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Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS09NAH*** 17 blinksOutdoor refrigerant-system abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS09NA*** 5 blinks / restartHigh-pressure protection→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NA*** 13 blinks / restartInverter DC bus-bar voltage detection failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS06NAH*** 12 blinks / restartCompressor phase-current detection failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS09NA*** 1 blinkOutdoor power-system abnormality→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MSZ-FS12NA*** 14+ blinksOther outdoor or thermistor abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NAH*** 1 blinkOutdoor power-system abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS18NAH*** 1 blinkOutdoor power-system abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NAH*** 12 blinks / restartCompressor phase-current detection failure→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MUZ-FS18NAH*** 8 blinks / restartCompressor synchronous abnormality→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MSZ-FS15NA*** 2 blinksIndoor coil or room-temperature thermistor failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MSZ-FS18NA*** 1 blinkMiswiring or serial-signal failure→