Clogzz wrote:Removing and refitting the motor looks like it may turn into a circus, or a contest of swearwords.
From what I understand, faults are ‘timing’ between output cog and flap.
The reduction gears may slip, and the flap intermediate plate worn in the hex recess.
Maybe try the motor dangled outside, and grab the hex if and when it turns, to check for slipping gears.
Moving the temperature slider from cold to hot should operate the motor, because it looks like the flap mostly affects to flow from the heater.
i am hoping for an electrical fault (especially as its a citroen) then i will just wire in my own switch (somehow) and get it to work like that
unfortunately i would guess that if the unit suffered power failure it would just lock in one position not rotate freely so worn parts would be a good guess (especially with climate control where it must be constantly adjusting the flap)
i agree that the flap would seem to control hot air ingress from the heater....it could also explain why the flap does move....heater matrix heats air up around it and the hot air moves towards the cold air (opening the flap in the process).
what i wouldnt give for a simple cable operated one!!