Partner Academy · Deye
Fault
F46
AC Line Under Voltage
AC grid line undervoltage
Deye service: AC Line Under Voltage (F46) — same path as F44.
Field checks
- Measure grid voltage.
- Adjust the lower undervoltage protection trip in Grid Settings if allowed.
FAQ
What does Deye F46 mean?
AC grid line undervoltage
What should I check for Deye F46?
- Measure grid voltage.
- Adjust the lower undervoltage protection trip in Grid Settings if allowed.
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.