Lennox M0STAT64Q-1 User Manual

1
INSTALLATION/
OPERATION
INSTRUCTIONS
CONTROLS
507644-02
3/2019
Supersedes 507644-01
This manual must be left with the
owner for future reference.
M0STAT64Q-1 Indoor Unit
Programmable
Controller
©2019 Lennox Industries Inc.
Dallas, Texas, USA
IMPORTANT
Frequent changes to operating mode may
cause system malfunction. Allow at least
one minute between mode changes to
allow the system to stabilize.
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 licensed professional HVAC installer
(or equivalent) or service agency.
Shipping and Packing List
Package 1 of 1 contains;
1 – Wired Controller
1 – Lithium battery
3 – Screws (mount to wall)
2 – Screws (mount to J-box)
2 – Plastic spacers (J-box)
1 – Connection Cable A with connector for all
indoor units
1 – Connection Cable B with connector for
MMDA/B, MCFA/B, M22A and M33A/B
indoor units
1 – Connection Cable C with connector for
MWMA/B indoor units
1 – Installation and operation manual
Specications
Input voltage 5 VDC
Ambient temperature 23~110°F (-5~43°C)
Ambient humidity RH40%~RH90%

Lennox M0STAT64Q-1 Specifications

General

Brand	Lennox
Model	M0STAT64Q-1
Category	Controller
Language	English

Summary

Installation and Operation Instructions

General Safety Warnings

Emphasizes risks of improper installation, adjustment, or maintenance.

Important Operation Note

General Product Information

Installation Requirements

Specifies conditions and locations for controller installation, avoiding direct sunlight and unconditioned spaces.

Wiring Warnings and Cautions

Highlights warnings about power, wet hands, and cautions regarding cleaning and environment.

Important Usage and Wiring Guidelines

General Manual and Wiring Compliance

Stresses reading the manual, adhering to codes, and controller voltage limits.

Wiring Diagram and Cable Separation

Details wiring connections, cable usage, grounding, and cable length limits.

Wiring Connections MMDA/B, MCFA/B, M22A and M33A/B

Controller Installation Steps

Select Cable Route and Prevent Water Entry

Advanced Installation Procedures

Controller Display Overview

Display Icons and Functions

Explains the various icons and indicators shown on the controller display.

Controller Button Functions

Button Labels and Descriptions

Details the function of each button on the controller interface.

Controller Setup Procedures

Set Current Day and Time

Set Room Temperature Sensor Location

Controller Operation Modes

Start/Stop and Set Operation Mode

How to turn the unit on/off and select operating modes (Auto, Cool, Dry, Heat, Fan).

Set Temperature Setpoint

Set Fan Speed

Set Swing Function

Timer and Schedule Programming

Setup Timed Operation (Start/Stop)

Guides for setting timed start, stop, or both start and stop times for operation.

Create Schedules (up to 8 events/day)

Instructions for creating daily schedules with up to 8 events, including mode and setpoint.

Schedule Management Functions

Activate and Deactivate Timed Operation

Edit a Scheduled Event

Troubleshooting Fault Codes

Fault Code Descriptions

Lists common fault codes displayed by the MOSTAT64Q and their descriptions.