Thread: W203 A/C problem
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  #4  
Old 07-31-2002, 09:26 PM
joe p joe p is offline
it leaks, its german
  
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
The 203's have eletric stepper motors on the flaps, blend dorrs and no monovalves on the heater cores.


The system uses inputs from the interior temp sensor, sun sensor, temp dial setting, evap temp sensors,heater core temp sensors and refridgerant pressure to establish the compressor "wobble plate" duty cycle.


Odds are you have either a bad evap temp sensor, pressure sensor or ambient sensor causing this. However I seem to remember something about the AAC control units on some models.


Joe
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