Product troubleshooting
Trane 5TEM4B03AC31 troubleshooting and error codes
These codes are matched from manufacturer documentation to this model's series or control platform. Keep checks visible and safe; do not open electrical, refrigerant, gas, combustion, or sealed equipment compartments.
Source-backed code set
6 matched codes
| Code | Meaning | System area | Priority |
|---|---|---|---|
| MCB 2 Flash | Active sensor communication error | Refrigerant mitigation control board | Urgent |
| MCB 3 Flash | Active refrigerant leak or sensor-failure alarm | Refrigerant mitigation control board | Urgent |
| MCB 4 Flash | Past refrigerant detected alarm | Refrigerant mitigation control board | Urgent |
| MCB 5 Flash | Past sensor communication error | Refrigerant mitigation control board | Urgent |
| MCB 6 Flash | Past sensor error | Refrigerant mitigation control board | Urgent |
| MCB 7 Flash | Past sensor communication or sensor error | Refrigerant mitigation control board | Urgent |
No matching error codes found.