What AC / AC6 Means
AC and AC6 are communication errors on the Samsung DW80T5040US-series service manual’s check-code table: AC is a break in communication between the main control board and the sub board behind the touch panel, and AC6 is the same kind of break between the main board and the inverter board that drives the wash motor. Both are separate from the general CE communication error on Samsung’s US dishwasher help article. This applies to the DW80T5040US series and other StormWash-family dishwashers built on the same control platform.
Common Causes of AC / AC6
- Loose or unseated wiring connector to the sub board or inverter board
- Main control board, sub board, or inverter board communication problem
🔧 One Safe Check You Can Try
Turn the dishwasher off, then switch it off at the breaker for about a minute before restoring power and starting a cycle again. Note whether AC or AC6 comes back, and how soon, since that detail helps narrow down which board connection a technician should check first.
⚠ Why You Shouldn't Go Further Than That
- The boards this code points to sit behind the dishwasher’s outer door panel and require disassembly to reach and test — that is technician work.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.