Mitsubishi Electric / MXZ-D Ported Multi-Zone
Mitsubishi Electric LED1 5 BLINKS AND LED2 LIT status display
This MXZ-D operating indication means cooling high-pressure protection is active while the unit operates. The manual frames it as not automatically abnormal.
- Urgency
- informational
- Verified
- Jul 30, 2026
- Fix path
- Not an error
What it means
This MXZ-D operating indication means cooling high-pressure protection is active while the unit operates. The manual frames it as not automatically abnormal.
Urgency
Not an error
This is a normal status indication, not an error, unless comfort is poor or the indication never clears.
Likely causes
Homeowner fix
Check filters, indoor airflow, and outdoor clearance. Call for service if it repeats or the unit stops cooling.
When to call a pro
No technician is needed for this status by itself. Call for service only if comfort is poor, water is present, or the indication never clears after conditions change.
Repair vs replace
This is a normal operating status, not a repair-or-replace decision.
Your Mitsubishi Electric model
MXZ-D Ported Multi-Zone model pages in the Mitsubishi Electric catalog help compare this repair path with current replacement options.
- Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
MXZ-D Ported Multi-Zone
- Mitsubishi Electric MXZ-D Ported Multi-Zone 3-Zone 24,000 BTU R-454B 208/230V (MXZ-3D24NL)
MXZ-D Ported Multi-Zone
- Mitsubishi Electric MXZ-D Ported Multi-Zone 4-Zone 30,000 BTU R-454B 208/230V (MXZ-4D30NL)
MXZ-D Ported Multi-Zone
- Mitsubishi Electric MXZ-D Ported Multi-Zone 5-Zone 36,000 BTU R-454B 208/230V (MXZ-5D36NL)
MXZ-D Ported Multi-Zone
Parts for this line
The parts catalog for Mitsubishi Electric MXZ-D Ported Multi-Zone lists 9 sourced replacement parts for this product line.
Open parts pageFor your technician
Technician note: status display only; confirm normal operation or clear stored history after service if needed. Page context: Mitsubishi Electric maps this display to the MXZ-D Ported Multi-Zone line; source: Mitsubishi Electric MXZ-D R454B outdoor unit service manual; display convention: match the letter L, letter E, letter D, one, five, letter B, letter L, letter I, letter N, letter K, letter S, letter A, letter N, letter D, letter L, letter E, letter D, two, letter L, letter I, and letter T marker exactly before comparing neighboring codes.
Which systems show it
MXZ-D Ported Multi-Zone
Related troubleshooting
Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.
Related codes
Source
- Document
- Mitsubishi Electric MXZ-D R454B outdoor unit service manual