FieldBench
Bosch codes

Bosch

P3

Lockout

Compressor overcurrent

Inverter current out of band (tonnage-specific trip on the IDS card).

Walk P3 in Diagnose

Sign in for the next measurement

First check

1 Let it cool, then read the drive LED

On Bosch BOVA 2.0 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. Valves open, coils clean, outdoor fan running, outdoor <125°F.

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

The rest of the walkthrough is Diagnose.

On the plates

  • Valves open, coils clean, outdoor fan running, outdoor <125°F.
  • Overcharge and a locked compressor both P3 — weigh-in and windings before you order a drive.

Plates that use P3