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Dec 17, 2016 | Heating & Cooling
Jul 17, 2013 | Honeywell TH3110D1008 Pro3000 Thermostat
WARNING: When the thermostat is reset, all parameters (clock, configuration
and schedules) return to their default settings.
?? Open the thermostat's door.
?? Press and hold the Pgm button.
?? Insert a pointed object (e.g., paperclip) in the reset opening.
Remove it when the thermostat's screen becomes blank.
?? Wait one second and release the Pgm button.
http://customer.honeywell.com/techlit/pdf/69-0000s/69-1855.pdf for complet instructions
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