Honeywell CT8775C Support Question
Honeywell CT8775C Support Question
Find answers below for this question about Honeywell CT8775C.Need a Honeywell CT8775C manual? We have 1 online manual for this item!
Question posted by ektrewin on July 2nd, 2011
Temperature Not Working Properly
Have round Honeywell CT8775C thermostat. AC temp is set to go on at 77 degrees. At that temp AC turns on but the digital temp indicated on the thermostat rises even though the rooms get cooler. Shouldn't it be going down instead of up? Why is this thermostat no longer being sold?
Current Answers
Related Honeywell CT8775C Manual Pages
Owner's Manual - Page 1
... Step 8. CT8775A,C
THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
CT8775A Heat Only Thermostat (20 to 30 Vac) and CT8775C Heating-Cooling Thermostat (20 to 30 Vac)
Para obtener un documento con las instrucciones en español, por favor visite nuestro sitio de web a: www.honeywell.com/yourhome.
Label Thermostat Wires ...5 Step 5. Mount the Thermostat ...11 Step 10. Prepare...
Owner's Manual - Page 2
... and the proper disposal of the art in home comfort controls.
the state of an old control containing mercury in a sealed tube. Contact your Honeywell thermostat - Turn the dial to adjust the temperature setting. • Large easy-to use.
Enjoy the benefits of The Digital RoundTM Thermostat by Honeywell.
• Simple to -read the display in a dark
room or hallway...
Owner's Manual - Page 3
... PREPARE FOR INSTALLATION
❑ Check Table 1, the compatibility chart, to make sure the thermostat is not compatible, call Honeywell Customer Care, toll-free, 1-800-468-1502. If your system is compatible with any... Equipment
Compatibility with CT8775A
Yes No Yesa Yes Yes No No No
No No
Compatibility with CT8775C
Yes Yes Yesa Yes Yes No Yes No
Yes No
aCompatible with Taco zone valves and ...
Owner's Manual - Page 4
...outdoor temperature is below 50°F (10°C).
❑ Turn off when pulled firmly from the old thermostat. Place the wires where they work , contact your new thermostat ...thermostat that may have a multistage heat pump or other multistage system. Do not
disconnect wires. STEP 3. Wrap the wires separately using electrical tape.
If you have either system does not work properly...
Owner's Manual - Page 5
... turn the fan on by placing your local heating and/or cooling contractor. For details, call your thumb on the top between the wallplate and the thermostat and pulling the thermostat ...❑ To mount directly to keep them from the thermostat by setting the thermostat fan switch to ON, the CT8775C Thermostat will only work with the old terminal designation. WIRES THROUGH WALL OPENING
STEP...
Owner's Manual - Page 6
... the wiring hole on the wallplate and
position it so that the UP indicator in the middle of the wallplate.
screws.
69-1676-1
6 Position the decorator cover plate against the...the wiring holes and reposition the
decorator cover plate (if used) and wallplate over the decorator cover plate. Turn
1 INCH
the wallplate until they are aligned and
SCREW (2)
the two screw holes on the left and...
Owner's Manual - Page 7
... the wiring hole on the wallplate.
❑ Place the wallplate over the decorator cover plate. Turn the wallplate until the wiring holes are aligned and the two screw holes on the left and right...cover plate.
❑ Place the decorator cover plate against the electrical box so that the UP indicator in the middle of the wallplate line up the screw slots on the decorator cover plate.
❑...
Owner's Manual - Page 8
...with insulation to the labels you placed on the wires when you removed the
Y
old thermostat (see illustration).
❑ Match the letter of these terminals.
❑ For wiring ...STEP 7. Wraparound and straight connections are both of your old thermostat wire with the corresponding
W
terminal letter on the CT8775C Thermostat if wires will be connected to Table 2. If
unsure about ...
Owner's Manual - Page 9
... pump only).
If wires will be connected to Rc.
2. cal tape and do not use . 4. Terminal Designations on the new thermostat and connect Rh to R and R to both R and Rc on CT8775C
R
R (see Note 3)
Do not connect. Rc (see Note 2)
W Y G O
B (see Note 2)
Power
Description
- NOTES:
1. Table 2.
Connect O to a single stage heat pump...
Owner's Manual - Page 10
... or the Fahrenheit/Celsius indication, locate DIP switch 1, 2 and 3 on immediately with the heating system where the G terminal is factory set according to E. NOTE: The CT8775A,C Thermostats will provide optimal temperature control if DIP switches 1 and 2 are set in the F position. DIP switch.
10 See Fig. 4. Fuel switch. CUSTOMIZE THE THERMOSTAT
Set Fuel Switch (CT8775C Only)
❑ To...
Owner's Manual - Page 11
...
DIP Switch 3 Off On
STEP 9. Heat Cycle Rate. See Table 4. MOUNT THE THERMOSTAT
ENGAGE TABS AT BOTTOM OF THERMOSTAT AND WALL PLATE. Fahrenheit/Celsius Indication
❑ Use DIP switch 3 to set the desired temperature indication. NOTE: The cooling cycle rate does not require adjustment and therefore cannot be changed.
Table 4. PRESS UPPER EDGE OF CASE TO...
Owner's Manual - Page 12
... Fig. 5)
❑ Fan Auto: Normal setting for improved air circulation.
69-1676-1
(CT8775C ONLY) SELECTS COOL/OFF/HEAT
(CT8775C ONLY) SELECTS ON/AUTO
ROOM SET
SHOWS THAT THE
CURRENT ROOM
TEMPERATURE IS
DISPLAYED
DISPLAYS ROOM OR SET TEMPERATURE
SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED
DISPLAYS AND ADJUSTS TEMPERATURE SETTING/ TURNS BACKLIGHT ON
M19512
Fig. 5. The fan...
Owner's Manual - Page 13
.... ❑ The flame will disappear from the display to indicate the thermostat has called for heating. Room Temperature Display. Turn the dial counterclockwise to display the temperature setting (see Fig. 6).
A
indicator points to the room temperature display (see Fig. 5). ROOM
SET
❑ If a change to the temperature setting is not made within five seconds, the mode will...
Owner's Manual - Page 14
... should turn off for cooling is below the room temperature. Do not operate cooling when outside temperature is made before restarting. The snowflake will flash during this delay.
❑ After five minutes, the thermostat will go into a five-minute delay to lower the temperature setting several degrees below 50°F (10°C). Allow compressor to indicate the thermostat has...
Owner's Manual - Page 15
..., go to 32°C) for the system to the thermostat.
15
69-1676-1
Temperature settings will not change • Make sure the temperature settings are:
(example: cannot set it to On if it is in the Off position.
Heating does not come on.
• Set the system switch to Heat (CT8775C only). • Make sure the temperature setting is above the room temperature...
Owner's Manual - Page 17
... AS REQUIRED.
2 FACTORY INSTALLED JUMPER. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 REMOVE FACTORY INSTALLED JUMPER BETWEEN R AND RC. M19454
Notice:
This thermostat is a Class B digital apparatus that complies with Canadian Radio Interference Regulations, CRC c. 1374.
17
69-1676-1 O
B
Rc 2
G
R
Y
W
COMPRESSOR CONTACTOR
HEATING
1
RELAY OR VALVE COIL
FAN
RELAY...
Owner's Manual - Page 18
...other dated proof of purchase, to the following address:
Honeywell USA
Honeywell Canada:
Dock 4 -
MN10-3860
Honeywell Limited/Honeywell Limitée
1885 Douglas Drive North
35 Dynamic Drive
Golden...THE ONE YEAR DURATION OF THIS WARRANTY.
In Canada, write Retail Products ON30 Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
69-1676-1
...
Owner's Manual - Page 20
Automation and Control Solutions
Honeywell International Inc. Rev. 6-04
www.honeywell.com/yourhome Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario
M1V 4Z9
69-1676-1 J.S.
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