Partner Academy · Deye
Fault
F54
AC Relay Self-Check Failure
AC relay self-test failure
Deye service: AC Relay Self-Check Failure — same relay-board path as F52.
Field checks
- AC relay self-test failure — replace the relay board.
FAQ
What does Deye F54 mean?
AC relay self-test failure
What should I check for Deye F54?
- AC relay self-test failure — replace the relay board.
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.