Honeywell RTH7400 - Entering System Setup; Access System Setup Mode

Installation Guide
69-2104ES—01 16
Entering system setup
Press and release the left button.
System Schedule Clock & More
20
0120
M28068
System Fan Done
20
0120
M28069
Press and hold the center button until the
screen changes (approximately 5 seconds).
Step 1
Step 2