Trane Error Codes

Trane error codes verified against official Trane support pages, owner's manuals and manufacturer service charts, by appliance.

• Trane furnace error codes
• Trane ac & heat pump error codes

All code pages

Trane furnace E04 (open thermal limit) Trane furnace E3.2 (open pressure switch, 1st stage) Trane furnace E2.1 (retries exceeded (flame never sensed))