The safety temperature is not the setpoint for room comfort.There are
several setpoints that your thermostat could be using depending if you
are in comfort, Eco, or sleep mode.Check to make sure you are in the
right mode. If your thermostat says it's...
Youre welcome, Good call on the snap disks, much cheaper. Im going to go
with one that closes at a higher temp maybe 55 and off at 65. and leave
the nest safety as the safety of last resort.Cheers
Perhaps wiring one of these in parallel with your furnaces R to W would
do.Set it for whatever temperature you wish to override the nest as a
redundant
thermostat.https://www.grainger.com/product/JOHNSON-CONTROLS-Remote-Bulb-thermostat-1H-38Y062
Edit...
It's a solution for now.As a matter of fact, so far it's the only
solution posted. If you want to be notified beyond the current safety
settings what else can you do?
Third party integration seems to be a
solution.https://www.howtogeek.com/252673/how-to-receive-notifications-from-your-nest-if-your-furnace-or-ac-breaks/