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CAUTION
About your thermostat
Honeywell’s TL8230A1003 thermostat can be connected to an electric heater to control the room temperature.
Supplied Parts
Place at Off to cut power to the heater (e.g., in the summer). This will not affect the time and temperature settings. When the backlight button or either of the buttons is pressed, the display illuminates for 12 second
Display
The thermostat normally displays the actual (measured) temperature. To view the setpoint temperature, briefly press either of the buttons. The setpoint will appear for 5 seconds. To change the setpoint temperature, press one of the buttons until the desired temperature is displayed. To scroll faster, press and hold the button.
NOTE: Connect the wires using the provided solderless connectors for copper wires.
Set the configuration switches
Configuration switches are on the back of the faceplate
# | Configurations | Up | Down |
1 | Display format | °F / 12 h | °C / 24 h |
2 | Early Start1 | Enable | Disable |
3 | Not used |
Early Start is used in Automatic mode only. When Early Start is enabled (on), the thermostat determines when to start heating so the Comfort temperature is attained at the beginning of periods 1 and 3. When Early Start is disabled (off), heating starts only at the beginning of periods 1 and 3; thus there is a delay before the Comfort temperature is reached.
Time and day
To set the clock and the day:
NOTE: The thermostat will automatically return to normal display if no button is pressed for 60 seconds
Daylight Saving Time
When the Daylight Saving Time function is enabled (On), the thermostat automatically switches to Daylight Saving Time on the second Sunday of March and to normal time on the first Sunday of November.
NOTE: The Daylight Saving Time function is disabled (default setting) when the clock loses its setting.
To set the Daylight Saving Time function and to set the date:
NOTE: The thermostat will automatically return to normal display if no button is pressed for 60 seconds.
The thermostat has 3 preset temperatures. Their default settings are shown in the following table.
Preset temperature | Intended use | Icon | Default setting |
Comfort | When at home | 70°F (21°C) | |
Economy | When asleep or away from home | 62°F (16.5°C) | |
Vacation | During prolonged absence | 50°F (10.0°C) |
To use a preset temperature:
Briefly press the appropriate preset temperature button (
the current setpoint and its icon will appear on the screen.
To modify a preset temperature:
The schedule consists of 4 periods per day, which represents a typical workday. The Comfort (
NOTE: If you wish to use only 2 periods, use the following combinations: “1 and 4” or “2 and 3”. Early Start (see page 9) will not work with any other combinations. You can have a different program every day; i.e., each period can start at a different time every day. The thermostat has been programmed with the following schedule
Running the schedule (Automatic mode)
In Automatic mode, the thermostat follows the programmed schedule (see page 11). To place the thermostat in this mode, press Mode/Ret until is displayed.
Temporary override of schedule
If you modify the setpoint temperature (by pressing the,
Permanent override of schedule (Manual mode)
To place the thermostat in Manual mode,
Data protection: In the event of a power failure, most settings are saved. However, the time and Daylight Saving Time must be set if the power failure lasts more than 6 hours. The thermostat will return to the mode that was active prior to the power failure
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of five (5) years from the date of purchase by the consumer. If at any time during the warranty period, the product is determined to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option).
If the product is defective,
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage that occurred while the product was in the possession of a consumer. Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE
FIVE-YEAR DURATION OF THIS WARRANTY. Some provinces do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may have other rights which vary from province to province. If you have any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422, or call 1- 800-468-1502
Customer Assistance
If you have any questions about the operation of your thermostat, please go to www.honeywell.com/yourhome, or call Honeywell Customer Care toll-free at 1-800-468-1502.
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