Mitsubishi Electric LAST ERROR STORED status display

What it means

The remote can show the last memorized error even after the current fault has cleared. This is history, not proof that the system is still broken right now.

Urgency

Likely causes

Homeowner fix

Observe current operation and write down the stored code for the technician if service is already scheduled.

When to call a pro

Call a technician only if the same code returns during current operation or comfort is poor. Tell them the display may be stored history rather than an active fault.

Repair vs replace

This is a normal operating status, not a repair-or-replace decision.

• Mitsubishi Electric M-Series GX 9,000 BTU R-454B 208/230V (MSZ-GX09NL / MUZ-GX09NL)

  M-Series GX

• Mitsubishi Electric M-Series GX Hyper-Heat 9,000 BTU R-454B 208/230V (MSZ-GX09NL / MUZ-GX09NLHZ)

  M-Series GX

• Mitsubishi Electric M-Series GX 12,000 BTU R-454B 208/230V (MSZ-GX12NL / MUZ-GX12NL)

  M-Series GX

• Mitsubishi Electric M-Series GX Hyper-Heat 12,000 BTU R-454B 208/230V (MSZ-GX12NL / MUZ-GX12NLHZ)

  M-Series GX

Parts for this line

The parts catalog for Mitsubishi Electric M-Series GX lists 6 sourced replacement parts for this product line.

For 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 M-Series GX line; source: Mitsubishi Electric MSZ-GX/MUZ-GX R454B service manuals; display convention: match the letter L, letter A, letter S, letter T, letter E, letter R, letter R, letter O, letter R, letter S, letter T, letter O, letter R, letter E, and letter D marker exactly before comparing neighboring codes.

Which systems show it

M-Series GX

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