Climate Technologies 43355 User manual

Owner’s Manual Model 43355
PROGRAMMABLE
THERMOSTAT
M
AM
4
TEMP

2
Introduction
CONGRATULATIONS!
Your new Climate Technology electronic thermostat
will provide years of reliable service. By saving en-
ergy, your thermostat will pay for itself during its
first season of use. Thank you for buying a Climate
Technology product!
Please read this manual for complete instructions on
installing and operating your thermostat.
If you require further assistance, call Climate Tech-
nology Technical Support at 800-676-7861 from 8
a.m. to 5 p.m. Central Time.
Model Information:
Model Number ___________________________________________
Serial Number____________________________________________
Date Purchased __________________________________________
Where Purchased _________________________________________
43355

3
Table of Contents
Read This Before Installing Thermostat 5
Features 7
What You Need 8
Remove Old Thermostat 8
Wire Labeling 9
Mount Wallplate and Thermostat 11
Connect Wires and Mount Thermostat Cover to Wall Plate 12
Selector Switches 13
Setting Time and Day 14
Default Programs 16
Personal Program Schedule 17
Manual Programming 18
Weekday / Weekend Programming 19
7-Day Programming 21
Reviewing Programs 22
Reviewing the Current Temperature Setting 23
System Selector Switch 24
Fan Switch 24
Temporary Manual Override 25
INTRODUCTION
INSTALLATION
PROGRAMMING
OPERATIONS
(continued)

4
Permanent Manual Override 26
Vacation Override (Programmable Hold) 27
Home Today 28
Energy Monitor 30
Filter Monitor 31
Auto Recovery 32
SPAN Setting Mode 34
Backlighting 35
Low Battery Warning 36
Error Mode 37
Auto Cut-Off 37
Mechanical Heat Back-Up 37
Problems & Solutions 38
Technical Support 39
Heat / Cool Systems 40
Single-Stage Heat Pump Systems 41
Heat Only / Cool Only Systems 41-42
Table of Contents (continued)
OPERATIONS (continued)
SAFETY FEATURES
TROUBLESHOOTING
WIRING DIAGRAMS

5
Read This Before Installing Thermostat
IMPORTANT
1Read the entire installation section of this Owner’s Manual thoroughly before you begin
to install or operate your Climate Technology Ther-
mostat.
INSTALLATION
2All installation is normally performed at your thermostat.
ARMCHAIR PROGRAMMING
3You can program your thermostat before
installation by inserting the batteries and following
the instructions starting on page 16. This can be done
while you relax in your favorite chair and is a very
good way to familiarize yourself with all the functions
of your Climate Technology Thermostat.
OPERATION
4Your Thermostat is designed to operate with most gas, oil, electric or 2-wire hot water heating
and air conditioning systems. It will also operate
single-stage heat pumps that do not have auxiliary
or emergency heat. These have 24-volt or millivolt
control systems and represent most central heating,
air conditioning, or space heating units in use in the
United States.
This Climate Technology Thermostat will NOT
control multi-stage heat pumps or 110/220
Volt systems.
COMPRESSOR PROTECTION
5The thermostat provides a 3.5 minute delay after shutting off the heating or cooling system before
it can be restarted. This feature will prevent damage
to your compressor caused by rapid cycling. Note
that this delay also applies to the heating system
control. It does not prevent a rapid compressor re-
start due to short power outages.
TEMPERATURE RANGE
6Your thermostat can be programmed between 45°F and 95°F (4°C and 35°C). However, it will
display room temperatures from 32°F to 99°F (0°C
and 37°C). “HI” will be displayed if the temperature
is higher than 99°F (37°C), and “LO” will be dis-
played if the temperature is lower than 32°F (0°C).
This thermostat will automatically cut off in Heat
mode if the temperature rises above 95°F (35°C),
and automatically cut off in cool mode if the tem-
perature drops below 45°F (7°C).

6
Read This Before Installing Thermostat (continued)
POWER FAILURE
7Whenever the main power is interrupted or fails, the battery power retains the programs and cur-
rent time.
AUTO RECOVERY
8Your thermostat is set from the factory to gradually
recover the room temperature from an energy sav-
ing program to your comfort program. Therefore, the
thermostat may turn your system on several minutes
prior to your programmed time. This operation is nor-
mal, but can be turned off. Refer to the Selector
Switches information on page 24.
BATTERY WARNING
9Fresh alkaline batteries should provide over one
year of service. However, when the batteries be-
come drained, the Low Battery indicator will flash on
the display. When this message occurs, install 2 new
AA batteries. You have approximately 1 minute to
change the batteries and keep thermostat’s clock and
program settings. Once the batteries have become too
low to ensure proper operation, your system will be
turned Off, and the display will be cleared except for
the Low Battery indicator flashing on the LCD display.
CAUTION:
Once the Low Battery only display oc-
curs, the thermostat is shut down, and your sys-
tem will no longer operate. In this condition,
there is no temperature control of your dwelling.
NOTE: The INDIGLO®night-light will not function
when the thermostat is in low battery condition.
NOTE: If you plan to be away from the premises
over 30 days, we recommend that you replace
the old batteries with new alkaline batteries
prior to leaving.
ENERGY STAR®Partner
As an ENERGY STAR®Partner, Climate Technology has
determined that this programmable thermostat meets
the ENERGY STAR®guidelines for energy efficiency.

7
Features
energy
home
today
fan
auto
on
system
heat
cool
off
reset
day/time
prog day
program
filter
hold
/return
HEAT TEMP
AM
SA
2
LCD Display: Shows time, day, temperature, program
number, and other feature information as required.
Reset: Press with a paper clip to reset the
thermostat and return to power-up settings.
Program Day Key: Selects the day
or days to review or change in the
Program mode.
Energy: Measures and
displays heating and
cooling system
operating time for
Today, Yesterday, This
Week, Last Week, or
Total. By monitoring
your energy usage, you
can program the
thermostat to optimize
energy savings.
System Switch:
Selector switch for
Heat, Cool, and Off
Fan Switch: Fan
switch for Automatic
or Continuous fan
operation.
Battery Release Lever:
Push to pop batteries loose.
Hold / Return Key: Used for
setting a permanent or vacation
hold, and for returning to the
normal display from Day & Time
setting, Programming, or Span
setting modes.
Day / Time Key: Used for
entering the Clock setting mode.
Use with the Up and Down keys
to set the time and day.
Filter Key: Resets Filter Change
counter to zero.
Program Key: Used for entering
and modifying Programs. Use
with the Up and Down keys to
set times and temperatures.
Press when in Clock setting
mode to select between 12 and
24 hour clock modes.
Up and Down Keys: Keys for changing
the Temperature setting. Also used for
increasing and decreasing selections in
the Time, Program, and Span functions.
Home Today: Overrides
energy-saving program
temperatures while you are
home for the day.

8
INSTALLATION
What You Need
This thermostat includes two #8 screws and two wall
anchors for mounting. To install your thermostat, you
should have the following tools and materials.
■Phillips and Slotted Screwdrivers
■Hammer
■Electric drill and 3/16" bit
■Two 1.5 V (AA) size alkaline batteries (included)
Remove Old Thermostat
CAUTION: Do not remove any wiring from exist-
ing thermostat before reading the instructions
carefully. WIRES MUST BE LABELED PRIOR TO
REMOVAL.
■IMPORTANT! Turn off the power to the furnace at
the main power panel or at the furnace.
■Remove existing thermostat cover. See Figure 1.
Some thermostats will have screws or other lock-
ing devices that must first be removed. Once wall
mounting plate is exposed, look for wires.
If wires are not visible, they may be connected to the
back of the wallplate. Again, look for screws, tabs,
etc. Some models have doors that open to expose
wires and mounting screws. (See Figure 1).
TYPICAL HOME THERMOSTATS
Figure 1
Wall Mounting Plate Thermostat Cover
Wall Mounting Plate Thermostat Cover

9
Wire Labeling
■ Each wire coming from the wall to the existing
thermostat is connected to a terminal point on
that thermostat. Each of these terminal points is
usually marked with a code letter as shown in
Table A on the next page.
■Note that this thermostat has multiple function
terminals that allow Single-Stage Heat Pump ca-
pability. Standard systems use: Rh, Rc, G, W.
[Single-Stage Heat Pumps use: Rh, Y1, G, and O or
B.] Table A below shows the multiple functions of
the terminals. Use the terminals that match your
system.
■The number of wires in your system can be as few
as two (for heat only systems), as many as eight,
or any number in between. If you follow the label-
ing procedures correctly, you do not have to be
concerned about how many wires there are.
■There is often no ter-
minal marking on the
existing thermostat of
two wire, heat only
systems. Just connect
either of the wires to
the RH terminal, then
connect the other wire
to the W terminal to
complete the circuit.
■IMPORTANT! BEFORE DISCONNECTING ANY
WIRES, APPLY THE SELF-ADHESIVE LABELS PRO-
VIDED TO THE WIRE AS SHOWN IN TABLE A ON
THE NEXT PAGE. (For example, attach the label
marked W to the wire that goes to the W or H
terminal on your existing thermostat.) IGNORE
THE COLOR OF THE WIRES since these do not
always comply with the standard.
■After labeling wires, disconnect them from the
existing thermostat terminals.
■Remove existing wallplate. To make sure wires do
not fall back into wall opening, you may want to
tape them to the wall.
■If hole in wall is larger than necessary for wires,
seal this hole with insulating material so that no
hot or cold air can enter the back of the thermo-
stat from the wall. This air could cause a false
thermostat reading.
W
GY
RH
RC
(continued)

10
INSTALLATION
Table A
NOTE:
Do not connect a “Common” wire (sometimes labeled “C”) to any terminal on this thermostat.
Tape up the wire and do not use. This wire provides electricity to non-battery powered thermostats.
RH
G
RC
W/B
Y/O
Y1
RH, R, VR or 4
24 Volt
RC, VC
24 Volt Cool
G or F
Fan
Y, C or M
Air Conditioning Compressor
- or -
O
Reversing Valve operating in Cool mode.
(Single Stage Heat Pumps ONLY.)
If the code letter on your
existing thermostat is
then mark the wire
with label shown
and connect to thermostat
terminal shown
W or H
Heating
- or -
B
Reversing Valve operating in Heat mode.
(Single Stage Heat Pumps ONLY.)
Y1
Heat Pump compressor
(Single Stage Heat Pumps ONLY.)
x
RH
x
RC
x
G
x
Y/ O
x
W/ B
x
Y1

11
Mount Wallplate and Thermostat
■Remove the wallplate from your thermostat by
pressing the release tab on the bottom of the
thermostat. (See Figure 2.)
■Position wallplate on wall and pull existing wires
through large opening. Then level for appearance.
Mark holes for plastic anchors provided if your
existing holes do not line up with those on the
Climate Technology wallplate.
■Drill holes with 3/16” bit and gently tap anchors
into the holes until flush with wall.
■Reposition wallplate to wall, pulling wires through
large opening. Insert mounting screws provided
into wall anchor and tighten. (See Figure 3.)
Figure 2 Figure 3
NOTE: 5-wire Systems
If your thermostat has one wire marked R or RH (4-wire system), then leave the jumper wire between the RH and
RC terminals on the wallplate.
Otherwise, if you have separate RH and RC wires (5-wire system), then remove the jumper wire between the RH
and RC terminals.
Y1
W/B
Y/O
Rh
Rc
G

12
INSTALLATION
Connect Wires and Mount Thermostat Cover to Wall Plate
■Match and connect the labeled wires to the appro-
priate coded terminal screws on the wallplate. (See
Figure 4, 5.) Ignore any wires which may be present,
but which were not connected to the old thermostat.
■Refer to the Wiring Diagrams below to be sure your
system is wired correctly.
■If your system is a single-stage heat pump and
uses an O or B wire, you must move the System
Selector switch inside the thermostat to the Heat
Pump position. If you have a normal furnace or
electric system, leave the switch in the Standard
position. Refer to the System Selector section on
the back for more information on this switch.
■Be sure to tighten the terminal screws securely,
otherwise a loose wire could cause operational
problems with your system or thermostat.
■Push excess wire back into the hole to prevent interfer-
ence when installing the thermostat to the wallplate.
■Make sure the System Switch is set to OFF, and the
Fan Switch is set to AUTO.
■Insert the bottom tab on the thermostat body into
the slot at the bottom of the wallplate. Press the
top of the thermostat body to snap it into the
wallplate. Refer to Figure 6. (NOTE:
Do not force
the thermostat onto the wallplate, as the ter-
minal pins may be damaged. If it does not
snap properly, the thermostat may not work.
)
■Insert the two AA size alkaline batteries, observing
the polarity marked inside the battery compartment.
■Switch on the main power at the panel or furnace.
x
RH
Figure 4 Figure 5
GRcRhY/O W/B Y1
Figure 6

13
Selector Switches
In order for this Climate Technology thermostat to
control your system, the system type must be speci-
fied by selector switches on the printed circuit board
inside the thermostat.
NOTE: When changing these features after instal-
lation, move the HEAT / COOL selector switch to
OFF before removing the thermostat from the
wall.
System Selector Switches:
■Heating system selector (HG – HE switch)
The factory position for this switch is in the “HG”
position. Leave it in this position if you have a gas
furnace or an oil burner.
If you have an electric furnace, test to see
whether the Heat and Fan come on as expected.
If Fan operation is normal, leave the switch in the
“HG” position.
If the Fan does not come on within a minute of
the thermostat calling for Heat, change the switch
position to “HE.”
The system selector has no effect in the cool-
ing mode.
NOTE:
“HG” position is for gas and most
other systems. “HE” position is for certain
electric systems having a fan relay.
■ Furnace or Heat Pump selector (STD - HP switch)
The factory position for this switch is in the STD
position. Leave it in this position if you have ANY
system that uses gas, oil, electric, or hot water heating.
If you have a single-stage Heat Pump (no auxiliary
or emergency heat source), then slide the switch to
the HP position.
■Auto Recovery selector (DISABLE / ENABLE)
Your thermostat is set from the factory with the Auto
Recovery Feature enabled, which complies with the
EPA ENERGY STAR®Program. If you prefer to use
normal recovery, slide the switch to the ALT position.
Refer to page 32 for a complete discussion of the
Auto Recovery feature.
Figure 7
Fan Option
(SW6)
System Selector
(SW5)
DISABLE
Auto Recovery
(SW2)
ENABLE
STD HP
HG
HE

14
PROGRAMMING
Setting Time and Day
■The LCD will show this information when batteries
are first installed, or after the Reset button is
pressed. The temperature will update after a few
seconds.
■During time and day setting mode, the temperature
and program displays will go blank.
■Example: Set the Thermostat to the current time of
2:16 pm on Saturday. Refer to the Steps below.
STEP 1: ■Press to enter time and day setting mode. The cur-
rent hour and the AM / PM indicator will be flashing.
■Press to change the Hour up or down to the
current hour.
Note the AM / PM indicator, as the display will
change at 12 AM and 12 PM.
STEP 2: ■Press again to change from hour setting to minute
setting. The current minute will be flashing.
■Press to change the Minute up or down to the
current minute.
TEMP
AM
M
4
AM
M
day/time
day/time
PM
M

STEP 3: ■Press again to change from minute setting to day
setting. The current day will be flashing.
■Press to change the Day up or down to the
current day.
STEP 4: ■Press again to change back to the
normal display.
NOTE:
You may press
hold
/return
at any time during Day and Time setting to return to the
normal display.
DAYLIGHT SAVING TIME
■Press and hold.
■Press to enter Daylight Saving Time.
PM
M
TEMP
PM
SA
2
day/time
day/time
hold
/return
or
TEMP
2
AM
SA SET TEMP
day/time
or
(continued)

16
PROGRAMMING
Setting Time and Day (continued)
12 HR. / 24 HR. TIME FORMAT
Your thermostat is set from the factory in normal 12
(AM / PM) time format. To change to 24 hour (military)
time, press
program
at any time while the Hour,
Minute, or Day is flashing to toggle between the 12
hour and 24 hour formats. The AM / PM indicator will
not be displayed in 24 hour mode. Both the current
time and all programs will automatically change to the
selected format.
Default Programs
Studies conducted by the Department of Energy estimate
that setting your thermostat back 10°F (6°C) for two 8-hour
periods during winter can reduce your fuel bill by as much as
33%. By setting your thermostat up 5°F (3°C) for two 8-hour
periods during summer you can reduce your fuel bill up to 25%.
Your Climate Technology thermostat is pre-pro-
grammed to meet the ENERGY STAR®guidelines for
energy efficiency.
■The thermostat is pre-programmed for all 7 days of the week as shown below.
■Refer to Manual Programming on page 18 for instructions on entering or changing the programs.
Temperature in F°(C°)
Program Number Time Heat Cool
16:00am 68°F (20°C) 78°F (26°C)
28:00am 60°F (16°C) 85°F (29°C)
34:00pm 68°F (20°C) 78°F (26°C)
410:00pm 60°F (16°C) 82°F (28°C)

17
Personal Program Schedule
Before programming or changing programs, use this
Personal Program Schedule to determine which times
and temperature settings will best satisfy both your
comfort and energy saving requirements.
Use a pencil so you can revise your records each time
you change your temperature settings.
Heating
Day Prog. 1 Prog. 2 Prog. 3 Prog. 4
Mon. Time Time Time Time
Temp Temp Temp Temp
Tues. Time Time Time Time
Temp Temp Temp Temp
Wed. Time Time Time Time
Temp Temp Temp Temp
Thurs. Time Time Time Time
Temp Temp Temp Temp
Fri. Time Time Time Time
Temp Temp Temp Temp
Sat. Time Time Time Time
Temp Temp Temp Temp
Sun. Time Time Time Time
Temp Temp Temp Temp
Cooling
Day Prog. 1 Prog. 2 Prog. 3 Prog. 4
Mon. Time Time Time Time
Temp Temp Temp Temp
Tues. Time Time Time Time
Temp Temp Temp Temp
Wed. Time Time Time Time
Temp Temp Temp Temp
Thurs. Time Time Time Time
Temp Temp Temp Temp
Fri. Time Time Time Time
Temp Temp Temp Temp
Sat. Time Time Time Time
Temp Temp Temp Temp
Sun. Time Time Time Time
Temp Temp Temp Temp

18
PROGRAMMING
Manual Programming
■Your thermostat can be programmed for week-
days and weekends, or have unique programs for
all 7 days. Use Weekday/Weekend Programming
below or 7-day Programming on page 21 to enter
or revise programs to match your Personal Pro-
gram Schedule.
■Familiarize yourself with Manual Programming, so
that you can easily modify your programs as your
comfort needs change. The example below dem-
onstrates how to program your thermostat.
NOTE:
1) The program time can be set in 10
minute increments, and remains the
same for both Heat and Cool programs.
2) The program temperature can be set
in increments of 1°F (1°C).
3) After 15 seconds without a key press,
the thermostat will return to normal
display mode.
4) When setting the program time, note
the AM / PM indicator.
5) With the Auto Recovery feature en-
abled, you do not need to set your
comfort program times early. Auto
Recovery will determine how early to
turn your system on, so that the room
is comfortable at the program time.

(continued)
Weekday/Weekend Programming
■Slide System Selector Switch to HEAT or COOL to
program the corresponding system.
NOTE:
If the system selector is in the OFF position, no programming is
permitted. The LCD display will show only dashes when the program key is pressed.
STEP 1: ■Press to enter program mode. HEAT or COOL will
be displayed on the LCD.
STEP 2: ■The Program hour and AM or PM indicator are
flashing. Press to change the hour.
STEP 3: ■Press again to change to the minute position.
The current minute will be flashing.
■Press to change the minute.
system
cool
heat
off
program
program
1
HEAT
AM
MTHWTF
HEAT
AM
MTHWTF
1

20
PROGRAMMING
Weekday/Weekend Programming (continued)
STEP 4: ■Press again to change to the program temperature.
The current temperature will be flashing.
■Press to change the temperature.
STEP 5: ■Press again to move to the next program number.
■Repeat steps 3 - 5 to change the remaining
weekday programs.
STEP 6: ■Press to change to weekend programs.
■Repeat steps 3 - 5 to change the weekend programs.
■Press to exit Program mode, or wait 15 seconds to
exit automatically.
program
program
HEAT
AM
SA SU
1
prog day
hold
/return
1
HEAT
AM
MTHWTF