Solis S6-EH3P (5-10K)-H + BYD Battery-Box Premium HVS

Closed-loop compatibility, protocol setting and cabling. Best status: verified closed loop.

Field-sourced data. Verify against the current official manual and firmware before commissioning — a wrong setting can damage equipment.

CAN Verified closed-loop confidence: high

Protocol: BYD CAN
Inverter setting: Battery type = BYD HV (Lithium HV); HMI ≥ V01-1B; configure BYD firmware in BeConnect first
Battery / DIP: BYD BMU pins 1&2 → Solis COM/CAN pins 4&5 (try option A/B, may reverse 1/2); ground the CAN; Cat6+

BYD BMU ↔ Solis COM/CAN (use Cat6 or higher — the cable included with the S6 is NOT suitable for BYD; ground the CAN)

CAN, Cat6+

Allow up to 15 min for first battery recognition; full shutdown ≥ 2 min between attempts.

Code	Cause	Fix
CAN COMM Fail	Wrong cable/pins/grounding or unconfigured battery firmware	Use Cat6+; verify BYD 1/2 ↔ Solis 4/5 (option A or B, reverse 1/2); ground the CAN; confirm firmware in BeConnect

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