How do I program my Aprilaire Model 8465?

Friday, September 2, 2011 by Aprilaire Team
Consumer question: 

How do I select 5/1/1 programming mode on my Aprilaire Model 8465? Documentation only explain how to program for 5/2.

Aprilaires' response:

Thank you for calling us regarding your Aprilaire Model 8465 Thermostat. To change the program mode, you need to access the advanced set-up options. Option 19 will allow you to adjust the program between 5/2 and 5/1/1.
Turn the thermostat mode to Off. Press the Mode and Up arrow buttons simultaneously for about 3 seconds, until the display changes to a large 01. Press the Mode button to advance to the 19 option. When this happens, you should see a smaller number 0 in the upper right-hand corner. Press the Up arrow to change this to 1. Once you've done so, don't press any buttons for about 10 seconds and the screen should revert to the main display. When you set the program, your options should show the separate weekend schedules. Finally, change the mode back to the previous setting.
We appreciate the opportunity to be of assistance.

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