Tesla
Battery Comms
Powerwall Communication Lost
Gateway lost communication with one or more Powerwall units. Critical, the affected unit is not operating.
Common causes
Comms wiring fault between Gateway and PowerwallPowerwall switched off or breaker open
What to check
STEP 1
Check comms wiring terminations, polarity and daisy chain between Gateway and Powerwall.
STEP 2
Confirm the Powerwall side switch is on and its breaker closed.
Escalate if
Wiring tests good but the unit stays missing in Tesla One
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