Trane Package Unit: 2/4WCC
Re: Control Board Lockout / Fault Codes
| Red Light Status | Description | Control Behavior |
| 1 | Ambient Temp Sensor Out of Range | Initiates a Timed Defrost every 60 min. |
| 2 | Coil Temperature Sensor Out of Range | Initiates a Timed Defrost every 60 min. |
| 3 | Low Pressure Switch Open | Goes away when LPCO closes |
| 4 | Hard Lockout - 9 Low Pressure Trips | Requires power-cycle to reset |
| 5 | Soft Lockout | |
| 6 | Too Many Defrost Cycles | |
| 7 | In Timed Defrost Mode (Check Amb Sensor) | |
| 8 | In Timed Defrost Mode (Check Coil Sensor) | |
| 9 | Low Ambient Soft Lockout | Outdoor Temp below -7 deg. |