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Terpfan11
Community Member
since ‎07-09-2023
‎07-16-2023

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E74 cod. No power rH wire

07-09-2023
For 8 months my nest thermostat has working perfectly fine. Now it has the e74 error code and nothing is working. I’ve charged the thermostat, detached and reattached the rH wire. Not sure what else to do. It’s summer so ac is sort of a requirement.