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Trane · Air handler troubleshooting

Reading and clearing fault history - Trane P0V0 modular blower

What is going on

Same button logic as the furnace control, on the modular blower control.

Likely causes

  • Old faults stored in memory

Check in this order

  1. Scroll with Menu to 'err' for active alarms or 'L6F' for the last 6 faults, press Option to enter.
  2. Hold Option at least 5 s inside L6F to erase; three dashes 3 times confirms.
  3. Factory reset at idle hold Menu + Option 15 s until 'FD' flashes 3 times.
  4. Run test (run menu) cycles the blower at 1st then 2nd stage compressor airflow for 30 s each, three times; it does not start the outdoor unit and takes about 70 s to begin.

Applies to: Trane P0V0 modular blowers (P0V0A/B/C/D)

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Source: Trane 18-GE20D1-1E-EN - section Fault Code Recovery / IMBC Menu. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.