Status code7 blinksMitsubishi
What does Mitsubishi 7 blinks mean?
Outdoor control fault: the inverter board or outdoor control board cannot read its memory. The left lamp blinks 7 times.
Call a pro: jump to when to call a pro Equipment type: mini-split
How it shows: MSZ-FS06NA through MSZ-FS18NA. Left operation-indicator lamp: 7 blinks, then 2.5 seconds off. Troubleshooting table 9-4.
Likely causes
- Inverter P.C. board cannot read its memory
- Outdoor electronic control P.C. board cannot read its memory
Safe checks for 7 blinks
- Switch off the outdoor disconnect and the breaker and leave the cabinet closed
- The manual's remedy is to replace the inverter board or the outdoor control board
Safety firstIndoor and outdoor mini-split units carry line voltage even when the remote is off. Switch off the outdoor disconnect and the breaker before you touch the unit, and do not open either cabinet. Refrigerant, wiring and control-board work must be done by a licensed HVAC technician.
Capacitors can hold a charge after the power is off. Safety terms.
When to call a pro
Seven blinks are a board fault, not a filter fault. Call a licensed HVAC technician.
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