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Manufacturer diagnostic code

Back to all Bryant 926TC36040V17*D codes

Bryant 926TC36040V17*D 31.3 troubleshooting

High Heat Only or next-cycle HPS failed to close. Document the displayed code and operating conditions before scheduling service.

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What this code means

The high-heat pressure switch did not close within the required transition time.

Code
31.3
System area
High-heat pressure switch
Priority
Urgent
Applicable code set
Bryant 926TC furnace status codes (revision 01)

Safe checks

  • Confirm the thermostat is on, set correctly, and calling for heating or cooling.
  • Check the air filter and visible return-air path for obvious airflow restrictions.
  • Record the displayed code or flash sequence before scheduling service.

First step

Record the code, avoid repeated reset attempts, and schedule GreenFlow service.

Frequently asked questions

What does 31.3 mean on a Bryant 926TC36040V17*D?

The high-heat pressure switch did not close within the required transition time.

What should I safely check before scheduling service?

Use only the visible, non-invasive checks listed on this page. Do not open equipment panels.

When should GreenFlow handle this code?

Call GreenFlow if the code repeats, the equipment is locked out, heating or cooling is not restored, or the condition involves gas, ignition, pressure, wiring, a motor, or a control board.

Manufacturer source document