Cold air, Hot air from different sides of vents

[Dave993T4]

Morning.
My 2020 Transit Custom has just started blowing Cold AC air from drivers vents and warmer air from passenger vents.
This is with the AC on by the way.
I`ve researched this and it looks like it could be the Temp Blend door unit failing.
Is this something i can do or has it got to be taken to a garage, this would be ok, but rather do it myself.
Any help would be appreciated.
Regards.
Dave.

[Altransit]

There's a useful thread here, created by our sadly departed forum legend. It may give you a laugh, but there is information too

viewtopic.php?f=5&t=163776&hilit=heater+servo&start=0

[Dave993T4]

Thats great, thankyou for the reply to my post.
Much appreciated.

[sherwoodcycles]

The previous owner of my van, had run Radweld or similar through the system. Rather than just changing the thermostat and housing. ........all the pipes were 'crunchy' inside. Like a scab, I couldn't help but scrunch the pipes. To my dismay, all the built up stuff inside went straight into my heater matrix and partially blocked it. So I have a variemation in the outputs of mine. (Non AC)