Trane Package Unit: YCH
Re: Ignition Lockout Codes
Trane YCH package units are multi-stage gas/electric units.
| Light Status | Description |
| OFF | No Power/Internal Failure |
| ON | Normal/No Call for Heat |
| Pulse | Normal/Call for Heat |
| 1 | Communication Loss |
| 2 | Lockout - No Flame Sensed (3 tries) |
| 4 | High Limit (TCO) Open |
| 5 | Flame Sensed with Gas Valve Off |