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Old 01-04-2015, 05:45 PM   #1
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AC Won't Turn Off

My dash AC stays on regardless of the switch setting. The compressor appears to stay engaged. It's a 2006 HR with Workhorse 8.1. Where do I Start??? Thanks for any help.

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Old 01-04-2015, 07:47 PM   #2
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First step would be to look for a relay in the system that is possibly stuck.
If no luck finding a relay , have a good look around for a company name on the A/C heater box housing . Denso & Evans are common names of heater and A/C systems for Class A , motor homes. If you can find a name then a visit to the company web sites will provide more info on tracking the problem down.

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Old 01-05-2015, 05:41 AM   #3
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Checking for 12 vdc to the clutch will point you in the direction of a bad compressor or control circuit
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Old 01-05-2015, 06:37 PM   #4
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You should be able to pull the clutch's connector. If it still spins, replace the clutch.
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