2005 220 cdi diesel air con

[jamie weeks]

the climate control seems very sensitive,i.e. three clicks up form cold and it blows hot,there seems to be no happy medium.cars I have had before the climate has been set to say 19 and it does the rest automatically,but this car seems ultra sensitive to adjustment,are they all the same ?

 

[waterman69]

My 2004 220cdi is exactly the same, hot or cold, not much inbetween.

 

[jim_bob567]

Mine is the same, it only blows cold on 'lo' setting if I set temp to 17 or above on either driver or passenger side it blows hot air, not warm, but red hot air even with a/c switched on... It may be because I swapped my thermatic unit to a thermotronic one, but even after replacing the unit with the original one and performing a normalising reset it seemed to make no difference, any ideas people?

 

[Stratman]

I'm sure you're aware that the temperature you set on the dials is the target temperature for the cabin, not the temperature of the air from the blowers. If there is a big difference between the current and target temperatures, the microbrain may well blow full hot or full cold until the cabin is a bit closer to the target.

Of course it could be one or more of the air distribution flap rods have broken or become detached, a fairly common occurrence.

 

[m2mb]

a/c cabin sensor. if faulty the "air mixer" does not get the correct instructions so...