Battery power cables connected with reversed polarity or making poor contact.
Common causes
Battery power cable polarity reversedPower cable not fully seated / poor contact
What to check
STEP 1
SAFETY: De-energise system before inspecting. Check power cable polarity — positive to positive, negative to negative. Ensure cables fully and firmly seated.
Escalate if
Polarity and connection confirmed correct but fault persists — contact manufacturer
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