FieldBench
Trane codes

Trane

Outdoor fan

Lockout

Failed outdoor fan

Fan not following the drive. Head pressure climbs, HPS or inverter OH follows.

Walk Outdoor fan in Diagnose

2 plates — walk the one on the cabinet

First check

1 Let it cool, then read the drive LED

On Trane XV18 overcurrent / overheat is often a dirty coil, a failed OD fan, or a locked compressor — not a dead inverter. Clear airflow, confirm the OD fan, and read the drive LED before you order a control. Command vs spin. Fan motor and drive output — there is no dual run cap to throw first.

Expect: OD fan running. Coil clean. Drive LED decoded from THIS outdoor’s card.

The rest of the walkthrough is Diagnose.

On the plates

  • Command vs spin. Fan motor and drive output — there is no dual run cap to throw first.
  • Debris, ice, seized bearing.

Plates that use Outdoor fan

Same number, other makers

Outdoor fan on Trane is not the same code on these plates.