FoxESS
ECS: Cell 0V
Cell 0V Fault — Dead Cell or Broken Sense Wire
One or more cells is reading 0V. Either the cell has failed or the sense wire is broken.
Common causes
Dead or failed battery cellBroken cell voltage sense wireBad contact on BMS connector
What to check
STEP 1
Do not attempt to charge. Check if the battery has been subject to deep discharge or physical impact
STEP 2
Inspect BMS connector on the affected CS module for damage or corrosion. Report to service.uk@fox-ess.com with battery model and serial number
Escalate if
Always escalate — risk of thermal event. Do not operate until inspected
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