Trane Package Unit: 2/4YCC
Re: Control Board Lockout / Fault Codes
| Red Light Status | Description |
| 2 | Ignition Failure |
| 3 | Pressure Switch Fault |
| 4 | High Limit Switch or Roll-Out Open |
| 5 | Flame Sensed with Gas Valve Off |
| 6* | Rollout Switch Open |
| 7 | W2 Received Without W1 |
| 7* | Gas Valve Circuit Error |
| 8 | Low Flame Signal |
* Units with LitePort - Code 6 does not exist, Code 7 = Gas Valve Circuit Error