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Partner Academy · Deye

Fault F12 / F31

AC SlaveContactor Fault

Auxiliary AC contactor failure

Deye service: AC SlaveContactor Fault (F12 / F31).

Field checks

  1. Auxiliary contactor fault — contact service for replacement.

FAQ

What does Deye F12 / F31 mean?
Auxiliary AC contactor failure
What should I check for Deye F12 / F31?
  1. Auxiliary contactor fault — contact service for replacement.
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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