If you mean the blower only goes in the high mode check the blower resistor located in the plenum under the wiper module.
Which one, the high tone or low tone?
Check the blower motor resistor
it is the blower motor resistor. it works on high because on high it bypasses the switch
That is usually a failed blower resistor.
Turn signal stalk.
Wiring, clock spring, or switch malfunction.
The high pressure AC switch on a 2002 Chrysler Sebring is located on the passenger side of the engine bay. It is paired with the low pressure hose and is mounted near the coolant and power steering reservoirs.
fuse, bulbs or switch
On the turn signal indicator arm. Switch on the headlights, make sure the high beam is off, then pull out the rotating light switch.
Bulbs, fuse, wires ,switch.
Bad blower resistor? Bad low speed relay? Bad switch?
Blower resistor must not be functioning properly. It should be replaced