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Honeywell WiFi Thermostat RTH8580WF Manual


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Setting functions and options

You can change options for a number of system functions. Available functions depend on the type of system you have. The functions, designated with four-digit numbers, along with available options are described on pages 52–58.

This thermostat is pre-set for a single-stage heating/cooling system. Setting function 0170 for a heat pump will adjust the default settings.

Chanigng the options in this screen

  1.  Press SYSTEM. You’ll see several blank buttons on the bottom of the display.
  2.  Press and hold the center blank button until the screen changes (approximately 5 seconds).
  3.  Cycle through the functions, press st next to the four digit number on the left.
  4.  As needed, change options for any function by pressing st next to the number on the right.
  5.  When you have made all changes, press DONE to save and exit.


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