Hi All:After more than a year of use our Nest Thermostat E seemingly
lost connection to the furnace. Got an E195 code and mentioned R. We
found that if we turned off the manual emergency swtich to the furnace
waited a minute or then turned it back on...
Hello RomandsonAC:Well, we hooked up the C common wire. The display
showed R power, W1 heat, C 24V common. But alas that didn't work.
Instead we got a new error message: E159: No power to common (c) wire
detected. So alas we gave up. We think maybe t...
Hello RomandsonAC:Thanks for all your work on this. Consensus is that
Nest Thermostat E needs continuous power which connecting the C --
common wire should fix. I think I have this part right, it ran for a
long time with no problem but the battery ev...
We have no air conditioning, just a hot air furnace. We live way up
north. So having a furnace/thermostat that cuts off periodically could
be really bad, especially if we are not around. Just two wires go into
the thermostat, one to R and one to W1. ...