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Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS09NAH*** 16 blinksFour-way valve or pipe-temperature abnormality→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MUZ-FS18NA*** 12 blinks / restartCompressor phase-current detection failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NA*** 12 blinks / restartCompressor phase-current detection failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NA*** 2 blinks / restartOvercurrent protection→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS15NA*** 1 blinkOutdoor power-system abnormality→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MUZ-FS06NA*** 16 blinksFour-way valve or pipe-temperature abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MSZ-FS15NA*** 14+ blinksOther outdoor or thermistor abnormality→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MUZ-FS06NAH*** 2 blinks / restartOvercurrent protection→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MSZ-FS06NA*** 5 blinksOutdoor power-system abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MSZ-FS18NA*** 4 blinksIndoor control-system failure→ Troubleshooting · Mitsubishi ElectricMitsubishi Electric MSZ-FS12NA*** Solid lampOutdoor control-system nonvolatile-memory failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MSZ-FS06NA*** 4 blinksIndoor control-system failure→