Honeywell T8775C1005 Support Question
Honeywell T8775C1005 Support Question
Find answers below for this question about Honeywell T8775C1005 - Digital Round 24V.Need a Honeywell T8775C1005 manual? We have 2 online manuals for this item!
Question posted by Ncsroxie65 on February 3rd, 2017
Thermostat Is Blank And Furnace Won't Turn On
thermostat is blank and furnace won't turn on
Current Answers
Answer #1: Posted by Odin on February 3rd, 2017 6:09 PM
Odin
Member since:
April 10th, 2010 Points: 41,236,690
Member since:
April 10th, 2010 Points: 41,236,690
See the Troubleshooting Guide starting at https://www.manualslib.com/manual/256946/Honeywell-C.html?page=5&term=troubleshooting. Consider those suggestions that may apply. Good luck!
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
Related Honeywell T8775C1005 Manual Pages
Owner's Manual - Page 1
T8775A,C The Digital Round™ Non-Programmable Thermostats
OWNER'S GUIDE
® U.S. All Rights Reserved
69-1679EF-1 Registered Trademark Patents Pending © 2004 Honeywell International Inc.
Owner's Manual - Page 2
T8775 Thermostat (features and operation).
69-1679EF-1
2 DISPLAYS ROOM OR SET TEMPERATURE
SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. (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 SETTING/TURNS
BACKLIGHT ON
M19470
Fig. 1.
Owner's Manual - Page 3
... your heating system. ❑ Off: Both heating and cooling systems are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1). SET THE FAN SWITCH:
❑ Auto: Normal setting for improved air
circulation. IMPORTANT Do not operate the T8775C in cooling mode when the ...
Owner's Manual - Page 4
.... 1. ROOM SET
M19489
ROOM SET
M19490
69-1679EF-1
4 A indicator points to Room when the room temperature is displayed.
Backlit Display
❑ The backlight can be turned on by turning the dial, or by pushing the backlight button as shown in cooling (T8775C only).
❑...
Owner's Manual - Page 5
... setting, turn the dial clockwise. Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only).
5
69-1679EF-1 See equipment manufacturer instructions. Allow compressor to compressor or other equipment. Heating or cooling does not come on.
❑ Make sure that the SYSTEM switch on the thermostat is below...
Owner's Manual - Page 6
... breaker and replace or reset if necessary.
❑ Check for five minutes, or if a power interruption occurs while the compressor is running, the thermostat will flash during this thermostat, call for cooling is present in the display (T8775C only). NOTE:
If a call Honeywell Customer Care at the register. The snowflake will go...
Installation Instructions - Page 1
... Check the ratings given in an area with the screws provided. Contact your application.
3. 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...
Installation Instructions - Page 2
... COIL
R W
1 POWER SUPPLY.
Typical hookup of T8775C in heat-only system with two transformers.
1 POWER SUPPLY.
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
Wiring
IMPORTANT Use 18-gauge wire to wire the T8775A,C Thermostats. All wiring must comply with single transformer. Typical hookup of T8775C in a heat-only system. PROVIDE DISCONNECT MEANS AND...
Installation Instructions - Page 3
...fan to turn on immediately with manufacturer for gas or oil systems. If the T8775C is being installed on the back of the thermostat. M19497...THERMOSTAT
Fahrenheit/Celsius Indication
Use DIP switch 3 to Wallplate
ENGAGE TABS AT BOTTOM OF THERMOSTAT AND WALL PLATE. FUEL SWITCH
Fig. 7. See Fig. 8. Table 2.
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
CUSTOMIZE THERMOSTAT...
Installation Instructions - Page 4
... disappear from the display and the cooling should turn off . The fan should turn off . DISPLAYS AND ADJUSTS TEMPERATURE SETPOINT/TURNS BACKLIGHT ON
M19520
Fig. 10.
Heating
1....T8775C only).
2.
The thermostat controls the cooling
system. Slide the FAN switch to protect the compressor. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
(T8775C ONLY) SELECTS ...
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