Honeywell T8775C1005 - Digital Round 24V Support and Manuals
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Most Recent Honeywell T8775C1005 Questions
Screen Is Blank. What Do I Do?
(Posted by hrbrown80 1 year ago)
2 Honeywell Thermostats Blanked Out
Last night both my thermostats went out. The screen went out; does show anything as if it's off. I c...
Last night both my thermostats went out. The screen went out; does show anything as if it's off. I c...
(Posted by kevintjohnson79 2 years ago)
Thermostat Unable To Regulate Accurately. Why?
When ac is running, ambient temp reading increases, which then does not allow the ac to turn off aft...
When ac is running, ambient temp reading increases, which then does not allow the ac to turn off aft...
(Posted by Ccederquist09 3 years ago)
When On Cool The Screen Turns Dark
When I put the thermostat on "cool" the screen turns dark. On "heat" it lights up..
When I put the thermostat on "cool" the screen turns dark. On "heat" it lights up..
(Posted by ladycop7y7 5 years ago)
Thermostat Is Blank And Furnace Won't Turn On
thermostat is blank and furnace won't turn on
thermostat is blank and furnace won't turn on
(Posted by Ncsroxie65 7 years ago)
Popular Honeywell T8775C1005 Manual Pages
Owner's Manual - Page 1
Registered Trademark Patents Pending © 2004 Honeywell International Inc. All Rights Reserved
69-1679EF-1 T8775A,C The Digital Round™ Non-Programmable Thermostats
OWNER'S GUIDE
® U.S.
Owner's Manual - Page 2
(T8775C ONLY) SELECTS COOL/OFF/HEAT
(T8775C ONLY) SELECTS ON/AUTO
ROOM
SHOWS THAT THE
SET
CURRENT ROOM
TEMPERATURE
IS DISPLAYED.
T8775 Thermostat (features and operation).
69-1679EF-1
2 DISPLAYS ROOM OR SET TEMPERATURE
SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. DISPLAYS AND ADJUSTS
TEMPERATURE SETTING/TURNS
BACKLIGHT ON
M19470
Fig. 1.
Owner's Manual - Page 3
... most homes. Operating Your Thermostat
NOTE: Batteries are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1).
The fan only runs with
❑ On:
the heating and cooling system.
The fan runs continuously. Setting SYSTEM and FAN Switches (T8775C only)
❑ System and Fan settings are not required because...
Owner's Manual - Page 4
... within five seconds, the mode will switch to the room temperature display.
❑ A indicator points to Room when the room temperature is displayed. Display Temperature Setting
NOTE: Your temperature setting can be set anywhere from
40°F to 90°F (4°C to 32°C) in heating and 45°F to 99°F
(7°C to 37°C) in...
Owner's Manual - Page 5
... (T8775C only).
5
69-1679EF-1 Heating or cooling does not come on.
❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C).
See equipment manufacturer instructions. Allow compressor to remain off for five minutes before restarting. Adjust Temperature Setting
❑ To lower the temperature setting, turn the dial counterclockwise.
❑...
Owner's Manual - Page 6
... or circuit breaker and replace or reset if necessary.
❑ Check for five minutes, or if a power interruption occurs while the compressor is present in the display.
❑ In cooling, make sure the temperature setting is below the room temperature and a solid snowflake is running, the thermostat will flash during this thermostat, call for cooling is...
Owner's Manual - Page 8
Rev. 6-04 Printed in Mexico
www.honeywell.com/yourhome
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
69-1679EF-1 J.S.
Installation Instructions - Page 1
...16 IN. Fig. 1. T8775A,C
The Digital Round™ Non-Programmable Thermostats
The T8775A,C Thermostats provide single-stage temperature control for 24V systems. The T8775A,C models include a thermostat, wallplate (for instructions regarding recycling and the proper disposal of an old control containing mercury in a sealed tube. INSTALLATION
When Installing this control is complete, check...
Installation Instructions - Page 2
...
CHANGEOVER
VALVE
1 POWER SUPPLY. M19516
Fig. 6. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
Wiring
IMPORTANT Use 18-gauge wire to prevent electrical shock or equipment damage.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 FACTORY INSTALLED JUMPER.
Typical hookup of T8775C in heat-only system with two transformers.
1 POWER SUPPLY. Typical...
Installation Instructions - Page 3
...Fuel switch.
Fahrenheit/Celsius Display
Fahrenheit (factory setting) Off
Celsius
On
DIP Switch 3
Mounting Thermostat to set the heat cycle rate.
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
CUSTOMIZE THERMOSTAT
Setting Fuel Switch (T8775C only)
The fuel switch is preset at the top of the thermostat.
M19497
DIP Switch
To adjust the heat cycle rate or the...
Installation Instructions - Page 4
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
(T8775C ONLY) SELECTS COOL/OFF/HEAT
(T8775C ONLY) SELECTS ON/AUTO
ROOM
SHOWS THAT THE
SET
CURRENT ROOM
TEMPERATURE IS
DISPLAYED. DISPLAYS AND ADJUSTS TEMPERATURE SETPOINT/TURNS BACKLIGHT ON
M19520
Fig. 10. T8775 Thermostat (features and operation). The flame will appear in the display and the heat should turn off. ...
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