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  #1  
Old 07-02-2005, 12:04 AM
apb apb is offline
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Location: Houston, Texas
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Recirc light blinks on -- what does it mean

My climate control unit flashes on/off, causing the blower fan to be interrupted. When this happens, the recirc light quickly blinks on. What is going on?
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2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)
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Old 07-05-2005, 12:27 AM
apb apb is offline
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Angry

Please help me, I am so frustrated.
After I replace the evap temp sensor, all readings are ok and there are no error codes. Blower works, aux fan works, blower regulator was also replaced. I even changed the power supply to the Climate Control unit with current from the cigarette lighter and I still have the same problem.

The CCU flickers on and off. When it happens the recirc light quickly flashes on and the settings go back to those when the car was first started (i.e. it resets itself). If happens much more when it is really hot, it also happens almost always when coming to a sudden stop. ANY, ANY clues?
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2010 GLK350
1997 E420 (retired)
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Old 07-05-2005, 01:20 AM
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Check for low bat voltage..
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  #4  
Old 07-05-2005, 10:18 AM
apb apb is offline
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Battery shows around 13.2 on the unit. Could a malfunctionning voltage regulator cause this? Thanks...
Of course, if the voltage suddenly dropped, the CCU would reset and I would not see it.
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1997 E420 (retired)
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