c1 drafted · lead Sungrow SG350HX-US User Manual
- Sungrow SG350HX-US User Manual
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Fault codes › Sungrow › Sungrow SG350HX-US
Sungrow SG350HX 1470
Production
not stated
Clears
not stated
Decoded
Reports unbalanced MPPT string connection; look at PV input terminal; do: string configuration correction.
What can be behind Unbalanced MPPT string connection
Failure modes that present as the reported condition, and the tests that tell them apart.
Defined in
- Sungrow SG350HX-US User Manual — Sungrow · page 93 drafted · lead
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The manufacturer's own cause and corrective text is not reproduced here.
Same condition on other equipment
Same code in other families
Claims
defined_in
reports
c2 verified · fact Unbalanced MPPT string connection
- Sungrow SG200HX-US User Manual
tbl=35.r6h=cb0e4271c5e1
verified by: review-workflowverified on: 2026-10-23review note: support check: partial - The alarm is an MPPT connection unbalance and the fix is to connect strings to each MPPT, which roughly matches,…
has_event_class
c3 drafted · lead Warning (device continues, a condition is flagged)
- Sungrow SG200HX-US User Manual
tbl=35.r6h=cb0e4271c5e1 - Sungrow SG200HX-US User Manual
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affects
c4 drafted · lead PV input terminal
- Sungrow SG200HX-US User Manual
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review note: support check: partial - The passage concerns MPPTs having PV strings connected, which implies the PV input, but it never names the PV input terminal.
mitigated_by
c5 drafted · lead String configuration correction
Make sure every MPPT on each heatsink has strings connected; contact service if the alarm returns.
- Sungrow SG200HX-US User Manual
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applies_to
c6 drafted · lead Sungrow SG350HX-US
- Sungrow SG350HX-US User Manual
tbl=35.r5h=0b304225228b