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Question about replacing AC/Heater controls for 1983 300D
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10-16-2007, 05:08 PM
tangofox007
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Join Date: Sep 2004
Posts: 8,971
If the compressor continues to run during the hot air episodes, the evap temp regulator can be excluded as the culprit. I would check the electrical connector to the monovalve. If the monovalve loses power, it opens to the full heat position.
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