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 Ccederquist09 on July 28th, 2020
Thermostat Unable To Regulate Accurately. Why?
When ac is running, ambient temp reading increases, which then does not allow the ac to turn off after Collings the air. Ac runs until it is shut off manually at this point. Ambient temp. Seams accurate when ac in not running. What is the cause and how to fix it whiteout buying new thermostat
Current Answers
Related 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
DISPLAYS AND ADJUSTS
TEMPERATURE SETTING/TURNS
BACKLIGHT ON
M19470
Fig. 1. (T8775C ONLY) SELECTS COOL/OFF/HEAT
(T8775C ONLY) SELECTS ON/AUTO
ROOM
SHOWS THAT THE
SET
CURRENT ROOM
TEMPERATURE
IS DISPLAYED. DISPLAYS ROOM OR SET TEMPERATURE
SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. T8775 Thermostat (features and operation).
69-1679EF-1
2
Owner's Manual - Page 3
...: Batteries 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. The fan runs continuously.
Setting SYSTEM and FAN Switches (T8775C only)
❑ System and Fan settings are not required because the temperature setting...
Owner's Manual - Page 4
... as shown in cooling (T8775C only).
❑ Turn the dial one click to Set when the temperature setting is displayed. If a change to the temperature setting is not made within five seconds, the mode will switch to the room temperature display.
❑ A indicator points to Room when the room temperature is displayed...
Owner's Manual - Page 5
Adjust Temperature Setting
❑ To lower the temperature setting, turn the dial counterclockwise.
❑ To raise the temperature setting, turn the dial clockwise. 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 50°F (10°C). Can cause...
Owner's Manual - Page 6
... temperature setting is below the room temperature and a solid snowflake is running, the thermostat will go into a five-minute delay to protect the compressor.
The snowflake will flash during this thermostat, call for cooling is made before the compressor has been off for air movement at 1-800-468-1502.
69-1679EF-1
6 NOTE:
If a call...
Installation Instructions - Page 1
...the product to Wall
Mount the T8775A,C wallplate, with good air circulation at average temperature. Check the ratings given in
corners. - HOLES FOR DRYWALL,...,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 wiring and mounting thermostat), mounting...
Installation Instructions - Page 2
...VALVE COIL
R W
1 POWER SUPPLY. Typical hookup of T8775C in a heat-only system. HEATING
1
RELAY OR
VALVE COIL
1 POWER SUPPLY. M19514
Fig. 3. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
Wiring
IMPORTANT Use 18-gauge wire to Fig. 2 through 6 for typical wiring hookups.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 FACTORY INSTALLED JUMPER...
Installation Instructions - Page 3
.... 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.
See Table 2. Table 2.
This is the correct setting for recommended cycle rate. Heating System
Cycles DIP DIP
Per Switch Switch
Hour 1
2
Steam, Gravity
1
On On
High Efficiency Warm Air
3
(90...
Installation Instructions - Page 4
... the heat should turn off . stat will flash during this delay.
1.
Heating
1. Lower the temperature setpoint below the room temperature.
3.
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. The fan runs continuously.
Raise the...
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