By agoldenbee
I first tried a Honeywell z-wave tstat and returned it after I couldn’t get the heat to work properly because the tstat would cycle/reboot after I tested the heat part. Couldn’t find anything wrong with settings so returned it thinking it defective.
I then had a Trane I bought work fine (from everything I remember) but I had intermittent issues with the z-wave functionality so…yeah…had to return it.
A friend had a first generation Nest he wasn’t using so I thought forget z-wave and let me go WiFi as there are better tstats out there and let me see what happens.
It worked fine, cold and heat.
So I chalked up that Honeywell large touchscreen to a bad unit.
I decided WiFi is my path and ordered an Ecobee Smart Si. LOVE the unit, all the settings the Nest didn’t have, etc.
Only…it cycled/rebooted when I tested heat!
So the Trane (from what I remember) and Nest didn’t reboot, the other two did.
I’ll call Ecobee tomorrow but I can’t see what the heat would be doing to cause this other than maybe when it kicks in, it pulls just too much power that the C wire isn’t delivering enough for some units so 2 of the 4 cycled when it kicked in?
Or maybe 2 of them had the internal battery keep it alive just long enough to get past the initial start because I know Nest can be off power for a while…?
If no one can guess what to check, I can only tell by buying a 24v transformer and trying it out. On the plus side, I have an outlet inside the HVAC closet and the tstat is a foot outside of it on the wall.
Can anyone recommend a 24v transformer to use for a dedicated C-wire off Amazon?
MANY THANKS IN ADVANCE!
Source: DoItYourself.com