Aprilaire 8554 User Manual download pdf (Page 6)

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Step 3: Press the CLOCK button again and “12:” (hours)

and “AM” or “PM” will flash. Use the DECREASE or

INCREASE button to change the flashing symbol

to the current hour making sure the hour has the proper

AM or PM designation.

Step 4: Press the CLOCK button and “:00” (minutes) will

flash. Use the DECREASE or INCREASE button

to change the flashing symbol to the current minute.

Step 5: Press the CLOCK button again. The clock is now

set and the current time appears on the display.

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Aprilaire 8554 User Manual Page 6