What inputs cause auxiliary heat instead of just heat pump

[amdx]

Hi all, I picked this up on another group.
The guy is trying to time his home heating to correspond to
the power companies times of low tier pricing.
He says, "The problem I have is the heat pump not ramping up the
temperature fast enough when it comes back on and the backup straight
electric heat comes on."
What causes the electric heat to come on?
Is it a run time length thing?
Is it in the thermostat or the furnace?

Thank, Mikek

[amdx]

Post by amdx
Hi all, I picked this up on another group.
The guy is trying to time his home heating to correspond to
the power companies times of low tier pricing.
 He says, "The problem I have is the heat pump not ramping up the
temperature fast enough when it comes back on and the backup straight
electric heat comes on."
 What causes the electric heat to come on?
Is it a run time length thing?
Is it in the thermostat or the furnace?
               Thank, Mikek

Does this thermostat have a timer that says, if the heat pump has been
producing heat for X amount of time turn on the aux heat?

Post by amdx
https://www.manualslib.com/products/Trane-Tcont802as32daa-5903933.html

Mikek