Fan control lever does not work. Also brake warning light always on.

1. Fan control lever does not have response when we moved it from "off" to other positions(1, 2, 3, 4). No air flowing and no any noise.

changing air intake lever could hear sound and working.

when put temperature control lever to "Hot", could feel a little bit warm air.

2. Brake warning light always on.
we put the parking brake at released position, I could feel it's really released. But the Brake warning light still "light on"

Thanks so much for your help in advance.