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Old 08-03-2002, 03:59 PM
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Question 300 E compressor not engaging

My compressor will not engage properly. I have conducted the tests concerning the Klima relay and have found the parts good.

I have another 300E which works properly and exchanged Klima relays and still have the same problem.

If I ground either wire coming to or from the presure switch the compressor engages and cools properly.

A used push button switch was aquired after instilation the same result, the compressor does not engage.

What sensors need to be checked and how is it determined if the pushbutton switch is good or not?

Thank you,

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