Trane UPPER LAMP 5-TIME BLINK error code

What it means

Trane's troubleshooting table lists this pattern as outdoor power system abnormality. The manual says the compressor stops for overcurrent protection or startup-failure protection within one minute after startup, and the condition has occurred three consecutive times.

Urgency

Likely causes

1. The compressor repeatedly stopped on overcurrent protection
2. The compressor repeatedly failed startup protection
3. The outdoor stop valve needs technician verification
4. The inverter, compressor, or outdoor power circuit needs service

Homeowner fix

Turn the system off. Do not keep resetting it, and do not open the outdoor unit.

When to call a pro

Call a licensed HVAC technician for a 5-time blink. Tell them Trane maps it to outdoor power-system abnormality and compressor overcurrent or startup-failure protection.

Repair vs replace

Outdoor power-system repairs can be significant. Compare repair with replacement if the diagnosis includes compressor or inverter replacement on an older out-of-warranty 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: check stop valve position and follow Trane outdoor inverter, compressor, and outdoor service diagnostics for repeated overcurrent/startup protection. Page context: Trane maps this display to the ML Series R-410A line; source: Trane MyLinkDrive NTXWMT-A111A(B) Service Manual, Section 9 Troubleshooting.

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