Honeywell T8400C Support Question
Honeywell T8400C Support Question
Find answers below for this question about Honeywell T8400C.Need a Honeywell T8400C manual? We have 2 online manuals for this item!
Question posted by gaijgm on January 3rd, 2014
How To Change Battery On Honeywell Thermostat T8400c 1099
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Current Answers
Related Honeywell T8400C Manual Pages
Owner's Manual - Page 1
M18539
1
69-1490
69-1490 Set
Room
FAN Auto On
SYSTEM Cool Off Heat
M18535
Em Ht Aux Ht
Set
Room
Electronic Thermostat
OWNER'S GUIDE
FAN Auto On
SYSTEM Cool Off Heat Em.Ht.
Owner's Manual - Page 2
.... Over 100 years of Honeywell engineering expertise went into the making of your temperature settings are not required because your new thermostat! You can easily read the current room temperature at a glance.
• No need for you with a more comfortable and convenient living environment.
• Simple and easy to change your temperature setting...
Owner's Manual - Page 3
In heating, the fan may start a few minutes after
the heating equipment comes on the bottom of the thermostat case. First set the FAN switch:
Auto: Normal setting for improved air
circulation and air quality.
On:
The fan runs continuously.
FAN Auto On
FAN ...
Owner's Manual - Page 7
To raise the temperature setting, press the ▲ key. Changing Temperature Setting
1. When in the cooling mode, raising the temperature before you leave for work or school also lowers your energy costs. Set
Room
M18443
7
...
Owner's Manual - Page 8
Energy Savings
You can save energy with this thermostat, temperature settings can also save energy.
69-1490
8 Savings ... the temperature setting 5°F (3°C) to consider purchasing the Honeywell Chronotherm® Programmable Thermostat.
If you like saving energy, but would like your thermostat to automatically change the temperature setting, you choose and your home, where you ...
Owner's Manual - Page 9
... 18% 19 TO 22% 23 TO 33%
COOL
* YOUR SAVINGS DEPENDS ON HOME SIZE AND ACTUAL HEAT LOSS OR GAIN, GEOGRAPHIC LOCATION, FREQUENCY OF TEMPERATURES CHANGE, AND RANGE IN DEGREES OF...
Owner's Manual - Page 10
Temperature setting is too warm or cool.
• Check that the SYSTEM switch on .
Heating or cooling does not come on the thermostat is below 50°F (10°C). Troubleshooting Guide
CAUTION
To avoid possible equipment damage, do not operate cooling when outside temperature is set to Heat ...
Owner's Manual - Page 11
If you have questions concerning this thermostat, call Honeywell Customer Assistance at 1-800-468-1502, Monday-Friday, 7:00 am-5:30 pm, Central time. For service, contact your local heating and cooling contractor:
11
69-1490
Owner's Manual - Page 12
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario M1V 4Z9
Copyright © 2000 Honeywell
All Rights Reserved
® U.S. Registered Trademark
69-1490 J.H. 9-00
6ww9w-1.h4o9ne0ywell.com/yourhome
12
Installation Instructions - Page 1
... or °C. Registered Trademark Copyright © 2002 Honeywell •
• All Rights Reserved
69- 1480- 1
The T8400C SUPER TRADELINE® model also includes two decorator cover plates for wiring and mounting thermostat) and owner's guide.
The T8400C Thermostat is selectable at average temperature. The T8401C Thermostat is complete, check out product operation as...
Installation Instructions - Page 2
... wallplate to the wall using the anchors and screws provided.
5. Mounting Decorator Cover Plate and Wallplate to Wall
IMPORTANT Level only for wiring the T8400C and T8401C Thermostats. see Fig. 2) as follows:
1. Typical location of straight or wraparound wiring connections;
See Fig. 3.
1 3-7/8 IN. Mount decorator cover plate (SUPER TRADELINE® model only...
Installation Instructions - Page 3
... AND OVERLOAD PROTECTION AS REQUIRED.
2 IN T8401C INSTALLATIONS, CONNECT C TERMINAL.
Oil primary has its own transformer. Engage the tabs at the bottom of the thermostat and wallplate.
2. T8400C/T8401C heat-cool wiring diagram in oil heating/electric cooling system. FAN Switch
Fan switch settings are controlled manually by the heating equipment and...
Installation Instructions - Page 4
... the temperature setpoint on the digital display. T8400C AND T8401C ELECTRONIC THERMOSTATS
Slide the FAN switch in the bottom left corner of the thermostat to the desired mode. No action takes place...the Off position.
When the keys are off , t turns it off . Each press changes the setpoint one degree; Set Temperature Setpoint
NOTE: Temperature setpoint range is off .
The...
Installation Instructions - Page 5
... temperature setting several degrees below the room temperature. NOTE: To bypass the 5 minute delay, see the Optional System Checkout section. Fan
1.
T8400C AND T8401C ELECTRONIC THERMOSTATS
10.
To change the setpoint to scroll between 1, 3, 4, 5, 6, or 9.
Heating Cycle Rates. C3 = Aggressive cooling algorithm (can cause overshooting).
9. After approximately ten seconds, the...
Installation Instructions - Page 6
Rev. 2-02
www.honeywell.com/yourhome Automation and Control Solutions
Honeywell
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
69-1480-1 G.H.
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