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Brands · Trane / Mitsubishi ElectricTrane / Mitsubishi ElectricBrowse products, models, certificates, and support information from this brand.→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS18NA*** 6 blinksIndoor-outdoor serial-signal failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NAH*** 3 blinks / restartDischarge-temperature overheat protection→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS06NAH*** 3 blinks / restartDischarge-temperature overheat protection→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS12NA*** 1 blinkOutdoor power-system abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS18NA*** 12 blinks / restartCompressor phase-current detection failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS09NA*** 3 blinksOutdoor control-system nonvolatile-memory failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS15NAH*** 8 blinks / restartCompressor synchronous abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS18NA*** 3 blinksOutdoor control-system nonvolatile-memory failure→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MSZ-FS12NA*** 5 blinksOutdoor power-system abnormality→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS09NA*** 11 blinksStop valve or closed-valve condition→ Troubleshooting · Trane / Mitsubishi ElectricTrane / Mitsubishi Electric MUZ-FS18NAH*** 13 blinks / restartInverter DC bus-bar voltage detection failure→