5 fan speeds Auto Low Medium Low High Medium High Medium • For mechanical protection purposes, it is possible that the indoor unit switches itself to “Automatic fan speed” mode. • If fan stops operating, always not mean system failure. The fan can stop operating at any time. • There may be a delay between the fan speed setting made on the controller and the change actually carried out by the indoor unit. Result: Fan speed of indoor unit has changed and the controller returns to the home screen. 19