What E 33 / E 73 Means
E 33 and E 73 mean improper voltage output from the filter board in the three-zone module. Like E 32, it is an internal supply problem; the service action checks connections, then the filter board.
Common Causes of E 33 / E 73
- Filter board output out of range
- Connector problem on the filter board
🔧 One Safe Check You Can Try
Reset at the breaker for 30 seconds.
⚠ Why You Shouldn't Go Further Than That
- Internal supply boards carry line voltage.
- The module has to be reached from under the counter or by lifting the cooktop.
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.