3rd gen Explorer Blend Door Actuator Replacement

[Brego]

I have a 2003 Eddie Bauer Ford Explorer with dual climate. I have AC on passenger side but no heat. On drivers side I have heat but no AC. Also when I change the temperature I hear clicking under that dash. Is this the blend doors or the actuator?

 

[Brego]

It's not the

I have a 2003 Eddie Bauer Ford Explorer with dual climate. I have AC on passenger side but no heat. On drivers side I have heat but no AC. Also when I change the temperature I hear clicking under that dash. Is this the blend doors or the actuator?

it's not the actuator so any other ideas what it could be