Troubleshooting code

Trane 5TWV0X24A1 Alert 189.01 troubleshooting

Board temperature cutout. Use this page to document the issue and prepare for service. GreenFlow should handle diagnosis for electrical, refrigerant, lockout, or recurring conditions.

Schedule Service +1 (857) 767-6414

What the code means

Alert 189.01: Board temperature cutout

The Trane variable-speed alert table identifies BRD TEMP CO when board temperature is high enough to trigger shutdown or retry.

System area: Outdoor control board temperature
Service level: Call GreenFlow

Safe checks before calling

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.
Look around the outdoor unit for leaves, snow, ice, or other visible obstructions without opening the cabinet.
Take photos of the thermostat, outdoor unit, nameplate, and any visible flash pattern before scheduling service.

When to stop and call GreenFlow

Call GreenFlow if the code repeats, the system is locked out, heating or cooling is not restored, there is ice buildup, electrical odor, unusual noise, or any issue involving pressure switches, sensors, wiring, refrigerant, reversing-valve operation, or warranty coverage.

Share the visible code, model and serial number if available, photos, current symptoms, and whether the issue affects heating, cooling, or both.

Alert 189.01 questions

What does Alert 189.01 mean on a Trane 5TWV0X24A1?

The Trane variable-speed alert table identifies BRD TEMP CO when board temperature is high enough to trigger shutdown or retry.

What Trane message is associated with Alert 189.01?

The Trane source used for this page associates Alert 189.01 with "Board temperature cutout". Match the visible display text, LED pattern, or alert wording to the exact code whenever possible.

What system area does Alert 189.01 point to?

This code is grouped under outdoor control board temperature in the source-backed Trane troubleshooting data.

Which Trane documentation supports this Alert 189.01 page?

Source-backed Trane 5T-V0X-SF-1B-EN Service Facts variable-speed alert-code table for 5TWV0X/5TTV0X outdoor units.

Does Alert 189.01 involve a control, board, drive, or module?

The Trane source row points to outdoor control board temperature. Record the exact code and visible alert text before any reset so the control history is not lost.

What information should be captured for Alert 189.01 before clearing alerts?

Capture the exact code, any displayed alert text, the model and serial number, thermostat or control status, operating mode, symptoms, and photos of the display or LED pattern before the alert history is cleared.