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Lennox M0STAT120N-1

Lennox M0STAT120N-1
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INSTALLATION AND USER
INFORMATION GUIDE
©
2023 Lennox Industries Inc.
Dallas, Texas, USA
M0STAT120N-1 Indoor
Wired Programmable
Controller
CONTROLS
508332-01 6/2023
THIS MANUAL MUST BE LEFT WITH
THE OWNER FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration,
ser vice 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.
CAUTION
As with any mechanical equipment, contact
with sharp sheet metal edges can result in
personal injury. Use caution while handling
this equipment. Wear gloves and protective
clothing.
IMPORTANT
Frequent changes to operating mode may
cause system malfunctions. Allow at least
one minute between mode changes to allow
the system to stabilize.
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Lennox M0STAT120N-1 Specifications

General IconGeneral
BrandLennox
ModelM0STAT120N-1
CategoryController
LanguageEnglish

Summary

General Information

Installation Requirements

Shipping and Packing

Product Overview

Product Features

Product Dimensions

Back Plate Removal

Installing the Back Plate

Making Connections

Cable Connection Illustration

Illustrates how to connect the controller's 4-pin cable to the extension cable and adapter board.

Battery Installation

Reattaching the Top Panel

Controller Buttons and Functions

FAN SPEED Button

Sets the fan speed, with options for Auto, LOW, MED, HIGH, and stepless speed regulation.

MODE Button

Scrolls through available operation modes: Auto, Cool, Dry, Heat, Fan.

FUNCTION Button

Scrolls through unit operations like Turbo, Sleep, and Follow Me.

SWING Button

Starts or stops the louver auto swing feature.

UPDOWN Buttons

Adjusts the indoor temperature in 1°F increments, up to 86°F.

TIMER Button

Sets the unit for daily or weekly on/off operation.

COPY Button

Copies schedules from one day to another.

POWER Button

Turns the system on and off.

CONFIRM Button

Confirms each step when managing schedules.

BACK Button

Returns to the previous step.

DAY OFFDELAY Button

Disables specific days/schedules or deletes a specific event.

LOCK Function

Locks the controller, disabling all other buttons.

Wired Controller Indicators

MODE display

Displays the current operating mode (Auto, Cool, Dry, Heat, Aux, Fan).

Temperature display

Shows the current or set temperature.

Lock display

Indicates when the controller is locked.

F C display

Shows temperature units in Fahrenheit or Celsius.

Room temperature display

Displays the ambient room temperature.

RH Humidity display

Shows relative humidity level.

Follow me feature display

Shows when the Follow Me feature is active.

Turbo feature display

Indicates when the Turbo feature is active.

Filter reminder display

Alerts when filter cleaning or replacement is due.

SLEEP feature display

Shows when the Sleep mode is active.

Active clean display

Shows when the Active Clean feature is running.

Intelligent eye display

Indicates when the Intelligent Eye feature is active.

Weekly Timer ONOff Timer display

Shows timer settings and status.

Clock display

Displays the current time.

HORIZONTAL SWING display

Indicates horizontal louver swing status.

VERTICAL SWING display

Indicates vertical louver swing status.

Setting Time and Date

Lock Function

Activates or deactivates the controller's lock function to prevent tampering.

Louver Swing Function

UpDown and LeftRight Swing

Controls both up/down and left/right louver swing functions.

UpDown Swing Functions

Controls up/down louver swing and auto swing features.

Units with Four Louvers

Adjusting Louver Direction

Allows independent adjustment of each of the four louvers.

Selecting System Mode

Selecting Turbo Feature

Intelligent Eye Display

Filter Reset

Humidity Setting Function

GEAR Function

Fan Speed Setting

Room Temperature Settings

Timer Function

Setting ON or OFF Timer

Guides on setting the timer for starting or stopping air conditioner operation.

Weekly Timer Settings

Weekly Timer 1 or 2

Details on setting weekly timers, including day and time for ON/OFF operations.

Activate or Deactivate Weekly Timer

Instructions to turn the weekly timer function on or off.

Timer Operation

Turning OFF Cooling or Heating

Temporarily turns off heating or cooling until the next scheduled timer event.

Set Day Off for Holiday

Allows setting specific days as 'Day Off' for holiday scheduling.

Delay Function

Applies a delay to the timer function within the weekly timer setting.

Copying Day Setting

Electric Heat Operation

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