FieldBench
Bryant codes

Bryant

HPS

Lockout

High pressure switch open

Outdoor HPS opened — coil circuit is dead. Not an inverter pressure fault and not an L-code.

Walk HPS in Diagnose

5 plates — walk the one on the cabinet

First check

1 Let it cool, then read the drive LED

On Bryant 135SAN 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. HPS continuity, reset if manual, wiring in series with the coil.

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 fan running? Coil dirty, recirc, bent fins.
  • Subcooling vs indoor TXV sheet. Liquid-line drier / restriction.
  • Do not keep resetting HPS into a locked fan.
  • HPS continuity, reset if manual, wiring in series with the coil.
  • Outdoor airflow: dirty coil, bent fins, fan not running (see ODF / cap).
  • Overcharge or non-condensables — confirm indoor metering before you recover (SH vs SC).
  • Do not treat this as a 25VNA drive trip.
  • OD coil packed. Fan running and correct rotation on 3-phase.

Plates that use HPS

Same number, other makers

HPS on Bryant is not the same code on these plates.