1. Press the Emergency Button, can hear the buzzer make a “Pi” sound, in this condition, the unit will choose appropriate mode automatically. The same to AUTO mode.
2. Press the Emergency Button and keep 5 seconds, until the buzzer sound two times. In this condition, the unit running at cooling mode with high fan speed.
3. Above, these are only temporary measures. If above steps could not solve your problem, please call for service.