Heater circulation UP & Down - knob lower dashpanel...

[MischaV8]

Goodmorning all,

Questions regarding a.m. matter...the lower dashpanel knob for UP and DOWN air circulation does not work (temp knob also not working but i know this is related too heatervalve not connencted - now full hot) the other 2 are working correctly...

How does this UP & Down circulation work? Where is the flap to control this (inside heater box?) and is this knob not working related to the heater ecu control unit? Thanks for yr help in advance...

[MischaV8]

Thanks for yr reply....i have seen this article and it is regarding temp control via heatervalve and temp knob lower dashpanel (synchronisation)....

i have another issue with the air regulation knob for up and down - window or feet circulation unfortunately

[MischaV8]

Many thanks Roger for this info very detailed, i can transfer this onto my car it is lhd btw but i"ll mirror yr info!