HVAC Issue only cold or hot air, nothing in between

[voltch]

Original issue was that my vent control solenoid (the one that controls moving air from floor, to vent, to defrost) was stuck.

I worked on the wrong soleniod and damaged the tabs on the (temperature control) solenoid after opening it up, and then replaced it with a new one.

As far as my original issue where the vent control solenoid was bad, I replaced that solenoid too.

Now I am only getting heat when I put on HI, and AC when I put on low. Any temperature in between isnt working. So for example I can only get 85 degrees of heat or 60 degrees of cooling, but nothing in between.
Is there a way to reset the HVAC system or are there some more troubleshooting steps that I can do to resolve the issue?
When I replaced the heat control solenoid, I put it in the same position as the old one (there is a key and it only allows it to fit in one positon)
Also before all of this happened , I was able to select different temperatures, so I feel either something needs to be reset, something is in the wrong position somehow, or somehow the new solenoid has an issue.

Re

Genuine Ford AA5Z-19E616-C​

 

[peterk9]

As far as I know, there is no way to "reset the HVAC' system". When you get the heat or A/C, are you able to direct the air flow using the various vent settings?

Peter

 

[voltch]

As far as I know, there is no way to "reset the HVAC' system". When you get the heat or A/C, are you able to direct the air flow using the various vent settings?

Peter

Yes, I can change from

As far as I know, there is no way to "reset the HVAC' system". When you get the heat or A/C, are you able to direct the air flow using the various vent settings?

Peter

Yes, I can direct the air flow from Vent, Defrost, Floor, Etc. The strange thing is that now I am also not being able to control the air flow in the reare rear. The rear Vent controls are no longer changing the airflow in the rear and I have not touched any solenoid related to the rear. I may go in and put the old temparature solenoid back in this weekend to see if that fixes anything.