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Partner Academy · Deye

Fault F53

AC Relay Stuck Fault

AC contactor/relay mechanically stuck

Deye service: AC Relay Stuck Fault — same relay-board path as F52.

Field checks

  1. Mechanical sticking or failure of the AC relay — replace the relay board.

FAQ

What does Deye F53 mean?
AC contactor/relay mechanically stuck
What should I check for Deye F53?
  1. Mechanical sticking or failure of the AC relay — 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.

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