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Question posted by mjzdybak on October 31st, 2013

Thermostat Not Showing Correct Temperature Now

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Related Honeywell CT8775A Manual Pages

Owner's Manual - Page 1

...13 If You Have A Problem ...15 Wiring Diagrams...16 ® U.S. Remove Old Thermostat ...4 Step 3. Separate Wallplate from Thermostat...5 Step 6. Operating the Thermostat...13 Step 12. 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...

Owner's Manual - Page 2

... answers many of the questions that contains mercury in a sealed tube, do not place your Honeywell thermostat - MERCURY NOTICE If this thermostat is easily seen from a distance. • Backlit display. Turn the dial to adjust the temperature setting. • Large easy-to read display. COOLER WARMER ROOM SET M19582 MERCURY SWITCH TYPICAL LOCATION...

Owner's Manual - Page 3

...240 line volt)b Single Stage Heat Pump Multistage Heat Pumps/Multistage Equipment Compatibility with CT8775A Yes No Yesa Yes Yes No No No No No Compatibility with CT8775C Yes...Yesa Yes Yes No Yes No Yes No aCompatible with Taco zone valves and 2- Package Contents • Thermostat • Wiring labels Tools for Installation • Screwdriver • Needle nose pliers • Decorator ...

Owner's Manual - Page 4

...4 To avoid compressor damage, do not allow them to touch, or you are replacing a thermostat that may have either system does not work with the operation of the special installations apply to ... pulled firmly from the old thermostat. STEP 2. If either one or two wires connected to C or C1 terminals, do not operate the cooling system when outdoor temperature is connected to six or ...

Owner's Manual - Page 5

... wires on a warm air heating only system and could turn the fan on by placing your local heating and/or cooling contractor. As you purchased a CT8775A thermostat, return the product to the wall, see Fig. 1. ❑ To mount onto an electrical box, see Fig. 2. 5 M19492 69-1676-1 STEP 4. WIRES THROUGH WALL OPENING...

Owner's Manual - Page 8

... on your local R heating/air conditioning contractor. IMPORTANT Remove the factory-installed jumper connecting terminals R and Rc on the wires when you removed the Y old thermostat (see pp 16-17. ❑ Loosen the terminal screws. Tighten the terminals. ❑ Plug the hole in the wall with local codes and ordinances. WIRE...

Owner's Manual - Page 9

...and R terminals on the new thermostat and connect Rh to R ...thermostat, remove jumper between R and Rc. 3. Tape off B with electrical tape and do not use . 9 69-1676-1 Table 2. Terminal on Old Thermostat R Rh (see Note 1) 4 V Rc R (see Note 1) W, W1, H Y, Y1, M G, F O B (see Note 3) C (see Note 4) X (see Note 4) B (see Note 3) W2, H2 Y2 Connect to Terminals Connect To Terminals on CT8775A...

Owner's Manual - Page 10

... to set the switch to E. This is connected. NOTE: The CT8775A,C Thermostats will provide optimal temperature control if DIP switches 1 and 2 are set in the F ...position. FUEL SWITCH M19497 Fig. 3. STEP 8. The fuel switch is factory set according to turn on immediately with the heating system where the G terminal is the correct...

Owner's Manual - Page 11

Fahrenheit/Celsius Indication ❑ Use DIP switch 3 to set the desired temperature indication. PRESS UPPER EDGE OF CASE TO LATCH M19498 11 69-1676... 6 Off Off 9 On Off Check with manufacturer for recommended cycle rate. Temperature Indication. Fahrenheit/Celsius Display Fahrenheit (factory setting) Celsius DIP Switch 3 Off On STEP 9. MOUNT THE THERMOSTAT ENGAGE TABS AT BOTTOM OF...

Owner's Manual - Page 12

... 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. Use for most homes. The fan only runs with the heating and cooling system. ❑ Fan On: The fan runs continuously. CT8775 Thermostat (features and operation). 12...

Owner's Manual - Page 13

... on by turning the dial, or pushing the backlight button (see Fig. 5). Display Temperature Setting ❑ Turn the dial one click to the room temperature display (see Fig. 6). M19489 Fig. 6. OPERATING THE THERMOSTAT NOTE: Batteries are not required because the temperature setting is not made within five seconds, the mode will switch to display...

Owner's Manual - Page 14

Can cause permanent damage to On. Do not operate cooling when outside temperature is running, the thermostat will go into a five-minute delay to indicate the thermostat has called for five minutes, or if a power interruption occurs while the compressor is below the room temperature. The cooling system should turn off . The fan should turn...

Owner's Manual - Page 15

...40 to 90°F (4 to respond. If all of this thermostat. If... Temperature settings will not change • Make sure the temperature settings are: (example: cannot set it to On if it...the wallplate. • Make sure the circuit breaker is not tripped, and reset it is wired correctly. Wait five minutes after seeing the flame or snowflake and check the registers again. warm air, ...

Owner's Manual - Page 17

M19454 Notice: This thermostat is a Class B digital apparatus that complies with Canadian Radio Interference Regulations, CRC c. 1374. 17 69-1676-1 M19453 3 USE A JUMPER WIRE (NOT SUPPLIED) TO CONNECT W TO Y. 4 ...