This product does not contain mercury. However, this product may replace a product that contains mercury. Mercury and products containing mercury must not be discarded in household trash. Refer to www.thermostat-recycle.org for information on disposing of products containing mercury.
Thermostat Applications | Maximum Stages Heat/ Cool |
Single Stage Cooling, One or Two Stage Heating – 1 Stage Aux Heat Electric only | 2/1 |
Index
Thermostat Installation | 2-4 |
Wiring | 2 |
Installer Menu | 3-4 |
Test Equipment | 4 |
Using the Thermostat | 5-7 |
Thermostat Overview | 5 |
Thermostat Operation | 6 |
Thermostat Schedule/Programming | 6-7 |
Troubleshooting | 7-8 |
Homeowner Help Line | 8 |
Electrical Rating:
Rated Differentials (@ 6°F/ Hr): Fast.Med Slow
WIRING
Refer to the equipment manufacturer’s instructions for specific system wiring information. After wiring, see INSTALLER MENU for proper thermostat configuration. Wiring table shown are for typical systems and describes the thermostat terminal functions.
Terminal Designations | Terminal Function |
GL | Low Speed Fan Relay |
R | Power (24V) |
O/B | Changeover Terminal-Energized in Cool (O) or Heat (B) for Heat Pump |
Y | Heat and Cool Mode 1st Stage Compressor |
GH | High Speed Fan Relay |
W | Heat Mode – 2nd Stage Heat (Electric) |
C | Common wire for 24V |
WARNING
CAUTION
To prevent electrical shock and/or equipment damage, disconnect electrical power to system, at main fuse or circuit breaker box,until installation is complete.
To access the INSTALLER’S MENU set the system switch to the OFF position and then press and hold the temperature
Turn on power to the system.
Fan Operation
If your system does not have a G terminal connection, skip to Heating System.
Heating System
Cooling System
CAUTION
THERMOSTAT OVERVIEW
Before you begin using your thermostat, you should be familiar with its features, display and the location/operation of the thermostat buttons and switches.
THERMOSTAT BUTTONS AND SWITCHES | THE DISPLAY |
1.) Fan Switch | 9.) Thermostat is protecting the equipment from short cycling (5-minute delay) |
2.) System Switch | 10.) Indicates that the system is running in cool, heat or auxiliary mode (The auxiliary will run in Heat mode when the heat pump cannot maintain the set temperature.) |
3.) Set Correct Time | 11.) Displays the current time |
4.) Hold a Permanent Temperature or Run Program | 12.) Battery status indicator |
5.) Access Programming | 13.) Low battery indicator |
6.) Raises Temperature Setting | 14.) Day of the week used when programming a schedule |
7.) Lowers Temperature Setting | 15.) Permanent hold (bypassing the schedule) |
8.) Access Menu Options | 16.) Temperature setpoint |
17.) Displays when the thermostat setpoint has reached the maximum or minimum setting. | |
18.) Displays change filter reminder | |
19.) SEE TROUBLESHOOTING |
Whenever “
Set Current Time and Day
Note: Time icons will flash at initial power-up or after a reset.
THERMOSTAT SCHEDULE / PROGRAMMING
For tips on programming your thermostat to receive optimal comfort, convenience and energy savings go to: thermostathelper.com
Energy Saving Factory Schedule
This thermostat is programmed with the energy-saving settings shown in the table below for all days of the week.
P1/Wake | P2/Leave | P3/Return | P4/Sleep | |
Heating Schedule | 6:00 AM – 70°F | 8:00 AM – 62°F | 5:00 PM – 70°F | 10:00 PM – 62°F |
Cooling Schedule | 6:00 AM – 78°F | 8:00 AM – 85°F | 5:00 PM – 78°F | 10:00 PM – 82°F |
Note: Thermostat can be programmed on or off the subbase |
ENTERING YOUR PROGRAM
Set Current Time and Day
Enter Heating Program
CAUTION
If the outside temperature is below 50°F, disconnect power to the cooling system before programming.
Energizing the air conditioner compressor during cold weather may cause personal injury or property damage.
Symptom | Possible Cause | Corrective Action |
No Heat/ No Cool/ No Fan (common problem) | 1.) Blown fuse or tripped circuit breaker 2.) Furnace power switch to OFF 3.) Furnace blower compartment door panel loose or not properly installed 4.) Loose connection to thermostat or system | 1.) Replace fuse or reset breaker 2.) Turn switch to ON 3.) Replace door panel in proper position to engage safety interlock or door switch 4.) Tighten Connections |
No First Stage Heat | 1.) System Switch not set to Heat 2.) Loose connection to thermostat or system 3.) Heating System requires service or thermostat requires replacement 4.) Misconfiguration between menu item 20 and jumper wire 5.) O/B Switch set incorrectly | Verify thermostat and system wires are securely attached. Diagnostic: Set System Switch to Heat and raise the setpoint above room temperature. Within five minutes the thermostat should make a soft click sound and “Heat On” should appear on display. This sound indicates the thermostat is operating properly. If the thermostat does not click, try the reset operation listed below. If the thermostat does not click after being reset, contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, contact the furnace manufacturer or a service person to verify the heating system is operating correctly. Make sure that menu item 20 and the jumper wire match. |
Symptom | Possible Cause | Corrective Action |
No Cool | 1.) System Switch not set to Cool 2.) Loose connection to thermostat or system 3.) Cooling System requires service or thermostat requires replacement 4.) O/B Switch set incorrectly | Verify thermostat and system wires are securely attached. Diagnostic: Set System Switch to Cool and lower setpoint below room temperature. Same procedures as diagnostic for “No Heat” condition except set the thermostat to Cool and lower the setpoint below the room temperature. There may be up to a five minute delay before the thermostat clicks in Cooling if the compressor lock-out option is selected in the installer menu. (see INSTALLER MENU, item 50) |
Heat, Cool or Fan Runs Constantly | Possible short in wiring, thermostat, heat, cool or fan system | Check each wire connection to verify they are not shorted or touching other wires. Try resetting the thermostat. If the condition persists contact your HVAC service person. |
Thermostat Display & Thermometer Disagree | Thermostat display requires adjustment | Display can be adjusted +/-5°. See User Menu item 04 |
Furnace (Air Conditioner) Cycles Too Fast or Slow (narrow or wide temperature swing) |
The location of the thermostat and/or the size of the Heating System may be influencing the cycle rate | Digital thermostats provide precise control and cycle faster than older mechanical models. The system turns on and off more frequently, but runs for a shorter time. If you would like to increase cycle time, choose SLO for slow cycle in the Installer menu. (Reference menu items 30 & 35) If an acceptable cycle rate is not achieved, contact your HVAC service person. |
“Call for Service” icon appears on displayed | 1.) Heating system is not able to heat the space to within 10 degrees of the setpoint within 2 hours 2.) Cooling system is not able to cool the space to within 10 degrees of the setpoint within 2 hours 3.) If “–” is displayed for the Room Tem- perature, a replacement thermostat is needed 4.) None of the buttons operate on the thermostat 5.) If “Call for Service” is flashing, com- pressor self diagnostic is detecting an issue with the outdoor unit | 1.) See corrective action for “No Heat” 2.) See corrective action for “No Cool” 3.) Replace thermostat 4.) Check for a stuck button
5.) Contact a service person to verify the equipment is operating correctly |
Resetting the Thermostat or Thermostat Settings
If the thermostat has good batteries, but has a blank display or does not respond to key presses, the thermostat should be reset by removing the batteries for 2 minutes. This reset will not change the menu settings. If the condition persists after reinstalling the batteries, replace the thermostat.
To conveniently reset only the user settings back to factory defaults, press the temperature
WARNING: This product contains a chemical known to the state of California to cause cancer birth defects and other reproductive harm.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againts harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no gurantee that interference will not occur in a partiduclar installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
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