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Nest E195 error - no power to R wire all of a sudden

Elleclouds
Community Member

I ran my heat the day before yesterday for the first time probably ever.  Yesterday I went to run it again and got an E195 error saying no power to Red wire.  I check the condensation safety trip, it was bone dry, the water pan was bone dry.  I did vacuum out alot of black gunk from the line till it was clear but there was still not success.  Today I will check the fuse, but my HVAC system is in the attic and I wanted to see if there was anything else I could try to fix this error?

1 REPLY 1

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

@Elleclouds 

Check the fuse on the control board in the furnace/air handler

 


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