507739-01
10/2017
Supersedes 9/2017
iComfort® M30 Smart Thermostat
Installation and Setup Guide
Disponible en español en www.LennoxPros.com.
2
Tables of Contents
Shipping and Packing List ........................... 3
Thermostat .................................................... 3
Wall Plate Dimensions (H x W) ............................... 3
Compressor Short-Cycle Protection
(Compressor Protect) .............................................. 3
Installation Considerations ......................... 4
Outdoor Temperature Sensor Installation
(Optional) ....................................................... 5
Thermostat Installation ............................... 5
New Installation ....................................................... 5
Replacement Installation ......................................... 6
Common Installation Practices ................................ 6
Thermostat Terminal Information ............................ 8
System Wiring Diagrams ......................................... 9
Connecting Thermostat Wiring ................................ 9
Supported Congurations ....................................... 9
Install Thermostat to Backplate ............................. 12
Commissioning and Advanced Settings .. 12
Commissioning ...................................................... 12
Advanced Settings ................................................ 15
Advanced Settings Parameter Descriptions .......... 18
Stage Control .............................................. 22
Wi-Fi Connection ........................................ 27
Connecting to Visible Home Wi-Fi Access Point ... 28
Connecting to Hidden Home Wi-Fi Access Point .. 28
Wireless Terminology ............................................ 29
Wireless Connectivity Troubleshooting Tips ... 29
Determining Wireless Connection Signal
Strength ................................................................. 29
Alert Codes ................................................. 30
System Test Modes .................................... 33
Save Energy Default ................................... 33
Dehumidication Control ........................... 34
Normal and Max .................................................... 34
Humiditrol ............................................................. 35
Auxiliary Dehumidier ........................................... 36
Humidication Control ............................... 36
Normal and Max .................................................... 37
Normal and Max Dew Point Control ...................... 37
Installer Checklist ....................................... 39
Index ............................................................ 40
3
WARNING
This product contains a chemical known to the
State of California to cause cancer, birth defects,
or other reproductive harm.
Shipping and Packing List
Item Quantity
M30 Thermostat with backplate attached 1
Wall plate 1
Mounting screws (M3.5x25mm self-tapping screws) 2
Wall anchors 2
Warranty sheet 1
Installation & setup guide 1
User guide 1
System Wiring Diagrams Fold-Out Sheet 1
Thermostat
Unit Dimensions (H x W x D)
Dimensions: 3-5/16 x 4-5/16 x 7/8 in. (84 x 110 x
22mm)
Wall Plate Dimensions (H x W)
Dimensions: 4-1/2” x 5-3/4” (114 x 146mm)
ComPressor sHort-CyCle ProteCtion
(ComPressor ProteCt)
This thermostat is equipped with automatic
compressor protection to prevent potential damage
due to short cycling or extended power outages.
The non-adjustable short-cycle protection provides
a 5-minute delay between heating or cooling cycles
to prevent the compressor from being damaged.
NOTE: There is an option in advanced settings that
will allow this safety feature to be disabled.
By default it is set to ON. Short Cycle
protection is disabled during testing of the
outdoor unit. It is automatically reset once
the test is completed.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
personal injury or loss of life.
Installation and service must be performed
by a li censed professional HVAC installer (or
equivalent) or a service agency.
4
IMPORTANT
In all applications, the M30 thermostat can only
be used with all residential units and approved
commercial split-system matches, and those
which meet the following installation criteria:
Installation uses 18 gauge thermostat wire or
larger and wire run length DOES NOT EXCEED
300 feet (91 meters).
Load from any thermostat connection is 1 AMP
or less.
WARNING
Always turn off power at the main power source by
switching the circuit breaker to the OFF position
before installing or removing this thermostat.
All wiring must conform to local and national
building and electrical codes and ordinances.
CAUTION
This is a 24VAC low-voltage thermostat. Do not
install on voltages higher than 30VAC.
Do not short (jumper) across terminals on the gas
valve or at the system control to test installation.
This will damage the thermostat and void the
warranty.
Installation Considerations
Before beginning installation, note the type of
equipment, number of stages, and any accessories
being installed. This thermostat is a 24VAC lowvoltage thermostat and requires a common wire to
the thermostat to operate.
• Shut off all power to system components before
installing thermostat.
• Make sure that all wiring conforms to local
and national building and electrical codes and
ordinances.
• Never short (jumper) across terminals on the gas
valve or at the system control to test installation.
This will damage the thermostat and void the
warranty.
• Never install thermostat on outside walls or in
direct sunlight.
5
Outdoor Temperature Sensor
Installation (Optional)
Install the optional (purchase separately) outdoor
sensor (X2658) on a northern wall of the home,
away from direct sunlight or other heat sources that
may affect its sensitivity.
The sensor is required for:
• Outdoor temperature displays on the home
screen if enabled
• Balance point adjustment and control. The sensor
enables optimal heating equipment operation via
programmable balance points.
• Dew point humidity control
• Humiditrol EDA operation (required)
• Requires 22AWG thermostat wire or larger and
not to exceed 300 feet (91 meters) maximum run.
• Connects to To and Tc terminals on thermostat
Connect outdoor sensor to terminals Tc and To on
thermostat.
NOTE: If alert code 108 appears on the screen,
check your wiring connections to terminals
To and Tc on the thermostat. Check
resistances using the resistance table
provided in the outdoor sensor instruction.
Thermostat Installation
neW installation
The following procedure is for new installation or
installing the M30 to a new location in an existing
home.
1. Unpacked the thermostat and open the case
with a thin-blade screwdriver. Place between
wall base and unit and twist to separate unit
from base.
2. Select a location for the thermostat about 5
feet (1.5 meters) above the oor in an area with
good air circulation at average temperature.
3. Do not install the thermostat where it can be
affected by:
• Drafts or dead spots behind doors and in
corners.
• Building entrances or automatic doors
• Heat generating equipment such as kitchen
equipment
• Enclose environment unless a remote indoor
sensor is used.
• Hot or cold air from ducts.
• Radiant heat from sun or appliances.
• Concealed pipes and chimneys.
• Non-heated (non-cooled) areas such as an
outside wall behind the thermostat.
6
4. Run thermostat wiring from indoor unit to
location where thermostat will be installed.
5. Drill or make opening through wall for thermostat
wiring 3/4” x 3/4” (19mm x 19mm).
6. Pull about 3 inches (76mm) of thermostat
wire through the opening and removed outer
thermostat wire jacket. This will help in routing
the thermostat wiring to the proper thermostat
terminals.
NOTE: Thermostat wires and outdoor sensor wire
can be run in the same bundle of wires if
needed.
7. Seal the hole in the wall with a suitable material
to prevent drafts from entering the thermostat
case. Not doing so could affect the thermostat’s
internal temperature sensor.
8. Trim 1/4 inch (6 mm) insulation from end of
each thermostat wire lead.
1/4”
rePlaCement installation
Use the following two steps to replace an existing
thermostat.
1. Remove existing thermostat.
2. Note the wire colors and what terminals they are
connected for future reference.
Common installation PraCtiCes
1. Use the provided wall plate as a template on
where to drill the mounting holes.
NOTE: Installation of wall plate is optional. Use
a eld-provided level to allow for proper
alignment.
(Use a level) Align Wall Plate
Use unit wall plate as template to mark desired
mounting nhole locations on wall.
7
2. Drill 3/16” (5 mm) holes in wall for provided
wall anchors. Insert provided wall anchors into
drilled holes.
3. Remove back plate from main thermostat
assembly using a at-head screw driver.
4. Route thermostat and outdoor temperature
sensor (optional) wiring from wall through
center openings on wall plate (use is optional)
and back plate.
Wall Plate (optional)
Thermostat
Back Plate
Run thermostat wire
through openings
5. Secure back plate and wall plate (optional) to
wall with the two provided mounting screws.
Wall Plate (optional)
Thermostat
Back Plate
Screw
8
tHermostat terminal information
Table 1. Terminal Designations
Terminal Purpose
Tc and To
Used for connection to an optional outdoor temperature sensor.
ACC1 and
ACC2
Default factory software setting for ACC (Accessory)
is off.
Terminal function setting can be changed by going to
settings > advanced settings > terminal settings.
Available settings are off, humidify and dehumidify.
Connect accessory to terminal ACC2 and change
software setting to the applicable type of accessory.
Power is supplied by R2 to ACC1 factory jumper.
NOTE: Do not remove the factory installed
jumper between ACC1 and R2 terminals
unless a secondary 24VAC power
source is connected to ACC1.
R2
This is the secondary 24VAC power source for ACC
(Accessory). The R2 terminal is connected to the
ACC1 terminal by factory provided jumper.
D/H
This terminal is for an optional dehumidier or humidier.
Factory default software setting is for dehumidify.
Terminal settings can be changed by going to set-
tings > advanced settings > terminal settings.
Available settings are off, humidify and dehumidify.
NOTE: The user interface refers to the terminal
as H/D.
W2
Second-stage heating (non-heat pump) or 4th stage
(heat pump).
Y2 Second-stage heating or cooling.
Table 1. Terminal Designations
Terminal Purpose
O/B
Heat pump reversing valve operations. When O (default) is selected under settings > advanced set-
tings > terminal settings, the relay is ON during
cooling and OFF during heating.
When B is selected, the relay is ON during heating
and OFF during cooling.
C Common 24VAC
G Fan relay
W1
First-stage heating (non-heat pump or emergency
heat) or third-stage heating (heat pump)
Y1 First-stage heating or cooling
R 24VAC power
Table 2. O/B Terminal Relationship States
State O/B Terminal Control
Power ON
O terminal : ON (If O terminal selected)
B terminal : OFF (If B terminal selected
Heat only or
emergency
heat mode
O terminal : always OFF
B terminal : always ON
Cool mode
only
O terminal : always ON
B terminal : always OFF
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Table 2. O/B Terminal Relationship States
State O/B Terminal Control
Heat/Cool
mode
During heating
O terminal : OFF
B terminal : ON
During cooling
O terminal : ON
B terminal : OFF
No Demand
The terminal continues the previous ON / OFF
state
Off mode
The terminal state continues the state before entering off mode
system Wiring Diagrams
For system diagrams, see the included fold-out
iComfort® M30 Smart Thermostat System
Diagrams sheet.
ConneCting tHermostat Wiring
Use “Table 1. Terminal Designations” on page 8
for connecting the thermostat wiring to the back
plate terminals.
If this is a replacement thermostat, connect
to terminals as noted when removing the old
thermostat. If terminals were different on old
thermostat, use “Table 1. Terminal Designations” on
page 8 and wiring diagrams provided in the kit.
NOTE: Remember to seal the hole in the wall with
a suitable material to prevent drafts from
entering the thermostat case. Not doing
so could affect the thermostat’s internal
temperature sensor.
sUPPorteD ConfigUrations
See “Table 3. Supported Congurations” on page
10.
10
Table 3. Supported Congurations
Outdoor unit
setting
Indoor unit
setting
Comp. Stages
Indoor Heat
Stages
Heat Stages
Cool Stages
Heat Stage
EM Heat
Stage
Cool Stage
1st
2nd
3rd
4th
1st
2nd
1st
2nd
HP
No Heat
1 0 1 1 Y1 - - - - - Y1 -
2 0 2 2 Y1 Y1+Y2 - - - - Y1 Y1+Y2
Gas / Oil
1 1 2 1 Y1 W1 - - W1 - Y1 -
1 2 3 1 Y1 W1 W1+W2 - W1 W1+W2 Y1 -
2 1 3 2 Y1 Y1+Y2 W1 - W1 - Y1 Y1+Y2
2 2 4 2 Y1 Y1+Y2 W1 W1+ W2 W1 W1+W2 Y1 Y1+Y2
Elec
1 1 2 1 Y1 Y1+W1 - - W1 - Y1 -
1 2 3 1 Y1 Y1+W1 Y1+W1+W2 - W1 W1+W2 Y1 -
2 1 3 2 Y1 Y1+Y2 Y1+Y2+W1 - W1 - Y1 Y1+Y2
2 2 4 2 Y1 Y1+Y2 Y1+Y2+W1 Y1+Y2+W1 +W2 W1 W1+W2 Y1 Y1+Y2
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Table 3. Supported Congurations
Outdoor unit
setting
Indoor unit
setting
Comp. Stages
Indoor Heat
Stages
Heat Stages
Cool Stages
Heat Stage
EM Heat
Stage
Cool Stage
1st
2nd
3rd
4th
1st
2nd
1st
2nd
A/C
No Heat
1 0 - 1 - - - - - - Y1 -
2 0 - 2 - - - - - - Y1 Y1+Y2
Gas /
Oil or
Elect
1 1 1 1 W1 - - - - - Y1 -
1 2 2 1 W1 W1+W2 - - - - Y1 -
2 1 1 2 W1 - - - - - Y1 Y1+Y2
2 2 2 2 W1 W1+W2 - - - - Y1 Y1+Y2
No OU
Gas /
Oil or
Elect
0 1 1 0 W1 - - - - - - -
0 2 2 0 W1 W1+W2 - - - - - -
OU = Outdoor Unit
Elect = Electrical Heat
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install tHermostat to BaCkPlate
The thermostat assembly simply snaps onto the
back plate. Once secure to the back plate apply
power to the system. Thermostat should boot up
and go into the commissioning process.
Figure 1. Installing Thermostat
If power is applied and the thermostat screen
remains off, inspect and verify all wire connections.
Commissioning and Advanced Settings
After power is applied to the thermostat for the rst
time it displays the Lennox® “splash screen”.
The Installer is then presented with the several
Setup Screens to congure the system prior to
operation.
Commissioning
“Table 4. Commissioning Screens” on page 13
list all of the screens and parameters that can be
congured during the commissioning phase.
13
Table 4. Commissioning Screens
MENU SETTING (default is bold) Notes:
DEALER INFO
Dealer ID Number Enter id
Installer can add the dealer number
and phone number using the keyboard tool.
Dealer Phone Number Enter phone
Name, email, website, dealer address (address1, address2, city, state and zip/postal code
GENERAL
Language
English
Français
Español
Country/Region
United States
Canada
Australia
GENERAL Date and Time
Time
Adjust the date and time using the
set date and set time tools.
Date
Time Zone\
Atlantic
Eastern
Central
Mountain
Pacic
Alaska
Hawaii
Samoa
Chamorro (Guam)
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Table 4. Commissioning Screens
MENU SETTING (default is bold) Notes:
GENERAL Date and Time
Daylight Savings On or Off
Temperature Units °F or °C
TERMINAL SETTINGS (See Terminal Settings on page 17)
SYSTEM SETUP (See System Setup on page 15)
OUTDOOR SENSOR (See Outdoor Sensor on page 16)
HUMIDITY Humidity Control
Off
Dehumidify
NOTIFICATIONS
(Reminders)
Replace Filter 1 Disabled
Adjustable 3, 6, 12, 24 months or
custom date, can be set to calendar
time or run-time.
Touch custom to access the Set
date Tool screen to input custom
date settings.
Replace Filter 2 Disabled
Replace UV Bulb Disabled
Replace Humidier Pad Disabled
PureAir Maintenance Disabled
Maintenance Reminder Disabled
15
aDvanCeD settings
“Table 5. Advanced Settings” on page 15 list the menu options and parameters that can be set under the
Advance Settings menu option.
Table 5. Advanced Settings
MENU SETTING (default is bold) Notes:
SYSTEM
SETUP
Outdoor Unit
Type
Not Installed
1 Stage A/C Unit
2 Stage A/C Unit
1 Stage HP Unit
2 Stage HP Unit
Outdoor Unit Capacity - 36 kBtu Adjustable 18 to 60 kBu
Outdoor Unit 1st Stage Capac (capacity)
Adjustable 30 to 100%
(This setting is only available if outdoor unit is
2-stage.)
Indoor Unit
Type
Not Installed
1 Stage Electric
2 Stage Electric
1 Stage Oil
2 Stage Oil
1 Stage Gas
2 Stage Gas
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Table 5. Advanced Settings
MENU SETTING (default is bold) Notes:
SYSTEM SETUP
Humidier
Not Installed
These options only appear under System
Setup if the H/D and ACC terminals have been
enabled for the specic type of accessory.
Go to Terminal Settings to enabled attached
accessory for the specic terminal being used.
Humidication
Dehumidier
Not Installed
Humiditrol - Min
Humiditrol - Mid
Humiditrol - Max
Auxiliary Dehumidier
OUTDOOR SENSOR Yes or No
Required for high and low balance points
option.
RESIDUAL COOL 0, 30, 60, 90, 120 seconds, -300 (5 min delayed)
BALANCE POINT Disabled or Enabled
When enabled:
Low Balance Point: 25°F (-20 to 72°F)
High Balance Point: 50°F
(-17 to 75°F)
TEMPERATURE CONTROL MODE Normal and Comfort
WALL INSULATION Poor, Average and Good
DEADBAND 3°F Adjustable (3 to 8°F)
SMOOTH SETBACK RECOVERY Enabled or Disabled
OFFSET
Temperature Offset - 0°F Adjustable (-5 to 5°F)
Humidity Offset - 0% Adjustable (-10 to 10%)
17
Table 5. Advanced Settings
MENU SETTING (default is bold) Notes:
STAGE DIFFERENTIAL
Stage 1 - 1.0°F Adjustable (0.5 to 8.0°F)
Stage 2 - 1.0°F Adjustable (0.5 to 8.0°F)
Stage 3 - 0.5°F Adjustable (0.5 to 8.0°F)
Stage 4 - 0.5°F Adjustable (0.5 to 8.0°F)
STAGE DELAY
On or Off
Stage 2 through 4 - 20 min. Adjustable (5 to 120 minutes)
H/C STAGES LOCKED IN Enable or Disable Turns heating stages off separately
STAGE 2 HP LOCK TEMP Off, 40°F, 45°F, 50°F, 55°F
Heat Pump - for dual-fuel applications (locks
out 2nd stage compressor)
COMPRESSOR PROTECT On or Off
DISPLAY PERFORMANCE REPORT On or Off
TERMINAL SETTINGS
H/D
Off
Humidify
Dehumidify
ACC
Off
Humidify
Dehumidify
Ventilation (future use) Not selectable at this time.
O/B
O (energized during cooling)
B (energized during heating)
SYSTEM TEST MODE Conrm Button
Installer run tests to check all output relays.
Tests conrm signals between thermostat/unit
are being sent/received. Stops system to run
system tests
18
Table 5. Advanced Settings
MENU SETTING (default is bold) Notes:
RESET SETTING Conrm Button Resets all parameters to factory settings
RESTART Conrm Button Reboot the thermostat.
aDvanCeD settings Parameter DesCriPtions
Table 6. Parameter Descriptions
Parameter Name Denition
Smooth Setback
Recovery (SSR)
SSR is an algorithm designed to smoothly” reach a occupied program schedule setpoint. The algorithm looks 2
hours ahead for the occupied program schedule period’s setpoint. If the occupied setpoint requires the system
to turn on (present temperature below the heat setpoint or above the cool setpoint), then SSR will calculate a
new setpoint. Once initiated, SSR monitors the change in room temperature and calculates a new setpoint every 30 seconds. Then SSR provides this new setpoint for the heating and cooling algorithms; the new setpoint
will be displayed on the User Interface.
SSR Rules:
• SSR is enabled when both Smooth Setback Recovery” is set to enabled
(default) and the program schedule is turned on.
• SSR does NOT turn off stage delay timers.
• SSR will NOT change the dead band between heating and cooling modes.
• SSR will not overshoot the target set point.
• SSR will reset if the user updates the program schedule during the active
SSR period. Smooth Setback Recovery - default is enabled .
NOTE: SSR aims to bring the sensor temperature (room temperature) to the value of the next active set
point at the exact time the next active set point is associated with. This means that conditioning to
reach the next active set point starts before the currently active set point period expires.
Offset
This is a feature that lets you adjust the room temperature reading +/- 5°F. This helps if your thermostat is in a
slightly warm or cold spot, or if the room temperature does not match your old thermostat.
The other option setting in our thermostat is humidity offset which is basically the same as temperature, but
works on a humidity percentage instead.
19
Table 6. Parameter Descriptions
Parameter Name Denition
Stage Differential
There are four options for stage differential:
• 1st Stage Differential: The default is 1.0°F. The rst stage differential is the difference between
the equipment activation and deactivation temperatures. The rst stage differential is used
in all models. It can be programmed between 0.5 and 8.0°F in 0.5°F steps.
• 2nd Stage Differential: The default is determined by the system setup. The second stage differential is
used in the multi-stage model only. The second stage differential is the difference in temperature between
the second stage activation and the rst stage activation. It can be programmed between 0.5 and 8.0°F
in 0.5°F steps. If system has only 1st stage equipment, this item is hidden from installer screen.
• 3rd Stage Differential: This setting is used with the multi-stage model, in heat pump
applications only. The default is determined by the system setup. The third stage differential
is the difference in temperature between the third stage activation and the second stage
activation. It can be programmed between 0.5 and 8.0°F in 0.5°F steps. If system has no
more than three stages equipment, this item is hidden from installer screen.
• 4th Stage Differential: This setting is used with the multi-stage model, in heat pump
applications only. The default is determined by the system setup. The fourth stage differential
is the difference in temperature between the fourth stage activation and the third stage
activation. It can be programmed between 0.5 and 8.0°F in 0.5°F steps. If system does
not have fourth stage equipment, this item is hidden from installer screen.
20
Table 6. Parameter Descriptions
Parameter Name Denition
Stage Delays
There are four settings for this option:
• Stage Delay Timer: The user shall be able to select ON (default) or OFF for stage delay timers.
When OFF is selected all STG DELAYS timers (STG 2 DELAY, STG 3 DELAY, STG 4 DELAY) are
disabled. This means that the stages are changed based on the temperature and not the timer
delays. When ON is selected all STG DELAYS timers are enabled and set to their default values
(20min). If system has only rst stage equipment, this item is hidden from installer screen.
• 2nd Stage Delays: The Stage Delay option is enabled when ON is selected from STG Delay
Timers. The second stage delay is used in the multi-stage model only. The default is 20
minutes. If the rst stage fails to advance the ambient temperature toward the setpoint by
1.0°F during each consecutive programmed time delay, then the second stage is activated
until demand is satised. It can be programmed from 5 to 120 minutes in 5-minute steps. If
system has only rst stage equipment, this item is hidden from installer screen.
• 3rd Stage Delays: The Stage Delay option is enabled when ON is selected from STG Delay
Timers. This setting is used with the multi-stage model, in heat pump applications only. The default
is 20 minutes. If the second stage fails to advance the ambient temperature toward the setpoint
by 1.0°F during each consecutive programmed time delay, then the third stage is activated
until demand is satised. It can be programmed from 5 to 120 minutes in 5-minute steps. If the
system has no more than three stages, this item is hidden from the installer screen.
• 4th Stage Delays: The Stage Delay option is enabled when ON is selected from STG Delay Timers.
This setting is used with the multistage model, in heat pump applications only. The default is 20 minutes.
If the third stage fails to advance the ambient temperature toward the set point by 1.0°F during each
consecutive programmed time delay, then the fourth stage is activated until demand is satised. It can
be programmed from 5 to 120 minutes in 5-minute increments. If the system does not have a fourth
stage, this item is hidden from installer screen. If temperature is stuck at a value lower than the set
point and multiple stages have been turned on because of the delay timers expired (not because of the
temperature), all these stages shall stay on until the required temperature (set point + 0.5) is reached.
H/C STGS Locked In
The user shall be able to select disable or enable for H/C STGS LOCKED IN mode. In disable, mode different
stages of heat or cool are turned off separately. In enable mode, different stages of heat or cool are turned
off together.
Stage 2 HP Lock Temp
The User shall be able to select the STG 2 HP lock temp from 40F, 45F, 50F, 55F or OFF. The value is used
in dual fuel algorithm to lock the second stage of compressor .The default is OFF which means it is disabled
and is not used in dual fuel algorithm. If system has only 1st stage equipment, this item is hidden from installer
screen. For more information see “Stage 2 HP Lock Temp” on page 28.
21
Table 6. Parameter Descriptions
Parameter Name Denition
Feels Like
This feature will display the home temperature based on a combination of inputs. Feels Like uses outdoor
temperature, indoor temperature, and indoor humidity to determine the “feels like” condition of the home.
Wider Set Point Range
By default your thermostat operates within a range of 60-90°F. Enabling this options changes the range to
44-99°F.
Heating Mode: Normal
or Comfort
Options are Normal and Comfort. Default is Normal. When changing to Comfort Mode, several parameters
are automatically modied for optimal system operations. The changed parameters are listed on the screen
when set to Comfort.
• Normal - This setting cools the home to the desired temperature setting. Once second-stage is activated
by timer or differential, it will not stage down to rst-stage until the next heating cycle demand.
• Comfort - This is when the system could automatically stage up
or down based on the current load demand.
Smart Away
This setting when enabled controls the temperature in the home when no one is home. For this to function, the
Lennox Mobile app needs to be installed on a mobile device.
Low Balance Point
(Multistage Heat Pump Model only) -The default is 25°F. This option will only be available if an outdoor sensor
is installed. If the outside temperature is below the programmed Low Balance Point, then the compressor
stage operation is disallowed. This protects the compressor from operation and damage in cold outdoor temperatures. Also, if the heat pump is not effective at a low outdoor temperature, then it is more comfortable and
efcient to go directly to the second stage. Low Balance Point can be disable in this screen. When this is
enable, the options are from –40°F to (the High Balance Point temperature -2) in 1.0°F steps.
High Balance Point
The default is 50°F. This option is only available if an outdoor sensor is installed. If the outside temperature is
above the High Balance point, then the auxiliary heat stage is disallowed. This prevents the more expensive
auxiliary heat stage from operating, and forces the more efcient heat pump to satisfy the demand. High
Balance Point can be disable in this screen. When this is enable, the high balance point range is from (the low
balance point + 2) up to 75°F.
Deadband
The deadband setting is the minimum difference between the cooling and heating setpoints. This setting is
used in auto-changeover to ensure smooth equipment operation. It also allows for exibility of Humiditrol operation. The default deadband is 3 and the deadband is adjustable from 3 to 9°F degrees.
22
Table 6. Parameter Descriptions
Parameter Name Denition
Offset
There are two options for offset which are:
• Temperature offset can be used to offset the displayed space temperature by up to +/- 5 degrees.
The default temperature offset is zero. This offset also applies to the control temperature.
• Humidity offset can be used to offset the displayed room humidity
by up to +/- 10%, the default offset is 0.
Stage Control
• The following gures list typical congurations.
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
POINTS:
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +1.5SP +1.0 0.2+ PS5.0+ PS
Stg1 Differential
Stg2 Differential
Stg2 Differential
Stg1 Differential
Figure 2. Cooling - 1 or 2 stages
23
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
1st stage
ON
2nd stage
ON
1st stage
ON
2nd stage
ON
2nd stage
OFF
1st stage
OFF
1st stage
OFF
2nd stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
Stg2 Differential
SP -2.5SP -3.0
Stg1 Differential
Stg2 Differential
POINTS:
Figure 3. Heating - Non-Heat Pump or Heat Pump w/o backup heat - 1 or 2 stages
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
POINTS:
3rd stage
ON
1st stage
ON
2nd stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
2nd stage
OFF
3rd stage
OFF
1st stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
SP -1.5SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Figure 4. Heating - Heat Pump w/electric - 3 stage (2 compressor / 1 backup OR 1 compressor / 2 backup)
24
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
2nd stage
OFF
3rd stage
OFF
4th stage
OFF
1st stage
OFF
Stg4 Differential
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
4th stage
OFF
POINTS:
SP -1.5 SP -1.0 SP -0.5 SP SP +0.5SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Stg4 Differential
Figure 5. Heating - Heat Pump w/electric - 4 stage (2 compressor / 2 backup)
H/C
Stages
Locked =
NO or
YES
2nd stage
ON
1st stage
ON
2nd stage
OFF
1st stage
OFF
SP -1.5 SP -1.0SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
SP -2.5SP -3.0
Stg2 Differential
POINTS:
Figure 6. Heating - dual fuel - 2 stage (1 compressor / 1 backup)
25
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
POINTS:
3rd stage
ON
1st stage
ON
2nd stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
2nd stage
OFF
3rd stage
OFF
1st stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Diff.
Stg2 Differential
Figure 7. Heating - dual fuel - 3 stage (1 compressor / 2 backup)
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
POINTS:
3rd stage
ON
1st stage
ON
2nd stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
2nd stage
OFF
3rd stage
OFF
1st stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Figure 8. Heating - dual fuel - 3 stage (2 compressor / 1 backup)
26
Stg4 Diff.
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
2nd stage
OFF
3rd stage
OFF
4th stage
OFF
1st stage
OFF
Stg4 Differential
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
4th stage
OFF
POINTS:
SP -1.5SP -1.0SP -0.5 SP SP +0.5SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Figure 9. Heating - dual fuel - 4 stage (2 compressor / 2 backup)
27
Wi-Fi Connection
Wireless networks supported by this system are:
• 802.11b is 2.4Ghz band (max 11 Mbit/s)
• 802.11g is 2.4Ghz band (max 54 Mbit/s)
• 802.11n is 2.4Ghz band (max 130 Mbit/s)
This is for connecting the thermostat to a secure
home wireless network.
NOTE: A router with Bonjour capabilities is required
for this function. Check the router functions
if the thermostat does not connect. Apple
Bonjour® is an implementation of zero-
conguration networking (Zeroconf), a
group of technologies that includes service
discovery, address assignment, and host
name resolution.
NOTE: Never use a home guest account and
never use an open router connection (nonsecure).
NOTE: Always use a secure connection physically
located in the home where the thermostat
is located.
NOTE: If thermostat will not connect to the home
router, then try using a hot spot to check
thermostat Wi-Fi connectivity. A Wi-Fi
extender may be required or move the
router closer to thermostat for connection.
1. Touch the Menu icon in the upper right-hand
corner of the display.
2. Touch the settings option on the menu.
28
3. If Wi-Fi is set to disabled, touch the > icon to
enabled. The Wi-Fi screen will appear where
you can toggle it to ON.
ConneCting to visiBle Home Wi-fi aCCess Point
1. Touch Wi-Fi network. This will display a list
of visible Wi-Fi networks within range of the
thermostat.
2. Select the homeowner network and type in the
password. Touch join to continue.
NOTE: The thermostat can connect to a home
wireless router that uses up to 32 characters
in the access point name (visible or hidden).
NOTE: If you wish to see the characters you
are typing, check show password. The
thermostat will support up to a 63 character
password. The password cannot contain the
% or # symbols.
3. If joining the network was successful, the access
point name will appear next to Wi-Fi networks.
ConneCting to HiDDen Home Wi-fi aCCess Point
1. Touch Wi-Fi network. Scroll down to others.
2. Enter new network information. You will need
the name of the access point and the type of
security being used. Select Security. Options
are: none, WEP, WPA and WPA2. If your home
Wi-Fi connection is unsecured, then Wi-FI
security must be enabled using WEP, WPA or
WPA2 via the router before proceeding. Consult
your router documentation on how to enable WiFi security.
3. Enter the password.
4. Touch join to complete.
5. If joining the hidden network was successful,
the access point name will appear next to wi-
networks.
Whether connecting to a visible or hidden network,
if successful, a check mark will appear above both
the router and Internet icons.
HOME WI-FI
ROUTER
INTERNET
ACCESS
SERVER
CONNECTION
M30
THERMOSTAT
29
Wireless terminology
The following terminology is used:
• Received Signal Strength Indication (RSSI). This
indicates the signal strength of the Wi-Fi router
being received by the scanning device (i.e.,
smart phone). So the higher the RSSI number (or
less negative in some devices), the stronger the
signal.
• Internet Protocol Address (IP address). This is
an address assigned by your home router for
each network device (e.g., computer, printer,
thermostat).
Wireless ConneCtivity troUBlesHooting tiPs
Locate the thermostat and router away from other
devices that could possibility interfere with wireless
communications. Some examples of other devices
that could interfere are:
• Microwave ovens
• Wireless cameras
• Portable phones and bases
• Baby monitors
• Wireless speakers
• Bluetooth devices
• Garage door openers
• Neighbor’s wireless devices
To eliminate a possible source of interference,
temporally disable any nearby 2.4Ghz band devices
in the home and see if Wi-Fi performance has
improved.
Determining Wireless ConneCtion signal strengtH
The ideal signal strength range for the thermostat
is -1 to -69 Received Signal Strength Indication
(RSSI). The signal strength can be viewed from the
thermostat interface.
1. Press NETWORK SETTINGS; This screen
shows a graphical view of buttons representing
OPEN and SECURE wireless networks, along
with button for adding a network.
2. Select the access point that has already been
established and connected.
3. When selecting the info icon, a screen will
appear which will display an option to forget
the network and IP address assigned to the
thermostat by your router, sub-net mask, router,
DNS and RSSI.
4. If the RSSI signal strength is anywhere between
-9 to -69, then the signal strength is sufcient.
If outside this range, then either relocate the
router closer to the thermostat, add a repeater,
or move the thermostat. Adjusting antenna on
router may resolve the issue.
Home Network ........................
IP address 192.168.1.4
subnet mask 255.255.255.0
router
DNS
MAC address
i
forget this network
192.168.1.1
192.168.1.1
00:23:a7:b7:a1:70
30
Alert Codes
Table 7. Alert Codes and Reminders
Alert
Code
Priority
Condition
Display Message Condition System Action Clear/Recovery
18 Minor
Low Ambient HP
Heat Lockout
The outside temperature is
below the level where the
heat pump is programmed
to heat the home.
When the thermostat is in heat
mode and a heat demand
exists, if the temperature
measured by outdoor sensor
is below the low balance point,
the heat pump is turned off and
only the electric heat or gas/oil
heat is used.
NOTE: This alert message
is not displayed.
If the temperature
measured by outdoor
sensor is rises above low
the balance point, then any
available heat source (heat
pump, electric heat or gas/
oil heat) can be used.
19 Minor
High Ambient
Auxiliary Heat
Lockout
The outside temperature is
higher than the level where
the furnace or electric heat
is programmed to work.
When the thermostat is in heat
mode and a heat demand
exists, if the temperature
measured by outdoor sensor is
above the high balance point,
the electric heat or gas/oil heat
is turned off and only the heat
pump is used.
NOTE: This alert message
is not displayed.
If the temperature
measured by outdoor
sensor drops below the
high balance point, then
any available heat source
(heat pump, electric heat
or gas/oil heat) can be
used.
29 Critical
Over Temperature
Protection
Indoor temperature that is
higher than 99ºF.
• All stages of heat and cool
are turned off by safety relay.
• Heating and cooling
operation is not allowed.
• This error is displayed in
notication screen.
If room temperature goes
less then 99°F, it will start
working again.
30 Moderate
Low Temperature
Protection
Indoor temperature that is
lower than 40ºF.
If room temperature goes
more then 40°F, it will start
working again.
31
Table 7. Alert Codes and Reminders
Alert
Code
Priority
Condition
Display Message Condition System Action Clear/Recovery
180 Critical
Outdoor Temperature
Sensor Problem
Outdoor sensor reads out
of range (-50ºF to 180ºF)
• Operation will be performed.
(Weather information
is not used)
• Thermostat will stop the
operation that requires
outdoor temperature
information (i.e. balance
point control and 2nd
stage lock-in).
• Thermostat will switch the
control to the operation that
does not require outdoor
temperature information.
• This error is displayed in
notication screen.
If the outdoor sensor reads
a value not within its normal
range then replace sensor.
610 Critical
Low Room
Temperature
Detected
The the freeze protection
temperature range is 30ºF
to 50ºF and with default
of 40ºF.
• This alert message is
displayed when safety
protection is enabled.
• If the room temperature
drops below the setting
range, an alert will
be displayed.
(System will raise alert only)
The system automatically
clears the alert message
when the temperature rises
above the freeze protection
temperature.
611 Critical
High Room
Temperature
Detected
The heat protection
temperature range is 80ºF
to 100ºF with a default
of 90ºF.
• This alert message is
displayed when safety
protection is enabled.
• If the room temperature rises
above the setting range, an
alert will be displayed.
(System will raise alert only)
The system clears the
alert message when
the temperature goes
below the heat protection
temperature.
32
Table 7. Alert Codes and Reminders
Alert
Code
Priority
Condition
Display Message Condition System Action Clear/Recovery
700 Critical
Internal Temperature
Sensor Problem
Local temperature sensor
reads out of range -4ºF
to 158ºF.
There is a difference
between main thermistor
and sub-thermistor of
more than 5ºF.
• Indoor temp is displayed as
“–“ on the home screen. This
will STOP all temperature
related operation.
• All stages of heat and
cool are turned off by
safety relay.
• This error is displayed in
notication screen.
Thermostat will have to
be replace or if sensor
returns to with in the normal
operating range (0ºF to
113ºF), the error message
will be automatically
cleared. System will return
to normal operations.
703 Critical
Comfort Sensor
Humid Sensor
Problem
Sensor reads out of range
0% to 100%
• This message indicates
humidity sensor is not
functioning correctly.
• The humidity display
on the home screen will
indicated “–“.
• This error is displayed in
notication screen.
Thermostat will have to
be replace or if sensor
returns to with in the
normal operating range,
the error message will
be automatically cleared.
System will return to normal
operations.
3000 Reminder Replace lter 1
Not Applicable Displayed in notication screen
Press the “back” button,
“clear” button or “remind
later” button.
3001 Reminder Replace lter 2
3002 Reminder
Replace humidier
pad
3003 Reminder Replace UV bulb
3004 Reminder
Maintenance
reminder
3005 Reminder
Pure Air
maintenance
33
System Test Modes
After the thermostat has been installed and setup, the installer may run a system test function
(accessed through the installer settings menu), to
test all cooling, heating, emergency heating stages
and FAN outputs.
Select system test mode. A pop-up will be
displayed indicating all equipment will be stopped.
Touch conrm to continue.
Pressing the OFF button next to the desired option
will change the status to ON and will enable the
relay for that terminal. Pressing again will turn OFF
the relay. Touch the left arrow (<) to exit the system
test mode.
Save Energy Default
Energy saving recommended set points for heating
and cooling can help save energy. The time and
temperatures reference in the following table are
pre-programmed into the thermostat to achieve
energy savings.
Scroll to ENERGY SAVING DEFAULT; touch to
select. Read the message on the screen and to
continue, touch CONFIRM.
Table 8. Energy Saving Set Points
Time Heating Cooling
Wake 70°F (21°C) 78°F (25°C)
Leave 62°F (17°C) 85°F (29°C)
Return 70°F (21°C) 78°F (25°C)
Sleep 62°F (17°C) 82°F (28°C)
NOTE: Humidication and dehumidication are not part of the
energy savings program. A higher utility bill may occur
when not using the setpoints in this table.
34
Dehumidication Control
normal anD max
Dehumidication options are listed at menu > settings > humidity. Under Humidity Control, select
dehumidify to enable dehumidication. By default it is disabled.
There are four setting options which are Normal, Max, Humiditrol* and Aux Dehumidier*.
* Requires hardware accessory
Slide bar adjust with a range of 40% to 60% RH.
Table 9. Dehumidication Modes
Option Description
Normal
• Activate: If RH measured is >= (RH set point + 2%), and, Cool is ON, then D is inactive
(open circuit), and G is ON (if not already ON), and Y2 (if available) is ON.
• Deactivate: If RH measured is <= (RH set point - 2%) or Cool is OFF, then D is active (24VAC
present). G returns to the state determined by the thermostat control, either ON, Auto, or CIRC. (OR)
If there is no more cool demand, then D is active (24VAC present). G returns to the state determined
by the thermostat control, either ON, Auto, or CIRC, and Y2 (if available) is OFF.
NOTE: Note that H is inactive (open circuit) during dehumidication.
Max
• Activate: IF RH measured is >= (RH set point + 2%), and if T measured >= T set point – 0°F to 4°F )AND
unit is in Cool mode (O = ON), then D is inactive (open circuit), and G, Y1, and Y2 (if available) are ON.
• Deactivate: IF RH measured is <= (RH set point - 2%), or if T measured < T set point 0°F to 4°F) or unit isn’t in Cool mode(B = ON), then D is active. Y1, Y2, are OFF and G returns
to the state determined by the thermostat control, either ON, Auto, or CIRC.
NOTE: H is inactive (open circuit) during dehumidication.
35
HUmiDitrol
This option is available if the Humiditrol accessory
is present and enabled in the Advanced Settings
> System Setup. Under Advanced Settings >
Terminal Settings, verify that the H/D or ACC
terminals are congured correctly for dehumidify
control. In this mode, the H/D terminal (if selected
for dehumidify) is always ON (24VAC) when
the outdoor temperature is greater than 95°F.
This prevents the system blower from running at
reduced speed if the outdoor temperature is greater
than 95°F.
NOTE: The outdoor temperature sensor MUST
be attached to the unit in order to use this
mode.
Equipment Operation with Humiditrol Enabled
IS THERE A COOLING
DEMAND?
START
NO
RUN EQUIPMENT IN
NORMAL COOLING
MODE
YES
IS THERE A HEATING
DEMAND?
RUN EQUIPMENT IN
NORMAL HEATING
MODE
YES
NO
IS THERE A
DEHUMIDIFICATION
DEMAND?
DEACTIVATE ALL
EQUIPMENT
NO
YES
IS HCA = MAX, AND
INDOOR TEMPERATURE > 2
o
F
ABOVE HEATING SETPOINT?
NO
DEACTIVATE ALL
EQUIPMENT
YES
RUN HUMIDITROL
Notes:
The Humiditrol Comfort Adjust (HCA) variable is user-selectable and can be set to MIN, MAX,or
MID
Humiditrol prohibited if outdoor temperature > 95
o
F OR if indoor temperature < 65oF
IS HCA = MIN, AND
INDOOR TEMPERATURE >
2
o
F BELOW COOLIING
SETPOINT?
IS HCA = MID, AND
INDOOR TEMPERATURE >
(HEATING
SETPOINT+COOLIING
SETPOINT)/2?
NO
NO
YES
YES
Figure 10. Equipment Operation with Humiditrol
Enabled
36
aUxiliary DeHUmiDifier
This option is available if the Auxiliary Dehumidier
accessory is present and enabled in the Advanced
Settings > System Setup. Under Advanced
Settings > Terminal Settings, verify that the
H/D or ACC terminals are congured correctly for
dehumidify control.
Cooling demand only: Y1 and Y2 come on
initiating the conventional cooling only demand.
Dehumidication demand only: D is deenergized (G should also be energized) but with
out Y1 or Y2. D remains off until the demand is
satised or if a true cooling demand comes on (unit
must be in cooling mode).
Both cooling and dehumidication demands:
Y1 and Y2 are ON (G must be ON and D is also
0 volts) When cooling is satised , D is still 0 volts
and G must stay ON until dehumidication demand
is satised.
Table 10. Auxiliary Dehumidier Option
Option Description
Normal
• Activate: If RH measured is >= (RH set
point + Activate: IF RH measured is >=
(RH set point + 2%), and AND unit is in
Cool mode (O = ON),, THEN D is inactive
(open circuit), AND G is ON.
• Deactivate: IF RH measured is <= (RH set
point - 2%), or unit isn’t in Cool mode(B
= ON), THEN D is active. G returns to
the state determined by the thermostat
control, either ON, Auto, or CIRC.
Humidication Control
This option is available if the humidier accessory
is present and enabled in the Advanced Settings
> System Setup.
Under Advanced Settings > Terminal Settings,
verify that the H/D or ACC terminals are congured
correctly for humidify control.
Humidication is provided only when both a
humidication accessory is installed and the
thermostat is in heat mode.
• Setpoint Range: 15 – 45% RH
• Relative Humidity Controlled to 2% of Setpoint
(1% resolution)
• “H/D” Terminal to Humidier (deactivated during
cooling)
• This behavior changes based on H/D terminal or
ACC terminal
37
normal anD max
The following table describes the function of normal
and max humidication settings.
Table 11. Humidication Modes
Option Description
Normal
(Humidication only with Heat Demand)
• Activate: If RH measured is <= (RH
setpoint - 2%), and, heat is ON, then H is
ON, and G is ON (if not already ON).
NOTE: In Normal humidication mode, thermostat
should not activate G when used with
Gas/Oil systems
• Deactivate: If RH measured is >= (RH set point
+ 2%) or Heat is OFF then H is Off. G returns to
the state determined by the thermostat control,
either ON, Auto, or CIRC. (OR) If there is no
more heat demand, then H is Off. G returns
to the state determined by the thermostat
control, either ON, Auto, or CIRC.
NOTE: The D terminal is active during
humidication.
Table 11. Humidication Modes
Option Description
Max
(Humidication with or without Heat Demand)
• Activate: IF RH measured is <= (RH set
point - 2%), and unit is in heat mode (regardless
of whether a heating demand exists), then H
is ON, and G is ON (if not already ON).
• Deactivate: IF RH measured is >= (RH set point
+ 2%) or unit is not in Heat mode (O = ON), then
H is Off. G returns to the state determined by the
thermostat control, either ON , Auto, or CIRC.
NOTE: The D terminal is active during
humidication. Following is the table that
shows status of FAN for different humidity
modes and system outputs.
normal anD max DeW Point Control
To set the system to Normal Dew Point Control,
select normal and dew point options under settings
humidity option.
To set the system for Max Dew Point Control, select
Max and Dew Point Control.
NOTE: Outdoor air temperature sensor is required
for this feature.
38
Table 12. Dew Point Control Modes
Option Description
Normal
Normal Dew Point Control mode is useful in colder
climates where moisture can collect on interior
window surfaces. Normal dew point control helps
to minimize this condensation. In this mode the
activation and deactivation of H/D terminal is
controlled as follows.
RH set point= .5*Outdoor Temp + 25 + RH user dew
point adjustment
where:
RH user dew point adjustment is user-selectable and
cannot exceed +/-15%, default RH user dew point
adjustment = 0
The RH set point cannot exceed 45%
The minimum RH set point is 15%
Max
Max Dew Point Control mode is also useful in colder
climates where moisture can collect on interior
window surfaces. Max Dew point control helps
to minimize this condensation. In this mode the
activation and deactivation of H terminal is controlled
as it is done in the Max.
RH set point= .5*Outdoor Temp + 25 + RH user dew
point adjustment
where:
RH user dew point adjustment is user-selectable and
cannot exceed +/-15%, default RH user dew point
adjustment = 0
The RH set point cannot exceed 45%
39
Installer Checklist
Table 13. Installation Checklist
Item Description Yes No
1 Is the thermostat properly mounted to either a wall stud or wall? (Do not mount on exterior wall or near any
ventilation outputs, doorways or location that could be directly exposed to sunlight)
2 Are all terminals wiring properly connected and tight?
3 When required, is the outdoor air temperature sensor (OATS) properly connected and isolated when used?
Is the input enabled using the user interface? Go to advanced settings > outdoor sensor and set
to YES if not done so already. Then go to settings > display and make sure the outdoor temperature
display setting is congured for sensor. If OATS is not used, leave the setting on Internet.
4 Have all the Thermostat Features been explained to the Home Owner?
5 Has User manual been given to Home Owner?
6 Has additional Alexa information not in user manual been given to Home Owner and shown where to nd
answers to additional questions?
Go to www.myicomfort.com Support page & FAQ.
7 Is the Wi-Fi connected?
8 Can the homeowner access the consumer portal (www.myicomfort.com) from either a PC or tablet?
9 Has the homeowner downloaded the Lennox Thermostat application from either Google Play or IOS App
Store to their mobile devices?
10 Is the Lennox Dealer account number or your main shop phone number been added to the dealer information
screen? This will tie the homeowners system to your LennoxPROS account.
11 If applicable, has the air handler’s electric heat strips been commissioned? If not, commissioning of heat
strips must be performed.
12 Has a complete system test been run? If not, from the HD Display home screen go to settings >
advanced settings > view dealer control center > and select tests.
40
Index
A
Advanced Settings 15
Alert Codes 30
Auxiliary Dehumidier 36
C
Commissioning 12
Common Practices 6
Compressor Short Cycle 3
D
Deadband 21
Dehumidication Control 34
Dimensions 3
E
Energy Saving Defaults 33
F
Feels Like 21
H
H/C Stage Locked In 20
Heating Mode 21
High Balance Point 21
Humidication Control 36
Humiditrol 35
I
Installer Checklist 39
L
Low Balance Point 21
N
New Installation 5
O
Offset 18, 22
Outdoor Temperature Sensor 5
P
Parameter Descriptions 18
R
Received Signal Strength Indica-
tion (RSSI) 29
Replacement Installation 6
S
Smart Away 21
Smooth Setback Recovery 18
Stage 2HP Lock Temp 20
Stage Control 22
Stage Delays 20
Stage Differential 19
System Congurations 9
System Test Mode 33
T
Terminal Descriptions 8
W
Wider Set Point Range 21
Wi-Fi Connection 27
Wi-Fi Signal Strength 29
Wi-Fi Troubleshooting 29
Wiring Diagrams 9
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