No heat but can see electric blend door?

Ok one of the things that can cuase this is a stuck thurmostat..one way to check it is let the car warm up to standard operating temperature leav it running lift the hood and just feel the 2 eater hoses plugged into the firewall just feel them they bothe should be hot If coolant is coming in and running through the heater core and back out to the engine if theyre both cold the the thurmostat is stuck open ...good luck let us k ow what you find.

Also somtimes the blend door acuator/cable wichever will move as normal but inside the box it might be dis connected you can dis connect it on the outside and try to move the blend doos lever by hand to see it its jammed or if you think it's doing anything at all.usually the heater stays off with the blend door closed all summer the as it starts to get a little cold outside the first time you try ti use it uts jammed sorts glues itself shut after sitting so long somtimes or just breaks inside . ..good luck