Chamberlain C203 User Manual

Garage Opener Garage Opener
Contents
Preparation ..................................... 2–5
Assembly ...................................... 6–10
Installation ..................................11–28
Install the Door Control ............21–22
Install the Protector System® ....23–26
Power ......................................27–28
Adjustments .................................29–31
Operation .....................................32–37
Features .......................................33
Using your Garage Door Opener .....34
Using the Multi-Function
Control Panel ...........................34–35
Remote Control .............................36
Homelink® ...................................36
To Erase the Memory .....................37
To Open the Door Manually ...........37
Maintenance .....................................38
Troubleshooting ...........................39–40
Accessories ........................................ 41
Warranty ........................................... 42
Repair Parts .................................43–44
Owner’s Manual
C203 • C400 • C410
Chain Drive Garage Door
Opener
FOR RESIDENTIAL USE ONLY
PRE-PROGRAMMED REMOTE CONTROL
INCLUDED
www.chamberlain.com
www.mychamberlain.com
• Please read this manual and the enclosed safety materials carefully!
• Fasten the manual near the garage door after installation.
• The door WILL NOT CLOSE unless the Protector System
®
is connected
and properly aligned.
• Periodic checks of the garage door opener are required to ensure
safe operation.
• The model number label is located on the front panel of your garage
door opener.
• This garage door opener is compatible with myQ® and
Security+b2.0® accessories.
• DO NOT install on a one-piece door if using devices or features
providing unattended close. Unattended devices and features are
to be used ONLY with sectional doors.
TO WATCH VIDEOS GO TO:
tinyurl.com/lgh5x3h

Chamberlain C203 Specifications

General

Type	Chain Drive
Horsepower	1/2 HP
Max Door Height	7 feet
Remote Control	Yes
Warranty	1-year
Voltage	120V
Remote Controls Included	1
LiftMaster Security+ 2.0	Yes
Battery Backup	No
Safety Features	Safety sensors

Summary

Preparation

Safety Symbol and Signal Word Review

Check the Door

Assembly

Assemble Rail and Install Trolley

Instructions for assembling the garage door opener rail and installing the trolley.

Fasten Rail to Motor Unit

Securing the assembled rail to the garage door opener motor unit.

Install Idler Pulley

Install Chain

Connecting the drive chain to the trolley and motor unit sprocket.

Tighten Chain

Adjusting the chain tension to the correct specification for operation.

Installation

Determine Header Bracket Location

Install Header Bracket

Attach Rail to Header Bracket

Position Garage Door Opener

Hang Garage Door Opener

Attach Emergency Release Rope and Handle

Install Door Bracket

Connect Door Arm to Trolley

Install Door Control

Wire Door Control to Garage Door Opener

Install Protector System

Installing the safety reversing sensors to prevent door closure on obstructions.

Wire Safety Reversing Sensors

Connecting the safety reversing sensors to the garage door opener unit.

Connect Power

Connecting the garage door opener to a power source for operation.

Align Safety Reversing Sensors

Adjusting the safety reversing sensors for proper beam alignment and function.

Ensure Door Control is Wired Correctly

Adjustments

Program the Travel

Setting the open and close travel limits for the garage door opener.

Test the Safety Reversal System

Verifying the safety reversal system functions correctly after adjustments.

Test the Protector System

Confirming the protector system (safety reversing sensors) is functional.

Operation

Using your Garage Door Opener

Remote Control and Keyless Entry

Open the Door Manually

Troubleshooting

Diagnostic Chart

Guide to identifying and resolving common issues using diagnostic codes and symptoms.