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No, all working great now!thank you! 

yes. After jumpering outside and the cooling mode operated perfectly.. it seemed the sub base was defective. Particulations at work perfectly up into that point. So I contacted Nest and got them to send me a replacement thermostat, replaced it and al...

Thanks for your comment!how did you go about exchanging it in warranty? 

Thank you!!Switching O & Y is a great idea!!I do have a volt/ohm meter though… how do I check continuity of O?

No spare wires… if stat is defective can I switch w another stat not base to check it?