Product troubleshooting
Trane 5TDM5B03AC21 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
12 matched codes
| Code | Meaning | System area | Priority |
|---|---|---|---|
| Refrigerant indicator 1 flash | Indoor unit refrigerant leakage protection | Refrigerant leakage protection | Urgent |
| Refrigerant indicator 2 flashes | Refrigerant sensor error | Refrigerant sensor | Urgent |
| Refrigerant indicator off | Refrigerant sensor communication error | Refrigerant sensor communication | Urgent |
| Communication indicator steady | Communication error | Indoor communication | Urgent |
| Running 3s 1 flash | Indoor/outdoor communication or jumper cap failure | Indoor and outdoor communication | Urgent |
| Running 3s 2 flashes | Indoor fan failure | Indoor fan | Urgent |
| Running 3s 3 flashes | Electric heat adhesion protection | Electric heat protection | Urgent |
| Running 6s 1 flash | Indoor ambient temperature sensor error | Indoor ambient sensor | Service |
| Running 6s 2 flashes | Indoor pipe temperature sensor error | Indoor pipe sensor | Service |
| Running 6s 3 flashes | Indoor air outlet temperature sensor error | Indoor outlet air sensor | Service |
| Running 6s 4 flashes | Evaporator inlet pipe temperature sensor error | Evaporator inlet sensor | Service |
| Running 6s 5 flashes | Evaporator outlet pipe temperature sensor error | Evaporator outlet sensor | Service |
No matching error codes found.