I guess my main purpose for this post is to try and determine at what ambient temperature the auxiliary heating comes into play?
I guess the best way to determine this is to experiment with the heating elements activated.
On the Trane heat pump, at one of my homes this is how it worked:
Thermostat set at 70 degrees, turn setting up to 72 and if the thermostat was not satisfied in a unit determined time, one heat strip would cut on. If thermostat was still not satisfied in a determined time, second strip would turn on.
At thermostat there were three lights--one light--one strip, two lights-- two strips.
Now I could turn the thermostat to highest setting and three lights would flash and a separate light would flash indicating Emergency heat.
My present unit thermostat doesn't have these lights, so I will have to use my amp meter.
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