Midea Aircon Blinking Light Patterns

Learn what common Midea blink patterns mean, what typically causes them, and whether they need urgent attention.

Midea blink guide

This is a guidance table, not a model-exact diagnosis. Pattern meaning can vary by controller and series. Use this page to narrow next steps, then verify with model sticker details.

Safety warning

Stop using the unit and contact a technician if the breaker trips repeatedly, you smell burning, see sparks, hear loud electrical buzzing, or water is leaking from places it normally should not.

Search blinking light patterns

Blink count: 1

Operation lamp flashes 1 time repeatedly while timer lamp remains off

EEPROM parameter corruption · Indoor control memory fault · PCB data-read error

Blink count: 2

Operation lamp flashes 2 times repeatedly while timer lamp remains off

Indoor-outdoor communication loss · Interconnection wiring issue · Indoor or outdoor PCB communication fault

Blink count: 5

Operation lamp flashes 5 times repeatedly while timer lamp remains off

T1 sensor open/short · Sensor wiring/connector fault · Indoor PCB sensor-input issue

Blink count: 6

Operation lamp flashes 6 times repeatedly while timer lamp remains off

T2 sensor open/short · Sensor harness fault · Indoor control-board input fault

Blink count: 8

Outdoor module LED5 stays ON while LED4 flashes 8 times, pauses ~1 second, then repeats

Inverter module protection trigger · Outdoor power-stage stress · Drive module abnormality

Blink count: 9

Outdoor module LED5 stays ON while LED4 flashes 9 times, pauses ~1 second, then repeats

DC bus low-voltage event · Power supply instability · Outdoor drive/power circuit fault

Blink count: 10

Outdoor module LED5 stays ON while LED4 flashes 10 times, pauses ~1 second, then repeats

DC bus over-voltage event · Power surge condition · Outdoor power-stage abnormality

Blink count: 12

Outdoor module LED5 stays ON while LED4 flashes 12 times, pauses ~1 second, then repeats

Inverter control error (MCE) · Drive command/frequency mismatch · Outdoor module control fault

Blink count: Persistent or continuous

Green lamp blinks repeatedly for minor airflow/efficiency alerts

Dirty air filters · Temporary indoor-outdoor communication glitch · Reduced cooling efficiency state

Blink count: Persistent or continuous

Red lamp blinks repeatedly as serious system warning

Compressor fault · Overheating/protection trigger · Electrical or wiring fault

Blink count: Persistent or continuous

Yellow/orange lamp blinks repeatedly as maintenance or drainage alert

Blocked drainpipe · Indoor water leakage path issue · Sensor malfunction

Not sure how to read your Midea blink pattern?

Send a short blink video and your model sticker. We'll advise the next step before any work is recommended.

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Other diagnostic tools

If your unit shows an error code or a different problem instead, try a different starting point.

Error codes

Display showing a code? Look up what it means for your brand.

Aircon problems

Diagnose a specific problem like no cooling, water leak, or noise.

Midea brand hub

Guides, resources, and model info for Midea aircon.

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