FieldBench
Bosch codes

Bosch

P0

Lockout

High outdoor coil temp

T3 outdoor-coil overtemp.

Walk P0 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. Outdoor coil and inverter heat sink clean. Fan running (see E6).

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

The rest of the walkthrough is Diagnose.

On the plates

  • Outdoor coil and inverter heat sink clean. Fan running (see E6).
  • T3/TF readings in the parameter list.

Plates that use P0