The AC unit is a heat pump with propane heat. The make is a Trane heat pump. This year I turned on the AC unit and no air is blowing out of the vents. Cleaned the filter, checked the composer out side and every thing is running. The downstairs is colded but the upstairs is hot about 85 decrees. What do you think is the problem?

Is the blower running on the furnace? Is there a damper in the ductwork anywhere?

The bloweer not that I can hear or see. And no damper in the ductwork

So, the outdoor unit is running, but no indoor blower, correct?

What model is the furnace?

Traine XE90. II turned the unit back on and some air is coming out now. Very little. There is a red blicking light in the port windows on front of the unit.

The red blinking light is a code, somewhere on the blower door there will be a sticker telling you what that code means. You may have a bad blower. Does the blower continue to run? Or does it eventually shut off?

Is it possible that there is something blocking your return air grille?