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 mgrover7 on July 9th, 2020
Led Reading
Why would my screen on my thermostat B blank?
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
... held permanently in an effort to provide you to use. Over 100 years of Honeywell engineering expertise went into the making of 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...
Owner's Manual - Page 3
... quality. Settings
Setting FAN and SYSTEM Switches
Fan and system settings are controlled by using FAN and SYSTEM switches located on the bottom of the thermostat case. On:
The fan runs continuously. Use for most homes.
Owner's Manual - Page 8
...and during the day before you might want to consider purchasing the Honeywell Chronotherm® Programmable Thermostat. If you like saving energy, but would like your energy savings temperature settings. You can...home, where you live, the number of energy saving periods you choose and your thermostat to automatically change the temperature setting, you leave for work or school. Energy Savings
...
Owner's Manual - Page 10
Heating or cooling does not come on the thermostat is set to Heat or Cool.
• Check the system fuse or circuit breaker and replace or reset if necessary.
• Check for air movement ...
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
Installation Instructions - Page 1
... the product to follow them could damage the product or cause a hazardous condition.
2.
Read these instructions. Check the ratings given in a sealed tube.
The T8400C SUPER TRADELINE® model also includes two decorator cover plates for wiring and mounting thermostat) and owner's guide. INSTALLATION
When Installing this control is a precision instrument and was...
Installation Instructions - Page 2
...) OR 7/32 (PLASTER OR WOOD)
WHEN USING WALL ANCHORS. Mount decorator cover plate (SUPER TRADELINE® model only), wallplate, T8400C or T8401C, and the screws provided (see Wiring section. Pull the thermostat wire through the entrance hole on the decorator cover plate, then through the heating/ cooling system controls and is adaptable...
Installation Instructions - Page 3
... SYSTEM Switches
Fan and system settings are : On: The fan runs continuously. In cooling, the fan starts and stops with gas heat/electric
cooling. T8400C AND T8401C ELECTRONIC THERMOSTATS
KEEP WIRING IN SHADED AREA
ALTERNATE MOUNTING SCREW HOLE
W
Y G
R C
MOUNTING SCREW HOLE
ALTERNATE MOUNTING SCREW HOLE
WIRING ENTRANCE HOLE
MOUNTING SCREW HOLE
M11023...
Installation Instructions - Page 4
... installer setup mode only, each press of the t key momentarily displays 02. Heat: The thermostat controls the heating system. Each press changes the setpoint one degree; M14682
Setting °F/°C...released, these two-digit codes are off ; T8400C AND T8401C ELECTRONIC THERMOSTATS
Slide the FAN switch in the bottom left corner of the thermostat to Room when the room temperature is displayed...
Installation Instructions - Page 5
... the FAN switch to display cooling algorithm configuration default. Refer to On. Make certain all changes, exit installer setup mode and return to the thermostat. T8400C AND T8401C ELECTRONIC THERMOSTATS
10.
Cooling
CAUTION
Low Temperature Hazard. Fan
1. Slide the SYSTEM switch to Off and the FAN switch to manufacturer's recommendations.
1.
M14688
5. Press the...
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