overvoltage
Deye service: AC Line Over Voltage (F45) — same path as F43.
Field checks
- Measure grid voltage.
- Adjust the upper overvoltage trip in Grid Settings if allowed by the utility code.
FAQ
What does Deye F45 mean?
AC grid line overvoltage
What should I check for Deye F45?
- Measure grid voltage.
- Adjust the upper overvoltage trip in Grid Settings if allowed by the utility code.
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.