Programming a Maestro LED+ Dual Dimmer/Timer and Dimmer/Switch

This article provides resources for programming a Lutron Maestro LED+ Dual Dimmer/Switch and Dimmer/Timer (MACL-L3S25 / MACL-L3T251).
 
This article is expected to take 10 minutes to complete.
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Knowledge Article Contents:
Before You Begin
<a href='#MaestroLEDDualDimmerProgram'>Maestro LED+ Dual Control Dimmer Programming</a><a target='_self' href='#MaestroLEDDualDimmerProgram'></a>
<h2 style='margin: 2pt 0in 0in 0.5in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a href='#EnterDimmerAPM'>Entering Dimmer Advanced Programming Mode (APM)</a><a href='#EnterDimmerAPM' target='_self'></a></h2>
<h2 style='margin: 2pt 0in 0in 0.5in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a href='#AdjustLowEndTrim'>Adjusting the Low-end Trim</a><a href='#AdjustLowEndTrim' target='_self'></a></h2>
<h2 style='margin: 2pt 0in 0in 0.5in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a href='#ChangeDimmerPresetLevel'>Changing the Dimmer’s Preset Light Level</a><a href='#ChangeDimmerPresetLevel' target='_self'></a></h2>
<a href='#MaestroLEDDualTimerProgram'>Maestro LED+ Dual Control Timer Programming</a><a target='_self' href='#MaestroLEDDualTimerProgram'></a>
<h2 style='text-indent: 0.5in;margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a href='#EnterTimerAPM'>Entering Timer Advanced Programming Mode (APM)</a><a href='#EnterTimerAPM' target='_self'></a></h2>
<h2 style='text-indent: 0.5in;margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a href='#TimerPresetOption'>Selecting a Timer Preset Option</a><a href='#TimerPresetOption' target='_self'></a></h2>
<a href='#MaestroLEDDualAPMGuide'>Advanced Programming Guide</a><a href='#MaestroLEDDualAPMGuide' target='_self'></a>
Related Articles
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Before You Begin
Confirm your Maestro LED+ Dual Control is functioning as expected. If the dual control is not powering on, or controlling the connected load, confirm it is installed properly by reviewing the <a href='https://support.lutron.com/us/en/product/maestro/article/product-instal…; target='_blank'>Maestro LED+ Dual Control Wiring and Installation</a> article. 
Review the below diagram to understand your Maestro LED+ Dual Control’s buttons and indicator lights layout:
<img src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…;
<div align='center' style='text-align: center;line-height: 11.75pt;background: white;margin: 0in 0in 8pt;font-size: 11pt;font-family: Calibri, sans-serif;'><hr align='center' width='100%' size='1'></hr></div>
<a id='MaestroLEDDualDimmerProgram' style='color: rgb(47, 84, 150);' target='_blank'>Maestro LED+ Dual Control Dimmer Programming</a>
 
<h2 style='margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a id='EnterDimmerAPM' target='_blank'>Entering Dimmer Advanced Programming Mode (APM)</a></h2>
Prior to adjusting any of the below settings, the Maestro LED+ Dual Control must first enter Advanced Programming Mode (APM). Follow the steps below to enter APM:
 
<ol><li style='font-size: 14px;'>Pull out the Front Accessible Service Switch (FASS) tab and wait 5 seconds. This disconnects power to the lights.</li><li style='font-size: 14px;'>Press and hold the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-size: 14px;'>Push the FASS tab back in while still holding the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; for 5 seconds.</li><li style='font-size: 14px;'>Release the Dimmer Tap Button when the bottom Dimmer Indicator Light (DIL1) starts to blink. You are now in Advanced Programming Mode (APM).</li></ol>
 <img src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; style='color: var(--slds-g-color-neutral-base-10, #181818);font-size: 14.6667px;text-align: center;display: block;margin-left: auto;margin-right: auto;'></img>
 
<ul style='margin-bottom: 0in;margin-top: 0px;'><li style='margin: 0in 0in 0in 0px;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'>If there is no button activity for 1 minute, the dimmer automatically exits APM and returns to normal operation.</li><li style='margin: 0in 0in 0in 0px;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'>To save and exit out of APM and return to normal operation press and hold the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> until the Indicator Lights stop blinking.</li></ul>
<div align='center' style='margin: 0in;text-align: center;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'><hr align='center' width='100%' size='1'></hr></div>
<h2 style='margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a id='AdjustLowEndTrim' target='_blank'>Adjusting the Low-end Trim</a></h2>
The low-end trim sets the lowest level that your LED lights will stay on at a stable level. If you experience flickering of your LED lights at the lowest setting, increase the low-end trim level. Click here for a video on <a class='video-link' data-toggle='modal' data-target='#video-modal-dialog' data-backdrop='static' data-keyboard='false' data-video-title='Video' data-video-url='https://www.youtube-nocookie.com/embed/eJW2Rc3RECQ?rel=0'>Adjusting the Low-end Trim on a Maestro Dual Control</a>.
To adjust the low-end trim, follow the steps below while in APM:
<ol><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; or <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to select Dimmer Indicator Light 6 (DIL6).</li><li style='font-size: 14px;'>Tap the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…;. Dimmer Indicator Light 3 (DIL3) will blink by default.</li><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; or <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to select the desired low-end trim level.</li><li style='font-size: 14px;'>Tap the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to save the preferred low-end trim level.</li></ol>
<img src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; style='font-size: 14.6667px;text-align: center;display: block;margin-left: auto;margin-right: auto;'></img>
<div align='center' style='text-align: center;margin: 0in 0in 8pt;line-height: 107%;font-size: 11pt;font-family: Calibri, sans-serif;'><hr align='center' width='100%' size='1'></hr></div>
<h2 style='margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a id='ChangeDimmerPresetLevel' target='_blank' style='color: rgb(47, 84, 150);'>Changing the Dimmer’s Preset Light Level</a></h2>
The preset light level setting determines what level the lights turn on to when the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> is pressed. Click here for a video on <a class='video-link' data-toggle='modal' data-target='#video-modal-dialog' data-backdrop='static' data-keyboard='false' data-video-title='Video' data-video-url='https://www.youtube-nocookie.com/embed/NTDL0_m_pyk?rel=0'>Setting a Maestro Dimmer’s Preset Light Option</a>.
There are two Preset Light Level settings:
<ul style='margin-bottom: 0in;margin-top: 0px;'><li style='margin: 0in 0in 0in 0px;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'>Locked Preset – Tap <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> once to turn the lights on to the same programmed level every time.</li><li style='margin: 0in 0in 0in 0px;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'>Unlocked Preset – Tap <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> once to turn the lights on to the previous light level. This is the default setting.</li></ul>
 
To adjust the dimmer to a Locked Preset light level, follow the steps below while in APM to enter the Preset Light Level Settings: 
<ol><li style='list-style-type: none;'>
<ol><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; or <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to select Dimmer Indicator Light 1 (DIL1). </li><li style='font-size: 14px;'>Tap the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…;. If none of the Dimmer Indicator Lights are blinking, the dimmer is programmed for Unlocked Preset Light Level.</li><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to change to Locked Preset. </li><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; or <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to select the preferred Locked Preset Light Level.</li><li style='font-size: 14px;'>Tap the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to save the preferred Locked Preset level.</li></ol>
</li></ol>
 
To adjust the dimmer to an Unlocked Preset light level, follow the steps below while in the Preset Light Level Settings:
<ol><li style='list-style-type: none;'>
<ol><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> until Dimmer Indicator Light 1 (DIL1) is quickly flashing.</li><li style='font-size: 14px;'>Release <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-size: 14px;'>Press and hold <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> until all Indicator Lights turn off.</li><li style='font-size: 14px;'>Tap the Dimmer Tap Button <img alt='A black circle with white letter tDescription automatically generated' height='15' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> to save the Unlocked Preset setting.</li></ol>
</li></ol>
<img src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; style='text-align: center;color: var(--slds-g-color-neutral-base-10, #181818);font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';'></img>
<div align='center' style='text-align: center;margin: 0in 0in 8pt;line-height: 107%;font-size: 11pt;font-family: Calibri, sans-serif;'><hr align='center' width='100%' size='1'></hr></div>
<a id='MaestroLEDDualTimerProgram' style='color: rgb(47, 84, 150);' target='_blank'>Maestro LED+ Dual Control Timer Programming (MACL-L3T251 Only)</a>
<h2 style='margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'></h2>
<h2 style='margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a id='EnterTimerAPM' target='_blank'>Entering Timer Advanced Programming Mode (APM)</a></h2>
Prior to adjusting any of the below settings, the Maestro LED+ Dual Control must first enter Advanced Programming Mode (APM). 
 
Follow the steps below to enter APM:
 
<ol><li style='font-size: 14px;'>Pull out the Front Accessible Service Switch (FASS) tab and wait 5 seconds. This disconnects power to the lights.</li><li style='font-size: 14px;'>Press and hold the Timer Tap Button <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-size: 14px;'>Push the FASS tab back in while still holding the Timer Tap Button <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; for 5 seconds.</li><li style='font-size: 14px;'>Release the Dimmer Tap Button when the bottom Dimmer Indicator Light (DIL1) starts blinking. You are now in Advanced Programming Mode.</li></ol>
 
<img src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; style='color: var(--slds-g-color-neutral-base-10, #181818);font-size: 14.6667px;text-align: center;display: block;margin-left: auto;margin-right: auto;'></img>
 
 
<h2 style='margin: 2pt 0in 0in;line-height: 107%;break-after: avoid;font-size: 13pt;font-family: 'Calibri Light', sans-serif;color: rgb(47, 84, 150);font-weight: normal;'><a id='TimerPresetOption' target='_blank'>Selecting a Preset Option</a></h2>
The timer Preset Option setting determines what setting the timer turns on to when the Timer Tap Button <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> is pressed. The default setting is Unlocked Preset. There are two settings available:
<ul style='margin-bottom: 0in;margin-top: 0px;'><li style='margin: 0in 0in 0in 0px;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'>Locked Preset – Tap <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> once to turn the timer on to the same programmed level every time.</li><li style='margin: 0in 0in 0in 0px;line-height: normal;background: white;font-size: 11pt;font-family: Calibri, sans-serif;'>Unlocked Preset – Tap <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> once to turn the timer on to the previous level. </li></ul>
 
To adjust the timer to a Locked Preset level, follow the steps below while in APM:
<ol><li style='list-style-type: none;'>
<ol><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; or <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to select Timer Indicator Light 1 (TIL1). </li><li style='font-size: 14px;'>Tap the Timer Tap Button <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…;. If none of the Dimmer Indicator Lights are blinking, the timer is programmed for an Unlocked Preset level.</li><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; or <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to select the preferred Locked Preset timer Level.</li><li style='font-size: 14px;'>Tap the Timer Tap Button <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; to save the preferred Locked Preset level.</li></ol>
</li></ol>
 
 
To adjust the timer to an Unlocked Preset level, follow the steps below while in the Preset Option Setting:
<ol><li style='list-style-type: none;'>
<ol><li style='font-size: 14px;'>Press <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> until Timer Indicator Light 1 (TIL1) stops flashing.</li><li style='font-size: 14px;'>Release <img height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-size: 14px;'>Tap the Dimmer Tap Button <img alt='A black circle with white letter bDescription automatically generated' height='14' width='15' border='0' src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage… style='font-family: Helvetica, sans-serif;color: #181818;'> to save the Unlocked Preset setting.</li></ol>
</li></ol>
<img src='https://lutron.my.salesforce-sites.com/publicknowledge/servlet/rtaImage…; style='font-size: 14.6667px;text-align: center;display: block;margin-left: auto;margin-right: auto;'></img>
<div align='center' style='text-align: center;margin: 0in 0in 8pt;line-height: 107%;font-size: 11pt;font-family: Calibri, sans-serif;'><hr align='center' width='100%' size='1'></hr></div>
<a id='MaestroLEDDualAPMGuide' style='color: rgb(47, 84, 150);' target='_blank'>Maestro LED+ Dual Control Advanced Programming Guide</a>
For a list of all programming options, step-by-step instructions, and how to reset your Maestro LED+ Dual Control, click here to view the <a href='https://assets.lutron.com/a/documents/048806.pdf' target='_blank'>Maestro LED+ Dimmer/Switch and Dimmer/Timer Advanced Programming Mode</a>. 
<div align='center' style='text-align: center;margin: 0in 0in 8pt;line-height: 107%;font-size: 11pt;font-family: Calibri, sans-serif;'><hr align='center' width='100%' size='1'></hr></div>
Related Articles
Is your Maestro LED+ Dual Control not working properly? Review the Maestro LED+ Dual Control Troubleshooting Guide for help with your device.

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