Trane UPPER LAMP 14-TIME BLINK OR MORE error code

What it means

Trane's troubleshooting table labels 14-time blink or more as other abnormality and directs the technician to check the stop valve, 4-way valve, and detailed outdoor failure-mode recall.

Urgency

Likely causes

1. An outdoor abnormality is present outside the first seven indoor lamp patterns
2. The outdoor stop valve needs technician verification
3. The 4-way valve or outdoor refrigerant circuit needs service
4. Detailed outdoor failure-mode recall is needed

Homeowner fix

Turn the system off if comfort is not recovering or the outdoor unit sounds abnormal. Do not open the outdoor unit or refrigerant circuit.

When to call a pro

Call a licensed HVAC technician for a 14-time blink or higher pattern. Tell them Trane directs stop-valve, 4-way-valve, and outdoor failure-mode diagnostics.

Repair vs replace

The repair decision depends on the detailed outdoor diagnosis. Compare replacement if the result is compressor, inverter, or major refrigerant-circuit repair on an older unit.

• Trane ML Series 9,000 BTU R-410A 115V (NTXWMT09A111AA / NTXSMT09A111AA)

  ML Series R-410A

• Trane ML Series 12,000 BTU R-410A 115V (NTXWMT12A111AA / NTXSMT12A111AA)

  ML Series R-410A

For your technician

Technician note: follow Trane detailed outdoor failure-mode recall and check stop valve and 4-way valve before clearing the pattern. Page context: Trane maps this display to the ML Series R-410A line; source: Trane MyLinkDrive NTXWMT-A111A(B) Service Manual, Section 9 Troubleshooting; display convention: match the letter U, letter P, letter P, letter E, letter R, letter L, letter A, letter M, letter P, fourteen, letter T, letter I, letter M, letter E, letter B, letter L, letter I, letter N, letter K, letter O, letter R, letter M, letter O, letter R, and letter E marker exactly before comparing neighboring codes.

Which systems show it

ML Series R-410A

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

Next step