Maintenance Reminders; Screen Lockout; Battery Installation - Aprilaire 8620 Owner's Manual

OpERATION

MAINTENANCE REMINDERS

Maintenance reminders are set up by the installer to
indicate when the equipment is due for service. If a
maintenance reminder is displayed, call your HVAC
dealer for service. They can be cleared by pressing
[MENU] to enter the main menu . press and
select yEs to service reminders and then press [Next] .
press and to select yEs for each reminder
you would like to reset . press [Next] to go to the next
reminder or [Back] to go to a previous reminder . press
[DONE] to reset the selected service reminders .
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SCREEN lOCKOUT

The user can disable certain features of the thermostat.
(see User system setting Table on pages 32-33 for
details.) This feature can be overridden by pressing and
holding [MENU] for 7 seconds .
OpERATION

BATTERy INSTAllATION

The thermostat can be battery powered, AC powered
or both. when wired for AC power, the batteries are
optional and only provide back-up power to the clock.
The thermostat has a memory backup that saves the
thermostat's settings in case of a power interruption . The
system settings will be retained but the clock will reset
after 90 seconds with no battery or AC power.
The reset button located under the battery cover can be
used to reset the thermostat to factory defaults .
The reset button should only be used by the installer.
WARNING
RESET
BUTTON
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