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Congratulations!
Your new Hunter thermostat will provide years of reliable service. By saving energy, your thermo-
stat 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 1-888-830-1326 from 8am to 5pm
Central Time.
Before starting, remove the mylar label from the LCD display.
IMPORTANT INFORMATION
1. This thermostat is designed to work on the following systems:
Gas - Standing Pilot Single-Stage Heat Pumps - with no auxiliary heat
Gas - Electronic Ignition Electric Furnace
Gas - Fired Boilers Electric Air Conditioning
Gas - Milivolt Systems
Oil - Fired Boilers This thermostat will NOT control single-stage or multi-stage
Oil - Fired Furnace heat pumps or 110/220 V baseboard electric heating systems.
2. Temperature Range
This thermostat can be programmed between 45˚F and 95˚F (7˚C and 35˚C). It will display room
temperatures from 30˚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 30˚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 temperature drops below 40˚F (4˚C).
3. Compressor Protection
This thermostat provides a 3.5 minute delay after shutting off the cooling system before it can be
restarted. This feature will prevent damage to your compressor caused by rapid cycling. It does
not prevent a rapid compressor restart due to short power outages.
4. Battery Warning
Two fresh AA alkaline batteries should provide well over one year of service. However, when the
batteries become drained, the Low Battery Indicator will flash on the display. When this message
occurs, install new alkaline 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 flashing Low Battery Indicator on the LCD display.
CAUTION: When only the battery icon flashes on the display, 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
day/time
reset
system
heat
cool
off
program
filter
hold
/return
fan
auto
on
M
AM
4
TEMP
Hold / Return Key: Used for
setting a permanent (vacation)
hold, and for returning to the
normal display from Day & Time
setting, Programming, or Span
setting modes.
LCD Display: Shows
Time, Day, Temperature,
Program Number, and
other feature information
as required.
Low Battery Indicator:
Flashes when batteries
need to be replaced.
System Switch:
Selector switch for
Heat, Cool, and Off
Fan Switch: Fan
switch for Automatic
or Continuous fan
operation.
Battery Compartment:
Front access allows
easy insertion of two
AA 1.5V batteries.
Reset: Press with a paper clip to reset the
thermostat and return to power-up settings.
Front Door: Covers keys when not used for neat
appearance. Open by lifting from the bottom
Up and Down Keys: Keys for
changing the Temperature
setting. Also used for increasing
and decreasing selections in the
Time, Program, and Span
functions.
Day / Time Key: Used for entering the Clock
setting mode. Use with the Up and Down keys
to set the time and day.
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.
Filter Key: Resets filter change
counter to zero.
Battery Release Lever:
Push to pop batteries loose.
ENERGY STAR
®
PARTNER
As an ENERGY STAR
®
Partner, Hunter Fan Co. has determined that this programmable thermostat
meets the ENERGY STAR
®
guidelines for energy efficiency.
INSTALLATION
What You Need
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)
■ Small Philips screwdriver
■ Hammer
■ Electric drill and 3/16” bit
■ Two 1.5 V (AA) size alkaline batteries
Remove Old Thermostat
CAUTION: Do not remove any wiring from existing thermostat before reading the in-
structions 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 and thermostat. See Figure 1. Some thermostats will have
screws or other locking devices that must first be removed. Once the 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
Wall Mounting Plate Thermostat Cover
Wall Mounting Plate Thermostat Cover
Figure 1
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 below.
■ Note that this thermostat has multiple function terminals that allow Single-Stage Heat Pump
capability. 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 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 BELOW. (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.
W
G
Y
RH
RC