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Popular Honeywell T8400B1026 Manual Pages
Owner's Manual - Page 1
Electronic Thermostat
OWNER'S GUIDE
Set
Room
FAN Auto On
SYSTEM Off Heat
1 M14750
6699--11449922
Owner's Manual - Page 2
Congratulations on the purchase of this thermostat in memory.
69-1492
2 Over 100 years of Honeywell engineering expertise went into the making of your temperature setting.
• Large digital display. You can easily read the current room temperature at a glance.
• No need for you with a more comfortable and convenient living ...
Owner's Manual - Page 3
... all models):
Auto: Normal setting for improved air
circulation and air quality. On:
The fan runs continuously. Settings
Setting FAN and SYSTEM Switches
Fan and system settings are controlled by using FAN and SYSTEM switches located on . In heating, the
fan may start a few minutes after the heating
equipment comes on the bottom of the thermostat case...
Owner's Manual - Page 4
SYSTEM Off Heat
SYSTEM SWITCH
M10975
69-1492
4 Heat: Normal setting for months when your home
needs heating. Digital display shows a flame
when heating is off. Then set the SYSTEM switch:
Off:
Heating is on.
Owner's Manual - Page 5
... the digital display. The w indicator points to Set when the temperature setting is displayed and to 37°C). The temperature setting and the room temperature are shown separately on the digital display, press either the v or w key once.
Displaying Temperature Setting
NOTE: Your temperature setting can be set anywhere from 40° to 99°F (5°...
Owner's Manual - Page 6
Changing Temperature Setting
1. To lower the temperature setting, press the w key.
Set
Room M10982
When in the heating mode, lowering the temperature at night or during the day can lower your energy costs.
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6
To raise the temperature setting, press the v key. Set
Room
M10276
2.
Owner's Manual - Page 7
Troubleshooting Guide
Heating does not come on. • Check that the SYSTEM switch on the thermostat is too warm or cool. • Adjust the temperature by pressing either the v or w key.
7
69-1492
Temperature setting is
set to Heat. • Check the system fuse or circuit breaker and replace or
reset if necessary. • Check for air...
Owner's Manual - Page 8
...Valley, MN 55422
Copyright © 2000 Honeywell All Rights Reserved ® U.S. Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M2H 3N7
Printed in U.S.A.
Registered Trademark 69-1492 G.H. 9-00
Home and Building Control Honeywell Limited - www.honeywell.com/yourhome/ If you have questions concerning this thermostat, call Honeywell Customer Assistance at least 10% post-consumer...
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