Hunter 44550 User manual

OwnerÕs Manual Model 44550
SINCE 1 8 8 6
®
AUTO SAVER 550
5:
7
2
2
2
3

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Other Quality Products from Hunter
To locate your nearest Hunter Dealer, call 1-800-4HUNTER,
or visit The Hunter Fan Company website: www.hunterfan.com
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Introduction
Model Information:
Model Number ____________________________________
Serial Number _____________________________________
Date Purchased____________________________________
Where Purchased___________________________________________________________
CONGRATULATIONS!
Your new Hunter electronic thermostat will provide years of
reliable service. By saving energy, your thermostat will pay for
itself during its first season of use. Thank you for buying a
Hunter product!
Please read this manual for complete instructions on installing
and operating your thermostat.
If you require further assistance, call Hunter Technical Support
at 901-745-9222 from 8 a.m. to 5 p.m. Central Time.
44550

Table of Contents
Read This Before Installing Thermostat 6
Features 8
What You Need 10
Remove Old Thermostat 10
Wire Labeling 11
Mount Wallplate and Thermostat 12
Selector Switches 14
Setting Time and Day 16
Auto Programming 17
Personal Program Schedule 18
Manual Programming 19
Weekday / Weekend Programming 19
7-Day Programming 21
Reviewing Programs 22
Reviewing the Current Temperature Setting 23
System Selector Switch 24
Fan Switch 24
(continued)
INTRODUCTION
INSTALLATION
PROGRAMMING
OPERATIONS
4-5

OPERATIONS (continued)
SAFETY FEATURES
TROUBLESHOOTING
WIRING DIAGRAMS
Temporary Manual Override 24
Permanent Manual (Vacation) Override 25
Auto Season Changeover 26
Home Today 26
Energy Monitor 28
Filter Monitor 29
Auto Recovery 30
Keyboard Lock 31
Backlighting 31
Low Battery Warning 32
Error Mode 33
Auto Cut-Off 33
Problems & Solutions 34
Technical Support 35
Heat / Cool Systems 36
Single-Stage Heat Pump Systems 37
Heat Only / Cool Only Systems 38
Table of Contents (continued)

IMPORTANT
1
Read the entire installation section of this Owner’s
Manual thoroughly before you begin to install or
operate your Hunter Thermostat.
REMOVE THE MYLAR LABEL FROM THE LCD DISPLAY WINDOW.
INSTALLATION
2
All installation is normally performed at your
thermostat.
ARMCHAIR PROGRAMMING
3
Y ou 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 Hunter Thermostat.
Note: At initial power-up this thermostat is programmed at 68°F
(20°C) for Heat and 78°F (26°C) for Cool. Any change to the set
temperature will be treated as a Permanent Manual Override. See
page 25 for more information. Press Auto Program to load the
built-in energy saving programs.
OPERATION
4
Y our 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 Hunter Thermostat will NOT control multi-stage heat
pumps or 110/220 Volt systems.
COMPRESSOR PROTECTION
5
T he 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
provide a delay when there are power outages.
TEMPERATURE RANGE
6
Y our thermostat can be programmed between 40°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 displayed if the temperature is lower than
32°F (0°C).
NOTE: The thermostat will automatically change to the Cool
mode if the thermostat measures a temperature over 99°F
(37°C). “Hi” will be displayed on the LCD, and the Cooling
system will turn On. Similarly, the thermostat will
automatically change to the Heat mode if the temperature is
below 32°F (0°C). “LO” will be displayed on the LCD, and the
Heating system will turn On.
Read This Before Installing Thermostat 6-7

Read This Before Installing Thermostat (continued)
POWER FAILURE
7
W henever the main power is interrupted or fails, the
battery power retains the programs and current time.
AUTO RECOVERY
8
Your thermostat is set from the factory to gradually recover
the room temperature from an energy saving program to
your comfort program. Therefore, the thermostat may turn
your system on several minutes prior to your programmed
time. This operation is normal, but can be turned off. Refer to
the Selector Switches information on pages 14-15.
BATTERY WARNING
9
F resh alkaline batteries should provide over one year of
service. However, when the batteries become drained,
“BATT” will alternate on the display with the current time.
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 “BATT” flashing on the LCD display.
CAUTION: Once the “BATT” only display occurs, the
thermostat is shut down, and your system 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.
!

Features
HOME TODAY: Overrides energy-
saving program temperatures while
you are at home for the day.
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.
Temperature Keys: Keys
for raising or lowering
temperature settings.
Soft-touch
programming keypad,
see details below.
Light Bar: Activates INDIGLO®
night-light to allow display
viewing in the dark.
System Switch: System
selector switch for Cool,
Off, Heat or Auto.
Fan Switch: Fan switch for
Automatic or Continuous
On fan operation.
Battery Door: Front-
access battery door
allows easy battery
changes.
Alpha-numeric display shows time, day,
temperature, program number, and other
feature information as required.
8-9
COOL AUTOOFF HEAT
AUTOONFAN
M T W Th F Sa Su SETTEMP
AM
PM C
C
H
M
°
°
TEMP
AUTO COOLHEAT
Usage TodayYesterdayThis Week LastWeekTotal
1234
HOME
TODAY
ENERGY

Provides permanent
temperature setting by
overriding stored
programs. It also returns
the thermostat to current
program control from
manual override or Home
Today mode.
For entering minute of day.
Enters Program Mode for
reviewing and changing
weekday, weekend, or
daily programs.
Selects the day
or days to review
or change in
Program Mode.
Returns display to
current time and
temperature.
Automatically
programs the
thermostat to its
built-in E
NERGY
S TAR
®
compliant
program
settings. See
page 17.
For entering day of week.
Reviews filter usage in
hours and minutes. Also
resets filter counter to zero.
For entering hour of day.
MIN
AUTO
PROGRAM
HOLD
CLEAR
HOUR
PROG
DAY
FILTER
PROG
DAY RETURN
As an E NERGY S TAR
®
Partner, Hunter Fan
Company has determined
that this programmable
thermostat meets the
E
NERGY S TAR
®guidelines for
energy efficiency.

10-11
INSTALLATION
This thermostat includes two #8 slotted screws and two wall
anchors for mounting. To install your thermostat, you should have
the following tools and materials.
■Slotted Screwdriver(s)
■Phillips Screwdriver
■Hammer
■Electric drill and 3/16" bit
■Two 1.5 V (AA) size alkaline batteries
What You Need
CAUTION: Do not remove any wiring from existing
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 locking 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).
Remove Old Thermostat
TYPICAL HOME THERMOSTATS
Figure 1
Wall Mounting Plate Thermostat Cover
Wall Mounting Plate Thermostat Cover

■ 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 this page.
■ 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 labeling procedures correctly, you do not have to
be concerned about how many wires there are.
■ There is often no terminal 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 PROVIDED TO THE WIRE AS
SHOWN IN TABLE A ON THIS PAGE. (For example, attach the
label marked W to the wire which 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 so
that no hot or cold air can enter the back of the thermostat from
the wall. This air could cause a false thermostat reading.
Wire Labeling
If the code letter on your
existing thermostat is then mark the wire with label shown and connect to thermostat terminal shown
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.
WGYRH
RC
RH
G
W
RC
O/B
Y/Y1
RH
RH
RC
RC
G
G
Y/Y1
Y/Y1
W
W
O/B
O/B
RH, R,
VR or 4
24 Volt
G or F
Fan
RC, VC
24 Volt Cool
Y, Y1, C or M (See Note)
Air Conditioning
Compressor
W or H
Heating
Not for heat pumps
O, B, or R
Reversing Valve
(Single-stage
Heat Pumps only)
Table A

■ 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 Hunter 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.)
12-13
INSTALLATION
Mount Wallplate and Thermostat
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.
Figure 2
OB
RC
G
Y/Y1
W
RH
Figure 3

■Match and connect the labeled wires to the appropriate
coded terminal screws on the mounting plate. (See
Figure 4, 5.) Ignore any wires which may be present,
but which were not connected to the old thermostat.
■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 hole to prevent interference
with mounting of the thermostat cover.
■Make sure the System Switch is set to OFF, and the
FAN-AUTO Switch is in AUTO.
■If your system has an O or B wire, you must move the
Heat Pump selector switch to the appropriate position.
Refer to the next page for more information.
■Insert the bottom tab on the thermostat body into the
slot at the bottom of the wallplate. Press top of the
thermostat body to snap it into the wallplate. NOTE:
Do not force the thermostat onto the wallplate, as
the terminal 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 on the unit.
■Switch on the main power at the panel or furnace.
FIGURE 4 FIGURE 5
xxx
+
+
+
WRH
RC G
Y/Y1 O/B
RH
RH
Connect Wires and Mount Thermostat Cover to Wall Plate

In order for this Hunter thermostat to control your system, the
system type must be specified by selector switches on the printed
circuit board inside the thermostat. There are also other selector
switches that allow you to customize the features to suit your needs.
NOTE: When changing these features after installation, 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 cooling 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 (NORMAL – O – B switch)
The factory position for this switch is in the NORMAL 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 position
that matches your Reversing Valve type. If your heat pump
system has a “B” wire, slide the switch to “B” for your
reversing valve that activates in HEAT mode. If your heat pump
system has an “O” wire, slide the switch to “O” for your
reversing valve that activates in COOL mode.
14-15
INSTALLATION
Selector Switches
F°/C° selector
(SW5) 12 Hr./24 Hr. selector
(SW6)
Span selector
(SW7)
Recovery
selector
(SW8)
HG – HE switch
Normal – O – B – switch
SWITCH SETTING
SW NAME ON
*
OFF
SW5 F/C CELSUIS FAHRENHEIT
SW6 12/24 24HOURS 12 HOURS
SW7 SPAN +2F/-1F +1F/-1F
SW8
RECOV. DISABLE ENABLE
*
DEFAULT SETTING NORMAL
HE HG
BO

Switch Setting
Switch Function Alternate Standard
SW 5 F° / C° Celsius Fahrenheit
SW 6 12 Hr. / 24 Hr. 24 Hour 12 Hour
SW 7 Span +2°F / –1°F +1°F / –1°F
SW 8 Auto Recovery Disable Enable
Table B
Feature Selector Switches:
■ F° / C° selector (Fahrenheit / Centigrade) – Switch 5
Your thermostat is set for F° mode from the factory. In order to
change to C° mode, slide the switch to C° and press the reset
button on front of the thermostat with a paper clip.
NOTE: Unless the reset button is pressed, the thermostat
will not change temperature mode.
■ 12 Hr. / 24 Hr. selector – Switch 6
Your thermostat is set for normal 12 hour (AM / PM) time
format. To change to 24 hour (military) time, slide the switch to
the 24 position. This change may be made without resetting
the thermostat, and will automatically change the current time
display and all program times in memory.
■ Span selector - Switch 7
Your thermostat is set to cycle at 1° F (0.5°C) above and below
the set temperature. If you require slower temperature cycles in
Heat mode, you can select +2°F / – 1°F by sliding the switch to
the ALT position. This may be necessary if your heating system
cycles too rapidly.
■ Auto Recovery selector - Switch 8
Your thermostat is set from the factory with the Auto Recovery
Feature enabled, which complies with the EPA E
NERGY S TAR
®
Program. If you prefer to use normal recovery, slide the switch
to the ALT position.
Refer to page 30 for a complete discussion of the Auto
Recovery feature.
Feature Selector Summary:
Table B below summarizes the Feature Switches discussed
above. A similar table is printed directly on the circuit board for
your quick reference.

16-17
PROGRAMMING
Remove the mylar label covering the LCD display window before operating thermostat.
Setting Time and Day
HOUR
MIN
DAY
RETURN
EXAMPLE:
Set the
thermostat
to the
current time
of 9:43 a.m.
on
Saturday.
Refer to
Figure at
right.
■ During time and day setting mode, the temperature and program
displays will go blank.
■ Press and hold to rapid advance to the current hour. Tap to advance one
hour at a time. Note the AM / PM indicator, as the display will cycle
through 24 hours.
■ Press and hold to rapid advance to the current minute. Tap to advance
one minute at a time.
■ Tap to advance one day at a time.
■ When finished, press to return to the Normal time and temperature
display or wait 15 seconds for it to return to Normal mode automatically.
■ Initial display after power-up or reset. The LCD will show the information
when batteries are first installed, or after the Reset button is pressed. The
temperature will update after a few seconds.
MT W Th F Sa Su
AUTO COOL HEAT TEMP
12:00
SET TEMP
1234
°
C
H
°
C
H
AM
PM
72
MTWThFSa Su
AUTO COOL HEAT TEMP
89:43
SET TEMP
1234
°
C
H
°
C
H
AM
PM
88
MTWThFSa Su
AUTO COOL HEAT TEMP
89:43
SET TEMP
1234
°
C
H
°
C
H
AM
PM
71

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 thermostat is capable of holding up to 4 separate programs
for each day of the week. You can program all weekdays, Monday
to Friday, to the same 4 programs as shown in the table, or each
weekday can have a different set of 4 programs. Similarly weekend
programs, Saturday and Sunday, can be the same 4 programs or
each weekend day can have a different set of 4 programs.
Your Hunter thermostat is pre-programmed to meet the E
NERGY
S TAR
®
guidelines for energy efficiency. Note that it is easier to
modify these programs than to program the thermostat manually.
Auto Programming
Temperature in F° (C°)
Program Number Time Heat Cool
1 6:00am 68°F (20°C) 78°F (26°C)
2 8:00am 60°F (16°C) 85°F (29°C)
3 4:00pm 68°F (20°C) 78°F (26°C)
4 10:00pm 60°F (16°C) 82°F (28°C)
■ Press once. During Auto Programming, the display will change as shown.
■ The thermostat will be programmed for all 7 days of the week as shown below.
MTWThFSaSu
AUTO COOL HEAT TEMP
AU:TO
SET TEMP
1234
°
C
H
°
C
H
AM
PM
88
AUTO
PROGRAM
■ Refer to Manual Programming on page 19 for instructions on entering or changing the programs.

18-19
PROGRAMMING
Personal Program Schedule
Day Program 1 Program 2 Program 3 Program 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
Heating Program 1 Program 2 Program 3 Program 4
Time Time Time Time
Temp Temp Temp Temp
Time Time Time Time
Temp Temp Temp Temp
Time Time Time Time
Temp Temp Temp Temp
Time Time Time Time
Temp Temp Temp Temp
Time Time Time Time
Temp Temp Temp Temp
Time Time Time Time
Temp Temp Temp Temp
Time Time Time Time
Temp Temp Temp Temp
Cooling
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.

■ Your thermostat can be programmed for weekdays 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
Program Schedule. The same steps are used when entering
programs for the first time, or revising programs entered during
Auto Programming.
■ When batteries are first installed, the thermostat has all 4 programs
set for 68°F (20°C) in Heat mode and 78°F (26°C) in Cool mode.
NOTE: There are no energy saving time or temperature
settings until the thermostat is Auto Programmed or
Manually Programmed.
■ Familiarize yourself with Manual Programming, so that you can
easily modify your programs as your comfort needs change. The
example below demonstrates the Manual Programming method.
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) The Heat setpoint can not be set higher than the
Cool setpoint, and the Cool setpoint can not be set
lower than the Heat setpoint.
4) If the system selector is in AUTO mode, the current
operating mode will be used for programming.
5) After 15 seconds without a key press, the
thermostat will return to normal display mode.
6) When setting the program time, note the AM / PM
indicator.
7) With the Auto Recovery feature enabled, 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.
Manual Programming
Weekday/Weekend Programming
Step 1
■ Slide System Selector Switch to HEAT or COOL to
program the corresponding system.
-- -- -- --
COOL OFF HEAT AUTO
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.

20-21
PROGRAMMING
Weekday/Weekend Programming (cont.)
Step 3
Step 5 ■ Press to change to weekend programs.
■ Repeat Steps 3 and 4 to complete the weekend programs.
Step 6 ■ If you desire only weekend and weekday programs, press to return to
normal mode.
■ After 15 seconds, the thermostat will return to normal mode
automatically.
RETURN
Step 7
■ Change the System Selector Switch to the other system,
and repeat Steps 2 through 6 above.
PROG
DAY
MTWThFSa Su
AUTO COOL HEAT TEMP
87:30
SET TEMP
1234
°
C
H
°
C
H
AM
PM
70
MTWThFSa Su
AUTO COOL HEAT TEMP
16:00
SET TEMP
1234
°
C
H
°
C
H
AM
PM
68
HOUR MIN
Step 4 ■ Press to move to programs 2, 3 and 4.
■ Repeat Step 3 to complete the weekday programs.
PROG
Step 2 ■ Press PROG key to enter program mode, display shows weekday programs.
■ Display for HEAT mode shown.
PROG
COOL OFF HEAT AUTO
MTWThFSa Su
AUTO COOL HEAT TEMP
16:00
SET TEMP
1234
°
C
H
°
C
H
AM
PM
68
Use and to change the setpoint time.
Use and to change the setpoint temperature.
Step 2
Step 3
Step 5