Tesla · A major brand in the UK. 3 codes across 1 product family, each taken from the manufacturer’s manuals. Tesla technical support ↗
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Type the code on your display or a word from its meaning. Each code opens its own page with what it means, whether it is safe and what you can check.
3 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| arc-fault-lockout | Five Arc Fault alerts within 24 hours cause an Arc Fault lockout on Powerwall+/Tesla Solar Inverter. | Yes | Yes |
| mci-self-test-failure | Alert: MCI Self-Test Failure - string shows voltage during test then 0 V. | Yes | Yes |
| pv-isolation-total | Alert: Isolation Self-Test Failure ('PV Isolation Total' or 'PV Isolation 24Hr Lockout') on Powerwall+/Tesla Solar Inverter. | Yes | Yes |