Operating Your Thermostat | Honeywell TH8000 Series specification

Operating Your Thermostat

Setting Fan and System Keys

SETTING FAN KEY

The Fan key selections vary based on your heating and/or cooling system type.

On—fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning.

Auto—fan follows fan program schedule. See Fan Schedule section for more information.

Circ— fan runs randomly approximately 35% of time. Use this setting for improved air circulation or for more efficient central air cleaning when you do not want the fan running continuously.

SETTING SYSTEM KEY

The System key selections vary based on your heating and/or cooling system type. Heat — thermostat controls your heating system.

Off —both heating and cooling systems are off. Cool — thermostat controls your cooling system.

Auto — thermostat controls both your heating and cooling system based on temperature.

Em. Heat (heat pump systems only) —thermostat controls emergency heat and auxiliary heat, if needed. Heat pump is not operational.

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Honeywell TH8000 Series manual Operating Your Thermostat, Setting Fan and System Keys, Setting FAN KEY, Setting System KEY

Contents

TH8000 Series Programmable Thermostats Contents Features Home Screen Key Description Down Arrow Home Screen Display Description Time Programming Your Heating and Cooling Schedule Editing Schedule M19955 Saving Changes Cancelling a Schedule Period OK to Pick Multiple Days FAN Setting Time Setting Fan and System Keys Setting FAN KEYSetting System KEY Operating Your Thermostat Setting Temperature Overrides Hold Temperature Until Temporary Hold Permanent Hold Vacation Hold Inside Fan Schedule Fan Status Displayed on Home Screen Manual Override of Fan Schedule Replacing Your Batteries Remove thermostat from the base by pulling straight out Batteries Cleaning Your Thermostat Screen Reading Your Outdoor Temperature Select Models View Outside Temperature Select Models Reading Your Remote Indoor Temperature Select Models ONE Remote Indoor Sensor Installed Select ModelsMultiple Remote Indoor Sensors Installed Select Models Reminder Timers Select Models Resetting Expired Timers View or Reset Timer Settings Before They Expire Screen Locked Partially Locked Screen Fully Locked Screen Reading Your Inside Humidity Level Select Models Inside Temperature Recovery Dehumidification Control Select Models Recovery Advanced Heat Pump Features Select Models Setting CalendarSetting Calendar After Thermostat is Already Functioning Setting Calendar When Thermostat is First Powered SET Current DAY SET Month Advanced Settings Press to Exit Change User Setup Current Setting User Setup Number 0140 Current Calendar Month User Setup Number 0150 Current Calendar Date User Setup Number 0160 Schedule OptionsUser Setup Number 0320 Display Temperature Shown in F or C User Setup Number 0330 Daylight Savings On or Off User Setup Number 0500 Furnace Air Filter Timer User Setup Number 0510 Humidifier Pad Timer User Setup Number 0520 UV Lamp Timer User Setup Number 0640 Time Format User Setup Number 0670 Screen Lockout Function Exit User Setup Frequently Asked Questions and Answers Limited Five-Year Warranty Customer Assistance