What 2130 Means
At start-up the M Series relay board calibrates its own voltage measurement against a reference so that it can judge the incoming supply accurately. Wolf's M Series Troubleshooting Manual logs 2130 at priority 3 when that calibration does not come out right - the board cannot fully trust its own reading of the mains.
Common Causes of 2130
- An unstable or noisy supply during the calibration window at power-up
- A reference part on the relay board drifting with age
- A relay board problem in the measurement circuit
🔧 One Safe Check You Can Try
Note whether the house has had supply trouble recently - flickering lights, a utility outage, an electrician working on the panel. Calibration problems and unstable supplies keep company.
⚠ Why You Shouldn't Go Further Than That
- Measuring the oven's incoming supply under load means working at a live 240V terminal block, which is electrician territory.
- The calibration is internal to the board and there is no setting on the control panel that influences it.
- Replacing the board without checking the supply may simply give the new board the same problem to fail at.
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.