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Most Recent Honeywell CT3355A1003 Questions
Low Battery Keeps Occurring Even With New Battery
low battery keeps occurring even with new battery. Once low battery appears, heating system stops wo...
low battery keeps occurring even with new battery. Once low battery appears, heating system stops wo...
(Posted by xiaoyangzhang09 4 years ago)
My Mom's Thermostat Has Started Displying In Celcius Rather Than Fahrenheit. Fix
(Posted by Wtschenck 9 years ago)
How To Program Thermastat
I HAVE JUST MOVED IN TO A MOBILE HOME. I HAVE TRIED TO PROGRAM THE THERMA STAT BUT I AM NOT HAVING A...
I HAVE JUST MOVED IN TO A MOBILE HOME. I HAVE TRIED TO PROGRAM THE THERMA STAT BUT I AM NOT HAVING A...
(Posted by lisaneighbor 12 years ago)
Popular Honeywell CT3355A1003 Manual Pages
Owner's Manual - Page 1
MagicStat®/3355
Programmable Thermostat by Honeywell
OWNER'S GUIDE
Weekday/Weekend (5-day/ 2-day) Programmable Heat and/or Cool Low Voltage (20 to 30 Vac) Thermostat and Mounting Plate Model CT3355
1
6699--11001122
Owner's Manual - Page 2
... location of your home, keeping you have questions, call Honeywell Inc. Your new thermostat will automatically control the temperature in your old thermostat.
at 1-800-468-1502, Monday-Friday 7:00 a.m.-5:30 p.m., Central time. RECYCLING THERMOSTAT
If this manual.
Contact your old thermostat in a thermostat.
Fig. 1. MERCURY SWITCH
M3701
2
69-1012 If you comfortable...
Owner's Manual - Page 4
... valves. For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502.
a Compatible with hot water baseboard systems. Will not work efficiently on steam or gravity
systems.
4
69-1012 Compatibility Chart. Not compatible with any 120/240 volt circuit. Isolating relay required for 3-wire thermostats for Installation
s Check Table 1 to the retailer...
Owner's Manual - Page 8
..., and can leak, causing damage to the thermostat or the wall surface. We recommend Energizer® batteries.
s Replace the battery door.
s Make sure the thermostat is flashing, the
8
69-1012 M1719C
REMOVING BATTERY DOOR
As the batteries are oriented correctly. Step 3: Install Batteries
IMPORTANT Batteries must be installed for one or two months before batteries...
Owner's Manual - Page 10
... key. When deciding what time to set for an energy-saving temperature while you can set for your RETURN period, include extra lead time, depending on the outside temperature and your furnace response time,
10
69-1012
Step 4: Program Thermostat
After the batteries are installed, the thermostat can be easily programmed in your hand, before...
Owner's Manual - Page 11
.... If you decide not to program the thermostat, it . Using sharp fingernails or pencil points can set one schedule for weekdays and another for weekends, because your requirements will probably be different for each.
If no program is entered for the weekends, the thermostat will automatically control heating at 68°F (20°C), and...
Owner's Manual - Page 13
... start times should include extra lead time based on outside temperature and furnace response time, to give your furnace a head start to program the thermostat, it automatically controls heating at 68°F (20°C), and cooling at 78°F (26°C), 24 hours a day.
13
69-1012 NOTE: If you decide not...
Owner's Manual - Page 14
.../Day once, then press
until
M1699A
current day
shows; This guide can be used for operation and programming. Follow instructions on
the display.
14
69-1012 Time
Set Current Time/Day Set
Ahead
To set
system switch to set
the day,
Time
Back
press and release
Set Clock/Day
again,
then
press
Ahead
until current time shows...
Owner's Manual - Page 18
... readjust screws A and/or B as a guide. In the unlikely event that you are installing it on another type of system, adjust the on-time accordingly by setting screws A and B on the back of ..., as Required
s The thermostat fan operation switch, labeled FUEL SWITCH (see illustration on page 20) is factory-set for most systems. If
your system is connected. Setting the screw out one turn...
Owner's Manual - Page 19
... in . Cycles would not be long enough for steam/gravity air.
NOTE:
This thermostat does not have a setting for accurate temperature control.
First, turn in both screws completely, then adjust for system type: • Warm Air Furnace-Set at the Hot Water
setting (A-out one turn , B-leave in). • Electric Furnace-Leave at the Warm...
Owner's Manual - Page 24
See illustration (lower right) for wire insertion technique.
s Plug the hole in the wall with insulation to help prevent drafts from adversely affecting the thermostat operation.
5/16 in. (8 mm) STRIP
INSERT STRAIGHT UNDER SCREW HEAD
Rc
JUMPER (FACTORYINSTALLED) REMOVE IF 5-WIRE SYSTEM
R
END OF WIRE VISIBLE HERE
WY G
M1712A
24
...
Owner's Manual - Page 28
... and the fan switch to AUTO.
Warmer
Press key until setting is about 10°F (6°C) below room temperature. Cooler
Press key until the setting is about 10°F (6°C) above room temperature. This damages the thermostat, instead, jumper R and W wires at the primary control such as the gas valve, zone valve, or oil...
Owner's Manual - Page 31
Cool Off Heat
Cool Off Heat
M1707
Cool Off Heat
M1703
31
69-1012
HEAT: The thermostat controls your air conditioning system.
Then set the system switch.
OFF: Both the heating and air conditioning systems are off. COOL: The thermostat controls your heating system.
Owner's Manual - Page 33
... conditioner starts.
s Jumper wires R and W. s If temperature setting is blank or shows bAt Lo, install fresh batteries. s Jumper wires Rc and Y. s The thermostat has a built-in time delay on ).
33
69-1012 s If display is higher than current temperature,
and the display shows HEAT, contact Honeywell Customer Assistance at 1-800-468-1502. s Check for...
Owner's Manual - Page 35
... help prevent drafts from setback or setup, setting and display temperatures may differ for the current setting and display temperature to 30 minutes after fresh batteries are installed.
bAt Lo remains on pages 18 and 19. s Make sure the hole behind the wallplate was plugged with insulation to instructions on display after recovery period. s Remove...
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