Aube Technologies TH303 User manual

TH303
Programmable Thermostat
Owner’s Guide
69-2680EF-07

Overview
About your new thermostat .............. 1
Quick reference to controls .............. 2
Quick reference to screen display .... 3
Installation
Removing the faceplate.................... 4
Wiring ............................................... 5
Installing the thermostat ................... 6
Quick start-up / Setting the clock...... 7
Operating modes
Automatic (Auto) mode..................... 8
Manual (Man) mode ......................... 9
Away mode..................................... 10
Countdown mode ............................11
Configuration
Default schedule............................. 12
Modifying the schedule................... 13
Setup menu .................................... 14
Setup procedure ............................. 16
Appendices
In case of difficulty .......................... 17
Specifications ................................. 19
3-year limited warranty ................... 20
Customer assistance...................... 21
Table of contents

TH303
1
This thermostat has been designed to control an electric heating system such as
a baseboard heater, a radiant ceiling, a convector or a fan-forced heater.
The thermostat CANNOT be used with:
• a resistive load under 0.83 A
• a resistive load over 10.4 A
• a system driven by a contactor or a relay (inductive load)
• a central heating system
SUPPLIED PARTS
• One (1) thermostat
• Two (2) 6-32 mounting screws
• Two (2) solderless connectors
About your new thermostat

Owner’s Guide
2
•To turn the screen backlight on,
press the Select button once. The
backlight will remain on for 12
seconds.
•To display the setpoint
temperature, press the Up or
Down button once. The setpoint
will be displayed for 5 seconds.
•To modify the setpoint
temperature, press the Up or
Down button until the desired value
is displayed.
•To enter or exit the programming
mode, press the Select button and
hold for 3 seconds.
Quick reference to controls
Up button
Down button
Select button
Help tab
Slide up from the
right and remove
to view information
on both sides.
Screen

TH303
3
Quick reference to screen display
Ambient temperature
Heating intensity indicator
(No icon appears when
heating is off.)
Time
Periods (see page 12)
Countdown mode (see page 11)
Manual mode (see page 9)
Day
Automatic mode (see page 8)
Away mode (see page 10)
Setpoint temperature
(see page 2)
Flashes during
Countdown mode

Owner’s Guide
4
TURN OFF POWER OF THE HEATING
SYSTEM AT THE MAIN ELECTRICAL
PANEL TO AVOID ELECTRIC SHOCK.
WARNING: Installation must be carried
out by a certified electrician and must
comply with national and local electrical
codes.
Loosen the screw holding the faceplate to
the base. The screw cannot be
completely removed and remains captive
on the base. Remove the faceplate from
the base by pulling the bottom section.
Removing the faceplate

TH303
5
Connect either one of the
thermostat wires to the
heater wire and the other
one to the power supply
wire using solderless
connectors for copper wires.
NOTE: Special CO/ALR
solderless connectors must
be used when connecting
with aluminium conductors.
Wiring
2-wire installation 4-wire installation
Power supply
Power supply

Owner’s Guide
6
1) Install the base onto an electrical box.
2) Place the FAN switch as follows:
Place at Yes if you have a fan-forced
heater (to prevent premature burnout
of the motor).
Leave at No for better temperature
regulation if you do not have a
fan-forced heater.
3) Reinstall the faceplate on the base and
secure it in place with the screw.
4) Apply power to the thermostat at the
main electrical panel.
Installing the thermostat
Keep air vents at top and
bottom of thermostat clean and
unobstructed at all times.
If you change the FAN switch position after you
have already applied power to the thermostat,
disconnect power to the thermostat at the
electrical panel for 3 seconds. The thermostat
will use the new setting when you reapply power.
FAN switch

TH303
7
When you power the thermostat, the Time menu flashes on the screen. Set the
thermostat’s clock and date as follows:
NOTE: At any time, you can access the Time menu by pressing the Select button
for 3 seconds and then pressing the Up button once.
Quick Start-up / Setting the clock and date
Time Menu Select the format Set the hour Set the minutes Set the year Set the month Set the date Normal display
Your new thermostat is already preprogrammed
and is now controlling the temperature!

Owner’s Guide
8
In Automatic mode, the thermostat follows the programmed schedule (see page 12).
To place the thermostat in Automatic (Auto) mode:
Temporary override
While the thermostat is in Automatic mode, you can press the Up or Down button to modify
the temperature. The new temperature will be used until the end of the current period. Auto
will flash during the override. You can cancel the override by pressing the Select button twice
to return to Automatic mode.
Automatic (Auto) mode
Normal display Auto mode
Select Auto

TH303
9
Use the Manual mode if you wish to keep the thermostat at the same
temperature indefinitely. In this mode, the thermostat will remain at this
temperature until you press the Up or Down button to change it.
To place the thermostat in Manual (Man) mode:
Manual (Man) mode
Set temperature
Normal display Manual mode
Select Manual

Owner’s Guide
10
The Away mode can be used when you are away for an undetermined length of
time. For frost protection while saving energy, the Away temperature is set by
default at 15°C (59°F) and cannot be modified by simply pressing the Up or Down
button. To modify the Away temperature, see page 16.
NOTE: The Away mode can also be used to prevent tampering of the setpoint
temperature in the summer season when heating is not required.
To place the thermostat in Away mode:
Away mode
Normal display Away mode
Select Away

TH303
11
Use the Countdown mode if you wish to keep the same temperature for a predetermined
length of time. The choices of countdown times are: 15, 30 or 45 min, or 1, 2, 4, 8, 12 or 18 hr,
or 1 to 14 days. At the end of the countdown, the thermostat automatically returns to the
previous mode and uses the temperature programmed for that mode. At any time, you can
cancel the Countdown mode by pressing the Select button.
To place the thermostat in Countdown mode:
Countdown mode
Set time
Normal display
Select Countdown Set temperature
Countdown
mode
To cancel the Countdown mode
Optional (last settings are used by default)
NOTE:
At any time during the
Countdown mode, you
can adjust the count-
down time and tempera-
ture by performing the
steps shown inside the
dotted rectangle.

Owner’s Guide
12
When placed in Automatic mode (see page 8), the thermostat follows the programmed
schedule. By default, the thermostat is programmed with the following schedule:
The schedule consists of 4 periods per day, which represents a typical work day. However, you
can program the thermostat to skip (cancel) the periods that do not apply to your situation. For
example,
Leave and Return periods are skipped for the weekend in the default schedule.
You can choose a different program every day; i.e., each period can have a different starting
time and a different temperature every day.
Default schedule
Monday to Friday
(Mo, Tu, We, Th & Fr)
Saturday and Sunday
(Sa & Su)
Period Starting time Temperature Starting time Temperature
Wake 6:00 (6:00 AM) 21.0°C (70°F) 6:00 (6:00 AM) 21.0°C (70°F)
Leave 8:00 (8:00 AM) 16.5°C (62°F) -:-- -
Return 18:00 (6:00 PM) 21.0°C (70°F) -:-- -
Sleep 22:00 (10:00 PM) 16.5°C (62°F) 22:00 (10:00 PM) 16.5°C (62°F)

TH303
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To modify the schedule, proceed as follows:
To skip a period : When the hour or the temperature of the period is flashing, press the Up and Down
buttons at the same time. (Alternatively, set its hour between 23:00 [11:00 PM] and 0:00 [midnight] or
its temperature below 5°C [41°F].) Its time and temperature display will be replaced by dashes (-).
NOTE: If you do not press any button for one minute, the thermostat will automatically save any
changes you have made and will
return to its normal display .
Modifying the schedule
Program menu
(3 sec.)
Select the days*
Normal display Select the period Set the hour Set the minutes Set the temperature
Select Exit to return to
the day selection menu
Select Exit to return
to normal display
* The days can be selected collectively (Monday to Friday, Saturday & Sunday, or Monday to Sunday) or individually.

Owner’s Guide
14
To modify the menu parameters, see page 16.
Setup menu (1/2)
Display Parameter Options Default setting
Temperature unit °C / °F °C
Away temperature 15°C - 30°C (41°F - 86°F) 15°C (59°F)
Daylight Saving Time 2On / Off On
Early Start 3On / Off Off

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1Away temperature
Set the temperature you wish to use when the thermostat is in Away mode (see page 10).
2Daylight 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.
3Early Start
Early Start is used in Automatic mode only. When Early Start is enabled (On), the thermostat
determines when to start heating so the desired temperature is attained at the beginning of
Wake and Return periods. When Early Start is disabled (Off), heating starts only at the
beginning of Wake and Return periods; thus there is a delay before you reach the desired
temperature.
Setup menu (2/2)

Owner’s Guide
16
The Configuration menu is shown below.
1) Press the Select button for 3 seconds to enter the main menu.
2) Press the Up button twice to enter the Configuration (Conf) menu.
Setup procedure
Configuration
Menu
Set unit of
temperature
Set Away
temperature
Set Daylight
Saving Time
Set
Early Start
To confirm To confirm To confirm To confirm
NOTE: If you do not
press any button for one
minute,
the thermostat
will automatically save
any changes you have
made and will
return to

TH303
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In case of difficulty (1/2)
PROBLEMS SOLUTIONS
Thermostat is hot. This is normal. Ensure that the heater capacity does not exceed the thermostat’s maxi-
mum load.
Displayed tempera-
ture is incorrect.
Remediate if any the following conditions exists:
• The thermostat is exposed to air draft.
• The thermostat is located near or above a heat source such as a light dimmer.
• The thermostat
displays LP
instead of the
temperature.
• The screen is
blank.
The thermostat is currently without power. This can happen in either condition:
• There is a power outage.
• The thermal protection device on the heater is opened. This can happen if the
heater is obstructed by furniture or curtain and has overheated, or if the heater’s
thermal protection device is too sensitive.
LP appears for the first five minutes. Then the screen becomes blank.

Owner’s Guide
18
In case of difficulty (2/2)
PROBLEMS SOLUTIONS
TIME is flashing. The thermostat was without power for more than 4 hours. Set its clock and date (Time
menu).
Temperature does
not change accord-
ing to the pro-
grammed schedule.
• Ensure the thermostat is in Automatic mode.
• Check the clock (Time menu) and the schedule (Prog menu). If the thermostat is
configured for 12-hour format, ensure that AM or PM appears on the screen.
LO is displayed The measured temperature is below the display range. Heating is activated.
HI is displayed The measured temperature is above the display range.
E1, E2 is displayed The thermostat performance is reduced due to a sensor error. Please contact technical
support for more information.