3 documented codes extracted from AGA factory service documentation, grouped by appliance type. ServiceON holds current factory authorization for AGA.
| Code | What the control is reporting |
|---|---|
| E0 | Flow control positioning warning No |
| F0 | SW fill limit reached Warning |
| F1 | SW Safety level reached ack Yes |
A fault code identifies what the control detected, not which part failed. A sensor error can be the sensor, the harness, the connector, or the board reading it. Many AGA appliances have no diagnostic display at all — mechanical valves, thermocouples and spark ignition report nothing. If yours shows no code, describe the symptom when you call.