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Sensi touch thermostat unavailable at random intervals (i.imgur.com)

submitted 1 year ago by heatermcteets to c/homeassistant

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I have a Sensi thouch thermostat that seems to keep resetting at random intervals. Here is a small snapshot of the log.

Has anyone else had this issue with this device or have any troubleshooting recommendations?

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[–] [email protected] 2 points 1 year ago (1 children)

Is it new? Has it always done this? Have you used any additional wiring harness included? Am not an expert but want to try to help. I experienced this years ago after installing an Ecobee without the additional wiring harness which provides power for the ecobee to run correctly. Each time the furnace would change states the ecobee would reboot. Never happened when using the AC. Something about a "c wire" missing from older houses and needing the additional wiring kit.

[–] heatermcteets 1 points 1 year ago

It has done this since it was installed. I used what was in the box to mount and wire it. It requires a C wire which is available from the furnace. I traced the C wire back to the furnace control board and it’s connected to the C terminal block, but I am definitely not an expert on furnaces.