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Partner Academy · Deye

Warning W15

Grid Impedance Warning

High grid impedance

Deye service: Grid Impedance Warning — AC terminations / cable size.

Field checks

  1. Retorque AC and neutral terminal connections.
  2. Confirm AC feeder cross-section is adequate for the install.

FAQ

What does Deye W15 mean?
High grid impedance
What should I check for Deye W15?
  1. Retorque AC and neutral terminal connections.
  2. Confirm AC feeder cross-section is adequate for the install.
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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