Chamberlain Merlin MS105MYQ

The Merlin Commander Elite MS105MYQ is a sectional and tilt garage door opener designed for residential use. It comes with installation and operating instructions, emphasizing safety throughout its use. The device is designed to operate spring-balanced residential sectional and tilt doors up to 20 m².

Function Description

The primary function of the Merlin Commander Elite MS105MYQ is to automate the opening and closing of garage doors. It is equipped with a belt drive mechanism and a one-piece trolley on a steel rail, ensuring smooth and reliable operation. The opener includes a powerhead, a rail assembly, and various brackets for secure installation.

The device features a safety reverse system that is crucial for preventing serious personal injury or property damage. This system requires the garage door to reverse on contact with a 40 mm obstacle placed on the floor. After any adjustments, this safety reversal system must be tested to ensure proper function. The opener also incorporates automatic force adjustment to prevent excessive force from being applied to the door.

The Commander Elite MS105MYQ includes a control panel located under a cover at the rear of the opener. This panel features an E-Serial port for serial communication, push button inputs for wired wall controls, ground terminals, and an IR Sensor input for The Protector System™ (IR Beams). It also has dedicated terminals for a "Door-in-door" safety switch, which prevents the opener from activating if a built-in pedestrian door is open. Flasher terminals provide output for flashing lights during door motion.

The control panel is equipped with UP, PROG, DOWN, and LEARN buttons, along with an Indicator LED. The UP and DOWN buttons are used for initial programming, driving the door, and displaying diagnostic codes. The PROG button is used to program door limits and other features. The LEARN button is used to program transmitters and manually learn forces. A green button on the control panel allows for manual activation (Open - Stop - Close) when transmitters are unavailable.

The opener is designed to be compatible with myQ technology, allowing for smart home integration and remote control capabilities. It also supports a battery backup system, ensuring operation during power outages.

Usage Features

Installation and Setup:

Before installation, users are instructed to check the garage door for balance, sticking, or binding, and to repair any issues. All ropes, chains, and locks connected to the garage door must be removed to prevent entanglement. The header bracket, which supports the opener, must be rigidly fastened to a structural support. The rail is then assembled to the opener and attached to the header bracket. The door bracket is securely fastened to the door itself.

Manual Release:

The opener includes a manual release mechanism, identified by a red handle and rope, which allows the door to be operated manually during power outages or emergencies. To disengage, the rope and handle are pulled down. To re-engage, a green button in the center of the trolley assembly is pressed, and the door will automatically re-engage when it passes the trolley position. It is crucial not to use the red handle to open and close the door, and the handle should be mounted at a height less than 1.8 m from the floor.

Programming Travel Limits and Force Settings:

Travel limits regulate the points at which the door stops when moving UP or DOWN. These are programmed using the UP, DOWN, and PROG buttons on the control panel. The opener uses a position tab on the belt to activate a mechanical passpoint during door travel, which is essential for programming limits. The force settings are automatically adjusted during the travel limit setting process, but can also be manually learned if required.

Safety Reverse System Test:

After any adjustments to travel limits or force settings, the safety reverse system must be tested. A 40 mm high object is placed flat on the floor under the garage door. The door is then operated in the down direction and must reverse upon contact with the obstacle. If it fails to reverse, adjustments are necessary.

Travel Speed (Optional):

The opener offers two travel speeds: REGULAR and SLOW. The speed is automatically selected based on the door's travel distance (longer than 1.6 meters for REGULAR, shorter for SLOW). Users can also manually toggle between these speeds using the UP and DOWN arrows.

The Protector System™ (IR Beams) (Optional):

For enhanced safety, especially in installations where the closing force exceeds 400 N (40 kgf), The Protector System™ (IR Beams) is recommended. These IR beams prevent the door from closing if a person or object is in the beam's path. If the door is already closing and the beam is broken, it will return to the open position. The IR beams should be installed no higher than 100 mm above the floor.

Programming Transmitters:

Transmitters (remote controls) can be programmed to operate the opener and its courtesy light. This involves pressing and holding a button on the transmitter, then pressing and releasing the "LEARN" button on the opener. The opener's courtesy light will flash to confirm successful programming. Multiple transmitters can be programmed, and all codes can be erased by holding the "LEARN" button for an extended period.

Wireless Wall Button (E138M):

A wireless wall button is supplied and pre-programmed. Additional wall controls can be programmed using the wireless programming instructions. It should be installed at a minimum height of 1.5 m above the floor, in a location where the garage door is visible and out of reach of children.

Timer to Close Feature (TTC):

This feature allows the door to automatically close after a specified delay (10 to 180 seconds in 10-second increments) from a fully open position. It requires The Protector System™ (IR Beams) to be installed. The TTC feature is activated and adjusted using the PROG and DOWN buttons.

Partial Opening Feature (PET):

The PET feature provides an adjustable second stop position for ventilation, pedestrian, or pet access. This position is programmed to a specific transmitter button. The door can be driven to the desired PET access position, then programmed using the PROG and UP buttons.

Warning Labels:

Three warning labels are provided: a "Risk of entrapment" label near the fixed wall control, an "EMERGENCY Release/Service" label on the manual release cord, and a "WARNING Child Entrapment" label on a low inside panel of the door. These labels serve as reminders of safe operating procedures.

Maintenance Features

Regular Checks (Once a Month):

Users are advised to manually operate the garage door monthly to check for balance or binding. If issues are found, a qualified door technician should be called. The door should open and close fully, and limits and/or force should be adjusted if necessary. The safety reverse test must be repeated monthly, and any necessary adjustments made.

Annual Checks (Once a Year):

Annually, the belt and the inside of the rail assembly where the trolley slides should be lightly greased. This helps ensure smooth operation and prolongs the life of the components. The opener's internal components do not require additional lubrication.

Battery Replacement in Transmitters:

The batteries in the transmitters have a long life, but if the transmission range decreases, they need to be replaced. The manual provides instructions for replacing the CR2032 battery in the standard transmitter and for optional transmitters (E943M, E940M & E945M). Users are reminded to observe battery polarity and dispose of old batteries properly, as they are not covered by the warranty.

Troubleshooting:

The manual includes a comprehensive troubleshooting section to help users diagnose and resolve common issues. This section covers problems such as the opener not operating, short transmitter range, the door reversing for no apparent reason (often indicated by 10 flashes of the opener light), the door opening and closing by itself, the door stopping before closing completely, the door opening but not closing, the opener straining, the opener humming briefly but not working, the opener not activating due to power failure, and the carriage not moving despite the opener running.

Diagnostic Chart:

A diagnostic chart is provided, detailing various diagnostic codes indicated by the flashing UP and DOWN arrows on the control panel. Each code corresponds to a specific symptom and offers possible resolutions, such as checking IR beam alignment, wiring, motor, logic board, or passpoint module. This chart helps users identify and address problems efficiently.

The Merlin Commander Elite MS105MYQ is designed for safe, convenient, and reliable garage door operation, with a strong emphasis on user safety and ease of maintenance.

Chamberlain Merlin MS105MYQ Specifications

General

Manufacturer	Chamberlain
Model	MS105MYQ
Type	Garage Door Opener
Power Source	Electric
Motor Type	DC
Horsepower	1/2 HP
Drive	Chain
Drive Type	Chain Drive
Remote Controls Included	2
Battery Backup	No
Connectivity	Wi-Fi
Control	Remote control
Compatibility	MyQ
Security	Rolling code technology
Warranty	5 year motor warranty