I’ve paid back my emergency credit, but my electricity prepayment meter (not smart) still says 'DEBT'

Your meter will still show debt if you didn't put enough credit on your key to cover:

• The emergency credit you've used
• Any standing charges or debt repayments you've missed while using your emergency credit
• Any friendly non-disconnect energy you might have used before accessing your emergency credit (not all prepayment meters have this service)