Partner Academy · Deye
Fault
F9
IGBT Failure
IGBT power module failure
Deye service: IGBT Failure — power module / service centre.
Field checks
- Internal IGBT power-module fault — diagnostics and board-level repair at a service centre.
FAQ
What does Deye F9 mean?
IGBT power module failure
What should I check for Deye F9?
- Internal IGBT power-module fault — diagnostics and board-level repair at a service centre.
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.