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Give me a moment to pull the manual on thermostat
That will be done in setup menu under function 0350. Do you know how to enter the setup menu?
Pages 7 and 8 in the installation manual.
2.Press and hold 3rd and 5th button on bottom of thermostat
3.Function 0120 will be displayed first
4. Use the down arrow to scroll to function 0350
5. Use the up or down arrow to sect temp you want to prevent heat pump from running
6.Press Done in left corner of thermostat
Look at the links I sent.This is very simple. The links shoe pictures of the buttons and exactly how to do this.
Click on this link