U: Phase Harness / All System Controllers - freightliner Park Smart Technical Information

A fully integrated electrical temperature management unit
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All system controllers!
Attention: Removing the phase harness for testing
Operating the system for troubleshooting purposes with the phase harness disconnected can result in a
locked out system.
With no active fault codes, the controller should always attempt to start the compressor up to 10 times in
a period of approx. 2 minutes; even when the phase harness is disconnected. If the controller does not
see the compressor start after 10 attempts, it will time out and stop sending voltage to the compressor.
The controller will remain in locked out mode until power is cycled. Please make sure the time does not
expire during the test procedure. If necessary, cycling the power switch off and back on will reset the
controller. NOTE: "The compressor could take up to 2 minutes to start up after the power switch has been
cycled.
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