Honeywell RTH8500D 3. Press and hold the center blank key for approximately five seconds, until the screen changes., 4. Release the center key when the display on your thermostat matches the display below.

27 69-1725-1
Step 11. Configure Installer Setup (Cont)
3. Press and hold the center blank key for approximately five
seconds, until the screen changes.
4. Release the center key when the display on your thermostat
matches the display below.
D
O
N
E
CANCEL
TUE
PM
SYSTEM
EM HEAT
O
F
F
COOL
CHANGE FILTER UV LAMP HUMIDIFIER PAD
Following
Schedule
Inside Set To
M19969
D
O
N
E
MON
WED
THU
FRI
SA
T
A
A
T
SUN
M22214