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1987 Porsche 928
No signal from HVAC control box. Replaced relay. If relay is jumped HVAC works. Supply 12v to trigger relay, system works. Internal sensor on fan?
Monday, March 28th, 2011 AT 3:51 PM
No testing info is availbe from the manufacturer, I do have the wiring diagram if you need it, post your email and I will send it.
Monday, March 28th, 2011 AT 5:17 PM
to post a reply.
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