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Deye · PV inverters · Deye SUN-SG04LP3-EU (three-phase hybrid inverter, 5–12 kW)

W31Battery_comm_warn

Name in the manufacturer's documentation (fault list): Battery_comm_warn[1]

In plain words (editorial)

Battery communication warning: the connection to the battery management system (BMS) is unstable or the BMS data is abnormal.

When to call a service technician: The BMS cable and settings are checked by the installer.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

  1. [1] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified W31 Battery_comm_warn
  2. [2] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified Abnormal battery communication
  3. [3] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified check whether the BMS connection is stable,
  4. [4] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified check whether the BMS data is abnormal
  5. [5] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified check whether the BMS connection is stable,
  6. [6] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified check whether the BMS data is abnormal
  7. [7] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 1 manufacturer document – copy from a distributor quote verified Seek help from us, if can not go back to normal state.