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Partner Academy · Deye

Warning W31

Battery comm warn

Energy storage communication warning

Deye service: Battery comm warn — CAN/RS485 to storage.

Field checks

  1. Check CAN/RS485 cable between energy storage and inverter.
  2. Verify CAN-H / CAN-L pinout and DIP addressing on the pack.

FAQ

What does Deye W31 mean?
Energy storage communication warning
What should I check for Deye W31?
  1. Check CAN/RS485 cable between energy storage and inverter.
  2. Verify CAN-H / CAN-L pinout and DIP addressing on the pack.
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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