Honeywell RTH8500 Owner's Manual

17
Press SCREEN to lock the screen for
cleaning. The screen will remain locked
for 30 seconds so you can clean the
screen without changing any settings.
After 30 seconds, press DONE to
resume normal operation, or press
SCREEN again if you require more time
for cleaning.
NOTE: Do not spray any liquid directly
on the thermostat. Spray liquids onto a
cloth, then use the damp cloth to clean
the screen. Use water or household
glass cleaner. Avoid abrasive
cleansers.
If activated during installation, the
furnace filter reminder alerts you when
it is time to replace your filter.
Press RESET after changing the filter, to
restart the timer.
To change the reminder interval:
1. Press MORE, then EDIT.
2. Press s or t to select the desired
interval, then press DONE.
3. Press RESET.
4. Press DONE to save and exit.
Screen cleaning
Filter reminder
SCHED HOLD CLOCK SCREEN MORE
WED
PM
Following
Schedule
Inside
Set To
SCREEN LOCKED
70
6:00
70
FAN
AUTO
M28386
OK TO
CLEAN
SCREEN
30
M28387
SCHED HOLD CLOCK SCREEN MORE
WED
PM
RESET
CHANGE FILTER
Inside
Set To
55
6:00
70
FAN
AUTO
SYSTEM
HEAT
M28388
DONE
Filter
Days
60
M28389

Honeywell RTH8500 Specifications

General

Hold Feature	Yes
Compatibility	Works with most heating and cooling systems
Temperature Range	40°F to 90°F
Weight	250 g
Programmable	7-day programmable
Dimensions	4.5 x 3.5 x 0.9 inches (114 x 89 x 23 mm)