Simple S100 User manual

User Guide
TM

© 2017 EcoFactor, Inc.

1
Introduction
*If you do not have a C-wire, or are not sure, visit www.thesimple.com/compatibility
The thermostat supports up to 2 stages of heating and
2 stages of cooling for conventional systems, and 2 stages of heating/
cooling for heat pumps, with and without emergency heat.
A common wire (C-wire) or other 24VAC power source is required.*
To sign up for an account and begin your installation, visit:
home.thesimple.com/install
To adjust settings remotely, or to create your personalized schedule, visit
home.thesimple.com, or install the Simple thermostat mobile app for iOS or
Android.
WARNING: Line voltage and millivolt systems are not supported.

2
Manual and Wiring Labels Screws and Wall Anchors
The wall plate comes snapped into
the back of the thermostat.
The optional trim plate can
cover unnished areas under the
old thermostat. It can be used
In the Box

3
Connect your system’s wiring using the table below.
Terminal Function
RC 24VAC for cooling.
RH 24VAC for heating. If there is only one R wire (R, RH, RC) then
connect it to RH. May be labeled V or VR for Lennox.
C Common wire. May be labeled X for Rheem, Ruud, or Lennox;
B for Trane, York.
Y 1st stage compressor, A/C or heat pump. May be labeled M
for Lennox.
Y2 2nd stage compressor, A/C or heat pump.
W/E 1st stage heating, or heat pump emergency heat. Some
heat pumps may designate emergency heat as E or X2, or
auxiliary heat as W1 or W2. May be labeled Y for Lennox.
W2 2nd stage heating. Not used for heat pumps.
O/B Heat pump changeover valve.
Wiring Guide

4
A
B
C
D
J
I
H
E
F
G
Display

5
Outside temperature, shown when your
account is congured with a ZIP code.
Indoor temperature.
Error/warning indicator.
The message line provides information to
the user and displays the menu options.
Fan indicator, ashes when running.
Mode indicator, the heat or cool icon ashes
when running. Automatic mode switching
occurs when AUTO is shown.
Efciency indicator when energy saving
settings are applied.
Temperature setting for the current mode.
Lock indicator when front panel is locked.
Status display for Hold, Away duration, and
energy management events.
A
B
C
D
E
F
G
H
I
J

6
MODE AWAY
DOWN
UP
MENU
Buttons

7
Function
During Thermostat Operation While in Menu
UP increases the temperature
setting.
Previous menu item.
DOWN decreases the
temperature setting.
Next menu item.
MENU enters and exits the
Settings menu.
Return to previous menu.
MODE changes the system
mode, and cancels Hold, Away,
Utility Event, or Efciency
adjustments.
Selects current item or
enters sub-menu.
AWAY enters timed energy
saving settings. Press again
to exit.
Return to previous menu.

8
You can select whether Heat or Cool is provided using the circular MODE
button. The MODE button cycles sequentially through the available modes.
Only the modes supported by your system are shown. For example, a
furnace-only installation alternates between OFF and HEAT when the
MODE button is pressed. A conventional system with both heating and
cooling will cycle through OFF, HEAT, COOL, and AUTO each time MODE is
pressed.
If your system supports both heating and cooling, Auto Mode is a
convenient setting to automatically switch between Heat and Cool mode.
Changing Modes

9
Thermostat Modes
When OFF, the system is turned off. No heating or cooling
occurs.
HEAT icon indicates system is in Heat only mode and
ashes when the heating system is running.
COOL icon indicates system is in Cool only mode and
ashes when the cooling system is running.
AUTO mode switches between Heat and Cool depending
on the indoor temperature. A ashing Heat or Cool icon
indicates which mode is running.
EMERGENCY HEAT is only applicable for Heat Pumps. The
mode icon ashes when the system is running.
OFF

10
To the right of the display, the UP and DOWN buttons adjust your desired
temperature. Each button changes the temperature by 1 degree.*
Holding the UP or DOWN button automatically increases or decreases the
temperature setting.
Your thermostat has a schedule that changes the temperature according
to day and time. When making a temperature adjustment, this setting is
maintained until the next schedule interval.
If you manually adjust the temperature on your
thermostat, the display shows HOLD UNTIL and the
time of the next interval when the schedule resumes.
If the temperature is adjusted to match the schedule,
Your schedule can be enabled or disabled in the
menu.** When the schedule is disabled, your
temperature adjustments are held indenitely,
and the display shows HOLD.
Adjusting the Temperature
* When display is showing Celsius, each adjustment is by 0.5°C.
** If you’ve received your thermostat from a utility or energy company, you may be required to
keep the schedule enabled.

11
When a schedule is running, a manual adjustment can be cancelled by
pressing the MODE button. This returns you to the temperature setting
of your schedule and the HOLD UNTIL indicator is cleared.
Returning to Schedule

12
You can temporarily choose an energy-saving setting using AWAY button,
located in the lower-right. Pressing this button cycles through the
following choices:
• AWAY 2HRS
• AWAY 6HRS
• AWAY ON
• AWAY OFF
You may adjust the temperature for the Away period using the UP or DOWN
buttons while the away duration is ashing.
If no other button is pressed, after 5 seconds the current Away setting
is applied. Pressing the MODE button when Away is ashing accepts the
current settings and start Away immediately.
While any Away mode is active, manual temperature changes using UP or
DOWN buttons are disabled. You must cancel Away before making further
adjustments.
Setting Away

13
The Away temperature is held until the Away duration
expires, and the end time is shown in the status display.
Selecting AWAY ON is a permanent Away and the
temperature is held until Away is cancelled. In this case,
the UNTIL status is not shown.
When Away is in effect, it can be cancelled using either the MODE or AWAY
buttons. Canceling Away returns you to the schedule temperature setting
for the current day and time. If the schedule is not running, cancelling Away
returns to the same temperature setting when Away was started.
Cancelling Away

14
Your account may be congured to participate in Energy
Management Events. When an event is in-progress,
the lower-right display shows PRE EVENT or EVENT
and the UNTIL end time for the event. A PRE EVENT
may occur before an EVENT to help reduce your energy
consumption during peak hours.
Manual changes to temperature using the UP or DOWN buttons are disabled
during a PRE-EVENT or EVENT. The event must be cancelled before
adjustments can be made.
Energy Management Events
To cancel an Event that is in-progress, press the MODE button. If the event is
cancelled during the PRE EVENT phase, the subsequent EVENT phase will
continue to be applied.
Cancelling an Event

15
Your account can be congured with an energy efciency program that
makes automated adjustments to your temperature settings.
When these changes are applied, the Leaf indicator is
shown along with the current temperature setting.
When your schedule is enabled, the HOLD UNTIL time
shows the next schedule interval. Further automatic
adjustments may continue until that time.
You can continue to make adjustments using the UP or DOWN buttons.
However the Leaf indicator is turned off when you change to a less efcient
temperature. The Leaf indicator is also turned off when you enter Away.
For more information, please visit: www.thesimple.com/support/ee
Energy Efciency
When your schedule is enabled, pressing the MODE button cancels the
current Energy Efciency settings and returns to the temperature setting of
your schedule.
Canceling Energy Efciency

16
The MENU button on the lower-left front panel opens the thermostat menu.
The message line shows the current menu item, and the UP or DOWN
buttons can be used to navigate. The MODE button selects the current menu
or sub-menu item displayed.
Pressing MENU again exits the menu. After 20 seconds of inactivity, the
menu automatically exits.
Menu Settings

17
Main Menu
Menu Item Choices Description
FAN MODE AUTO
ON
Normally set to AUTO. When set to ON, the
fan runs and the fan indicator ashes.
SCHEDULE ON
HOLD
Normally set to ON to enable schedule
changes. When set to HOLD, temperature
adjustments must be changed manually. The
HOLD indicator is shown on the display.
>SETTINGS Enter the SETTINGS menu to customize user
preferences.
>NETWORK Enter the NETWORK menu to join a Wi-Fi
network and view network settings.
>INSTALL Enter the INSTALL menu to view install code
and register the thermostat.
>INFO Enter the INFO menu to view thermostat date
and time, and rmware versions.

18
Settings Menu
Menu Item Choices Description
BRIGHTNESS LOW
MEDIUM
HIGH
Adjust the brightness level of the
display.
BACKLIGHT OFF
ON
When ON, the display dims after 30
seconds of inactivity. Otherwise the
display turns off after 30 seconds.
SOUND OFF
LOW
MEDIUM
HIGH
Adjust the volume level of sounds when
buttons are pressed.
DEG DISPLAY FAHRENHEIT
CELSIUS
Set the units shown on the display. This
does not change the units in the mobile
app.
CLOCK 12 HR
24 HR
Set the clock to use 12 hour time with
AM/PM, or a 24 hour time.