I have a Carrier 38MURAQ30AB3 high heat pump, the specs say it works to
-22°F (just installed last week).The Nest auxiliary low temperature is
set to 0°F, any suggestions to operate at lower temperatures?
I see that the auxiliary heat lock out setting has changed! Software
6.2-27 The low temperature is now +10°F with the added choice of "Never
use ault.". That's better than turning off the breakers. I just watched
a YouTube video about the new cold cl...
I live in south western Pennsylvania,USA close to Pittsburgh. I’ve had
my nest learning thermostat 3rd generation for about 4 years now and
decided to keep it with my new heat pump system. At times it does go
below zero degrees Fahrenheit in my area ...
This is a screenshot of my wiring. The installer set the dip switches
for the heat pump and air handler to control the stages of operation,
but they also set the auxiliary heat low temperature on the Nest.
