| Code No | Title |
|---|---|
| AL30 | Control Contactor Fuse Open (24 vac) |
| AL31 | Control Circuit Fuse Open (18 vac) |
| AL32 | Air Compressor Safety |
| AL34 | Oxygen Sensor Failure |
| AL35 | Carbon Dioxide Sensor Failure |
| AL36 | A/D Converter Failure |
| AL37 | Communication Error |
| AL38 | Membrane Temperature Sensor Failure |
| AL39 | Oxygen Solenoid Valve Failure |
| AL40 | Heater Control Failure |
| AL41 | O2 Gas Calibration Failure |
| AL42 | O2 Air Calibration Failure |
| AL45 | Alarm List Failure |
| AL46 | Alarm List Full |
| AL47 | Pressure Sensor Failure |
| AL48 | Oxygen Sensor Voltage Failure |
| AL49 | Drain Valve Failure |
