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Gen 3 Thermostat won't turn fan on manually or when called to cool.

JSJCANCUN
Community Member

I have 4 Gen 3 thermostats and all have worked flawlessly for several years now. Today, one was found by my AC Tech to be the issue as one of my fan and coil units was not blowing, yet the compressor was turning on when called to do so. I swapped out the Thermostat and another works fine. (So NOT A WIRING ISSUE) I placed the suspect unit in the other room and it still has the same issue, no response for fan activation, but unit appears to be fully functional, even showing the fan working. No error codes, Tried full reset twice... Any thoughts on fixing? or am I looking at a new unit?  Thanks

1 REPLY 1

JSJCANCUN
Community Member

Nothing but crickets.... I hope this was an very unusual "one off" issue....

I bought a new Gen 3 and it is working perfectly.... the one that won't activate the fan in any mode is now, I guess, a lovely paperweight..