Automatic Technology GDO-8 Shed Master User manual

GDO-8 Shed Master®
Featuring TrioCode™Technology
INSTALLATION INSTRUCTIONS | OWNERS COPY
Weather Resistant Roll Up Door Opener
Technical Document
Installation Manual
v1.01
14 Dec 2011
English
Part # 13242 (Manual)

2GDO-8 Shed Master® Owner Installation Instructions
WARNING: It is vital for the safety of persons to follow all
instructions.Failuretocomplywiththeinstallationinstructions
and the safety warnings may result in serious personal injury
and/or property and remote control opener damage. Please
save these instructions for future reference.
Automatic Technology Australia Pty Ltd to the extent that such may be lawfully excluded hereby expressly disclaims all
conditions or warranties, statutory or otherwise which may be implied by laws as conditions or warranties of purchase of
an Automatic Technology Australia Pty Ltd Roll Up Garage Door Opener. Automatic Technology Australia Pty Ltd hereby
further expressly excludes all or any liability for any injury, damage, cost, expense or claim whatsoever suffered by any
person as a result whether directly or indirectly from failure to install the Automatic Technology Australia Roll Up Garage
Door Opener in accordance with these installation instructions.

Owner Installation Instructions GDO-8 Shed Master® 3
Important Safety Instructions 4
Features 6
Operating Controls 8
Package Contents 10
Before Installation 11
Mounting The Opener 12
Setting Limits 13
Safety Obstruction Force Test 16
Adjusting Safety Obstruction Forces 17
Coding Transmitters 18
Remote Code Set Procedure 19
Deleting Transmitters 20
PE Beam And Final Setup 21
Parameters 22
Default Settings and Specifications 23
Trouble Shooting Guide 24
Maintenance 25
Parts List 26
Warranty 27
GDO-8 Shed Master®
Roll Up Garage Door Opener

4GDO-8 Shed Master® Owner Installation Instructions
FOR ADDITIONAL SAFETY protection we strongly recommend the fitting of a Photo Electric
PE Beam. In most countries PE Beams are mandatory on all garage doors fitted with automatic
openers. For a small additional outlay Automatic Technology recommends that PE Beams be
installed with the GDO-8 Shed Master ® ensuring additional safety and peace of
mind.
DO NOT operate the GDO-8 Shed Master ® unless the garage door is in
full view and free from objects such as cars and children/people. Make
sure that the door has finished moving before entering or leaving the
garage.
DO NOT operate the GDO-8 Shed Master ® when children/people are near
the door. Children must be supervised near the garage door at all times when
the GDO-8 Shed Master ® is in use. Serious personal injury and/or property
damage can result from failure to follow this warning.
DO NOT allow children to operate the GDO-8 Shed Master ® . Serious
personal injury and/or property damage can result from failure to follow
this warning.
Regularly check to make sure that the safety obstruction force is
working correctly, and is tested and set as per page 16 of this
Manual. Failure to follow this could result in serious personal
injury and/or property damage. This test must be repeated
at regular intervals and the necessary adjustments made as
required.
Doors requiring over 400N of force to move must have PE
Beams installed.
DO NOT disengage the GDO-8 Shed Master ® to
manual operation with children/people or any other
objects including motor vehicles within the doorway.
Install the wall switch or wall mounted transmitter
in a location where it is out of reach of children
and the garage door is visible.
WARNING: It is vital for the safety of persons to follow
all instructions. Failure to comply with the following
Safety instructions may result in serious personal
injury and/or property damage.
Important Safety Instructions

Owner Installation Instructions GDO-8 Shed Master® 5
The GDO-8 Shed Master ® is not intended for use by young children or infirm people without adequate
supervision. Children should be supervised to ensure they do not play with the remote transmitters or the
GDO-8 Shed Master ® .
Keep hands and loose clothing clear of the door and GDO-8 Shed Master ® at all times.
The unit is rated to IP24, however, it should be installed so that it is protected from the elements. Where
possible it should not be exposed to water or rain. It is not to be immersed in water or sprayed
directly by a hose or other water carrying device.
The garage door must be well balanced. Sticking or binding doors must be repaired by a
qualified garage door installer prior to installation of the GDO-8 Shed Master ® .
Frequently examine the installation, in particular cables, springs and mountings for signs of
wear, damage or imbalance. DO NOT use if repair or adjustment is needed since a fault
in the installation or an incorrectly balanced door may cause injury. DO NOT attempt to
repair the door yourself as hardware is under extreme tension.
Remove or disengage all garage door locks and mechanisms prior to installation of
the GDO-8 Shed Master ® .
Connect the GDO-8 Shed Master ® to a properly earthed general purpose
240V mains power outlet installed by a qualified electrical contractor. The
outlet (and GDO-8 Shed Master ® ) must be positioned so that it is easily
accessible.
Disconnect the power cord from mains power before making any
repairs or removing covers. Only experienced service personnel
should remove covers from the GDO-8 Shed Master ® .
In order for the GDO-8 Shed Master ® to sense an object
obstructing the door way, some force must be exerted on the
object. As a result the object, door and/or person may suffer
damage or injury.
If the power supply cord is damaged, it must be replaced
by an Automatic Technology service agent or suitably
qualified person.
Make sure that the door is fully open before driving
in or out of the garage and fully closed before
leaving the driveway.
Make sure that remote controls are kept out
of reach of children.
Important Safety Instructions

6GDO-8 Shed Master® Owner Installation Instructions
Operation
To open or close the door simply press a button on a TrioCode™ transmitter, or
optional wall switch for two seconds. During open and close cycles the door can
be stopped by pressing the button again. The next actuation will move the door
in the opposite direction.
TrioCode™ Code Hopping Technology
Every time a TrioCode™ transmitter is used, a new security code is randomly
generated from over 4.29 billion possibilities. This greatly enhances the security of
the system and makes “code grabbing” a thing of the past
These transmitters also overcome interference issues by simultaneously sending a
signal over three slightly different frequencies. Even if two of the three signals are
jammed, the system will still work.
Security Code Store
The GDO-8 Shed Master® Roll up Garage Door Opener uses revolutionary technology to
securely store eight (8) different TrioCode™ transmitters in its memory.
Weatherproof Design
The opener’s control board is housed in a weather-proof enclosure rated to IP24. This offers
protection from rain and the elements. PLEASE NOTE - the unit should not be sprayed by a hose
or any other water carrying device.
S-ALPS (Semi Automatic Limits Positioning System)
The S-ALPS system does away with manual adjustment of the door’s limits position using mechanical parts,
such as cams and microswitches. During installation the handheld transmitter can be programmed to set the
limits positions.
Overload Indicator
When the maximum opening and closing capacity of the opener is exceeded an audible beeper will sound
to indicate that an overload has occurred.
Features
Thank you for purchasing the Automatic Technology
GDO-8 Shed Master ® Automatic Roll Up Garage
Door Opener. Designed by our renowned engineers
to suit vertical operating continuous curtain roll up
doors, the GDO-8 Shed Master ® will provide
years of smart, simple & secure convenience
to your home.

Owner Installation Instructions GDO-8 Shed Master® 7
ISS (Intelligent Safety Obstruction System)
While the door is performing a close cycle, should it hit an obstacle or be restricted
in some manner, it will automatically reverse. The amount of force the door should
encounter before reversing is automatically adjusted by the doors control system
during the initialisation of the automatic door opener. The door will also stop if
restricted whilst opening. The Safety Obstruction Force should be checked at
least once a month. See page 16 of this manual for instructions.
Lockable Control Panel
The control panel can be locked and disabled to prevent tampering. This is
useful if the opener is to be mounted on an exposed carport or a perimeter door.
Locking the control panel will prevent operating the door via the Operate button,
re-profiling the door, clearing limits, clearing transmitters, changing force margins,
and coding transmitters.
Photo Electric (PE) Beam (optional)
The opener has an input for a PE beam to be connected for extra safety protection.
Secure Light Module (optional)
An external secure light module is available to connect to the GDO-8 Shed Master ® opener. The
light stays on for approximately four minutes after the operation of opener.
Manual Operation
The opener is equipped with a unique patented manual disengaging device. If the power to the opener is
disrupted for any reason, the door can be put into manual mode by pulling down on the string handle, then
releasing. This will allow you to manually open or close the door. When power is restored, by pulling down on
the string handle and releasing, the opener is put back into automatic mode.
Security Lock For Manual Release Handle (optional)
For added security the manual release handle can be locked out or disabled. This is ideal if the opener is to
be mounted on a perimeter door in an exposed carport.

8GDO-8 Shed Master® Owner Installation Instructions
Operating Controls
Prog input is used for the connection of the Automatic Technology PG-3 Universal Programmer for the
purpose of editing control and receiver functions.
PE Connector is used to connect PE Beams
Status LED (yellow) indicates when the datum adjustment screw has reached correct position.
Datum Adjust Screw Used to set mid-point of door travel during limits set up.
Door Code button (blue) is used for storing or erasing the transmitter button you wish to use to command
the door to open, stop or close.
Coding LED (red) light indicates whether a code is being stored or when a transmitter button is
pressed.
Set button (orange) is used during the installation phase together with the Plus and Minus buttons to set
the door limit positions. The Set button is also used to re-initialise the Opener.
Operate button (blue) is used during installation to test the open, stop and close cycles for the opener.
The opener has to be initialised by the Set button before the OPERATE button becomes operable.
Force Margin Set The obstruction force pressure is set automatically by the opener during installation.
The pressure can be adjusted manually using the Force Margin Set button (White). Pressing the force
margin set button and open or close button will increase or decrease the amount of force. The Force
Margin Set is only ever used if other environmental factors (wind, etc.) affect the operations of the door/
opener.
Plus button (green - for limits setting and force margin) can be used during installation to set the open
limit position. Pressing this button will move the door in the open direction. Movement stops when the
button is released. NOTE: The open safety obstruction detection is inoperable whenever the Close Drive
button is used to move door. This button is disabled after initialisation. This button is also used to increase
the force margin sensitivity.
Open Limit LED (green) The led is very helpful during installation. It illuminates and flashes when the
door is opening and remains steady on when the open limit position has been reached.
Minus button (red - for limits setting and force margin) can be used during installation to set the close
limit position. Pressing this button will move the door in the close direction. Movement stops when the
button is released. NOTE: The close safety obstruction detection is inoperable whenever the Close Drive
button is used to move door. This button is disabled after initialisation. This button is also used to decrease
the force margin sensitivity.
Close Limit LED (red) The led is very helpful during installation. It illuminates and flashes when the door
is closing and remains steady on when the close limit position has been reached.
Engage/Disengagement Cord is used to switch the door into manual mode especially in case of a
power failure. The length of the string is also adjustable.
01
02
03
04
05
06
07
08
09
10
11
12
13
14

Owner Installation Instructions GDO-8 Shed Master® 9
01
02
03
04
05
06
07 08 09 10
11
12
14
13
Operating Controls

10 GDO-8 Shed Master® Owner Installation Instructions
Package Contents
GDO-8 Shed Master® drive unit 1
TrioCode™ Transmitter pack 1
(Pack includes two keyring transmitters and batteries)
Weight bar (not included in some models) 1
Pan head screw M4x50mm (not included in some models) 2
Nilock hex nut M4 (not included in some models) 2
Flat washer I.D. 3/16 x ½ (not included in some models) 2
Locking bar covers 2
Installation manual 1

Owner Installation Instructions GDO-8 Shed Master® 11
Before Installation
Sideroom Requirements
Fig. 01 shows the minimum and recommended side
room that is required to mount the opener. The
distance between the edge of the door curtain and the
inside of the bracket must be at least 40mm. However,
for easier access it is recommended that at least 95mm
is allowed.
1. Check operation of door before
beginning the installation of the GDO-8
Shed Master ® .
The door must be well balanced and be in a
reasonable operating condition. You should be able
to lift the door smoothly and with little resistance. It
should stay open around 900mm to 1200mm above
the floor. The door should not stick or bind in the
guide tracks. The ideal operational effort in raising
or lowering the door should not exceed a force of
10kg (22lb). Make sure that all door locks, ropes,
chains etc. are either released or disabled and remove
unnecessary accessories.
2. Fixing Of Door Weight Bar
Move the door manually to the half open position.
Place the weight bar on the bottom rail in the middle
of the door and secure with the fasteners provided
(Fig. 02). Check the operation of the door again. If
the door feels heavy it may require extra tension to
be added to the door springs. IMPORTANT - Door
springs are under extreme tension and should only
be adjusted by a garage door professional.
3. Installing Locking Bar Covers
To protect against entrapment of fingers etc. inserted
into door guides – remove the protective backing of
the double sided tape and install the locking bar covers
over the holes in each door guide.
IMPORTANT SAFETY INSTRUCTIONS FOR INSTALLATION
Warning: Incorrect installation can lead to severe injury.
Follow ALL instructions.
01
fig
02
fig
03
fig
85
40
135
95
Side room Side room
Weight bar
Door side guide
Double sided tape
Locking bar hole

12 GDO-8 Shed Master® Owner Installation Instructions
Mounting The Opener
4. Fixing drive unit to the door
The GDO-8 Shed Master ® can be fixed to the roll up
garage door in a variety of ways. Described below is one
method of fixing. Make sure there is enough side room to
slide the drive assembly onto shaft.
PLEASE NOTE: The instructions for fixing the drive
assembly to the door is for right hand installation.
Fitting drive unit to door (Fig. 04, Fig. 05 and Fig. 06).
1. Check that the door shaft U bolt is securely tightened
on the left hand side of the door.
2. Raise the door and tie a rope around the centre to
secure the roll.
3. Support the right hand end of the door with a suitable
prop, e.g. step ladder and soft padding to protect
door surface.
WARNING: Do not allow children/people around
the door and prop. Serious personal injury and/
or property damage can result from failure to
follow this warning.
4. Carefully loosen and remove the right hand door shaft
U-bolt.
5. Make sure that the door supporting prop is secure.
While the door is supported remove the right hand
door mounting bracket from wall.
6. Remove the drive assembly from the packaging. Try
to rotate the drive gear by pushing on the fork. If
the gear does not rotate the manual mode has to
be selected. To select pull downward on the string
handle, then release slowly. The drive gear should
now rotate freely.
7. Slide the drive assembly over the door axle making
sure that the fork extends into and over one of the
spokes of the door drum wheel.
8. Refit the door mounting bracket to the wall. In some
cases the bracket may have to be re-positioned. Re-
fit and tighten the door shaft U-bolt. Remove door
supporting prop and untie the rope from the curtain.
9. Straighten the drive assembly and position as per Fig.
06. Tighten the two locking bolts firmly to secure the
Drive Unit.
10. Check the manual operation of the door by raising
and lowering the door. The door should run smoothly
and not catch on any part of the drive assembly.
11. Adjust the length of the manual release cord so that
it can be easily reached by an adult of average height
(ie. less than 1.8m tall).
NOTE: After installation, ensure that parts do not
extend over public footpaths or roads.
04
fig
05
fig
06
fig
Remove U bolt
Remove bracket
Pull string handle
if gear is not
turning freely
Re-fit right bracket
Tighten
“U bolt nuts”
Remove prop
Untie rope

Owner Installation Instructions GDO-8 Shed Master® 13
Setting Limits
5. Fixing of door curtain to drumwheel
The door curtain has to be secured to the drum wheel
with suitable fasteners. This prevents unauthorised
access through the door by pushing the curtain up and
off the drum.
1. With the door in the fully closed position, mark the
curtain (Fig. 07) on both ends of the door.
2. Open door slightly to have access to the marked
positions. Secure the curtain to drum wheel using
self drilling screws (two on each end). The screws
should be at least 90 degrees apart.
6. Setting Limits
6.1 Connect Power to the Powerhead
Plug the power cord into a mains point and switch power
on. The red CLOSE LIMIT LED will be flashing.
6.2 Coding transmitter for setting limits
1. Press and hold the Door Code button (Fig. 09).
2. Press button 1 (Fig. 11) on the transmitter for
two seconds.
3. Release and pause for two seconds.
4. Press the same button transmitter again for
two seconds.
5. Release the Door Code button.
NOTE: If PE Beams are to be used they must be
installed before setting the travel limits.
WARNING: The safety obstruction detection
system is inoperable while MINUS (-) and PLUS (+)
drive buttons are being used and travel limits are
not set.
IMPORTANT NOTE: The OPERATE button will
not function until the open and close limits
positions are set.
07
fig
Drum wheel
90°

14 GDO-8 Shed Master® Owner Installation Instructions
6.3 Setting datum position
1. Switch the opener into manual mode (Fig. 08).
2. Move the door by hand to an approximately mid
open position.
3. Re-engage the opener.
4. Using a small blade screw driver turn the datum
adjust screw slowly until the yellow status LED just
illuminates.
NOTE: If the status LED is already illuminated when
power is connected then turn the datum adjust screw
until the LED goes off then turn back one notch to
illuminate again.
6.4 Set the Limits Positions
Press and hold the MINUS (-) button until the door
reaches the desired close limit position. Single
presses will the inch the door closed (Fig. 09).
Press the LIMIT SET button to store the close position
into memory (Fig. 09)
Press and hold the PLUS (+) button until the door
reaches the desired open limit position. Single
presses will the inch the door open (Fig. 09).
IMPORTANT WARNING: The door will
automatically close, open and close again once
Step 6.4(4) is performed. Ensure that no people
or objects are in the door’s path.
Press the LIMIT SET button to store the close position
into memory (Fig. 09).
The door will now automatically close and open to
calculate the safety obstruction settings. After this, the
opener can be operated with the OPERATE button.
6.5 Resetting the Door Limit Positions
Limit positions can be deleted by the following steps:
Press and hold the MINUS (-) button for six (6)
seconds until you hear three beeps and the CLOSE
LIMIT LED starts to flash.
Release the CLOSE button.
Repeat Step 6.4 to set new travel limit positions.
1.
2.
3.
4.
5.
1.
2.
3.
08
fig
Setting Limits
Pull handle down to
disengage or re-engage
09
fig

Owner Installation Instructions GDO-8 Shed Master® 15
Setting Limits
6.6 Setting limits via remote control
PLEASE NOTE: The opener is factory preset for
installation on the RIGHT HAND SIDE. When the opener
is mounted on the left side of the door the opener will
travel in reverse.
1. Press button 4 to start closing the door. If the door
starts to open - press the Operate button (Fig. 10)
within two (2) seconds. Press button 4 again - the
door should now close. Release the button once you
are 1 to 2cm from your desired closed limit position.
2. Press button 4. Each press will enable you to inch
the door to your desired closed position.
3. Once you are happy with the position, press button
2 to store the closed limit position into memory.
4. Press button 1 to start opening the door. Release
the button once you are 1 to 2cm from your desired
open limit position.
5. Press button 1. Each press will enable you to inch the
door to your desired closed position.
IMPORTANT WARNING: Please be aware that
the garage door will start closing automatically
once step 6 is performed. The door will also
automatically re-open after fully closing with
a short pause between the cycles.
6. Once you are happy with the position, press button
2 to store the open limit position into memory.
The door will now automatically close to its limit
position then fully open to calculate the safety
obstruction forces (ISS). Please be aware of the above
warning.
7. Resetting door limits positions
The door limit positions can be deleted for new
positions by following the steps below:
1. Press and hold the Minus button (Fig. 10) for six
(6) seconds until you hear three beeps and the red
Close Limit LED starts to flash. Release the button.
2. Follow STEP 6.3 above to set new travel limit
positions.
IMPORTANT: There is no need to re-code the
transmitter used for setting the limit positions.
After the limits are set the transmitter will
automatically reset to normal operation.
Go to STEP 8 on page 16 and test the Safety
Obstruction Force.
10
fig
11
fig
Button 1
(Inch Open)
Button 4
(Inch Close)
Button 2
(Set)

16 GDO-8 Shed Master® Owner Installation Instructions
12
fig
13
fig
Wood (40mm high)
WARNING! Take care when testing or adjusting
the Safety Obstruction Force. Excessive force
may cause SERIOUS PERSONAL INJURY and/or
PROPERTY DAMAGE.
WARNING! Photo electric beams must be installed
if the closing force at the bottom edge of the door
exceeds 400N (40kgf).
8. Safety obstruction test
The test below should be repeated at regular
intervals (approximately every two months).
8.1 Testing close cycle
1. Open the door by pressing the OPERATE button
(Fig. 12).
2. Place a length of timber approximately 40mm high
on the floor directly under the door (Fig. 13).
3. Press the OPERATE button to close door. The door
should strike the object and start to re-open.
NOTE: If the door stops and fails to reopen, it is possible
that the motor direction is set incorrectly. Change the
motor direction and re test.
8.2 Testing open cycle
1. With the door closed - press the OPERATE button to
open the door. When the door is approximately one
metre above the floor, hold the bottom rail of the
door firmly and the door should stop.
IMPORTANT WARNING: If the test fails, there
may be a problem with the door, discontinue
use, put the door into manual operation and
call for service.
Safety Obstruction Force Test

Owner Installation Instructions GDO-8 Shed Master® 17
Adjusting Safety Obstruction Forces
Adjusting safety obstruction force
The Safety Obstruction Force is calculated automatically and set in memory on the GDO-8 Shed Master ® . It is
usually not necessary to adjust the Safety Obstruction Force. The only time the force may need to be increased
is due to environmental conditions, for example, windy or dusty areas, and areas with extreme temperature
changes. If adjustments are made, you must retest the obstruction force margin as per above.
8.3 To increase force pressure
1. Press and hold the Force Margin Set button (Fig. 12)
2. While holding down the Force Margin button, press the Plus button. Each press increases the force margin in
both directions. The Open Limit LED will illuminate each time the Plus button is pressed. Each press increases
the force margin. Test the force as per step 8.1 and 8.2. If the Open Limit LED flashes continuously when the
Plus button is being pressed, this indicates that the maximum force pressure setting has being reached.
8.4 To decrease force pressure
1. Press and hold the Force Margin Set button (Fig. 12).
2. While holding down the Force Margin button, press the Minus button. Each press decreases the force margin.
The Close Limit LED will illuminate each time the Minus button is pressed. Test the force as per step 8.1 and
8.2. If the Close Limit LED flashes continuously when the Minus button is being pressed, this indicates that the
maximum force pressure setting has been reached.
8.5 To recall factory set force
1. While holding down the Force Margin Set button (Fig. 12) press the SET button for two (2) seconds.
2. Release both buttons. The default setting should now be recalled.
8.6. To re-calculate force margin (ISS)
Press and hold the Set Button for two (2) seconds, the beeper will sound once. The door will start to move and
re-calculate force margins. The door can move between the open and close limit positions up to four (4) times
(depending on the position of the door and the power up condition). A single beep will be heard once the
process is complete. The door is now ready for use.
IMPORTANT NOTE: After installation ensure that the opener stops or is prevented from opening when
the door is loaded with a mass of 20kg fixed centrally at the bottom edge of the door.

18 GDO-8 Shed Master® Owner Installation Instructions
Coding Transmitters
14
fig
Press and hold
Door Code button
Select one of the four
buttons you wish to use
to control the door
9. Setting transmitters codes
The memory in the openers receiver can store up to (8)
eight remote control transmitters.
9.1 Code a Transmitter Button for Door
Operation
Press and hold the DOOR CODE button (Fig.
14).
Press one of the four buttons on the transmitter for
two (2) seconds, pause for two (2) seconds, then
press the same button again for two (2) seconds.
Release the DOOR CODE BUTTON.
Press the transmitter button to test.
9.2 Coding a Transmitter Button to the
Courtesy Light
The transmitter can be programmed to operate the
courtesy light on the opener independently of the door
moving. Connect the external secure light module to the
opener then:
Briefly press the DOOR CODE button once, then
press it again and hold (will beep two times on
second press).
Press one of the four (4) buttons on the transmitter
for two (2) seconds, pause for two (2) seconds,
then press the same button again for two (2)
seconds.
Release DOOR CODE button.
Press the transmitter button to test the light.
1.
2.
3.
4.
1.
2.
3.
4.

Owner Installation Instructions GDO-8 Shed Master® 19
Remote Code Set Procedure
If a transmitter is already coded into the opener,
additional transmitters can be coded without being in
direct contact with the opener.
NOTE: Only the function of the existing transmitter
button can be assigned to new transmitter. Please read
instructions prior to proceeding - there is a time-out
facility for security reasons.
10.1 Selecting the function to be coded
Using the existing transmitter, operate the door with
the transmitter button which has the function to be
coded (Fig. 15) (e.g. Button 1 has been coded with the
OSC function assigned).
10.2 Wait for door to complete cycle
If the button’s function activates the door (OSC) wait
for the door to complete its cycle.
10.3 Activate remote code set mode
Using a small pin press and hold through the Coding
Hole of the existing transmitter for two seconds (Fig.
16).
10.4 Code new transmitter button
Within 10 seconds, press the button on the new
transmitter you wish to code for 2 seconds (Fig. 17).
10.5 Confirm transmitter button to be
coded
Press the same button again (within 10 seconds)
for confirmation.
10.6 Test operation
The new transmitter button should now function as the
existing transmitter.
15
fig
16
fig
Existing
transmitter
New
transmitter
PRESS
PRESS
Existing
transmitter
17
fig

20 GDO-8 Shed Master® Owner Installation Instructions
Deleting Transmitters
11. Deleting programmed codes
11.1 Deleting a stored transmitter code
1. Select the transmitter you want to delete.
2. Press and hold the Door Code button (Fig. 18).
3. Press the transmitter button you would like to delete
for two seconds. Pause for two seconds. Press the
transmitter button again for two seconds.
4. Release the Door Code button. The code should now
be deleted. Confirm this by pressing the transmitter
button. The door should not respond.
11.2 Deleting all stored transmitter codes
1. Turn the power off to the opener.
2. Press and hold the Door Code button (Fig. 18).
3. Turn the power on again while holding the Door
Code button. The Open Limit, Close Limit and Door
Status LED’s will illuminate for about five seconds.
These LED’s will turn Off and the Coding LED will
illuminate. Release the Door Code button. All the
stored codes should now be deleted. Confirm
this by trying to operate the door by pressing the
transmitters previously used to control the door. The
door should not respond.
12. Locking the control panel
To lock or disable the control panel, a transmitter button
must be coded to operate the door.
1. Press and hold coded button of transmitter to
operate the door and Plus (+) button on the opener
together until you hear a beep (approx. four (4)
seconds).
2. Release both buttons.
3. The control panel should now be locked. Press the
Operate button on the opener to confirm the door
does not move.
To unlock the control panel repeat the above steps.
Press and hold
Door Code button
buttons you wish to
detete
press and hold Plus
(+) button on the
opener and pre coded
OSC button on the
transmitter
18
fig
19
fig