Aprilaire 8620 Owner's Manual download pdf (Page 4)

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OPERATION

Press [MODE] to select:

EM HEAT: (only for heat pumps with auxiliary heat)

Thermostat controls auxiliary heat. Heat pump will not operate

in EM HEAT mode.

HEAT: Thermostat controls only the heating system.

OFF: Heating and cooling systems are off.

COOL: Thermostat controls only the cooling system.

AUTO:

selects heating or cooling depending on the indoor

temperature.

Press [DONE] to save and exit, Or [CANCEL] to exit without

saving. The thermostat will save and exit if nothing is pressed

within 10 seconds.

Press or 



more information.)

SELECT SYSTEM MODE

(EM HEAT/HEAT/OFF/COOL /AUTO)

CHANGE TEMPERATURE SET POINT

Press [MENU] to enter the main menu.

Press [CLEAN SCREEN]

for 30 seconds for cleaning.

Note: Use a soft damp cloth to clean the screen. Use



directly on the screen.

CLEAN SCREENSELECT FAN SETTING (ON/AUTO/CIRC)

Press [FAN] to select:

ON: Fan runs continuously. Use this mode for maximum

air circulation/filtering.

AUTO: Fan runs only when the heating or cooling

system is on.

CIRC:



of energy savings and air circulation/cleaning.

Press [DONE] to save and exit, Or [CANCEL] to exit

without saving. The thermostat will save and exit if

nothing is pressed within 10 seconds.

OPERATION

When the fan mode is changed during a program event

it remains in that mode until the next event starts. The



run continuously through all events.

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Aprilaire 8620 Owner's Manual Page 4

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