Cabin heater not working - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 01-02-2017
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Cabin heater not working

I don't have any cabin heating , the air coming through is the same as the outside air. The duo valve solenoid was clicking constantly so i changed it but still no change. i am thinking its the cabin temperature sensors under the dash. i am waiting on delivery of radio removal tools so i can access , but i found the item pictures below sitting in the bottom of the center dash system. Has anybody any idea what this was part of and where i can get replacement cabin air temperature sensors from?
By the way when i disconnected the duo valve electrical connection the heat came through but its not controllable.

Thanks in advance.

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