Aprilaire 8556 owner manual Using The Available LED Indicators, Case Of Power Failure

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110-791B 7/12/01 8:58 AM Page 29

Using The Available LED Indicators

This model is equipped with 2 LED indicator lights. These LEDs are located along the top edge of

the thermostat panel (not on the display) and look like small, clear edges protruding out of the top of the thermostat. When the left and/or right LED is supplied with a 24 VAC signal, the LEDs glow red and can be used to indicate many other system functions such as when the humidifier or fresh air exchanger is running. Contact your installing contractor to understand what the left and/or right LEDs signal.

Use of left and right LEDs will require equipment and additional wiring at the thermostat which should only be done by a qualified heating and cooling contractor.

In Case Of Power Failure

The Model 8556 thermostat does not require a battery. If the power goes out the letters “AC” appear on the display indicating power is not being supplied to the thermostat. “AC” will remain on the display for up to approximately 1 hour after the power goes out. During the period that the power is off, the heating/cooling system will not operate.

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Contents Model Equipment Control Temperature ControlCooling Energy Star Program Information Cool = 78˚ Heat = 70˚Heat = 62˚ Cool = 85˚Change the flashing symbol to the current day Week Setting Or Changing The Clock110-791B 7/12/01 857 AM Progressive Recovery Setting Or Changing The Program110-791B 7/12/01 857 AM Heat = Cool = Program ScheduleSetting Or Changing Program Times Night Press and release the program button. The DaySetting Or Changing Heating Temperatures Setting Or Changing Cooling Temperatures Press and release the Mode button until the word To Start Running The Program Reviewing Programmed Time Schedules Temperature SettingsThermostat Operation For Best Performance110-791B 7/12/01 858 AM Return to the program Temperature ControlTime Control Equipment Control 110-791B 7/12/01 858 AM Optional Settings For Additional Thermostat Features 110-791B 7/12/01 858 AM 110-791B 7/12/01 858 AM Following procedure must beFigure 1 carefully followed See Figure Place ThermostatTurn the thermostat power back on Case Of Power Failure Using The Available LED IndicatorsCleaning Limited Warranty BOX 1467 MADISON, WI
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